Plastic Engineering

N H ỰA KỸ N H ỰA KỸTH U ẬTTH U ẬT

KS. TRẦN VĨNH MINHKS. TRẦN VĨNH MINH

Email: boontv2003@yahoo.comEmail: boontv2003@yahoo.com

ĐT: 01688099908ĐT: 01688099908

CÁC NHÓM NHỰA KỸ THUẬT

• NHÓM PP NHÓM PP • NHÓM STYRENENHÓM STYRENE• NHÓM POLYAMIDNHÓM POLYAMID• NHÓM POLYESTERNHÓM POLYESTER

• NHỰA POMNHỰA POM• NHỰA PCNHỰA PC• NHỰA PMMANHỰA PMMA• NHÓM NHỰA ĐẶC BIỆTNHÓM NHỰA ĐẶC BIỆT

PP / PP-ELS* / PP-30GF / PP-30PET-FPP / PP-ELS* / PP-30GF / PP-30PET-F

PPPolypropylene shows a high mechanical strength

and a tensile strength, but a low notched impact strength.

PP resists stress cracking and it is easy to weld. At minus temperatures it can get brittle.

The chemical and electrical properties are very good. The continous operating temperatures ranges between

+50 C and +1000 C.

PP / PP-ELS* / PP-30GF / PP-30PET-FPP / PP-ELS* / PP-30GF / PP-30PET-F

Properties:• low weight• high heat resistance• high tensile strength, high surface strength• high chemical resistance• low oxidation resistance• low abrasion resistance• brittle in the coldness• HF-welding not possible• natural color is not weather resistant

Applications:• Pumps, valves, gaskets, supporting stands for the coating

industry, spacer for the plating, particles for toys.

PP / PP-ELS* / PP-30GF / PP-30PET-FPP / PP-ELS* / PP-30GF / PP-30PET-F

PP-ELS* (electrically conductive)

– PP-H with improved electronical conductivity.– Volume resistivity ≤ 106 Ω,– Surface resistivity ≤ 106 Ω.– A higher stability in contrast to the standard PP

PP-30GF– The 30% glass fibre reinforced PP has an improved

dimensional stability.– very high stiffness and heat resistance HDT/B +1550 C

that opens up additional applications.

PP / PP-ELS* / PP-30GF / PP-30PET-FPP / PP-ELS* / PP-30GF / PP-30PET-F PP-30PET-F

– The 30% PET fibre reinforced PP is characterised by an optimised stiffness with an improved notched impact strength at the same time.

Properties:• the relation between mechanical strength and impact strength is very high • a handy surface• the fracture behavior is splinter-proof for passive safety• better impact strength at -300 C as e.g. PC• higher heat resistance as e.g. PP• higher tensile strength as e.g. PP and PA• PET-fibres decreases the notched sensitivity• good acoustic characteristics (good absorbability, lower emission of noise)

Applications:– Production of brushes and barrels, pumps and valve parts.

NHÓM NHỰA STYRENE

PS : POLYSTYRENE

HIPS : HIGH IMPACT POLYSTYRENE

SAN : STYRENE ACRYLONITILE

ABS : ACRYLONITRIL BUTADIEN STYRENE

SBS : STYRENE BUTADIENE STYRENE

SEBS: STYRENE ETYLENE BUTADIEN STYRENE

SBC : STYRENE BUTADIENE COPOLYMER

NHỰA POLYSTYRENE (PS) , , N h ö ïa v o â ñ ò n h h ìn h t r o n g

, k h o â n g m a ø u h ô i d o ø n . coù Tg khoaûng 800C.

Ñeán 800C thì ñoä daõn daøi nhaûy voït, PS trôû neân meàm nhö cao su vaø dính neân chæ söû duïng PS coù Tg < 800C

PS doøn, coù öùng suaát noäi neân ñeå ngaên ngöøa nöùt söû duïng chaát hoùa deûo hoaëc phuï gia voâ cô (boät tal ).

Ngoøai ra coøn coù theå caûi thieän tính chaát cô lyù baèng caùch thieát keá khuoân vaø ñieàu chænh caùc thoâng soá eùp phun.

PS coù nhieàu chæ soá chaûy khaùc nhau: , d e ã c h a û y c h a û y t r u n g b ìn h v a ø

c h ò u n h ie ä t c a o .

Loaïi deã chaûy:– Khoái löôïng phaân töû thaáp.– 3 - 4 % C h ö ù a d a à u k h o a ù n g ñeå

laøm giaûm ñoä nhôùt, taêng chæ soá chaûy (> 20g/10 phuùt).

– Söû duïng trong coâng ngheä eùp phun, taïo caùc saûn phaåm thaønh moûng.

NHỰA POLYSTYRENE (PS)

Loaïi chaûy trung bình chöùa khoaûng 1 -2 % .d a à u k h o a ù n g

Loaïi chòu nhieät cao: Troïng löôïng phaân töû cao. , K h o â n g c h ö ù a d a à u k h o a ù n g

p h u ï g ia . Chæ soá chaûy thaáp: nhieät ñoä bieán daïng

nhieät cao, tính doøn giaûm. Giaù thaønh cao, chu kyø gia coâng daøi. Chuû yeáu trong bao goùi do dö löôïng

monomer ít.

NHỰA POLYSTYRENE (PS)

Saûn phaåm daân duïng: cuùc aùo, saûn phaåm

eùp phun thaønh moûng, thuøng chöùa, maøng,

caùc saûn phaåm bao bì ñoùng goùi keå caû trong

thöïc phaåm...

Caùch ñieän, caùch nhieät: caùc chi tieát TV, radio,

thieát bò trong kyõ thuaät laïnh,...

Ngoaøi ra caùc saûn phaåm PS coøn ôû daïng

foam, duøng laøm taám loùt choáng shock, hoäp

ñöïng thöïc phaåm.

NHỰA POLYSTYRENE (PS)

( H IP S h ig h t im p a c t)s t y r e n e

HIPS ñöôïc truøng hôïp gheùp töø monomer styrene vôùi elastomer hoaëc troän hôïp PS vôùi elastomer (butadien).

.Ta ê n g ñ o ä b e à n v a ñ a ä p

Giaûm tính chòu nhieät, giaûm ñoä trong. Giaûm tính chaát ñieän moâi. Kích thöôùc keùm oån ñònh, khoù gia coâng.

( S AN s t y r e n e )a c r y lo n it r i le c o p o ly m e r

:Tín h c h a á t

Ñ o ä c ö ù n g v a ø ñ o ä v a ñ a ä p h ô n

, P S c h ò u ñ ö ô ïc m a ø i m o ø n n h ö n g

.ít b ò d o ø n Töông hôïp vôùi chaát hoùa deõo toát hôn PS.

.Ñ o ä k h a ù n g n h ie ä t t o á t h ô n P S SAN coù ñoä trong suoát nhöng seõ ngaû maøu

vaøng khi nhiệt ñoä tăng cao.

AB S ( Ac r y lo n it r ile )B u t a d ie n e S t y r e n e

Truøng hôïp töø 3 monomer khaùc nhau (Acrylonitrile – Butadien – Styrene).

Keát hôïp ñöôïc tính chaát khaùng hoùa chaát, oån ñònh nhieät cuûa a c r y lo n it r ile , tính dai beàn va ñaäp cuûa b u t a d ie n e vaø khaû naêng deã gia coâng, ñoä cöùng cuûa

.s t y r e n e

C C

H

H

H

CN

C C C C

H

H

H H H

H

H

C C

H

H

Nhöïa ABS laø nhöïa nhieät deûo voâ ñònh hình.

Nhöïa ABS chòu va ñaäp, chòu nhieät, hoùa chaát vaø khaùng thôøi tieát, deã gia coâng vaø beà maët saûn phaåm ñeïp.

Coù theå maï kim loaïi.

Ñoä co ngoùt thaáp neân gia coâng cho saûn phaåm coù kích thöôùc raát chính xaùc.

AB S ( Ac r y lo n it r ile )B u t a d ie n e S t y r e n e

ABS – öùng duïng

Kyõ thuaät ñieän – ñieän töû: Caùc saûn phaåm caùch ñieän, ngaønh

thoâng tin lieân laïc, thieát bò vaên phoøng nhö voû maùy vi tính, tivi, ñieän thoaïi, baøn phím, maùy chuïp aûnh...

Trong kyõ thuaät laïnh: Laøm caùc voû boïc beân trong, caùc cöûa

trong vaø voû boïc ngoaøi chòu va ñaäp ôû nhieät ñoä laïnh.

ABS – öùng duïng

Trong coâng nghieäp xe hôi: laøm caùc xe

hôi theå thao nhoû, thuyeàn theå thao.

Trong coâng nghieäp bao bì, ñaëc bieät laø

duøng trong thöïc phaåm, caùc saûn phaåm

eùp phun, thuøng chöùa vaø maøng.

NHỰA ABSABS Acrylnitrile butadiene Styrene copolymer has a good thermal

and dimensional stability and high impact strength (also at low temperature). It is strong, shows a good scratch resistance and has a good dimensional stability. ABS can be used in temperatures ranging from -50 °C to +70 °C.

Properties:• good mechanical strength and hardness• resists scratching (khang tray xuoc)• high surface strength (do ben be mat cao)• high impact strength (do ben va dap cao)• high dimensional stability (on dinh kich thuoc hai chieu)• not weather resistant (khang thoi tiet khong tot)• caused resistance to acid and caustic solutions

Applications:– Parts with a high impact strength also in the cooling.

NHÓM NHỰA PA

• PA 6

• PA 66

• PA 6 - 12• PA 10

• PA 12

• BLEND PE – PA

• PA G SỢI THUỶ TINH• PA ĐẶC BIỆT

NHÓM NHỰA PA

• TÊN THƯƠNG MẠI

• NHÀ CUNG CẤP

• TÍNH CHẤT

• ỨNG DỤNG

N H Ö ÏA - P A Tín h c h a á t

Ñi töø amoino acid: (nylon 6) (- NH- (CH2)5 –CO-)n;

Ñi töø polyamin vaø polyacid: (nylon 66)(- NH- (CH2)6 -NH- CO- (CH2)4 – CO -)n

Ñaëc tính phaân cöïc maïnh cuûa nhoùm CONH taïo lieân keát hydro giöõa caùc phaân töû laøm PA coù tính dai, cöùng vaø khaùng nhieät( nhieät ñoä noùng chaûy cao) vaø khaû naêng caùch ñieän keùm.

N H Ö ÏA - P A Tín h c h a á t

Ñoä haáp thu nöôùc vaø khaû naêng keát tinh cuûa PA phuï thuoäc vaøo söï coù maët cuûa n h o ù m

h y d r o c a c b o n b e ù o v a ø ñ o ä d a ø i

c u û a n h o ù m h y d r o c a c b o n giöõa caùc nhoùm CONH.

PA khaùng haàu heát caùc dung moâi höõu cô, nhieân lieäu, chaát beùo, daàu khoaùng, axit voâ cô loõang vaø kieàm 20%, amoniac. PA tan trong axit sunfuric ñaäm ñaëc, axit formic 90% vaø phenol.

PA coù caáu taïo maïch daïng goác neân khaû naêng ñònh höôùng cao, ñoä keát tinh lôùn ⇒ thích hôïp saûn phaåm daïng sôïi.

- C a ù c lo ïa i P A c ô b a û n P A k e á t t in h

6 6 6 9 - P A v a ø P A h a á p t h u t ö ø

10 % , 1 1 n ö ô ù c la ø b a û o h o ø a P A

1 2 1 ,5 % . v a ø P A c h æ PA6 vaø PA66 khoâ thì doøn, deã bò öùng suaát nöùt.

Hôïp chaát khaùng va ñaäp cuûa PA daïng khoâ chöùa 10- 15% PE ñöôïc gheùp baèng ionmer hoaëc gheùp hoùa hoïc vôùi anhydrice maleic hoaëc acrylic.

S a û n p h a å m P A c o ù ñ o ä b e à n v a

ñ a ä p c a o t h ö ô ø n g ñ ö ô ïc t r o ä n

, h ô ïp v ô ù i E P D M c a o s u t o å n g

h ô ïp , caùc loïai löôùi ñan thöôøng keát hôïp PA vôùi silicon.

- P A k e á t t in h g iac o â n g

Saáy tröôùc khi gia coâng. Ñoä co ruùt cao.

Khoaûng nhieät ñoä noùng chaûy heïp khoù gia coâng: thoâng soá caøi ñaët, ñieàu kieän maùy moùc,...

Tuøy coâng duïng, coù theå keát hôïp PA vôùi caùc chaát phuï gia, gia cöôøng, ñoän, chaát oån ñònh khaùng UV...

- P A k e á t t in h ö ù n gd u ïn g

Saûn phaåm daïng sôïi coù ñoä beàn cô lyù cao, choáng ma saùt: löôùi ñaùnh caù, sôïi ñoän cho caùc oå tröôït.

Söû duïng vôùi gia cöôøng daïng composite ⇒ taêng ñoä beàn, öùng duïng chính laø caùc saûn phaåm coù ñoä beàn va ñaäp, khaùng shock, chòu taûi ñoäng, haáp thu tieáng oàn, caùc saûn phaåm tieáp xuùc moâi tröôøng daàu nhôùt maø khoâng caàn boâi trôn.

PA khoái löôïng phaân töû thaáp duøng laøm chaát taïo maøng: sôn, ñoùng raén nhöïa epoxy...

- P A v o â ñ ò n h h ìn h t ín h c h a á t

Thay nhoùm -CH2- saép xeáp ñeàu ñaën phaúng, daïng khoái baèng caùc loïai a c id

is o p h t h a lic v ô ù i v o ø n g t h ô m ⇒ PA voâ ñònh hình.

PA voâ ñònh hình: , , C ö ù n g t r o n g k h o â n g h a á p t h u

n ö ô ù c . Coù tính oån ñònh nhieät cöïc toát. K h o a û n g n h ie ä t ñ o ä n o ù n g

c h a û y r o ä n g ⇒ deã gia coâng.

– P A v o â ñ ò n h h ìn h ö ù n g d u ïn g

PA voâ ñònh hình deã gia coâng neân coù ngoaïi

quan ñeïp hôn PA keát tinh.

Saûn phaåm: thieát bò ñieän, cô khí, ño ñaïc,

goïng kieán, caùc saûn phaåm eùp phun trong

ngaønh hoùa, y, oáng, maøng,...

C o p o ly m e r P A

Bieán tính PA taïo ñoä meàm deûo baèng

chaát hoùa deûo coù ñoä phaân cöïc töông

ñöông hoaëc baèng cao su...

NHÓM NHỰA PA PA Polyamide shows both a high thermostability (temperature resistant from

-40 °C to approx. +100 °C) and high stiffness, hardness and toughness. These are some of the main characteristics. Due to the fact, that the good mechanical characteristics will be achieved only after conditioning, this material must be conditioned again after annealing. In addition, this conditioning occurs with a longer storage in air automatically.

Properties:• high strength and stiffness• high impact and notching impact strength• high heat deflection temperature• good at dampening• good glide and limp home characters• good chemical stability against organic solvents and fuels• size alteration by humidity absorption must be considered• dimension stability, electrical and mechanical properties may become affected by absorbing moisture or water

Applications:– Bearing parts (good sliding properties), gear wheels, pump parts, sliding rails,

castors (reduction of the noise level), fittings)

NHÓM NHỰA PA

PA 6 xt (extruded)– Very tough (also in cold condition), high hardness.

PA 6G (cast)– Very stress-relieved and high-molecular PA 6. Properties similar to PA 6.

PA 6 G-Oil– PA 6 G Oil has a fine crystalline structure with non wear and tear and is

self-lubricating. The high resistance to wear and tear and the remarkable sliding properties can be further improved by adding oil, lubricants and stabilizers.

PA 6.6 (Nylon®)– Polyamide with the highest hardness, rigidity, a good resistance to wear

and heat deflection temperature.

PA 6.6-30GF– The 30% glass fibre reinforced PA 6.6 has an improved dimensional

stability, a very high stiffness and heat resistance that allows further uses.

NHỰA POM

• TÊN THƯƠNG MẠI

• NHÀ CUNG CẤP

• TÍNH CHẤT

• ỨNG DỤNG

POM (Acetal resin hoaëc polyoxymethylene )

x/3

C

H

H

O C

H

H

O C

H

H

OC

H

H

Ox

x ~ 10.000 – 30.000

P O M ( Ac e t a l r e s in h o a ë c )p o ly o x y m e t h y le n e

M a é c x íc h p h a â n t ö û s a é p x e á p , ñ e à u ñ a ë n m a ïc h t h a ú n g v a ø d a ø y ñ a ë c n e â n P O M c o ù ñ o ä , k e á t t in h r a á t c a o do ñoù POM laø loaïi

nhöïa nhieät deûo khoâng gia cöôøng , c ö ù n g d a i n h a á t , coù khaû naêng chòu ñöôïc taûi

ñoäng vaø beàn trong khoaûng nhieät ñoä roäng. POM khoâng tan trong baát cöù dung moâi nhieân

lieäu vaø daàu khoaùng naøo, thaäm chí ít tröông. Beà maët cöùng, chæ soá ma saùt noäi vaø ngoaïi

thaáp (POM: 0,15- 0,25, theùp: 0,2- 0,3 trong moâi tröôøng ñoäng) neân caùc saûn phaåm POM khaùng maøi moøn raát toát, khoâng bò aûnh höôûng bôûi öùng suaát nöùt.

UV vaø caùc böùc xaï giaøu naêng löôïng aûnh höôûng raát lôùn ñeán saûn phaåm POM.

P O M ( Ac e t a l r e s in h o a ë c )p o ly o x y m e t h y le n e

:Ta ê n g t ín h n a ê n g g ia c o â n g ñeå taêng toác ñoä chaûy, ngöôøi ta söû duïng theâm daàu silicol, caùc chaát boâi trôn …

C a ù c lo a ïi c o ù ñ o ä n t h u û y t in h : Homopolymer khi ñoän sôïi thuûy tinh seõ taêng ñoä cöùng, tính khaùng tröôït, copolymer khi ñoän haït thuûy tinh seõ taêng ñoä cöùng giaûm cong veânh.

:C a ù c c h u û n g g h e ù p k h o a ù n g copolymer gheùp khoaùng khaùng cong veânh, va ñaäp, oån ñònh kích thöôùc, taêng ñoä cöùng.

:O å n ñ ò n h U V Haïn cheá polymer bò laõo hoùa, bieán maøu ñaëc bieät laøcaùc saûn phaåm ngoaøi trôøi.

:B ie á n t ín h e la s t o m e r taêng ñoä dai, khaùng va ñaäp.

P O M ( Ac e t a l r e s in h o a ë c )p o ly o x y m e t h y le n e

Treân thò tröôøng, POM daïng haït, coù nhieàu loaïi cho ñuøn, ñuøn thoåi, eùp phun. Trong coâng ngheä eùp phun coù raát nhieàu chæ soá chaûy khaùc nhau cho saûn phaåm thaønh moûng.

POM coù tyû leä keát tinh cao vaø caáu truùc beà maët baèng phaúng neân ñoä co ruùt cao, töø 1- 3% phu thuoäc vaøo nhieät ñoä khuoân, neáu söû duïng nguyeân lieäu ñöôïc gia cöôøng baèng sôïi thuûy tinh thæ coù theå giaûm xuoáng 0,2- 0,6%.

2 0 0N h ie ä t ñ o ä t r e â n 0 C t h ì r a á t n g u y h ie å m v ì P O M p h a â n h u û y d a ã n .ñ e á n b a y k h í f o rm a ld e h id e

POM- öùng duïng Giao thoâng: coâng taéc ñieän, daây thaéc löng

gheá ngoài, baùnh raêng vaø caùc saûn phaåm truyeàn ñoäng khaùc, tay quay, cöûa soå xe …

Coâng nghieäp: caùc boä phaän töï ñoäng, boä cheá hoøa khí, oáng daãn nöôùc noùng vaø nhieân lieäu, val, quaït, loø xo, baêng taûi, maéc xích …

Heä thoáng oáng nöôùc (ñaëc tröng saûn phaåm acetal): phao, voøi sen, val, ñaàu phun nöôùc …

POM-C / POM-ELS* / POM-ESD* / POM-10PE

POM-C (Acetal) Polyoxymethylene can be used in temperatures up to +1000 C. The high surface strength

is only surpassed by a few materials. POM shows good sliding properties and high resistance to wear and tear because of the high strength and smooth surface. There is a very low risk of stress cracks. POM-C (Copolymere) exhibits a high thermal stability and a high resistance to chemicals (high resistance to hydrolysis).

Properties:• no microporosity• high strength• high rigidity (to -400C)• high thermal stability• low water absorption• high dimension stability• good electrical insulating properties• very good sliding properties• high resistance to solvents• very high resistance to stress cracks• not resistant to high-concentrated acids• difficult to glue and paint

Applications:– Bearings, fittings, gear wheels, parts for pumps, screws, bobbins, parts for the textile

industry, medium for coating lines.

POM-C / POM-ELS* / POM-ESD* / POM-10PE

POM-ELS* (electrically conductive) black Variant of POM (Copolymere) with an improved electrical

conductivity. Volume resistivity ≤ 106 Ω, Surface resistivity ≤ 106 Ω.

POM-ESD* (antistatic) ivory Variant of POM (Copolymere) with an improved electrical

conductivity. Surface resistivity ≤1011 Ω.

POM-10PE Variant of POM (Copolymere) with improved sliding

properties for applications with an increased abrasion.

NHỰA PMMA

• TÊN THƯƠNG MẠI

• NHÀ CUNG CẤP

• TÍNH CHẤT

• ỨNG DỤNG

PMMA (Poly methyl mathacrylate )

CH2 C

n

CH3

COOCH3

PMMA (Poly methyl mathacrylate ) PMMA coù chöùa nhoùm ester ôû maïch nhaùnh, khaùng

thôøi tieát, beàn, tính chaát ñieän, khaùng hoùa chaát: axit nheï, kieàm, coàn 40%, daàu khoaùng, daàu diesel, daàu beùo. Nhöng bò tröông trong ete vaø tan haàu heát trong caùc dung moâi höõu cô.

Saûn phaåm PMMA trong nhö thuûy tinh, gaàn nhö truyeàn quang hoaøn toaøn (92%), chæ soá khuùc xaï 1,486 –1,496 vaø tính chaát quang hoïc vaãn giöõ ñöôïc ngoaøi trôøi trong thôøi gian daøi.

Nhöïa acrylate coù raát nhieàu chuûng loaïi, tính chaát vaät lyù khaùc nhau töø chaát ñaøn hoài ñeán chaát deûo cöùng. Phoå bieán laø PMMA vaø PAN (polyacrylonitrile )

PMMA phaûi saáy tröôùc khi gia coâng. Coù theå gia coâng baèng caùc pp: eùp phun, ñuøn, ñoå khuoân, ñònh hình nhieät.

PMMA thöôøng ñöôïc duøng laøm caùc loaïi ñeøn: , , ñ e ø n g ia o t h o â n g ñ e ø n ñ ö ô ø n g , …ñ e ø n x e

NHỰA PMMA

Polymethylmethacrylate is brittle and shows a good Mechanical strength, tensile strength and hardness. PMMA is also scratch-resistant and easy to polish.It shows a good temperature resistance and UV-stability. The operating temperature of PMMA ranges from -40 °C to approx. +70 °C.

NHỰA PMMA PropertiesProperties:

• very high mechanical strength and hardness• high mechanical rigidity• excellent transparency• easy to polish• good thermal stability• good insulation properties• low water absorption• excellent weather resistance• possible stress problems• low chemical resistance• brittle

Applications:Applications:• Display, advertisement, construction of apparatus, food

industry, tubes for lamps, conduit pipes for milk, hand rails, parts in the automotive.

NHỰA PC

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PC (Polycarbonate)

HO C

CH3

CH3

O C O

CH3

CH3

C OH

O

n

Polycarbonate PC

PC- tính chaátThaønh phaàn c a r b o n a t e trong caáu truùc

laøm PC coù tính dai vaø beàn, b is p h e n o l A cho tính chòu nhieät cao.

Polyester nhieät deûo, voâ ñònh hình. Chòu va ñaäp toát

Chòu nhieät cao, Tg =1500C.

Trong suoát (ñoä truyeàn suoát 88%).

Khaùng hoùa chaát keùm, deã bò thuûy phaân trong moâi tröôøng kieàm.

Khaùng chaùy raát toát.

- P C g ia c o â n g

PC ñöôïc gia coâng baèng pp eùp phun coù khoái löôïng phaân töû: 20.000 –30.000, pp ñuøn: >60.000, eùp thoåi: loïai PC coù ñoä nhôùt cao do maïch nhaùnh.

Tröôùc khi gia coâng thöôøng saáy 80-1200C.

PC cöùng neân raát khoù caét bavia

Saûn phaåm PC coù theå sôn, in, ñaùnh boùng vôùi moät soá maøu ñaëc bieät.

PC – öùng duïng

Do coù ñoä trong suoát cao, cô tính toát, PC ñöôïc söû duïng laøm caùc taám kính: Ñeøn tín hieäu giao thoâng, motor, muõ baûo

hieåm, ñóa trong (ñóa CD), coâng taéc,... Thieát bò ño ñaïc. Gia duïng: caùc loaïi hoäp, duïng cuï gia ñình cao

caáp, caùc loaïi bình, chai söõa, thuøng nöôùc uoáng duøng laïi...

NHỰA PC

PC Polycarbonate shows a high rigidity and an extreme impact strength. Also

it has a high glass transition temperature and temperature resistance (approx. +130 °C). The operating temperature ranges from -60 °C to approx. 120 °C.

Properties:• extremely high impact strength• high mechanical strength• high dimensional stability• high temperature resistance• good insulating properties• high resistance to radiation• medium chemical resistance• notch-sensitive and susceptible to stress crack formation• hydrolysis-sensitive

Applications:– Parts with a required high impact strength.

NHÓM NHỰA POLYESTER (PET – PBT)

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PTP : PET & PBT = 2 : (x P ET P o ly e t h y le n e

t e r e p h t h a la t e ) = 4 : x P B T ( P o ly b u t y le n e

)t e r e p h t h a la t e

HO CH2 x O C

O

C O

O

CH2n xOH

PTP- tính chaátPET raát cöùng, PBT meàm hôn chuùt ít vaø ñeàu

laø nhöïa baùn keát tinh. Khoûang nhieät ñoä noùng chaûy tm PET =255 - 2580 C, tm PBT =224 - 2280 C. Nhieät ñoä chuyeån thuûy tinh 50 - 700 C. P ET

k e á t t in h r a á t c h a ä m d o ñ o ù k h i

2 0 - 5 0la ø m n g u o ä i n h a n h ñ e á n 0 C t h u ñ ö ô ïc d a ïn g v o â ñ ò n h h ìn h

. t r o n g s u o á t

PTP khoù nöùt, khaùng traày xöôùc vaø coù tính tröôït toát, trong moâi tröôøng khoâng khí coù theå chòu ñöôïc nhieät ñoä töø –40 ÷1400 C. PTP töông ñoái oån ñònh döôùi taûi vaø ít bò raõo. Ít haáp thu nöôùc (baõo hoøa ôû haøm löôïng 0,3-0,5%)

PTP –Gia coâng PTP phaûi ñöôïc saáy tröôùc khi gia coâng ôû 1200

C ñeå traùnh hieän töôïng xaø phoøng hoùa.

PET gia coâng baèng pp eùp phun vôùi nhieät ñoä khuoân 125 - 1500 C vaø ñöôïc laøm nguoäi ñeán 20 - 500 C .

Saûn phaåm eùp phun coù ñoä co ruùt cao (1,5 –2,5%) nhöng chæ coù PBT cöùng môùi coù gia cöôøng maø phaûi coù thaønh ñuû daøy.

PTP –Saûn phaåm

PET ñöôïc söû duïng laøm caùc saûn phaåm trong suoát vaø coù tính chòu va ñaäp, ñaëc bieät söû duïng roäng raõi laøm caùc chai nöôùc coù gas.

PBT ñöôïc laøm caùc saûn phaåm cöùng nhö thanh ñôõ va chaïm, naép bình nhieân lieäu, tay naém cöûa, voû baøn uûi, baùnh raêng trong kyõ thuaät chính xaùc. PBT ñuøn phuû daây caùp quang vaø caùp xe hôi duøng ôû moâi tröôøng khaéc nghieät

NHÓM NHỰA POLYESTER PET Polyethylene terephthalate shows high tensile and mechanical strength,

hardness and toughness, low friction and a high dimensional stability. PET may be used at temperatures ranging from -20 °C to approx. +115 °C.

Properties:• high mechanical resistance and tensile strength• high surface strength• easy to varnish and polish• high dimensional stability• high toughness• good electrical insulating properties• high chemical resistance• limited dielectric properties• sensitive to hydrolysis

Applications:– Bearings, pumps and parts for housings, frame components, tank lids,

cogwheels, insulators for the electrotechnic, deflection rollers for the filament industry, levers, handles, control disks.

NHỰA ĐẶC BIỆT

• PPOPPO• PPEPPE• PEEKPEEK• PA MODIFIDEPA MODIFIDE• PEIPEI• PPE-PSPPE-PS• PPSPPS• PESUPESU• PTFEPTFE

NHỰA ĐẶC BIỆT

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NHỰA PPE PPE (PPO, Noryl®) Polyphenylenether belongs to the group of the amorphous materials and can be

used in temperatures ranging from -50 °C to approx. +105 °C. PPE exhibits a high impact strength, a low water absorption,a very high dimensional stability and a very low tendency to creep. The electrical properties will not be influenced by the surrounding frequencies and therefore can be used in a lot of applications in electrical engineering.

Properties:• high dimensional stability• low tendency to creep• high thermostability• high impact strength• good electrical characteristics over a wide frequency range• high resistance to hydrolysis• self-extinguishing• not resistant to some hydrocarbons

Applications:– Parts for electrical engineering and household– utensils, shafts, gear wheels, parts in the hydrolysis.

PPE-30GF– The 30% glass fibre reinforced PPE has an improved dimensional stability, a very

high stiffness and heat resistance that allows further uses.

NHỰA PVDF / PVDF-ELS*/ ECTFE PVDF Polyvinylidene fluoride shows a higher tensile strength, pressure resistance

and dimensional stability than the related PTFE, but friction and insulation properties are lower. PVDF has a high mechanical strength and toughness at lower temperature and it’s self-extinguishing. The temperature ranges from -300C to +1500C.

Properties:• high tensile strength• high mechanical strength• high rigidity (also at low temperature)• high chemical resistance• very low water absorption• good friction and wear and tear values• self-extinguishing• high UV–resistance• toxic fumes when burned• can not be solvent cemented• relatively high coefficient of thermal expansion

Applications:• Gaskets, pumps, rotation disks, valves, flap traps, centrifugals of extraction,

fittings, glide tracks, cogwheels.

NHỰA PVDF / PVDF-ELS*/ ECTFE ECTFE (Halar®) Ethylen-Chlortrifluorethylene exhibits an extraordinary impact strength at

temperatures ranging from -760 C to +1500C. A great part of the product properties attributes to the very smooth surface and differentiates HALAR® from other fluoropolymers. Due to the fact that ECTFE is very pure, this material is being used to process chemicals and ultrapure water for the semiconductor industry. Also the permeation resistance to oxygen, carbon dioxide, chlorine gas and hydrochlorid acid is 10 to 100 times better than PTFE.

Properties:• extremely high impact strength (up to -760 C)• good insulation properties• very good weather resistance• high resistance to radiation• very high chemical resistance• very good sliding properties• physiologically harmless• high density• limited protection against stress cracking at temperatures > 1400 C• non-consistent against hot amines

Applications:– Parts which come in contact with aggressive materials (e.g. machine-making

industry), lining of tanks, pumps, flanges, fittings, parts in centrifuges and control engineering industry.

NHỰA PSU / PPSU / PEIPSU Polysulfone shows great thermal stability (from -100 °C to +160 °C). PSU

possesses a high mechanical strength, very good dielectric properties and hydrolysis resistance and a high radiation resistance (permeable for microwaves). PSU has a low notch impact strength.

Properties:• high strength and rigidity• high impact strength (also at low temperatures)• very good dimensional stability• high chemical resistance• high resistance to all kinds of radiation• self-extinguishing• repeated sterilisation• a mediocre resistance to stress crack• not weather resistant

Applications:• Parts for microwave ovens, blow-dryers, parts for humidifiers, food-

industry, pump wheels, insulators, medical industry.

NHỰA PSU / PPSU / PEI PPSU Polyphenylensulfon is an amorphous material, with improved

impact and hydrolysis resistance compared to PSU. The usual operating temperature is approx. +180 °C. The extremely high notched impact strength remains also after a heat aging.

Properties:• high strength and rigidity• very high impact strength (also at low temperatures)• very good dimensional stability• very high chemical resistance• high resistance to all kinds of radiation• repeated sterilisation• lower chemical resistance than comparable semicrystalline materials

Applications:– as with PSU but with higher chemical resistance

NHỰA PSU / PPSU / PEI

PEI Polyetherimide has a high mechanical strength in connection with a good

chemical and heat resistance (operating temperature up to +170 °C), good dimensional stability and creep resistance. Its unique torque strength permits the economical substitution of machining fabricated small parts from steel.

Properties:• very high strength and rigidity• high torque strength and hardness• high thermostability• high weather resistance• high radiation resistance• self-extinguishing• limited resistance to stress cracks

Applications:– Parts for electrical engineering, food industry and in the aircraft construction.

NHỰA PPS / PPS-40GF PPS The linear Polyphenylensulfide belongs to the semi-crystalline materials

and offers a very high mechanical capacity, thermal- and chemical resistance distinguished at the same time (usual operating temperature up to approx. +150 °C), high dimensional stability and creep strength. The LOI belongs to the highest of the Polymers. By the reinforcement with glass fibres strength is achieved, which is comparable with light metal. PPS closes the gap between the technical synthetics and PEEK with its strength and economy.

Properties:• very high strength and rigidity• high hardness• high thermostability• high dimensional stability• very high chemical resistance• very good insulating properties• high weather resistance• high resistance to hydrolysis (only PPS virgin)

Applications:– Components in the machine-making, pump parts, fan parts, impellers,

parts in the fuel and automotive sector.

NHỰA PEEK / PEEK-mod / PEEK-30GF

PEEK Polyether etherketone can be used at very high temperatures (about +260 °C)

and it shows an extraordinary mechanical strength, toughness, hardness, flexural strength, torsional strength. PEEK exhibits excellent chemical resistance, very good dielectric properties up to +260 °C and a very good resistance to all kinds of radiation (even ultraviolet rays only lead to a slight yellow discolouration of its self-extinguishing properties according to UL 94.

Properties:• very high mechanical strength• very high rigidity (also at low temperature)• very high thermal stability• very high creep resistance• very high dimensional stability• very high radiation resistance• very high hydrolysis resistance• relatively low notch impact-strength• low resistance to acetone

Application:– Bearing shells, piston rings, valve seats, gears, seals, aviation, cog-wheels,

pump vanes, fittings, plug connectors, wafer carriers.

Comparison of plastics’ technical data

Comparison of plastics’ technical data

Comparison of plastics’ technical data

Comparison of plastics’ technical data

Comparison of plastics’ technical data

Comparison of plastics’ technical data