Rubber Gia Cong

7/27/2019 Rubber Gia Cong

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GIA CNG1. S luyn2. Hn luyn3. Thnh hnh4 L u ha. Lu ha


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SLUYNL bc u tin ca qu trnh phi trn

Mc ch:- Bin CS t dng n hi cao n trng thi

o ng- Gim sc cng b mt ca CS CS c kh

nn hi tr n i cc cht h ia

do qu cao cng lc ko gin,

cng, khng mn gim, bin hnh khi t tngln. Sp d b bt kh, r mt.

Cn thit cho CSTN ( do khng ng u).


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Nguyn l: di tc ng ca s ctx c c, c c p n t car on y ro s c tngn, cc ht cao su ln vra do

t ng c ng tr t n eo s n s ngngm cht n v ph gia khc


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Ccyut nhhng nqutrnhs luyn: r ng:oxy Nhit:+ 0 0+400C 1150C:hiuqu gimdn+1150C 1200C:hiuqu km(ccdyphnt n ra,trt

lnnhau httcdngdohadoc hc)+>1200C:oxyhamnh dotngnhanh bnc

knBanbury:T0C:160 1900C,t~34min:

+ Hi u u tt t hao nn l n+Kh ng u,yucunhit &thigianphitht

n nh


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Mycnh 2trc/4trc:

2trcr ngrutb nggan,thp

B phn iuchnhc lyca2trc B phn i uch nht t c2trc B phngiinhit

Mycn4trc:CS ng uhn,thigianng nhn,gimcnglao ngMytrnkn:

thaonnglng,hiuqu tt(160 1900

C/34min)


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cy ut n ng nqu tr n s uy n:

Ttctrc:cngln(1:1.15hoc1:1.25)hiusutcao Vntctrc:cngnhanh hiusutcao

y trc:c ngn usu tcao,n ngkhng cqunh (doscctxec hcrtcao) ng n rc:c ng n g ans uy nc ng

ng

n ng c p g a sung:c a o,c pepti,chthottnhb mt


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HN LUYNGiai anktipsaus luyn.B sungcht nvchtlu

ha,..

Yucu: , ,CSvph gia,tnhvncc, mn,th t b sungph gia..) Trnh im c CS u nhiu dn n su thai

Ccyut nhhng: BnchtCS(phncc,khngphncc,) docaCSsaus luyn Kh nngphntnhacht,ph gia,cht n ,votrc,lngtvotrc(xctin,toxp..),chtlmmm,chtluhasaucn

Nhit hnluyn


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Thit b h n luyn: gi ng s luyn- T t c trc nh hn (1:1,06 n 1:1,10)

- C ly khe trc, tc vng quay, gii nhit


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THNG S CNG NGH M tr n h:

Nhit

Th t cho cc ph gia Thi gian biu

My trn kn:

H s lm y Thi gian trn

t

Cng sut tiu tn


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Ccvn cacnluyn:

M luynqunh sovidungtchmy

HnhpnhiulaiCSkhng unhauG n ttrcc n ngt tS luynkhng hayqumcTh t b sun h iakhn n

Hnluynkhng nghayqumc


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Qu trnh cn doQu trnh cn do

Cao su Tnh cht gia cng Nhit trn Ghi ch

NBRTt. Cn do tng t

SBR

Bt u: nhit thp

Kt thc: 120- 1300C

> 0

= 0.9 1.0

Cho S vo trc

Khng cn do c

= 1.0

Cho S vo trc

C th pepti ha b ng

peroxid

n r n n caoDng ph

ng phptrn ngc khi hm

lng n cao

CR

Tt. Loi bin tnh bng

mercaptan Khng ha Cn tr n nhit thp

= 0.6 0.7

Cho MgO vo trc

o c. cng

: H s lm y


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Cao su Tnh cht gia cng Nhit trn Ghi ch

NR Tt, nhng cn cn Bt u:70 - 800Co c

IR

o u.dng cht pepti

Ch m dt: 120 - 1500C(trn kn)

= . .

Bt u 60 700C

SBR

. n o mau

ngoi tr SBR loi1000. c th dng pepti

Chm dt: 120 1500C

C th b vng ha khi T0

= 1.0

BR Xu. Kh cn do

Dng kt hp vi NRhoc SBR , nhng

nht

= 0.9 1.0

EPDMTt ty theo loi.Khng cn cn do

u: n p ng

hay 1000C

Kt thc: 130 1400C

Dng phng phptrn trc tip hay ongcty theo hmlng Than/ha d o


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TH T CHO PH GIA

Cht pepti c cho vo trc tin.

.

Cht ha do iu chnh nht hn hpcho thch h i vi vi c hn tn cht n.

Cht tng hot, cht phng lo


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HON TT

Cch li:

Talc

Tinh bt bin tnh

n nh: Sy Lm ngui

Hi phc


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QU TRNH CN TM

c i m:

Qu trnh lin tc. u rng c y n .

ng u ca sn hm ph thuc nhiu thngs.

Yu cu cng gh ng u b dy sn phm.

S kt dnh gia cc lp trong mng phc hp


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CC PHNG PHP CN TM

H my cn 2 trc

H my cn 4 trc


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TO HNH

CSkh:

Cntrng, pxu t, pkhun(pnn,pchuyn,ptim)

M Cs: Nhng(nhngtrctip,nhngvikhunc

cht ngkt,nhngkhunnngvolatexctnh

nhynhit), pxu t khun , .


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QUI TRNH TRNG

Trng dng dao Trng dng trc


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TRNG DUNG DCH DNG DAO


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QUI TRNH TRNG DUNG DCH DNG TRC


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QUI TRNH NHNG


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DY CHUYN TRNG DUNG DCH


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LU HA

T ng thi gian lu ha bao g m:

Thi ian nn nhi t v t li u ln n nhi t lu ha.

Thi gian cn thit sau khi nhit ln n

nhit lu haThi gian lu ha ti thiu xc nh bi 2 yu t:

Nhit ti a m vt liu cao su chu c (NR

- 0 - 0

iu kin gia cng vt liu trc khi lu ha.


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Hu lu ha

N u n tc Vt liu chm nng s chm ngui.

thp hn nhit nhit hot ha ca h luha.


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LU HA GIN ON

Lu ha b ng khng kh nng.

Lu ha trong t sy, l sy.

Lu ha bng hi nc

Hi nc t iu chnh nhit ca vt liu. Chv t li u n u i hi nc n n t cun c nhi ts gim p cc b s a hi nc n chngu

i.

Nhit vt liu ng u hn so vi trng hpkhng kh nng.

p dng cho hu ht cc vt liu nh cc snphm n, ng dn, rut xe, dy truyn lc


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LU HA GIN ON

Lu ha b ng mm p

Hiu qu truyn nhit cao do dn nhit. p dng cho h u ht cc sn ph m.

C th lu ha cho sn phm di, th d bng ti,y truyn c.

Cc thit b lu ha khc

Ct hi, mng hi.

Vng to ni p.


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LU HA LIN TCLu ha bn khn kh nn

L phng php c in. Ngy nay kt hp vi

UHF gi nhit sn phm trong sut qutrnh lu ha.

u im:

Sch n gin, d quan st theo di

D ki m sot do nhit tng chm

Khuyt im: u qu truyn n t t p

Chiu di dy chuyn di

,

bng peroxid


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Lu ha b ng b mu i

Lu ha b ng mi trng lng

Cht ti nhit l hn hp KNO3(53%),NaNO

240% , NaNO

37% . T

m=140 C, d=2.15

(250C); d=1.90 (2500C)

p p c ng v u n

Dm vt liu bng bng ti


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Thit b lu ha bn b mui

A: My n v u to hnh B: Bng ti

C: B mui vi bng chuyn D: Thit b ra

E: Thit b lm ngui F: Thit b ko

G: Thit b cun


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LU HA TNG SI

Dng ht thy tinh hnh cu truyn

Hi nng hoc hi qu nhit c thi

Sau khi lu ha sn phm phi qua thitp sc c c y n .


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LU HA LIN TC BNG B MT NNG

Thit b lu ha lin tc bng ti


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