O‐ring materials for Hydrogen Station DevicesMay 03, 2017 · O‐ring materials for Hydrogen Station Devices ... №3 -47 EPDM1 Naphtenic Oil 0 №4 -48 EPDM2 DOA 10 №5 -41 EPDM2

髙石工業株式会社

O‐ring materials forHydrogen Station Devices

April 2017Takaishi Industry Co.,Ltd.

www.takaishi‐ind.co.jp 1


About Us

• Takaishi Industry Co.,ltd.• Headquarter: Osaka, Japan• Established :1948• Employee: 80• Main products: Precise rubber sealings, O‐rings• Factories: 3 in Japan, 1 in Vietnam



Application


ShowerAir pump

Household fuel cell system

LP‐gas cylinder Floor heating system

frost protection system

Toilet seat with bidet functions

Faucet


4

Accumulator

Dispenser

CompressorFCV

〜90MPa 70MPaHydrogen charge bypressure difference

Hydrogen gasProduction facility

Breakaway Device

Breakaway Devices in hydrogen station

• During hydrogen charge process to FCV, the hydrogen dispenser and FCV are connected by flexible hydrogen hose. "Breakaway Devices" are used for safe disconnection of FCV from the dispenser without any hydrogen gas leak, in the case of unexpected motion of FCV.

• Required specification of O-ring for breakaway devices*Hydrogen charge time: <3 minutes*Hydrogen Pressure range: 0‐70MPa*Temperature range: -40°C- 85°C (Pre-cool T40)

www.takaishi‐ind.co.jp



Solute gas

Desorption of solute gas

BubbleCrack

Compression under high pressure Decompression

Blister Fracture



Gland

Overflow FractureO-Ring

Gland Increment of swelling H2


Associating with Academia


HYDROGENIUS （in the Ito‐Campus of Kyushu University）Research Center for Hydrogen Industrial Use and Storage


8

The improvement O‐ring performance in low temperature.

Ⅰ Ⅱ ⅢFIller（phr） 50 0Polymer EPDM1 EPDM2 EPDM3

Plasticizer DOA DOSNaphtenic

oilPlasticizer（phr） 20 10 0

Vulcanizer *1 *2 *3

Vulcanizer（phr） 5 2.5 7.5Temperature（℃） 170 160 180Time（min） 10 7 12

Tg（℃） Polymer PlasticizerPlasticizer

(phr)

№1 -59 EPDM1 DOA 20№2 -53 EPDM1 DOS 10№3 -47 EPDM1 Naphtenic Oil 0№4 -48 EPDM2 DOA 10№5 -41 EPDM2 DOS 0№6 -44 EPDM2 Naphtenic Oil 20№7 -44 EPDM3 DOA 0№8 -57 EPDM3 DOS 20№9 -46 EPDM3 Naphtenic Oil 10

№10 -57 EPDM1 DOA 20№11 -51 EPDM1 DOS 10№12 -46 EPDM1 Naphtenic Oil 0№13 -45 EPDM2 DOA 10№14 -40 EPDM2 DOS 0№15 -43 EPDM2 Naphtenic Oil 20№16 -44 EPDM3 DOA 0№17 -57 EPDM3 DOS 20№18 -46 EPDM3 Naphtenic Oil 10

L18 control factors

The examination is performed by the orthogonal array experiment (L18) to obtain guidelines for the improvement O-ring performance in low temperature.

*1 1,3‐bis(tert‐butylperoxy isopropyl)benzen*2 dicumyl peroxide*3 2,5‐dimethyl‐2,5‐di(tert‐butyl peroxy)hexane

L18 experiment orthogonal table


Results of Orthogonal Array Experiment (L18)

9

SNra

tio

PlasticizerPlasticizer contentFiller

Vulcanizer, Vulcanized condition

Polymer

According to the factorial effect diagram, the polymer class, the plasticizer class and ratio are important.

SN ratios are calculated from the result of the dynamic viscoelastic examination of each rubber material which is made by L18 experiment.

The specimen with larger SN ratio contrast, shows the wider seal temperature range of high pressure hydrogen.


Need to put more plasticizer to improve performance in low temperature …


10

Pictures of cross section of O-rings after permeation & cycle test at 85℃

Polymer Pb Polymer PcPolymer Pa

Leak

Leak

Leak

Leak

Leak

Leak

No Leak

No Leak

No Leak



• HyTReC (Hydrogen energy Test and Research Center)

11www.takaishi‐ind.co.jp

（Fukuoka Pref.）

Collaborating with testing institutions


EPDM 70 EPDM 90

Pressure 0.6MPa⇔90MPa 0.6MPa⇔90MPa

Air temperature ‐40 ‐40

Gas temperature ‐40 ‐40

Number of cycle 6600 6600

Cycle time 6sec. 6sec.

Result NO LEAK NO LEAK

The appearanceFrom outside

12

H2 Pressure cycle test




Commercialized in Japan(2014～)


Hannover Messe （2014～）



Visiting Los Angeles(USA)



16

AccumulatorDispenser

CompressorFCV

Hydrogen Generator

Applications for hydrogen station

Fitting, Joint NozzleReceptacle

BreakawayDeviceValve

O‐rings, Gaskets www.takaishi‐ind.co.jp

Regulator

16


17

Thank you for your kind attention!!

Contact to: Hideyuki Takaishi (President)

[email protected]

AcknowledgementsThis presentation is based on results obtained from a project commissioned by the New Energy and Corporation Technology Development Organization (NEDO).

The specifications given in this document are subject to change without notice.The figures are measured values, not the values for guaranteeing.Copyright © 2008‐2017 Takaishi‐industry co., ltd. All rights reserved.



Japan Night !!• 25/4/2017 16:30‐

at D63, Hall27

• Sake, Sushi, Japanese foods…

• Everybody, easy come !!


Documents

O‐ring materials for Hydrogen Station DevicesMay 03, 2017 · O‐ring materials for Hydrogen Station Devices ... №3 -47 EPDM1 Naphtenic Oil 0 №4 -48 EPDM2 DOA 10 №5 -41 EPDM2