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SHIRE GROUP

Address: No.1 East Dianxin Road, Rugao, Jiangsu - SHIRE INDUSTRIAL PARK

E-mail：shire@shire-tech.com

Tel：（+86）513-87875566
Fax：（+86）513-87998966/4008280862

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集团简介

20余家国家及地区的应用

江苏世睿集团有限公司系国家高新技术企业，江苏省民营科技企业。自成立始，公司从高分子新材料的研究出发，积极向下游延伸，形成从材料、零件、部件、方案设计到工程服务的产业链组合。

集团下设四个子公司，形成“四类产品+工程服务”五大业务，其中四类产品为高分子新材料及制品、胶布类制品、特种橡胶制品和智能储油柜。世睿为全球电力、轨道交通、高端诊疗设备和通讯等行业提供国际领先的产品、解决方案和服务。

凭借集团产业链组合与行业资源共享的优势，世睿将持续聚焦客户关注的难题，以精湛技术和尽心服务赢得所涉足业务领域的领先地位，为相关方创造最大价值。

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Special Rubber Products

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Cork Rubber

Transformer noise has been a common issue in the industry, which has a great effect on people's everyday life and work. SHIRE GROUP HENRUI polymer material research team successfully developed a new cork rubber material for transformer by advanced material selection and formula design. This new type composite material is made of pure granular cork, oil-resistant rubber and some chemical auxiliaries. It shows great performance of both cork and rubber, which is compressible and elastic. There is only small deformation around when the product is compressed. And it has comparatively high hardness with good compression resistance, oil resistance, abrasion resistance and waterproof, which can effectively reduce the noised caused by transformer vibration.

Technical advantages

Cork rubber is a kind of polymer rubber compound material made by mixing NBR and cork powder with both of their advantages such as aging resistance, anti-hydrolysis, compression resistance, high oil resistance and excellent elasticity. SHIRE cork rubber has following advantages.

1. Excellent anti-vibration

Cork rubber structure is similar like sponged rubber that its volume will change under pressure and recover without pressure, which has a good anti-vibration function.

2. Excellent oil resistance and aging resistance

Cork powder can improve the oil resistance and aging resistance of rubber. Its weight change is less than 1% after immersed in 120℃ transformer oil for 168h. And aging factor is less than 0.9 after aging in 100℃ hot air for 24h.

3. Excellent elasticity

Cork cell can release air under pressure and absorb air without pressure. It can recover 85% of original thickness for a certain time and has good elasticity after long time compression.

DATA SHEET

Item	Control Value
Hardness(Shore A)	70±10
Tensile Strength, MPa	＞ 2.0
Elongation at break, %	＞ 70
Hot Air Compression Set, %	＜ 55.0
25# Transformer Oil Immersed Compression Set, %	＜ 80.0
Compressibility, %	20±5
Elasticity, %	＞ 75
Brittle Temperature, ℃	≤ -40
25# Transformer Oil Immersed Volume Change, %	0~10.0
25# Transformer Oil Immersed Hardness Change	-8.0~2.0

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