硅橡胶弹性体-硅胶原料批发
Silicone Elastomers 硅胶弹性体
Silicone HTV 高温硫化硅橡胶
? Definition 定义
(1) HTV : High Temperature Vulcanizing 高温硫化硅橡胶
(2) HCR : Heat Cured Rubber 热固化硅橡胶
(3) HVR : Heat Vulcanizing Rubber 热硫化硅橡胶
(4) HCE : Heat Cured Elastomer 热固化弹性体
(5) Millable silicone rubber 可轧制硅橡胶
? Description 描述
(1) Using linear polyorganosiloxane(Silicone gum) with high degree of polymerization and vinyl group as a main raw materials
用线性聚硅氧烷和乙烯基作为主要原料进行高度聚合
(2) Manufacture the Base Rubber by compounding with reinforcing fillers (synthetic silica etc.) and various materials granting special properties and additives 用原料和填充剂（如无机硅土）以及各种添加剂混合。
(3) And then cure the compounds at high temperature(100 ~ 200 ℃) after mixing catalysts 混合催化剂后，在100~200度的温度下，进行充分固化。
# It becomes the HTV silicone rubber 通过上述步骤，HTV就制造完成
Synthesis of silicone gum for HTV HTV的合成
Synthesis of silicone gum for HTV HTV的合成
Degree of polymerization 聚合的程度决定产品的类型
X = 50 – 2,000
for room-temperature vulcanization (RTV) &
liquid type silicone rubber (LSR)
当聚合度达到50~2000时，生产出来的产品是RTV和LSR
X = 3,000 – 10,000
for high consistency compositions like gum, HTV
当聚合度达到3000~10000时，生产出来的产品是HTV
Silicone gum 硅橡胶的分子特性
- Molecular weight : ab. 400,000 ~700,000 分子量:大约400,000~700,000
- Generally, we use the linear high degree of polymerization (5,000~10,000 siloxane units) polyorganosiloxane(gum) 通常，我们用直链程度高的聚硅氧烷去聚合(有5000~10000硅氧烷单位）
Raw materials & functions 原材料及其功能
Properties and Use of Silicone Rubber 硅橡胶特性和用处
PDMS-Silica Interaction : H-bonding
聚二甲基硅氧烷-硅交联：H型键
HTV Manufacturing process HTV生产过程
HTV Rubber parts making HTV制品的生产过程
Curing Agents 硫化剂（催化剂）
Cross-linking of HTV silicone rubber HTV的交联反应
Characteristics of Silicone Elastomers 硅胶弹性体的特性
Advantages 优点
(1) Heat resistant : Usable over 200℃ for long time 耐热性能：能在超过200度的环境中长期使用
(2) Cold resistant : Flexible at -50℃ ~ -90℃ 耐低温：在-50度~-90度，仍保持柔软性
(3) Good mechanical properties : At high temperature condition 在高温环境下保持良好机械性能
(4) Good electrical properties : Less changeable by temperature change 优良的电气性能：温度的变化对电气性能影响很小
(5) Ozone resistant & Good weather ability 抗臭氧和良好的耐候性能
(6) Flame retardant : Low-toxic gas & good flame retardant 燃烧产生的气体低毒，良好的阻燃性
(7) Good chemical resistant : Low swelling in acid, base & polar organic compound 良好的耐化学试剂性能：耐酸碱，耐极性化合物。
(8) Excellent gas permeability : Possible to medical devices by optional gas permeability 良好的透气性能：用于医疗设备（由于可选择的透气性能）。
(9) Water repellent & release ability 吸水性小和恢复快
Weak points 缺点
(1) Mechanical strength 机械强度
(2) Abrasion resistance property 抗磨损性能
(3) Oil & solvent stability 有机溶剂中的稳定性能
Why use silicone elastomers? 使用硅胶弹性体的原因
Comparing with organic materials 多种有机材料的对比
