Moisture-curable rubbers

湿气固化橡胶

• 批准号: 58850187
• 负责人: YAMASHITA Shinzo
• 金额: $ 5.44万
• 依托单位: Kyoto Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1983
• 资助国家: 日本
• 起止时间: 1983 至 1985
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-58850187/
• 关键词: moisture-cure; aminopropyltriethoxysilane; silane coupling reagent; epichlorohydrin rubber; chlorinated polyethylene; クロロプレンゴム

1. Moisture-cure of epichlorohydrin rubber (ECO) ECO compounded with aminopropyltriethoxysilane (APS) and dibutyltin dilaurate (DBTDL) was moisture-curable; the resulting network-chain density attained 5 x <10^(-4)> mol/ <cm^3> and the maximum tensile strength was 7.0 MPa. This elastomer showed an extremely high hygroscopic nature due to hydrophilicity of ECO.2. Moisture-cure of chlorinated polyethylene (CPE)Low reactivity in chlorine of CPE prevents grafting reaction with APS even after an addition of DBTDL. And thus, CPE cannot be cured with moisture.3. Moisture-cure of chloroprene rubber (CR)CR compounded with APS and DBTDL was moisture-curable; the network-chain density was 3 x <10^(-4)> mol/ <cm^3> and the maximum tensile strength was 10 MPa. However, an unavoidable prevulcanization reaction between CR and APS reduced the tensile strength.4. ConclusionHalogen containing polymers, 1-chlorobutadiene-butadiene copolymer, chlorinated butyl rubber, brominated butyl rubber, chlorosulfonated polyethylene, epichlorohydrin rubber, and chloroprene rubber were moisture-curable in the presence of APS and DBTDL. The resulting elastomers gave relatively high tensile strength which were comparable with those of usual heat-vulcanizated rubbers. Investigations of the moisture-curing reaction enabled us to determine the optimal reaction conditions. Silica composites gave the moisture-cured rubber high reinforcing effects. From these results, we could prove a feasibility of moisture-cure.

1.环氧氯丙烷橡胶(ECO)与氨基丙基三乙氧基硅烷(APS)和二月桂酸二丁基锡(DBTDL)共混物的湿法硫化是湿法硫化的，其网链密度可达5×10~(-4)~(-4)~(-4)~(-5)，最大拉伸强度为7.0 Mpa。由于ECO2的亲水性，该弹性体表现出极高的吸湿性。氯化聚乙烯(CPE)的湿固化CPE在氯中的低反应性阻止了与APS的接枝反应，即使在添加DBTDL后也是如此。因此，CPE不能用保湿治愈。APS、DBTDL与氯丁橡胶(CR)共混的氯丁橡胶(CR)是湿法硫化的，网链密度为3xlt；10^(-4)&gt；mo1/lt；cm3&gt；最大拉伸强度为10 Mpa。然而，CR和APS之间不可避免的预硫化反应降低了拉伸强度。结论含卤素聚合物、1-氯丁二烯-丁二烯共聚物、氯化丁基橡胶、溴化丁基橡胶、氯磺化聚乙烯、环氧氯丙烷橡胶和氯丁橡胶在APS和DBTDL存在下均可湿式硫化。所得弹性体具有相对较高的拉伸强度，与普通热硫化橡胶的拉伸强度相当。对湿固化反应的研究使我们能够确定最佳的反应条件。白炭黑复合材料使湿法硫化橡胶具有较高的补强效果。从这些结果中，我们可以证明湿养护的可行性。

项目成果

International Rubber Conference 1985, Kyoto, Full Texts. p.268 (1985)

1985 年国际橡胶会议，京都，全文。

Preprints of the 52nd Spring Meeting of Chemical Society of Japan. p.1373, 2269, 2275 (1986)

日本化学会第 52 届春季会议预印本。

International Rulaer Conference,1985,Kyoto. 268 (1985)

国际规则会议，1985 年，京都。

Die Makromolekulare Chemie. 186巻. 1373 (1985)

分子化学 186. 1373 (1985)

Die Makromolekulare Chemie. 186巻. 2269 (1985)

分子化学 186. 2269 (1985)