Volume 30, Issue 4 pp. 932-940
RESEARCH ARTICLE

Applications of α, ω-telechelic polydimethylsiloxane as cross-linkers for preparing high-temperature vulcanized silicone rubber

Fuying Dong

Fuying Dong

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

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Xianpeng Wang

Xianpeng Wang

Shandong Provincial Key Laboratory of Biomedical Polymers, Shandong Academy of Pharmaceutical Sciences, Jinan, 250101 P. R. China

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Shuaijie Li

Shuaijie Li

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

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Jiawen Hao

Jiawen Hao

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

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Xinde Tang

Corresponding Author

Xinde Tang

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

Correspondence

Xinde Tang, Institute of New Materials, Shandong Jiaotong University, Jinan 250357, P. R. China.

Email: [email protected]

Shengyu Feng, Key Laboratory of Special Functional Aggregated Materials and Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, P. R. China.

Email: [email protected]

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Rui Kuang

Rui Kuang

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

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Yanmin Wang

Yanmin Wang

Institute of New Materials, Shandong Jiaotong University, Jinan, 250357 P. R. China

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Shengyu Feng

Corresponding Author

Shengyu Feng

Key Laboratory of Special Functional Aggregated Materials and Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan, 250100 P. R. China

School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100 P. R. China

Correspondence

Xinde Tang, Institute of New Materials, Shandong Jiaotong University, Jinan 250357, P. R. China.

Email: [email protected]

Shengyu Feng, Key Laboratory of Special Functional Aggregated Materials and Key Laboratory of Colloid and Interface Chemistry (Shandong University), Ministry of Education, Jinan 250100, P. R. China.

Email: [email protected]

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First published: 07 January 2019
Citations: 4

Abstract

Multiamino-terminated telechelic polydimethylsiloxane (MATTPS) was synthesized via aza-Micheal reaction and amidation reaction and subsequently employed as cross-linkers of polysiloxane containing γ-chloropropyl groups (CPPS) for preparing a series of high-temperature vulcanized silicone rubber (MCSR/MATTPS). The curing, mechanical, and thermal properties of MCSR/MATTPS were studied through rheometry, mechanical testing, and thermogravimetric analysis (TGA). MCSR/MATTPS exhibits optimal mechanical properties with a tensile strength of 9.52 MPa and tear strength of 45.4 kN/m when the molar ratio of [N–H]/[CH2CH2CH2Cl] is of 1, which is attributed to the formation of concentrative cross-linking in the three-dimensional polymer networks. The thermal behaviors of MCSR/MATTPS display a two-step weight loss process by heating in nitrogen whereas more than two weight loss process in air. TGA results indicate that the introduction of aliphatic long chain and carbonyl groups in the structure of MATTPS has little negative effect on the thermal stability of MCSR/MATTPS.

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