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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (2): 87-93.doi: 10.3969/j.issn.0253-2417.2018.02.012

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Synthesis of Rosin Based Crosslinking Agent and Its Effect on Properties of Cured Silicone Rubber

LI Qiaoguang1, LIU He1, LI Jianfang2, SHANG Shibin1, SONG Zhanqian1   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Nanjing Tianyi Patent Agency Co., Ltd., Nanjing 210042, China
  • Received:2017-09-24 Online:2018-04-25 Published:2018-04-28

Abstract: Rosin modified aminopropyltriethoxysilane(RA) was obtained via rosin derivatization reaction. RA was used as crosslinking agent to prepare rosin based room temperature vulcanized silicone rubber and to study its effect on the morphology, mechanical and thermal properties of rubber. It was found that rosin based silicone rubber had better mechanical and thermal properties than those of the traditional silicone rubber. The tensile strength and elongation at break of rosin based silicone rubber were 0.51 MPa and 353% respectively, under the conditions of 11.1 g RA and 30 g hydroxyl terminated polydimethylsiloxane as primary polymers. Compared with the traditional silicone rubber, tensile strength and elongation at break of rosin increased by 11% and 84%, meanwhile the maximum weight loss rate temperature was 592℃, rising by 201℃. Correspondingly, the residual rate at 800℃ increased by 4.17% and the glass transition temperature of the silicone rubber also increased slightly.

Key words: rosin, silicone rubber, crosslinking agent, characterization

CLC Number: