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烷氧基硅烷低聚物改性球形硅微粉及其应用
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作者 耿学辉 易生平 +5 位作者 贾浩哲 李丽芬 张巍 阮建军 曹家凯 黄驰 《有机硅材料》 CAS 2024年第5期8-12,共5页
分别以自制乙烯基烷氧基硅烷低聚物、氨基烷氧基硅烷低聚物、多元烷氧基硅烷低聚物为改性剂,对液相法球形硅微粉进行表面改性,通过红外光谱、扫描电镜、粒度分布仪等表征了改性剂的结构、硅微粉微观形貌及粒径分布,并考察了改性硅微粉... 分别以自制乙烯基烷氧基硅烷低聚物、氨基烷氧基硅烷低聚物、多元烷氧基硅烷低聚物为改性剂,对液相法球形硅微粉进行表面改性,通过红外光谱、扫描电镜、粒度分布仪等表征了改性剂的结构、硅微粉微观形貌及粒径分布,并考察了改性硅微粉对环氧树脂力学性能的影响。结果表明,采用实验合成的改性剂对液相法球形硅微粉进行表面处理后,硅微粉的粒径增大且尺寸均一性提高,硅微粉颗粒间夹杂碎片杂质的情况得到改善,添加到环氧树脂体系后材料的力学性能提高。 展开更多
关键词 烷氧基硅烷低聚物 球形硅微粉 环氧树脂 力学性能 改性
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A Boron-based Adhesion Aid for Efficient Bonding of Silicone Rubber and Epoxy Resin
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作者 王安东 ZHOU Peng +6 位作者 TANG Xiaolin yi shengping ZENG Qihui ZHANG Zhiqiang HU Mingjie 廖俊 黄驰 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第3期718-724,共7页
We improved the adhesion between silicon based insulating materials and epoxy resin composites by adding the adhesion promoter cycloborosiloxane(BSi,cyclo-1,3,3,5,7,7-hexaphenyl-1,5-diboro-3,7-disiloxane).The experime... We improved the adhesion between silicon based insulating materials and epoxy resin composites by adding the adhesion promoter cycloborosiloxane(BSi,cyclo-1,3,3,5,7,7-hexaphenyl-1,5-diboro-3,7-disiloxane).The experimental results show that the addition of BSi in the silicone rubber(SR)system significantly increases the tensile shear strength between BSi and epoxy resin(EP),reaching 309%of the original value.On this basis,the mechanism of BSi to enhance the adhesion effect was discussed.The electron deficient B in BSi attracted the electron rich N and O in EP to enhance the chemical interaction,combined with the interfacial migration behavior in the curing process,to improve the adhesion strength.This study provides the design and synthesis ideas of adhesive aids,and a reference for further exploring the interface mechanism of epoxy resin matrix composites. 展开更多
关键词 boron based adhesion promoter epoxy resin composites silicone rubber adhesion mechanism
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Modification of Liquid Silicone Rubber by Octavinyl-polyhedral Oligosilsesquioxanes and Silicon Sol 被引量:1
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作者 白洪强 yi shengping +2 位作者 huang chi 黎厚斌 廖俊 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第2期229-236,共8页
To develop an efficient and bio-compatible way to improve the thermal and mechanical properties of addition type liquid silicone rubber(LSR), a series of modified LSR samples were prepared by introducing octavinyl-p... To develop an efficient and bio-compatible way to improve the thermal and mechanical properties of addition type liquid silicone rubber(LSR), a series of modified LSR samples were prepared by introducing octavinyl-polyhedral oligosilsesquioxanes(VPOSS) and high purity silicon sol singly or in combination before vulcanization. Significant correlation was found between the loading rate of VPOSS and thermal properties. However, mechanical properties were negatively correlated with VPOSS content within the range experimented, which may be ascribed to material defect caused by uneven distribution and aggregation. Furthermore, test results approved that the introducing of silicon sol indeed affected the stabilities of the polymer by restraining the material defect caused by the aggregation of POSS molecules and improving cross link density. For example, adding 10%-20% of silicon sol into VPOSS(1.0%) modified LSR will increase tear resistance by 43.9%-85.7%, elongation at break by 31.7%-57.3%, residue at 800 ℃ in N2 atmosphere by 32.0%-37.9%, residue at 650 ℃ in air atmosphere by 70.9%-91.6%, respectively. This work proves that, to incorporate VPOSS into LSR by hydrosilylation, and to use silicon sol as dispersant and reinforce filler can become an efficient way to improve the mechanical property, thermal stability and bio-compatibility of LSR in the future. 展开更多
关键词 POSS LSR silicon sol thermal stabilities mechanical properties
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