不饱和聚酯片状模塑料的模压成型与性能

doi:10.11944/j.issn.1000-0518.2018.10.170355

摘要/Abstract

摘要：

采用模压成型的方法制备了不饱和聚酯片状模塑料(UP-SMC)制品,通过万能试验机、热重分析、动态热机械分析、氧指数和纳米压痕技术研究了制品的力学性能、热稳定性能和阻燃性能。结果表明,UP-SMC制品的弯曲强度和冲击强度分别达到203.4和94.2 MPa,由树脂过渡到纤维的各相微观力学性能是不同的。该制品的玻璃化转变温度为169.4 ℃,在N₂气气氛下失重5 %(T_d5)和最大失重速率(T_dmax)对应的温度分别为333.5和389.7 ℃,600 ℃的质量保留率大于75%,极限氧指数为25.7%,表明该UP-SMC制品具有优异的力学性能和热稳定性能。

关键词: 片状模塑料, 模压成型, 力学性能, 热稳定性能

Abstract:

The unsaturated polyester resin sheet molding compound(UP-SMC) products were prepared by compression molding. The mechanical properties, thermal stability and flame retardant performance of UP-SMC products were characterized by the universal testing machine, thermogravimetric analysis, dynamic mechanical analysis, limiting oxygen index and nanoindentation technology. The results show that the bending strength and impact strength of UP-SMC products are up to 203.4 and 94.2 MPa, respectively, and the micromechanical properties are different from resin to fiber phases. The glass transition temperature is 169.4 ℃, the temperature at 5% mass loss(T_d5) and maximum mass loss rate(T_dmax) are 333.5 and 389.7 ℃, respectively. The residue at 600 ℃ is up to 75%, but the limiting oxygen index is only 25.7%, indicting that the prepared UP-SMC products have excellent mechanical and thermal stability properties.

Key words: sheet molding compound, compression molding, mechanical properties, thermal stability

陈明锋, 刘玉惠, 范先谋, 杨松伟, 林金火, 刘灿培, 黄海滨. 不饱和聚酯片状模塑料的模压成型与性能[J]. 应用化学, 2018, 35(10): 1222-1226.

CHEN Mingfeng, LIU Yuhui, FAN Xianmou, YANG Songwei, LIN Jinhuo, LIU Canpei, HUANG Haibin. Preparation and Properties of Unsaturated Polyester Resin Sheet Molding Compound[J]. Chinese Journal of Applied Chemistry, 2018, 35(10): 1222-1226.

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