蒙脱土增强二聚酸改性不饱和聚酯树脂的制备及性能

doi:10.11896/j.issn.1005-023X.2018.18.027

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Abstract The OMT/DFA/UPR hybrid materials and OMT/DFA/UPR composites were prepared by in-situ polymerization and mechanical blending respectively, which were composed of organic montmorillonite (OMT) containing epoxy group and C₃₆ dimer fatty acid (DFA) modified unsaturated polyester resin (UPR). The material structure, dispersion degree of OMT, morphology of the tensile fracture surface, and elemental composition of the fracture surface were analyzed by FT-IR, XRD, SEM, and EDS. It was found that OMT grafted onto the DFA/UPR backbone by chemical bonds, and the material exhibited ductile fracture. In this study, the effects of the additive amount and method of OMT on the thermal stability and mechanical property of the material were investigated by TG, DSC, tensile test, flexural test, and hardness test. When 0.6% (mass fraction) OMT was added, the OMT/DFA/UPR hybrid material showed the optimum property, the initial thermal decomposition temperature, elongation at break, elasticity modulus, and flexural strength increased by 11.3%,30.6%,88.7%, and 26.9%, respectively, compared to DFA/UPR. However, in addition to the elongation at break of OMT/DFA/UPR composites increased by 22.8%, the remaining properties improved little or even decreased.

Key words： montmorillonite dimer fatty acid unsaturated polyester resin in-situ polymerization mechanical blending

Published: 18 October 2018

CLC number:

TQ322.4+1

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	Articles by authors
	GUO Yanting
	HUANG Xue
	YIN Yaoqi
	CHEN Man
	FENG Guangzhu

Cite this article:

GUO Yanting,HUANG Xue,YIN Yaoqi, et al. Preparation and Properties of Unsaturated Polyester Resin Modified by Montmorillonite and Dimer Fatty Acid[J]. Materials Reports, 2018, 32(18): 3249-3254.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.18.027 OR http://www.mater-rep.com/EN/Y2018/V32/I18/3249

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