Preparation and properties of waste epoxy resin/polyamide composite materials

doi:10.19491/j.issn.1001-9278.2024.12.021

Abstract

Abstract:

To address the difficulty in waste epoxy resin （EP） recycling， EP was used as a filling material for the modification of polyamide 66 （PA66）. PA66 grafted with maleic anhydride （PA66⁃g⁃MAH） was prepared as a compatibilizer through melt grafting for enhancing the compatibility between PA66 and EP. Then， PA66/EP/PA66⁃g⁃MAH compounds were prepared through melt extrusion and characterized by using universal mechanical testing machine， thermogravimetric analyzer， and scanning electron microscope. The effects of different compatibilizer content on their mechanical properties， thermal properties and microscopic morphology were investigated. The addition of PA66⁃g⁃MAH enhanced the compatibility of the compounds， resulting in an increase in the tensile strength and elastic modulus. The PA66/20 wt% EP/3 wt% PA66⁃g⁃MAH compound exhibited the optimal comprehensive mechanical performance with tensile strength of 69.2 MPa and an elastic modulus of 678.3 MPa. Moreover， the addition of PA66⁃g⁃MAH also increased the initial decomposition temperature and the temperature corresponding to the maximum decomposition rate.

Key words: waste epoxy resin, polyamide 66, maleic anhydride grafted polyamide 66, modification

CLC Number:

TQ323.6

HU Peng, XU Hao, CAI Shaojun. Preparation and properties of waste epoxy resin/polyamide composite materials[J]. China Plastics, 2024, 38(12): 138-142.

Figures/Tables 10

样品编号	质量份数/%
样品编号	PA66	EP	PA66⁃g⁃MAH
1^#	90	10	0
2^#	80	20	0
3^#	70	30	0
4^#	90	10	3
5^#	80	20	3
6^#	70	30	3
7^#	90	10	5
8^#	80	20	5
9^#	70	30	5
10^#	90	10	10
11^#	80	20	10
12^#	70	30	10

Tab.1. Preparation formula of PA66⁃g⁃MAH /EP/PA66 composite

Fig.1. Polarizing microscope image of EP

Fig.2. Melt morphology of PA66 and EP/PA66 composite

Fig.3. Tensile strength curve of EP/PA66 composite material

Fig.4. Elastic modulus curve of EP/PA66 composite material

样品	断裂伸长率/%
样品	纯PA66	10 %EP	20 %EP	30 %EP
无相容剂	27.8	7.5	6.0	5.7
3 %相容剂	⁃⁃	7.5	7.0	6.9
5 %相容剂	⁃⁃	8.1	6.7	6.6
10 %相容剂	⁃⁃	6.7	7.3	5.8

Tab.2. Elongation at break of EP/PA66 composite

Fig.5. TG curves of EP/PA66 composite materials

Fig.6. The change curves of the initial decomposition temperature and the temperature corresponding to maximum decomposition rate of PA66⁃g⁃MAH/EP/PA66 composite materials

Fig.7. SEM of the EP/PA66 composites

Fig.8. SEM of the PA66⁃g⁃MAH/EP/PA66 composites

References 17

1	李婧，李迎春，孙孝文. 废印刷电路板非金属粉回收利用［J］. 科技与企业，2013，248（23）：355.
2	郝娟娟，王乙舒，吴玉峰，等. 废线路板非金属材料回收利用技术现状与展望［J］. 材料导报，2021，35（07）：7 001⁃7 012.
	HAO J J， WANG Y S， WU Y F，et al. Current situation and prospect of recovery and utilization of non⁃metal materials of waste printed circuit board［J］. Materials Reports，2021，35（07）：7 001⁃7 012.
3	赵斌，武晓燕，魏显珍，等. 废线路板资源化回收技术研究与展望［J］. 再生资源与循环经济，2016，9（08）：31⁃34+38.
	ZHAO B， WU X Y， WEI X Z，et al. Research and prospects of recycling technology of waste printed circuit boards［J］. Recyclable Resources and Circular Economy，2016，9（08）：31⁃34+38.
4	邱军，李娜，刘光富. 废弃线路板中非金属材料再利用的研究进展［J］. 工程塑料应用，2011，39（02）：91⁃95.
	QIU J， LI N， LIU G F. Progress in research of reusing of nonmetallic materials in waste printed circuit board［J］. Engineering Plastics Application，2011，39（02）：91⁃95.
5	许文娇. 废弃环氧树脂再生技术及应用研究［D］. 上海：东华大学，2011.
6	徐敏. 废弃印刷线路板的资源化回收技术研究［D］. 上海：同济大学，2008.
7	叶晓东，黄伟，贾凤，等. 聚酰胺6合成、改性技术及应用研究进展［J］. 现代化工，2022，42（10）：71⁃75.
	YE X D， HUANG W， JIA F. Research progress on synthesis，modification technology and application of polyamide 6［J］. Modern Chemical Industry，2022，42（10）：71⁃75.
8	张超. POE⁃g⁃MAH对PA66性能的影响［J］. 上海塑料，2022，50（02）：26⁃30.
	ZHANG C. Effect of POE⁃g⁃MAH on the properties of PA66［J］. Shanghai Plastics，2022，50（02）：26⁃30.
9	Sun S L， Chen Z， Sun L L，et al. Influence of epoxy resin on the properties of maleic anhydride functionalized acrylonitrile–butadiene–styrene copolymer toughened polyamide 6 blends［J］. Journal of Applied Polymer Science，2011，121（2）：10⁃15.
10	Heflin D G， Mansson J A E. Mechanisms for combining polyamide and epoxy and their effects on mechanical performance⁃A review ［J］. Polymers and Polymer Composites，2022，30（05）：1⁃19.
11	陈健. 熔融共混制备PA66/环氧树脂复合材料及其性能研究［D］. 太原：中北大学，2014.
12	袁永星，毕书华，路学春. 一种用于PA 6/PPO合金材料的马来酸酐接枝PA6 相容剂的制备方法：中国，CN111285976A［P］. 2020⁃06⁃16.
13	靳奇峰，冯培勇，刘跃军. 超支化环氧树脂改性PA6的制备与性能研究［J］. 包装学报，2020，12（05）：52⁃58.
	JIN Q F， FENG P Y， LIU Y J. Preparation and characterization of polyamide 6 with hyperbranched epoxy modifier［J］. Packaging Journal，2020，12（05）：52⁃58.
14	苏似鑫，马航飞，吴启升，等. 不同形态玻璃纤维对尼龙66结构与性能影响［J］. 工程塑料应用，2021，49（11）：119⁃125.
	SU S X， MA H F， WU Q S，et al. Structure and properties of polyamide 66 rffected by different glass fibers［J］. Engineering Plastics Application，2021，49（11）：119⁃125.
15	张九夫，罗开强，徐军，等. 长玻璃纤维增强PA66复合材料的综合性能及其影响因素研究［J］. 中国塑料，2022，36（03）：1⁃8.
	ZHANG J F， LUO K Q， XU J，et al. Study on comprehensive properties and influencing factors of long glass fiber reinforced PA66 composites［J］. China Plastics，2022，36（03）：1⁃8.
16	曾莉，杨云峰. PA6共混改性环氧树脂复合材料的性能研究［J］. 绝缘材料，2013，46（01）：27⁃29.
	ZENG L， YANG Y F. Properties study of polyamide 6 blend modified epoxy resin composite［J］. Insulating Materials，2013，46（01）：27⁃29.
17	李丽萍. 无卤阻燃GF/PA66的界面相容性与性能研究［D］. 黑龙江：东北林业大学，2007.

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