无苯乙烯交联剂制备不饱和聚酯交联条件的优化
1. 环境催化及清洁技术研究创新中心, 石家庄学院化工学院, 石家庄市绿色装饰板材技术创新中心, 河北石家庄 050035
2. 津东电缆有限公司, 河北邢台 054000
| 摘 要： | 本文开展了以邻苯二甲酸二烯丙酯为交联剂制备无苯乙烯不饱和聚酯的研究，并对这种交联剂进行交联固化反应制备不饱和聚酯的交联反应条件进行了研究。本文研究了过氧化苯甲酰（BPO）和过氧化苯甲酸叔丁酯（TBPB）两种引发体系下引发剂的用量、固化的温度和固化的时间等因素对不饱和聚酯性能的影响。通过研究发现，两种引发体系下，适当增 加引发剂的用量、提升固化温度和延长固化时间的，都有利于提升不饱和聚酯的拉伸强度、弯曲强度与热变形温度，但不饱和聚酯的韧性也因此变差，抗冲击性能下降。当引发剂用量、固化温度及固化时间超过一定数值后这些性能的变化趋势变缓。BPO引发体系比TBPB引发体系所需的引发温度略低。 |
| 关 键 词： | 不饱和聚酯; 无苯乙烯; 引发剂; 固化温度; 固化时间 |
| DOI： | 10.57237/j.mater.2025.01.002 |
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收稿日期: 2025-01-04
接受日期: 2025-04-09
在线出版日期: 2025-05-30
Optimization of Crosslinking Conditions for Unsaturated Polyester Preparation Using Styrene Free Crosslinking Agent
1. School of Chemical Engineering, Shijiazhuang University, Shijiazhuang Green Decorative Board Technology Innovation Center, Environmental Catalysis and Clean Technology Research and Innovation Center, Shijiazhuang 050035, China
2. Jindong Cable Limited Liability Company, Xingtai 054000, China
| Abstract: | The study on the preparation of a styrene-free unsaturated polyester using diallyl phthalate as a cross-linking agent, and the cross-linking reaction conditions for the preparation of unsaturated polyester through cross-linking and curing reaction of this cross-linking agent were studied. In this paper, the effects of the amount of initiator, curing temperature and curing time on the properties of unsaturated polyesters under two initiator systems, benzoyl peroxide (BPO) and tert-butyl peroxybenzoate (TBPB), were studied. Through research, it is found that under the two initiator systems, appropriately increasing the amount of initiator, increasing the curing temperature and prolonging the curing time are all beneficial to improve the tensile strength, flexural strength and thermal deformation temperature of unsaturated polyester, but unsaturated polyester The toughness of the ester is also deteriorated and the impact resistance is reduced. When the amount of initiator, curing temperature and curing time exceed a certain value, the change trend of these properties becomes slower. The initiation temperature required for the BPO initiated system is slightly lower than that of the TBPB initiated system. This study focuses on the preparation of a styrene-free unsaturated polyester using diallyl phthalate (DAP) as a cross-linking agent and systematically investigates the cross-linking reaction conditions. The effects of initiator type (benzoyl peroxide, BPO, and tert-butyl peroxybenzoate, TBPB), initiator content (1%–5%), curing temperature (100–140°C), and curing time (2–6 h) on the mechanical and thermal properties of the unsaturated polyester were evaluated. Experimental results indicate that increasing initiator content, curing temperature, and curing time within optimal ranges significantly enhances tensile strength, flexural strength, and heat deflection temperature (HDT). |
| Keywords: | Unsaturated Polyester; Styrene Free; Initiator; Curing Temperature; Curing Time |
基金
| 1. | 2024年大学生创新创业训练计划项目 (S202410102073) |
参考文献
| [1] | 丘管先, 李挺, 张小萍, 杜江华. TBPB/BPO对不饱和聚酯树脂固化行为及BMC力学性能的影响 [J]. 塑料工业, 2020, 48(09): 117-120. |
| [2] | 李建新, 黄港, 高中琦, 等. 超声在线监测不饱和聚酯树脂固化过程及其动力学行为 [J]. 天津工业大学, 2024, 43(05): 51-58. |
| [3] | 范智杰. 耐高温不饱和聚酯树脂制备及其固化方法探讨 [J]. 化工中间体, 2015, 11(04): 92-93. |
| [4] | 李志豪. 无苯乙烯的室温固化不饱和聚酯树脂的组成、固化工艺与性能研究 [D]. 华南理工大学, 2020. |
| [5] | 邹萌,何兆益,唐亮,等.不饱和聚酯树脂固化磷石膏强度形成机制及微观特性研究 [J]. 应用化工, 2024, 53(09): 2109-2113. |
| [6] | 张斌. 新型无苯乙烯不饱和聚酯的合成及其涂料 [D]. 华南理工大学, 2015. |
| [7] | 黄新辉, 陆昶. 低苯乙烯挥发不饱和聚酯树脂的制备及性能 [J]. 工程塑料应用, 2023, 51(05): 45-50. |
| [8] | 胡双林. 高效阻燃不饱和聚酯树脂复合材料的制备与研究 [D]. 重庆交通大学, 2024. |
| [9] | 刘擎国. 环境友好的不饱和聚酯树脂的组成、固化工艺与性能研究 [D]. 华南理工大学, 2018. |
| [10] | 刘华, 吕晓平, 茆凌峰, 刘世强, 刘坐镇. 不饱和聚酯树脂低苯乙烯挥发助剂的研究与应用 [J]. 热固性树脂, 2016, 31(06): 37-45. |
| [11] | 袁学会, 刘方方, 冯倩男. 不饱和聚酯树脂室温固化体系研究进展 [J]. 山东化工, 2014, 43(05): 49-51. |
| [12] | 田井速, 袁正华, 罗恒, 等. 再生石材用不饱和聚酯树脂固化特性研究 [J]. 科技资讯, 2024, 22(07): 89-92+97. |
| [13] | 刘方方, 袁学会. 不饱和聚酯树脂BPO/DMA/MHPT固化体系的研究 [J]. 粘接, 2016, 37(02): 40-42. |
| [14] | 谢加强, 陈进, 褚绥红, 等. 耐水不饱和聚酯树脂的改性研究 [J]. 化工新型材料, 2024, 52(10): 126-130+138. |
| [15] | 钟范. 不饱和聚酯树脂在复合材料中的应用和发展 [J]. 现代盐化工, 2024, 51(06): 4-5+71. |
