论文总字数：26392字

摘 要

Abstract Ⅱ

第一章 综述 1

1.1 研究背景 1

1.2 不饱和聚酯树脂低收缩的研究进展 2

1.3 团状模塑料（BMC）的研究进展 3

1.4 低收缩剂（LSA）的研究进展 4

1.5 新型小分子低收缩剂 5

第二章 实验部分 7

2.1 实验原理 7

2.2 原料与设备 7

2.3 实验内容 9

2.3.1 试样制备 9

2.3.2 弯曲强度测试 9

2.3.3 体积收缩率测定 11

2.3.4 差示扫描量热法（DSC） 11

2.3.5 傅立叶转换红外光谱（FTIR） 11

2.3.6 扫描电子显微镜（SEM） 12

第三章 实验结果与讨论 13

3.1 引言 13

3.2 丁二酸/癸二酸添加量对UPR制品弯曲强度的影响 13

3.3 丁二酸/癸二酸添加量对UPR制品体积收缩率的影响 16

3.4 差示扫描量热法（DSC）图谱分析 22

3.7 BMC制品的性能讨论 25

第4章 结论与展望 27

4.1 结论 27

4.2 展望 28

参考文献 29

致 谢 32

丁二酸/癸二酸复合用于BMC的研究

摘要

本实验中应用丁二酸/癸二酸复合二元酸作为低收缩剂、CaCO₃作为填料、短切玻璃纤维作为增强材料，制备了低收缩BMC样品。本实验从树脂：丁二酸：癸二酸的配比量着手，调节丁二酸/癸二酸的掺量，分析二者添加量对制品固化过程与结果的影响，确定一个最佳配比。设定实验条件为：复合二元酸总掺量20g；CaCO₃添加量为150g；玻璃纤维添加量为15g；前酯化反应温度为25±2℃，时间为3h；固化温度为80℃，时间为12h；制备出丁二酸和癸二酸添加量不同的几组试样。主要研究二元酸掺量的多少对制品弯曲强度、体积收缩率、表观形貌以及固化过程的影响。

其中，当丁二酸添加量为20g，癸二酸添加量为0g的时候，试样的弯曲强度最大，为63.30MPa；其次为丁二酸：癸二酸为15:5，弯曲强度为54.47MPa。其后，当丁二酸添加量越低，癸二酸添加量越高，试样的弯曲强度也变得越来越低，最低时仅有28.93MPa。

而试样的最低体积收缩率出现在丁二酸掺量为15g，癸二酸掺量为5g的组别中，收缩率为6.21%。当丁二酸的添加量增加时，体积收缩率亦稍有上升（丁二酸掺量为20g时的收缩率为6.77%）。而当癸二酸的添加量增加时，试样的体积收缩率会急速上升，当癸二酸掺量为20g时，收缩率甚至高达8.20%。

综合考虑得出结论为：当原料配比为树脂：丁二酸：癸二酸=100:15:5的情况下，制得的试样性能最为理想，既能降低树脂固化时的收缩率，也能够保持较高的弯曲强度。根据此配比制备出BMC试样，其弯曲强度为83.35±8.31MPa，体积收缩率为0.68±0.00%，性能都比单纯的UPR树脂制品有所提高。

关键词： BMC 丁二酸 癸二酸 低收缩

Research of Succinic Acid and Sebacic Acid Composite Used in BMC

Abstract

We used succinic acid and sebacic acid as low-shrinkage additive, CaCO₃ as beaumontage and short-cuted glass fiber as reinforced material to prepare BMC specimens. By changing the volume of addition of succinic acid and sebacic acid, to research how succinic acid and sebacic acid affect the process and result of UPR resin curing, and then decided an optimal additive amount of succinic acid and sebacic acid. The condition for experiments was setted as followed: The addition of succinic acid and sebacic acid was added up to 20g, the addition of CaCO₃ was 150g and short-cutted glass fiber was 15g, the temperature for pre-esterification was setted at 25±2℃, pre-esterification time was setted up by 3h; and the temperature and time for polymerization was setted up at 80℃ and 12h respectively. After producing several groups of specimens with different content of succinic acid and sebacic acid, we did some experiments to research how do the content of succinic acid and sebacic acid effect the bending strength, volume shrinkage, surface topography and the solidification process.

Among all of the experiments, the largest bending strength appeared at whose addition of succinic acid and sebacic acid were 20g and 0g respectively. The maximum was 63.30MPa. Specimens with an 15g succinic acid and 5g sebacic acid had a second largest bending strength which was 54.47MPa. Then the bending strength would decrease accompanied with the increase of sebacic acid. The minimum was just 28.93MPa.

And the lowest volume shrinkage was 6.21% which appeared at specimens added 15g succinic acid and 5g sebacic acid. When the addition of succinic acid increased, volume shrinkage of specimen would also increase smoothly (when the addition of succinic acid was 20g, the volume shrinkage was 6.77%) while that would increase rapidly with the increase of sebacic acid. Volume shrinkage reached 8.20% while the content of sebacic acid was 20g.

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