论文总字数：35523字

摘 要

Abstract Ⅱ

第1章 绪论 1

1.1 研究背景及意义 1

1.2 UPR树脂 1

1.2.1 UPR的发展历程 2

1.2.2 国内外UPR及其复合材料发展现状 3

1.3 常见低密度聚合物材料 7

1.3.1 聚合物发泡制品 7

1.3.2 发泡方法 8

1.3.3 常用发泡剂 8

1.4 珍珠岩 10

1.4.1 珍珠岩的性质 10

1.4.2 珍珠岩的应用 11

1.5 偶联剂 13

1.5.1 硅烷偶联剂的结构及作用机理 13

1.5.2 硅烷偶联剂的选择及处理技术 14

1.5.3 偶联剂在复合材料中的应用 15

第2章 实验部分 17

2.1 实验思路 17

2.2 实验部分 17

2.2.1 实验原料 17

2.2.2 实验仪器 18

2.3 实验方法 18

2.3.1 实验标准 18

2.3.2 实验流程 18

2.3.3 测试分析方法 19

第3章 实验结果与讨论 21

3.1 引言 21

3.2 珍珠岩颗粒筛选 21

3.3 结果分析 22

3.3.1 偶联剂用量对LDUPRP压缩强度的影响 22

3.3.2 不同粒径珍珠岩对LDUPRP性能的影响 26

3.3.2 不同粒径珍珠岩对LDUPRP性能的影响 27

第4章 结论与展望 33

4.1 结论 33

4.2 展望 33

参考文献 35

致 谢 40

珍珠岩在不饱和树脂基低密度复合材料中的应用

摘要

以偶氮二异丁腈/偶氮二异庚腈（AIBN/ABVN）为复合发泡剂兼引发剂，γ-甲基丙烯酰氧基三甲氧基硅烷（KH-570）改性的珍珠岩为填料，制备了低密度不饱和聚酯树脂制品（LDUPRP）。分别以不同粒径珍珠岩，不同浓度KH-570改性珍珠岩为影响因素，设计实验以确定制备LDUPRP最佳掺量以及最佳改性浓度。在成型温度为80 ℃，AIBN/ABVN用量为树脂质量的2%，制备不同浓度KH-570改性的不同粒径不同掺量的珍珠岩填充LDUPRP。

实验结果表明KH-570能有效地改善树脂与珍珠岩之间的界面结合性能，当KH-570的用量为珍珠岩质量的2.0%时，对树脂与珍珠岩的界面改性效果最佳。

通过研究不同粒径的珍珠岩填充LDUPRP，当粒径为270 μm~325 μm的珍珠岩掺量为树脂质量的30%时，制得的LDUPRP的表观密度最小，为0.30±0.01 g/cm³，LDUPRP的表观密度随着珍珠岩粒径的增大而增大；当珍珠岩的粒径为325 μm~380 μm、掺量为树脂质量的40%时，材料的压缩强度达到最大为14.95±0.34 MPa；若综合表观密度与压缩强度，从比压缩强度性能考察，则珍珠岩的最佳粒径和最佳掺量分别为325 μm~380 μm和30%，此时材料的比压缩强度为45.17±1.03 MPa/（g·cm^-3）。

关键词： 低密度不饱和聚酯 珍珠岩 KH-570 发泡剂 轻质

Application of Perlite in Low Density Unsaturated Polyester Resin Composite Material

Abstract

The low density unsaturated polyester resin product (LDUPRP) was prepared with azobisisobutyronitrile and azobisisoheptonitrile (AIBN/ABVN) used as foaming agent as well as an initiator in the existence of perlite modified by allyl methyl gamma-acyloxy three methoxy silane (KH-570) as filler. In order to obtain the optimum perlite contents and the modification of the best concentrations for preparing LDUPRP, the experiment was designed with two factors, which were different size of perlite and different concentrations of KH-570 modification of perlite. LDUPR was prepared with different size of perlite and different concentrations of KH-570 modification of perlite as the 2% complex AIBN and ABVN by the mass of UPR at a temperature of 80℃.

The results show that, the KH-570 could effectively improve the interface joint performance between resin and perlite. The experience access the best interface modification of resin and perlite with the 2% KH-570 rates for the quality of perlite.

By studying the different particle size of perlite, LDUPRP made apparent density of the smallest being 0.30±0.01 g/cm³ as the 30% perlite by the mass of UPR and the particle size of perlite being 270 μm~325 μm. Apparent density of LDUPRP increased with the pearlite particle size increase. Compressive strength of the material reached the maximum at 14.95±0.34 MPa, when the 40% perlite by the mass of UPR and the particle size of perlite being 325 μm~380 μm. By the performance of the apparent density, the compressive strength and the specific compressive strength, the best particle size and the mass of UPR of perlite was 325 μm~380 μm and 30%. Now, the specific compressive strength of the materials was 45.17±1.03 MPa/(g·cm^-3).

Key words: LDUPR; Perlite;KH-570; Foaming; Light

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