聚烯烃/POE/CaCO3 “核 壳”结构的复合材料研究

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聚烯烃/POE/CaCO3 核 壳”结构的复合材料研究
本文主要研究了PP/POE/CaCO3核壳”结构的复合材料制备及增韧机理分析。运用均匀设计与DPS分析方法进行分析，以乙烯-辛烯共聚物(POE)为增韧剂，以CaCO3为增强剂，将传统弹性体增韧方法与无机刚性粒子增韧增强手段相结合，利用双螺杆挤出机，通过熔融共混工艺制备出了聚丙烯（PP）/POE/CaCO3三元复合材料，研究了POE与CaCO3用量对复合材料的力学性能的影响♂果表明：PP/POE/Nano-CaCO3核壳”结构的复合材料缺口冲击强度随着POE用量的增加先减畜增大，随Nano-CaCO3用量的增加先增加后减小，其拉伸强度随POE用量的增加而逐渐减少，随Nano-CaCO3用量的增加先略微增大后减少；PP/POE/μ-CaCO3/Nano-CaCO3的缺口冲击强度随μ-CaCO3的增加先增大后减少，拉伸强度随μ-CaCO3的增加先增大后减少，而Nano-CaCO3对体系的强度影响不明显。对PP/POE/Nano-CaCO3复合体系综合分析的最优配方为 100/15/11，此配方可以使缺口冲击强度达到16.02KJ/m2，无缺口冲击强度达到72.24KJ/m2，拉伸强度达到27.19MPa。
关键词：聚丙烯（PP）；乙烯-辛烯共聚物(POE) ；CaCO3；核壳结构；增韧增强
Abstract
The structure of PP/POE/CaCO3 "core-shell" was studied， and the compound material was prepared， and the plasticizing mechanism was analyzed. Uniform design and DPS were used to analyze.， then take the ethylene - octene copolymer (POE) as the plasticizer， take CaCO3 as the intensifier， unifies the traditional plasticizing method of the elastomer and the inorganic rigid granule plasticizing enhancement method， uses the double screw rod extruding machine， through fused altogether mixes the craft to prepare the polypropylene (PP) the /POE/CaCO3 three Yuan compound materials， has studied POE and the CaCO3 amount used to the compound material mechanics performance influence， finally indicated: PP/POE/Nano-CaCO3 core-shell" the structure compound material gap impact intensity first reduces after the POE amount used increase increases， first increases after the Nano-CaCO3 amount used increase reduces， its longitudinal strength gradually decreases along with the POE amount used increase， first slightly increases after the Nano-CaCO3 amount used increase reduces; The PP/POE/u-CaCO3/Nano-
-CaCO3 gap impact intensity first increases after the u-CaCO3 increase reduces， the longitudinal strength first increases after the u-CaCO3 increase reduces， but Nano-CaCO3 is not obvious to the system intensity influence. Accord to analyze synthetical strength of PP/POE/Nano-
-CaCO3 compound system， we find the best fill prescription is 100/15/11 which makes gap impact intensity achieve 16.02KJ/m2， and makes no gap impact intensity achieve 72.24
KJ/m2，and makes longitudinal strength achieve 27.19MPa.
Key words : Polypropylene；ethylene-octene copolymer；Calcium Carbonate；the structure of core-shell；plasticizing enhancement

目 录
1 绪论 1
1.1 项目背景 1
1.2 研究进展 2
1.2.1刚性粒子增韧PP结构设计 2
1.2.2无机刚性粒子的粒径及其分布对增韧效果的影响 4
1.2.3改性剂种类及用量对增韧效果的影响 6
1.3几种主要机理 7
1.3.1无机刚性粒子增韧增强聚烯烃机理 7
1.3.2 弹性体增韧聚烯烃机理 8
1.3.3常用偶联剂及其作用机理 9
1.3.4 抗氧剂作用机理 11
1.4项目研究的目的和意义 11
2 实验部分 13
2.1实验方案的设计 13
2.1.1聚烯烃的选择 13
2.1.2总体方案的设计思路 13
2.1.3实验的具体方案 14
2.2实验药品 16
2.3实验仪器 18
2.4实验工艺过程 19
2.5性能测试 21
2.5.1缺口和无缺口冲击强度的测试 21
2.5.2 拉伸强度的测试 22
2.5.3 数据处理方法 24
3 结果与讨论 26
3.1缺口冲击强度的讨论 26
3.1.1 PP/POE/Nano-CaCO3与纯PP和PP/POE的8个配方的讨论 26
3.1.2 重新设计后的讨论 28
3.1.3 PP/POE/μ-CaCO3/Nano-CaCO3的缺口冲击强度的讨论 30
3.2 低温无缺口冲击强度的讨论 31
3.2.1 PP/POE/Nano-CaCO3低温无缺口冲击强度 31
3.2.2 PP/POE/μ-CaCO3/Nano-CaCO3低温无缺口冲击强度的讨论 33
3.3 拉伸强度的讨论 34
3.3.1 PP/POE/Nano-CaCO3的拉伸强度的讨论 34
3.3.2 重新设计配方后的拉伸强度的讨论 36
3.3.3 PP/POE/μ-CaCO3/Nano-CaCO3拉伸强度的讨论 38
3.4 PP/POE/Nano-CaCO3强度综合分析 39
3.5 两步法与-步法的对比 40
结 论 41
致 谢 42
参考文献 43
附 表 46