天然橡胶耐热性能研究进展

毕业设计（论文）

天然橡胶耐热性能研究进展Heat resistance of natural rubber research

班级：材料工程系高分子应用105 学生姓名：李振学号： 10020509 指导教师：张琳职称：教师

导师单位：徐州工业职业技术学院材料工程系

论文提交日期：二零一一年十一月二十二日

摘要

本次课题研究的主要内容是围天然橡胶耐热性能研究进展展开的。

自橡胶工业开始以来，天然橡胶一直是一种应用最广泛的原料。尽管今天已有大量的合成橡胶问世，但天然橡胶仍是一种任何合成橡胶不能取代的，具有综合的独特性能的材料，这些性能包括高撕裂强度，耐切割，耐磨和高弹性等。虽然天然橡胶有许多优点，但也有缺陷而限制其使用，它们是低的耐热性和不耐许多的润滑剂。同时，当这些材料失效时，常通过硫化复原而失效，可使应用它的场合产生污染和出现必须处理的问题。由于上述原因，配料人员要想得到能耐热耐油的弹性体，不得不失去一些必要的弹性和撕裂性能，而现有的合成橡胶要获得天然橡胶这些必要的性能，就要花大成本甚至不能实现。

研究表明，采用亚硝基苯酚和双异氰酸酯作用制备的产物作为一种新型硫化剂，它被命名为“Novor”结果表明，随着Novor用量的减少，天然橡胶的耐热性增加，不足的是，Novor 用量的增加，撕裂性能、拉伸性能等变差，同时也降低了硫化速度，增加了生产成本。

关键词：天然橡胶耐热性能硫化剂Novor

Summary

The main content of the research around the heat resistance of natural rubber research started.

Since the beginning of the rubber industry, is a natural rubber has been the most widely used raw materials. Although today there are a lot of the advent of synthetic rubber, natural rubber, but still a no no substitute for synthetic rubber, with the unique properties of composite materials, these properties include high tear strength, resistance to cutting, abrasion, and high flexibility. Although there are many advantages of natural rubber, but there are defects limit its use, they are low heat resistance and intolerance of many of the lubricant. Meanwhile, when the failure of these materials, often by curing the failure recovery, can apply it where pollution and there have to deal with. For these reasons, people want to get to the ingredients heat oil resistant elastomer, have to lose the necessary flexibility and tear resistance, and the existing natural rubber, synthetic rubber to obtain these necessary performance, it would take a large cost can not be achieved even . Studies have shown that the use of nitroso-phenol, and isocyanate dual role of the product prepared by a new type of curing agent as it was named "Novor" The results show that, with Novor reduce the amount of natural rubber increased heat resistance, less than the , Novor increased use, tear resistance, tensile properties and other deterioration, but also reduces the cure rate, increased production costs.

Keywords:Natural Rubber Heat resistance Curing agent vul Novor

目录

第一章概述 (1)

1.1课题研究背景 (1)

1.2课题研究意义及目的 (1)

第二章原材料准备及试验设备 (2)

2.1原材料的准备与称量 (2)

2.1.1 天然橡胶的基本特性及来源 (2)

2.1.2其它原材料的简介 (2)

2.2试验设备及仪器 (3)

第三章试验部分 (4)

3.1橡胶配方基础 (4)

3.1.1试验用基础配方 (5)

3.2试验过程与工艺要求 (5)

3.2.1试验工艺流程图 (5)

3.2.2塑炼 (6)

3.2.3混炼 (6)

3.2.4硫化 (6)

3.2.5试样的准备 (6)

3.3试验方法及要求 (7)

3.3.1 门尼粘度试验 (7)

3.3.2硫化特性测定 (7)

3.3.3冲击弹性 (7)

3.3.4硬度 (8)

3.3.5密度 (8)

3.3.6阿克隆磨耗 (8)

3.3.7拉伸性能 (9)

3.3.8撕裂性能 (9)

3.3.9热氧老化性能 (9)

3.4橡胶物理机械性能测试 (9)

第四章数据分析与讨论 (10)

4.1数据分析 (10)

4.2 讨论 (11)

参考文献 (12)

致谢 (12)