rubber Fillers, rubber products contain fillers

rubber Fillers

Most rubber products contain fillers which belong to two groups: reinforcing and inert fillers. Generally speaking reinforcing fillers improve various physical properties of rubber compounds such as tensile strength, tear and abrasion resistance. Inert fillers impart certain processing properties, and reduce.
By far the most important filler is carbon black, whose introduction revolutionized the industry. It is used all rubber articles which have to meet severe service condition except light color products.
The carbon black used in rubber compounding are prepared by three different processes, each yielding a special class of carbon blacks. They are the channel process, the furnace process and thermal process.
From the practical angle, carbon blacks are classified as reinforcing and semi-reinforcing. Their qualities are indicated by initials, such as EPC(easy processing channel), SRF(semi-reinforcing furnace),HMF(high medulus furnace), etc. The variety used most extensively today is HAF (high abrasion furnace).
Inert fillers consists of fillers which can be incorporated in rubber compounds without substantially reducing their mechanical properties. Consequently, they make possible a lower manufacturing cost of rubber goods which need not be of very high quality. Many substances belong to the class of inert fillers such as whiting, barium sulfate, lithopone, etc.
New Words and Expressions
1.filler 填充剂
2.Contain 包含
3.reinforce 加强，补强
4.inert 惰性的，无活动性的
5.tear 撕裂
6.impart 赋予，给予
7.by far 最……，非常……
8.carbon 碳
9.introduction 引言，序言，介绍
10.revolutionize 使发生革命
11.severe 严重的，严酷的，苛刻的
12.prepare 制备，准备
13.channel 槽，海峡
14.furnace 炉子
15.thermal 热的
16.angle 角
17.indicate 指示
18.initial 字头，开头的
19.modulus 模量，定伸强度
20.substantially 物质地，实质地，显著地， 大体上
21.consequently 因而，所以，因此
22.whiting 碳酸钙，白垩
23.barium 钡
24.sulface 硫酸盐
25.lithopnone 立德粉（硫酸钡70～72%与氧化锌28～
30%的混合物