橡塑胶材料是在生活中很普遍的，在橡塑胶材料及制品都有严格的质量要求，如拉伸强度、弹性模量、延伸率、耐老化等。橡胶制品用于精密度高的领域，这些参数往往要求很苛刻。橡塑胶发展初期就成立了橡胶制品委员会，负责对橡胶研发、学术、质量监督等工作。
Rubber and plastic materials are very common in our life. There are strict quality requirements for rubber and plastic materials and products, such as tensile strength, modulus of elasticity, elongation, aging resistance, etc. Rubber products are used in the field of high precision, these parameters are often very demanding. Rubber products committee has been established in the early stage of rubber and plastic development, responsible for rubber research and development, academic, quality supervision and other work.
橡胶材料的耐介质增重实验
Medium resistant weight gain experiment of rubber material
可以从成品上取样，浸泡在选定的一种或几种介质中，一定温度时间后取称重，根据重量变化率硬度变化率推断材料的种类。
The sample can be taken from the finished product, soaked in one or several selected media, weighed after a certain temperature time, and the type of material can be inferred according to the change rate of weight and hardness.
比如在100℃机油中浸泡24小时，NBR，ECO，CR质量及硬度变化率很小，而NR，EPDM，SBR增重一倍以上且硬度变化很大，体积膨胀很明显。
For example, after soaking in 100 ℃ engine oil for 24 hours, NBR, eco, Cr quality and hardness change rate are very small, while NR, EPDM, SBR gain more than double, hardness changes greatly, and volume expansion is very obvious.
橡胶材料的测比重实验
Specific gravity test of rubber material
用电子称或分析天平，精确到0.01克的即可，外加一杯水，一根头发丝即可。当然现代发展，电子橡胶密度计更好检测橡胶的比重值。
Use an electronic scale or analytical balance, accurate to 0.01g, plus a glass of water, a hair can. Of course, with the development of modern technology, electronic rubber densitometer can better detect the specific gravity of rubber.
除了以上实验检测，橡塑胶材料更重要的是还有拉伸强度，延伸率这些实验需要用拉力试验机来进行检测。
In addition to the above experimental detection, rubber and plastic material is more important is the tensile strength, elongation these experiments need to use a tensile testing machine to test.