硅胶原料的五种识别办法?

Five identification methods for silica gel material?

在硅橡胶制品的生产过程中，有时候需要识别硅橡胶原料，那么常用识别硅橡胶的方法有哪些呢?下面泰华硅胶制品厂分享一下最常用的5种方法。

In the production process of silicone rubber products, sometimes the silicone rubber materials need to be identified, so what are the commonly used methods for identifying silicone rubber? Below are the 5 most commonly used methods.

1.测重量，取出样品，用电子称或分析天平，精确到0.01克的即可，辨别氟胶是最容易的因为氟胶重量最大，1.8以上，CR ECO的也多在1.3以上比重明显偏大的可以考虑是这些胶。

1. measure weight, take out the sample, use electronic name or analysis balance, accurate to 0.01 grams, it is the most easy to distinguish fluorine gum because of the maximum weight of fluorine glue, more than 1.8, CR ECO is also more than 1.3 of the larger proportion can be considered.

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2.燃烧法，首先要取出少量产品，经过燃烧。氟胶一般燃烧起来效果是一般的，而CR，CSM是没有火支撑一下就熄灭了，NR、EPDM燃烧起来火焰比较大。另外，还可以仔细观察，燃烧状态、颜色、气味。如NBR/PVC并用胶，有火源时火劈啪的乱溅，离开火后自熄，烟浓且有酸味。

2. combustion method, first of all, to remove a small number of products, after burning. The fluorine glue generally burns up the effect is general, but CR, CSM extinguishes without the fire support, NR, EPDM burns up the flame is bigger. In addition, we can observe the burning state, color and smell carefully. For example, when NBR/PVC is used and glue is used, there will be a splash of fire when there is a fire source.

3.热空气老化，取出样品，放在老化箱里老化一天，观察老化后的现象。分级老化逐步升温。150度下CR，NR，SBR会脆断，NBR EPDM还有弹性。升到180度下普通NBR就会脆断;而230度下HNBR也会脆断，氟胶和硅胶仍然有很好的弹性。

3. hot air aging, remove samples, put them in the aging box for a day, observe the phenomenon after aging. The graded aging is gradually warming up. 150 degrees below CR, NR, SBR will be brittle broken, NBR EPDM also has elasticity. Up to 180 degrees, the ordinary NBR will break off, while the HNBR will break down at 230 degrees. The fluorine rubber and silica gel still have good elasticity.

4.耐介质增重，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。在100度机油中浸泡24小时，NBR，氟胶，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。

4. resistance to medium weight gain, can be sampled from the finished product, soaked in selected one or several medium, after a certain temperature time after weighing, according to the change rate of the weight change rate to deduce the variety of material. For 24 hours in 100 degree oil, the quality and hardness of NBR, fluorine, ECO, CR are very small, while NR, EPDM, SBR are more than doubled and the hardness changes greatly, and the volume expansion is obvious.

5.低温法，取出样品，放入一个合适的低温环境。把样品泡在低温环境下2-5分钟，在选定温度下感觉软硬程度。比如-40度下，同样耐高温耐油很好的硅胶和氟胶对比，硅胶则比较软。

5. low temperature method, remove samples and put them in a suitable low temperature environment. Soak the sample in low temperature for 2-5 minutes and feel the hardness and hardness at the selected temperature. For example, -40 degrees, the same high temperature and oil resistant good silica gel and fluorine gel contrast, silica gel is relatively soft.

总结：

Summary:

通过5中方法可以分辨出硅橡胶原料，但是实际的操作情况还是当时的情况进行判断如硅胶制品厂里面现有的配置以及条件，选用合适的方法，这样能够快速的分辨出来，可以节省时间以及成本，使得硅橡胶制品的生产效率能够得到保障。

The silicone rubber material can be identified by the 5 medium, but the actual operation situation or the conditions at that time can be judged, such as the existing configuration and conditions in the silicone product factory, and the suitable method is selected so that it can be quickly resolved, which can save time and cost, so that the production efficiency of silicone rubber products can be made. It is guaranteed.