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硅膠原料如何識別？
硅膠原料的五種識別辦法?
Five identification methods for silica gel material?
在硅橡膠制品的生產(chǎn)過程中，有時候需要識別硅橡膠原料，那么常用識別硅橡膠的方法有哪些呢?下面泰華硅膠制品廠分享一下最常用的5種方法。
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.測重量，取出樣品，用電子稱或分析天平，精確到0.01克的即可，辨別氟膠是最容易的因為氟膠重量最大，1.8以上，CR ECO的也多在1.3以上比重明顯偏大的可以考慮是這些膠。
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.
2.燃燒法，首先要取出少量產(chǎn)品，經(jīng)過燃燒。氟膠一般燃燒起來效果是一般的，而CR，CSM是沒有火支撐一下就熄滅了，NR、EPDM燃燒起來火焰比較大。另外，還可以仔細(xì)觀察，燃燒狀態(tài)、顏色、氣味。如NBR/PVC并用膠，有火源時火劈啪的亂濺，離開火后自熄，煙濃且有酸味。
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.熱空氣老化，取出樣品，放在老化箱里老化一天，觀察老化后的現(xiàn)象。分級老化逐步升溫。150度下CR，NR，SBR會脆斷，NBR EPDM還有彈性。升到180度下普通NBR就會脆斷;而230度下HNBR也會脆斷，氟膠和硅膠仍然有很好的彈性。
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.耐介質(zhì)增重，可以從成品上取樣，浸泡在選定的一種或幾種介質(zhì)中，一定溫度時間后取稱重，根據(jù)重量變化率硬度變化率推斷材料的種類。在100度機(jī)油中浸泡24小時，NBR，氟膠，ECO，CR質(zhì)量及硬度變化率很小，而NR，EPDM，SBR增重一倍以上且硬度變化很大，體積膨脹很明顯。
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.低溫法，取出樣品，放入一個合適的低溫環(huán)境。把樣品泡在低溫環(huán)境下2-5分鐘，在選定溫度下感覺軟硬程度。比如-40度下，同樣耐高溫耐油很好的硅膠和氟膠對比，硅膠則比較軟。
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.
總結(jié)：
Summary:
通過5中方法可以分辨出硅橡膠原料，但是實際的操作情況還是當(dāng)時的情況進(jìn)行判斷如硅膠制品廠里面現(xiàn)有的配置以及條件，選用合適的方法，這樣能夠快速的分辨出來，可以節(jié)省時間以及成本，使得硅橡膠制品的生產(chǎn)效率能夠得到保障。
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.
