Silicone rubber for cement products mold making

Not many people know that the silicone rubber could be used as a material for cement products mold making, because many people think that the silicone rubber mold is too soft and could be used for molding for small-sized products, like resin crafts. In fact, silicone rubber has a good tear strength and is not easy to get deformed, as long as you add a outer shell with resin or plaster, the silicone rubber mold can duplicate cement products for many times. In the following, I am going to say something about silicone rubber for cement products mold making, and hope it may be somewhat useful for you.       Firstly I will talk about condensation type silicone rubber. This kind of silicone contains two parts, one part is base liquid silicone, the other part is the curing agent(tin catalyst). Every time before we need to use the silicone, we must mix up these two parts at the mixing ratio of 2% to 3% if the operation temperature is around the room temperature(25 degree centigrade). It can preliminarily cure with 3-4 hours at room temperature, but you had better put it into production after 24 hours. The shrinkage of this kind of silicone rubber is within 0.3%. This kind of molding silicone is very economical for its lower price.   Secondly let’s know something about addition cure type molding silicone rubber. It also contains two parts, but the mixing ratio is 1:1 or 10:1, and the curing agent is platinum catalyst. This kind of silicone rubber for cement products mold making has lower shrinkage(with 0.1%). When you do the process of cement products mold making, you can elevate the operation temperature to speed up the curing rate. This kind of mold making silicone rubber is completely environmentally friendly and food grade. Moreover, it has a prominent resistance to aging.   Shenzhen Hong Ye Jie technology Co. Ltd supplies high-class silicone rubber for cement products mold making in quantity. To satisfy Customers’needs is the solemn mission that Hongye people are determined to pursue forever. If some information has interested you in some aspects, or you want to get more details, then you could enter our cellphone entrance: http://m.szrl.net or our computer entrance: http://www.szrl.net. (FAX: 89948030 TEL: 086-755-89948019 086-755-89948006 EMAIL: info@szrl.net).