How to make the most durable mold silicone

Silicone mold is a special mold glue for making crafts. The characteristics of silica gel are high temperature resistance, corrosion resistance, strong tear resistance and high simulation. Silicone is the raw material for special molds for various handicrafts. According to the different products, different molds of silica gel raw materials are used to form different silicone molds.

According to the operation mode, if the casting mold (package mold) can use the hardness of 20 degrees or 40 degrees of the mold silicone product raw materials, specifically: 20 degrees hardness mold silicone characteristics: small crafts, small viscosity, good fluidity, Good operation, easy to discharge, good tensile strength and easy perfusion. 40 degree hardness mold silicone characteristics: to make large pieces of products, small viscosity, good fluidity, good operation, easy to discharge, good tensile strength, easy to perfuse.

First, the choice of silica gel raw materials, generally choose high-quality silica gel, meet the following characteristics 1 mold silicone rubber has good operating performance. 2 The fluidity of silica gel is suitable, and the viscosity is moderate and easy to brush. 3 The shrinkage rate of silica gel is as small as possible. 4 silicone pull is good. 5 The silicone mold made is not deformed.

Second, add different amounts of silicone oil or no silicone oil depending on the product.

The silicone oil will destroy the molecular weight of the silica gel, resulting in a reduction in the number of times the mold is turned over;

Third, the production process should avoid improper operation, compare the proportion of silica gel and curing agent improperly etc., improper operation is also easy to break or even scrap the silicone mold.

The operation method of filling or pouring mold: filling or pouring mold is used for relatively smooth or simple products. No mold line saves time and labor, it is the product or model you want to copy, surrounded by rubber or glass. Put the vacuumed silica gel directly onto the product. After the silica gel is dried and formed, the product is taken out and the mold is formed. (Note: The casting mold is generally made of silica gel with relatively soft hardness, so that the mold is relatively easy to demould. Will not damage the product inside the silicone mold).

Improving the service life and accuracy of silicone molds and shortening the manufacturing cycle of molds are technical problems that many enterprises urgently need to solve. However, in the process of using silicone molds, failure forms such as sag, deformation, wear and even breakage often occur. In the process of production already produced, it is necessary to select the characteristics of the silicone material in time, analyze the amount of silicone oil, and, after discovering the problem, carry out the erroneous repair.