Mold Making Silicone Rubber World……

1. Why silicone mold will be fewer turning models ? If the products do little more complex patterns come with a large hardness silicone mold, there will be a fewer turning molded phenomenon, because silicone excellent time will be very brittle and easily broken. Conversely, if you do build a product to do with a small hardness silicone mold, the result will also be unsatisfactory. Because silicone is too soft, it will reduce the tensile and tear strength, made out of the mold will be deformed, turning model number will be reduced. Mold itself good quality, silicone no good or bad, only suitable or unsuitable. We want to use for the product to make the hardness of the size of the silicone mold will not appear in this situation. 2. Why mold silicone mold phenomenon appears to burn ? Because unsaturated resin and resin products plus a peroxide curing agent after the case of the resin reaction will generate a lot of heat, usually resin curing time is 3 minutes, then three minutes after goi

Users sometimes use liquid silicone curing problems encountered, now our summarizes five kinds of the cause of the rtv-2 liquid silicone not curing and their solutions, we hope to help. 1. A curing agent or too little of the curing agent will affect the cured silicone. According to the provisions of the curing agent is added, and should see clear instruction is the proportions of the volume or weight. 2. Different types of curing agents can’t mix, add molding glue exposure to tin ingredients in the condensation silicone will not respond. With the corresponding models of the curing agent. Operating tools are classified, do not mix. If you are operating plus molding silicone, do not come into contact with condensation products. 3. Silicone and curing agent do not stir evenly. Silicone and curing agent operation to fully stir well. 4. Incomplete cure (not dry) in the contact surface occurs only master, the other parts of the intact curing. Marked on the surface of the master mold with a t

  1、Introduce Shoe soles silicone rubber is white liquid two compound condensation silicone rubber.part A is silicone rubber, part B is the catalyst.Ratio:100:2-100:4.with good flowability and tear strength, so the silicone mold won’t be out of shape.it is ideal silicone material to make shoe soles molds. 2、Characteristical ①With low viscosity, good flowability and tear strength, the silicone molds won’t be out of shape. ②With High resistance to high temperature,acid-Bases and aging, so can be used for a long time. ③With low linear shrinkage. ④It is an environmental liquid silicone product, not easy to combustion, also won’t catch fire. 3、Application Suitable for making molding for shoe soles, sand, gypsum and other simple pattern products. 4、Technical data Item no. color Hardness shore A o Viscosity (Mpa.s) Tear strength(KN/m) Tensile strength(Mpa) Elongation break(%) Shrinkage(%) 15 white 15±2 15000±1000 20±2 ≥2.5 400 ≤0.3 25 white 25±2 20000±1000 24±2 ≥3.0 280 ≤0.3 5、how to make mol

The quality of RTV liquid silicone rubber raw materials will affect the quality of silicone molds and their applications. The determinants of the quality of silicone are viscosity, hardness, tear strength and tensile strength. Let me share with you some tips for judging the quality of liquid silicone.  Viscosity: The liquidity of silicone rubber is determined by viscosity. Let liquid silicone rubber vertical natural flow down when testing it. The faster the flow, the better the fluidity of the silicone. Please note, viscosity is proportional to tear strength. Do not use low viscosity silicone to pursue liquidity, which will lead to silicone molds with low tear strength to reduce reproduction. Some factories add much silicone oil to increase liquidity, which also deterioration in tear strength. Hardness: Hardness is one of the important technical indicators that reflect silicone material rigidity. If the hardness of the silicone is below shore A 10, the silicone products have low tear s