Why the Liquid Silicone Rubber for soap just can be reproduced for a few times?
It can be due to the following reasons: a. Adding too much silicone oil in to silicon rubber. Silicon oil is an additive which destroy the molecular weight of silicone rubber and reduce the tension and tear strength b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs and the silicon rubber with a low hardness to makes molds for large sized products with simple designs. (Notes: we should choose the suitable silicon rubber according to the requirements of our products to avoid this problem.)
The Applications of Addition Cure Silicone Rubber
Application of Addition Cure Silicone Rubber Addition Cure Silicone Rubber is also a kind of Food Grade Silicone Rubber, which are good for making molds for chocolate tray, jelly tray, sugar tray, candy molds, cake molds, ice cream, ice sculpture, butter, fondant, bread, baking and other food decorations. It’s also good for diamond, jewelry and resin rhinestones molding. And this kind of silicone is also good for prototype design /rapid prototyping. Datasheet of Addition Cure Silicone Rubber Model Color Viscosity (cps) Hardness (A°) Tensile Strength (Mpa) Tear Strength(kN/m) Elongation (≥%) Mixing ratio Operating Time(min) Curing Time(H) HY-E620 Translucent 5000+1000/-2000 20±2 7.5 31 ≥400 1:1/10:1 30~60 4~5 HY-E625 Translucent 6000+1500/-2000 25±2 8 […]
What is RTV silicone?
Excerpt From Wikipedia Introduction RTV Silicone (room temperature vulcanization silicone) is a type of silicone rubber made from a two-component system (base plus curative; A+B) available in a hardness range of very soft to medium – usually from 15 Shore A to 40 Shore. RTV silicones can be cured with a catalyst consisting of either platinum or […]
Operations of silicone rubber
Step One: Preparation of the Original molds Firstly, you should deal carefully with the Original mold or the products you want to be molded. If no polishing of the Original mold or the products you want to be molded, the surface of it is not so smooth or perfect, then the products madeout of silicone molds […]
Operation Instructions of Mold Making Silicone Rubber
Do you know the peration instructions of mold making silicon rubber? Step 1: prepare the original molds Make sure your original molds good, fix it on a board. And fix the original mold on a board, then used four piece of board to enclose the original molds. Step 2: Take 100 G parts A and add 3G parts B and mix them evenly. Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts.Part A is a kind of flowing white liquid and part B is the curing agent or catalyst. Pls follow the step strictly: 1.Weigh the two part exactly by electronic weight.. If not,for example add two much catalyst,the operation time will be too fast to operate,which will cause inconvenience to operate . 2.Mix part A and part B evenly. Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation.What’s more,the finished molds will meet a short life.All of these will cause a waste of silicon rubber. Step 3: Vacuum pumping Without exception,this step takes less than 10 minutes.Otherwise,it will cause cross linking reaction and no more further steps will be available. Step 4: Pouring casting or Brush operation Notes: 1.For simple pattern products we suggest use pouring operation way , which will be very easy to operate and demould. Pourable silicone require light viscosity which will be easy to flow smoothly and easy to de-air. 2.For delicate pattern products we suggest use brushing operation way , which can copy the pattern exactly. Brushable silicone require high viscosity which won’t be easy to flow away and easy to brush . 3.We suggest to set the silicone mold for another 12 hours after demould before put into large production .
FAQ of Mold Making Silicone Rubber
FAQ of Mold Making Silicone Rubber 1. Why will the silicone mold be reused only for a few times? It can be due to the following reasons: a. Adding too much silicone oil into silicone rubber. Silicone oil is an additive which can destroy the molecular weight of silicone rubber and reduce the tension and tear strength. b. Using the silicon rubber with a high hardness to make molds for small sized products with delicate and intricate designs or the silicon rubber with a low hardness to makes molds for large sized products with simple designs. (Notes: we should choose the suitable silicon rubber according to the requirements of our products to avoid this problem.) 2. Why does the silicone mold get burnt out? This consequence happens only because you have left out the important notes when using unsatured resin materials to produce your products. The unsaturated resin products great heat when added the curing agent. So you demould […]