Silicone moulding rubber for concrete

Hongye Manufacture high-quality silicone moulding rubbers. They have favorable mix ratios, cure at room temperature and offer fine detailed reproduction.     For High Tear Silicone Condensation cure series: 1. High tear strength 2. Well suited to extensive undercuts 3. Good durability 4. Excellent release   For Addition Cure Moulding Rubbers: 1. High tear 2. low shrinkage 3. Ideal for reproducing masters 4. heat accelerated RTV-2 silicone rubbers use two different kinds of silicone for concrete to form an elastomer: condensation cure systems which adopt a tin based catalyst and addition cure systems which adopt platinum based catalyst. Though the end products are similar they do have some key differences which should always be considered.   The Differences Between Addition Cure And Condensation Cure: Addition Cure Systems For Concrete Moulding: 1. Low shrinkage, below 0.1% 2. Marginally higher tensile strength 3. Need for careful and accurate mixing 4. Good abrasion resistance 5. Able to accelerated by using heat.   Condensation Cure Systems For Concrete Moulding 1. Lower costs 2. Broader product range Where the application demands good dimensional stability, such as precision moulding, then addition cure would be a better choice, the shrinkage levels for a addition cure are very low(0.1%). The reproduction and release properties of both materials are excellent.   The platinum catalyst used in all addition cure silicone is susceptible to attack from certain chemicals which in turn will lead to inhibition of cure process and results in a partially cured. Bringing the uncured material into contact with the following substances should be avoided during the manufacturing: nitrogen, sulphur, phosphorus, arsenic, Organotin catalysts, PVC stabilizers, epoxy resin catalysts, sulphur vulcanised rubbers and condensation cure silicone materials.   Shenzhen Hong Ye Jie technology Co. Ltd supplies high-class silicone moulding rubber for concrete in quantity. Welcome to visit 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).