Chengdu DDB Solid Construction Co. specializes in Araldite, Sichuan, glue stick steel, carbon fiber

Why are not allowed to draw the Prophet of Islam?
Chengdu DDB Solid Construction Co. specializes in Araldite, Sichuan, glue stick steel, carbon fiber cloth and other products http://www.cdhmg.com Araldite epoxy concept, the concept of Sichuan ccl4 Araldite epoxy resin (a) The concept of the epoxy resin: epoxy resin is a generic term polymer chain structure of the polymer compound containing two or more epoxy groups, belonging to a thermosetting resin, the resin is a bisphenol A-type representation ccl4 ring epoxy resin. (B) the characteristics of the epoxy resin (bisphenol A type epoxy resins generally refer to) a very low epoxy value of 1. The separate, it needs to be used in conjunction with a curing ccl4 agent have practical value. 2. High bond strength: in the synthesis of epoxy adhesive bonding strength in the forefront. 3. The curing shrinkage ccl4 rate is small, the smallest in the adhesive epoxy shrinkage, which is epoxy glued one reason for the high adhesive curing. For example: phenolic resin adhesive: 8-10%; Silicone ccl4 resin: 6-8% polyester resin adhesive: 4-8%; epoxy: 1-3% if processed through ccl4 a modified epoxy glue Shrinkage can be reduced to 0.1-0.3%, the thermal ccl4 expansion coefficient of 6.0 10-5 / 4. Good chemical resistance work: ether groups in the curing system, the benzene ring and hydroxy fatty acid less susceptible to erosion. In seawater, oil, kerosene, 10% H2SO4,10% HCl, 10% HAc, 10% NH3,10% H3PO4 and 30% Na2CO3 can be used for two years; and in 50% H2SO4 and 10% HNO3 at room temperature soak six months; 10 % NaOH (100 ) soaked in a month, ccl4 the performance remains unchanged. 5. Excellent electrical insulation: epoxy resin can be greater than the breakdown voltage ccl4 35kv / mm 6. Craft good performance, products dimensional stability, low water absorption and good patience. Advantages of bisphenol A type epoxy resin is good, but it has its drawbacks: operating ccl4 viscosity, this was some inconvenience cured material is brittle at the construction side, small elongation. low peel strength. mechanical shock and thermal shock resistance is poor.
Verification code: Please enter the verification code after clicking listening verification code