CPVC Plastic Industrial grade Pipe Fittings
1.Standards referred to: JIS/K 6676, JIS/K 6777, ASTMD 1785, ISO/DIS 15493 and ISO/DIS 15877,etc;2.CPVC pipelines used In industry: GB/T 18998 series standards;3.Standards for hot water and cold water CPVC pipelines network products: GB/T 18993 series standards.
CPVC(Chlorinated polyvinyl chloride) has become an extremely important plastics materials in the engineering,it has a lot of merits such as relatively low cost,high hard embrittlement temperature(Tg) high thermal bending temperature,abtuse(inactive) chemical properties, excellent mechanical strength, no electric conductivity,safest conductibility and smokiness of combustion.The commercialized production and application of CPVC was initiated by BF Goodrich Corporation in early 1960,CPVC has received very high appraise in various industrial applications for its high-temperature resistance and perfect chemical resistance.In the concept,CPVC is made from PVC Homopolymer through chloridization ,while in the models,PVC and chlorine take actions according to the reaction mechanism of free basic radicals,where can be started up with varied methods like heating and UV power,a common reaction process on the chloridization of free PVC radicals is described as below,where RH refers to PVC.The status and reaction capacity (chlorine) of CPVC have vast difference by the different modes of chloridization.Compared with 63~69% as per general CPVC ,the chlorine content of basic PVC of this CPVC has been upgraded from 56.7% to 74%. Thanking to the increase of the increase of the chlorine content,the hard embrittlement temperature of polymer (Tg) will be greatly boosted, due to the increase of molecule weight of basic PVC ,Tg under same contentwill be also a little upgraded.
CPVC Series Standard Pipe Materials is produced as per GB/T18993.2-2003,Pipe Fittings as per GB/T 18993.3-2003,Vicat Softening Temperature as per GB/T8802-2001,Dart Drop Impact Test as per GB/T14152-2001,the others according to ASTMF441,F439,F437,as well as DIN8079,DIN8080,ISO15493-1.