Development of PVC stabilizer

 PVC water pipe product features a high-impact , high toughness and impact resistance compared with the same specifications of the ordinary PVC-U pipes, impact resistance increased significantly, to more effectively resist point loads and uneven ground subsidence . 2, anti- water hammer can effectively improve the ability to resist water hammer , to prevent WSD aluminium stearate  damage to the pipeline in the operation process . 3 , resistance to environmental cracking performance improvement , installation and effective against external shocks during transportation of the pipe. 4 , strong chemical resistance tubing with a strong chemical resistance and can be used with any applicable to ordinary PVC-U pipes occasions. 5 , the cost is lower than the PE pipe, and because the pipe wall thickness than the thin PVC-U , PVC-U and considerable cost , superior performance , has promotional value , there is instead of PVC-U, the development trend of PE pipe .
Because of high impact PVC water pipe system, the viscosity is large, high stability and workability requirements , most  WSD Metallic stearate manufacturers use imported organic tin stabilizers and calcium zinc stabilizers. Initial coloring and stability of organotin stabilizers better, but since most manufacturers also produce leaded pipes and tubes , mixing systems and broken material difficult to handle , and the ingredients, the smell is relatively large , limiting the use of organic tin ; the cost of imported calcium and zinc is relatively high, for the comprehensive promotion of high impact PVC water pipe disadvantage. Therefore, strengthening the development of high impact PVC water pipe into the domestic calcium zinc stabilizers calcium zinc stabilizers domestic industry important topics and tasks.
   Second, the real one , identify the major raw materials and formulations
 A, PVC resin using the K value 66-68 PVC powder , PVC-U pipes and resin used in the same B, titanium dioxide and color pigments adjusted according to the requirements of pipe , titanium dioxide rutile titanium dioxide to use in order to improve weatherability pipe sex . C, the modifier is optional rigid inorganic ultrafine inorganic rigid material , special WSD stearic acid  surface active agent, a dispersing agent processing , so that the inorganic material can be uniformly coated on the surface of the PVC molecules , when the external force , the inorganic particles and between the resin matrix to produce crazing , can absorb impact energy , and thus the choice of rigid inorganic modifiers to reduce costs , while improving the pipe rigidity and toughness , so as to achieve " just tough balance" ; but when inorganic modifier added to after a certain amount of impact resistance PVC water pipe and high impact resistant hydraulic performance will decline , D, calcium and zinc composite stabilizer is calcium stearate, zinc stearate as the main metal soaps , combined polyol , Β- diketones, phosphite antioxidants and other auxiliary stabilizer and lubricant made ​​of a class of complex optimization of non-toxic environmentally friendly stabilizer, has good early color and long-term thermal stability ; PVC material can be appropriately increased toughness ; efficient with internal lubricant and external lubricant esters , etc., while the adsorption of the stabilizer itself , the production process can reduce the precipitation of the growth cycle E, the impact modifier is a compound for the supply of high-impact PVC tube designed to improve the impact modifier preferably has a PVC material , which is made ​​of a rubber elastic body is a synergistic effect , predetermined elastomers, elastomers and non- promoting agents predetermined composition . Impact modifier different toughening mechanism is different, and the compatibility of PVC resin are different , so by promoting agent may be different between the elastomer fine particles isolated from each other , preventing agglomeration , to promote the dispersion of PVC matrix and compatibility uniformly dispersed in the resin matrix , promoting toughening effect.