| At present the production method of PVC paste resin in domestic is mainly the seed emulsion polymerization and micro-suspension polymenzation. P450 paste resin maintains a good momentum of development for its excellent foaming performance in the international market. Due to the continuous development of decoration industry, the demanding of artificial leather, wallpaper and other aspects will increase relatively large, and the market of P450 paste resin as the main raw material will continue maintain a good momentum of development in recent years.The P450 paste resin of Tianjin Botian chemical company is producted from the seed emulsion polymerization method, the company has an output of 80000 tons annual, and it is mainly used for foaming products such as artificial leather, floor leather, decorative wallpaper, sports flooring and auto-interior materials.The application of paste resin abroad is already quite mature, but in domestic market it is still in growth. Botian company has been developing new technology, new equipment on the production of P450 paste resin and transforming the existing production process continuesly. By adjusting ingredients and polymerization process conditions,the company has produced the paste resin of good performance. This paper comprehensively describes the main properties of the processing and application of P450 paste resin, summarized the production, research status and development prospect of domestic and foreign paste resin. In order to meet the production demand of downstream users.This paper has started from the main factors affecting the P450 foaming performance, testes the influence on pore structure, foaming ratio and gel properties from the variation of polymerization degree, viscosity, formulation and molding conditions, finds out the best foaming conditions that suitable for the P450, At the same time, collects the same grade products of P450, analysises the differences in the indexs, foaming properties and gel properties in detail and the main factors may affect the foaming performance. |
