Polypropylene is the plastic with the fastest growth in output in more than ten years. In 1998, the world's polypropylene output accounted for 16% of the total plastic output, becoming the second plastic variety in output. The modification and application development of polypropylene are also very active fields in recent years. Polypropylene has excellent mechanical properties. Among the newly increased applications in Europe, 20% are in the existing application fields, and 65% are mainly used to replace other plastics. Relatively speaking, the price is also relatively cheap. In China, many polypropylene are used to replace engineering plastics, and the modified polypropylene can also be used to meet the performance requirements of plastic special-shaped materials for windows.

   What are the advantages of using PP as a special-shaped raw material for windows?

   First, PP plastic has high cost performance. The rapid growth of output can improve the market competitiveness, so as to bring more competitive advantages to relevant enterprises.

   Second, PP material is a non-toxic and harmless plastic. It is easy to recycle. Even if the environmental protection regulations are more stringent in the future, they will not be subject to too many restrictions.

   Third, PP material has higher heat resistance than UPVC material.

   Fourth, PP material is a crystalline plastic, which is easier to control the process than PVC plastic, which is closely related to the good stability of PP material.