Low temperature tup impact property of plastic profile shapes and dimension change rate of main profile shapes after heating are two typical technical indexes among 15 testing indexes stipulated in standard GB/T 8814-2004 "Non-plasticized PVC-U for door/window".

The application of infrared spectrograph to the production of PVC profiles;

Two problems concerning the plastification quality of PVC profiles;

The article has described toughening mechanism of nanometer CaCO3, Application of nanometer CaCO3 in PVC profiles and compared with conventional particle CaCO3 in PVC profiles.

s: Based on the plastics property, the important functions of lubricants in PVC profile formul￣ation, and how to choose the proper lubricant formulation system were described.

The extrusion technology of PVC profiles was discussed from the aspects of the temperature controlling range, the formulation system, the compounding technology, the equipment performance, the technological system, etc.

On the basis of practical experience in production,this paper described the characteristics of production and use of PVC profile shapes in frigid district in several aspects,including formula system,manufacturing process,use,etc.

This paper analyzed the section structure of PVC profile shapes and tested the different results of different section structure of PVC by using falling ball impact test at low temperature (-10℃) and discussed how to reasonably design the section structure of profile shapes.

Design of extrusion die for plastic profiled bar based on 3D viscoelasticity penalty function finite element analysis;

Computer-aided design of sprue in extrusion die head for plastic profiled bar inner rib;

Design of flowing stability in sprue channel of extrusion die head for plastic profiled bar based on finite element method;