PVC threading pipe and preparation method thereof

Abstract

The invention belongs to the technical field of high molecular materials and particularly relates to a PVC threading pipe and a preparation method thereof. The PVC threading pipe is prepared from thefollowing raw materials: PVC resin, activated light calcium carbonate, a heat stabilizer, pigments, an impact-resistant modifier, a lubricating agent and a flame retardant. The threading pipe preparedby the preparation method provided by the invention has the advantages of high flame retardance and strong compression resistance and has the characteristics of high bending performance, low temperature impact resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a PVC threading pipe and a preparation method thereof. Background technique [0002] With the rapid development of urbanization in our country, a large number of farmers have moved from rural areas to cities and towns, which has led to the rapid development of China's tertiary industry. Construction of many public gathering places such as hotels, restaurants, shopping malls, large supermarkets, libraries, and singing and dancing entertainment venues. The power supply lines in these public gathering places have two types: open laying and concealed laying. The open laying lines are mainly laid on the ceiling and in the floor. , but there are many flammable and combustible materials in the ceiling and floor, so it is necessary to use threading pipes to protect the internal lines, otherwise, a short circuit will cause a fire due to aging lines and other reasons,...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of urbanization in our country, a large number of farmers have moved from rural areas to cities and towns, which has led to the rapid development of China's tertiary industry. Construction of many public gathering places such as hotels, restaurants, shopping malls, large supermarkets, libraries, and singing and dancing entertainment venues. The power supply lines in these public gathering places have two types: open laying and concealed laying. The open laying lines are mainly laid on the ceiling and in the floor. , but there are many flammable and combustible materials in the ceiling and floor, so it is necessary to use threading pipes to protect the internal lines, otherwise, a short circuit will cause a fire due to aging lines and other reasons, which will cause serious damage to people's lives and property safety. Significant loss, the oxygen index OI of ordinary PVC threading pipe (the index that characterizes the flame retardant performance, the larger the index value, the better the flame retardant performance) the maximum value is 32, which cannot protect the internal lines well in the event of a fire Therefore, it is necessary to improve and modify its flame retardant performance; the hidden laying line is mainly embedded in the prefabricated board and the wall, and the maximum compressive strength of the ordinary PVC threading pipe is 1250N, and the threading pipe is embedded in the prefabricated board When it is in the wall, because the compressive strength of the wire tube is not enough, it is easy to crush the wire tube. When the line is laid in the later stage, the wire cannot pass through the threading tube, which brings great trouble to the later line laying. Even because a certain circuit It is necessary to change the circuit design scheme if it cannot pass through, so the pressure resistance of the wire tube must be modified to improve

Images