Self-reinforced profiled bar, and production method and application thereof

Abstract

The invention discloses a self-reinforced profiled bar, and a production method and application thereof. The self-reinforced profiled bar comprises, by weight, 100 parts of PVC (polyvinyl chloride) bars and 5-120 parts of reinforcing liner materials arranged in cavities of the PVC bars. Each reinforcing liner material comprises, by weight, 25-65 parts of styrene copolymers, 20-40 parts of reinforcing agents A and 10-25 parts of reinforcing agents B. The production method includes preparing the reinforcing liner materials, performing co-extrusion by a main machine and an auxiliary machine perpendicular to the main machine, and cooling a product after forming to obtain the self-reinforced profiled bar, wherein the main machine is used for extruding the PVC bars, and the auxiliary machine is used for extruding the reinforcing liner materials, and the main machine and the auxiliary machine work simultaneously. The self-reinforced profiled bar has the advantages that the problem that the reinforcing liner materials are separated from the bars during transporting, mounting and using can be avoided, carbonization of the PVC bars due to high-temperature co-extrusion can be avoided, the self-reinforced profiled bar has excellent electricity conducting performance, and the risk that high-rise buildings are struck by lightning in a stormy day can be reduced greatly.

Description

technical field [0001] The invention relates to the technical field of plastic profiles, in particular to a self-reinforced profile and its preparation method and application. Background technique [0002] PVC profiles are widely used in building doors and windows, wood-plastic floors, furniture panels, etc. However, PVC materials have low rigidity and poor deformation resistance. When used as door and window materials, steel linings are required. Although the traditional metal steel lining can effectively improve the deformation resistance of PVC profiles, the steel lining has the disadvantages of high production energy consumption, poor corrosion resistance, thermal insulation, poor sound insulation, high material density, and low weld angle strength. Moreover, when the profile is installed, the process is complicated, and installers are required to fix the steel lining and the plastic steel profile at the construction site, which increases the assembly process for door an...

AI Technical Summary

Problems solved by technology

However, in these solutions, there are the following deficiencies: (1) High-temperature co-extrusion of the base material PVC and the reinforcing bar PBT is likely to cause decomposition, foaming and carbonization of the PVC base material, resulting in discoloration of the profile and strong odor; (2) The reinforcing bar The interface bonding force between PBT and the base material PVC is poor. In the process of profile transportation, installation and use, due to collision and bending, it is easy to cause the base material PVC and the reinforcing bar PBT to peel off, which will greatly reduce the reinforcing effect of the reinforcing bar. limit its application

[0004] In addition, with the acceleration of the urbanization process, there are more and more high-rise buildings, and the requirements for lightning protection of building materials are getting higher and higher, and the commonly used self-reinforced co-extruded profiles are insulating materials, which is not conducive to lightning weather The transmission of electric charge, which is vulnerable to lightning strikes during thunderstorms, causing unavoidable damage

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