PVC co-extruded foaming board and preparation method thereof

Abstract

The invention relates to the technical field of plastic processing, in particular to a PVC co-extruded foaming board and a preparation method thereof. The PVC co-extruded foaming board comprises a PVClayer and a PVC foaming layer; the PVC layer is mainly prepared from the following raw materials in parts by weight: PVC resin, plant fiber powder, carbon black, a compound stabilizer, an AC foamingagent, a foaming control agent, zinc stearate, paraffin, calcium carbonate, talcum powder, magnesia and silane coupling agent; and the PVC foaming layer is mainly prepared from the following raw materials in parts by weight: PVC resin, a compound stabilizer, a plasticizer, an AC foaming agent, zinc stearate, stearic acid, paraffin, calcium carbonate, talcum powder, magnesia and a silane coupling agent. The plant fiber powder is added in the raw materials, thus, the PVC foaming board has lightness and toughness of fibers, meanwhile has good weather fastness and high strength, does not absorb water, does not crack, is long in service life, has good apparent quality, and is light in weight and low in price; and the calcium carbonate and the talcum powder are used, and the synergistic effect of filler is played.

Description

technical field [0001] The invention relates to the technical field of plastic processing, in particular to a PVC co-extruded foam board and a preparation method thereof. Background technique [0002] PVC foam board, also known as Chevron board and Andy board, uses polyvinyl chloride (PVC) as the main raw material and adds various additives. At present, the PVC industry is developing rapidly all over the world with broad prospects. All countries are optimistic about the potential of PVC and its benefits to the ecological environment. PVC is proving to the world with its superior and unique performance that its role and status cannot be replaced by any other products at present. Yes, but the current PVC co-extrusion foam board is not tough enough, easy to break, and the foaming process is difficult to control, the performance of the manufactured foam board is difficult to meet people's use requirements. Contents of the invention [0003] In order to solve the above problem...

AI Technical Summary

Problems solved by technology

At present, the PVC industry is developing rapidly all over the world with broad prospects. All countries are optimistic about the potential of PVC and its benefits to the ecological environment. PVC is proving to the world with its superior and unique performance that its role and status cannot be replaced by any other products at present. Yes, but the toughness of PVC co-extruded foamed board is not enough at present, it is easy to break, and the foaming process is difficult to control, and the performance of the manufactured foamed board is difficult to meet people's use requirements