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Polyvinyl chloride (PVC) wood-plastic foaming wood grain section and preparation method thereof

A wood-plastic foaming and wood-grain technology, applied in the field of wood-plastic materials, achieves the effects of low production cost, simple and easy-to-control production process, and advanced technology

Inactive Publication Date: 2012-02-01
北京欧尼克环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PVC wood-plastic foamed wood-grain profiles are rarely seen in the market. This is due to the special requirements of the foamed material on the melt viscosity, which makes it difficult for the material to disperse evenly during the molding process to form a grain-like texture.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method of PVC wood-plastic foamed wood-grain profile comprises the following steps:

[0036] a. Take the following raw materials respectively: 100 parts of general-purpose polyvinyl chloride resin (abbreviated as PVC) by suspension method; 30 parts of wood powder; 10 parts of light calcium carbonate; 1.0 parts of coupling agent; 5 parts of composite stabilizer; composite foam 1.0 parts of agent; 6 parts of foaming aid;

[0037] b. Add 30 parts of wood powder into the high-speed mixer, bake the wood powder at 110-120°C for 8-10 minutes, then add 1.0 parts of coupling agent to activate the wood powder for 5 minutes, and put it into the cold mix Cool to room temperature, drain and mix for later use;

[0038] c. Start high-mixing, put 100 parts of PVC and 5 parts of composite stabilizer into high-mixing through the feeding system, stir at high speed to raise the temperature of the materials to 90°C, and then add 30 parts of activated wood flour and 10 parts o...

Embodiment 2

[0049] A preparation method of PVC wood-plastic foamed wood-grain profile comprises the following steps:

[0050] a. Take the following raw materials respectively: 100 parts of general-purpose polyvinyl chloride resin (abbreviated as PVC) by suspension method; 30 parts of wood flour; 20 parts of light calcium carbonate; 1.25 parts of coupling agent; 6 parts of composite stabilizer; composite foam 1.25 parts of agent; 7 parts of foaming aid;

[0051] b. Add 30 parts of wood powder into the high-speed mixer, bake the wood powder at 110-120°C for 8-10 minutes, then add 1.25 parts of coupling agent to activate the wood powder for 5 minutes, and put it into the cold mix Cool to room temperature, drain and mix for later use;

[0052] c. Start high-mixing, put 100 parts of PVC and 6 parts of composite stabilizer into high-mixing through the feeding system, stir at high speed to raise the temperature of the materials to 90°C, and then add 30 parts of activated wood flour and 20 parts...

Embodiment 3

[0063] A preparation method of PVC wood-plastic foamed wood-grain profile comprises the following steps:

[0064] a. Take the following raw materials respectively: 100 parts of general-purpose polyvinyl chloride resin (abbreviated as PVC) by suspension method; 50 parts of wood powder; 20 parts of light calcium carbonate; 1.5 parts of coupling agent; 7 parts of composite stabilizer; composite foam 1.5 parts of agent; 8 parts of foaming aid;

[0065] b. Add 50 parts of wood powder into the high-speed mixer, bake the wood powder at 110-120°C for 8-10 minutes, then add 1.5 parts of coupling agent to activate the wood powder for 5 minutes, and put it into the cold mix Cool to room temperature, drain and mix for later use;

[0066] c. Start high-mixing, put 100 parts of PVC and 7 parts of composite stabilizer into high-mixing through the feeding system, stir at high speed to raise the temperature of the materials to 90 ° C, and then add 50 parts of activated wood flour and 20 parts...

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Abstract

The invention discloses a polyvinyl chloride (PVC) wood-plastic foaming wood grain section and a preparation method thereof. The wood-plastic foaming wood grain section is prepared from the following raw materials: plastics, an organic filler, an aid, a modifier, a foaming agent, a wood grain masterbatch and the like. The preparation method comprises the following steps of: mixing a foaming mixed material and the wood grain masterbatch and co-extruding from an extruder in a conical twin screw extrusion production line according to a one-step process route; foaming and molding by using a foaming mold; and cooling and shaping by using a shaping mold to obtain the PVC wood-plastic foaming wood grain section. The PVC wood-plastic foaming wood grain section has the advantages of light weight, high specific strength, waterproofness, corrosion resistance and heat preservation, and has the processing characteristic that wood can be nailed, sawed and planed; in addition, the PVC wood-plastic foaming wood grain section has highly simulated solid wood appearance, natural and clear textures, and bright surface color, is an ideal wood-simulated wood-plastic product, and can be widely applied to building, transportation, packaging, home decoration and daily product markets.

Description

technical field [0001] The invention belongs to the technical field of wood-plastic materials, and relates to a PVC wood-plastic foamed wood grain profile and a preparation method thereof. Background technique [0002] The processing of traditional PVC wood grain profiles adopts a two-step molding process, that is, the first step is to extrude and granulate the mixture of different colors using a parallel twin-screw extruder; After mixing according to a certain ratio, a single-screw extruder is used to extrude and form; but the two-step method requires large equipment investment, complicated process, low production efficiency and high production cost. The inventor once submitted a patent application (the application number is 00132561.2) about plastic-wood profiles in November, 2000. Further product research and development and user feedback indicate that wood-plastic foamed products and wood-like wood-plastic products not only reduce costs, but also endow products with mor...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08K3/26C08K3/34C08J9/10C08J9/08
Inventor 韩伟黄振海
Owner 北京欧尼克环保技术有限公司
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