PVC (Polyvinyl Chloride) microcrystalline wood composite material and preparation method thereof

A composite material and microcrystalline technology, which is applied in the field of PVC microcrystalline wood composite materials and its preparation, can solve the problems of low biomass powder addition, narrow processing temperature range, and weak corrosion resistance, etc., and achieve system stability and processing The effect of changing the process range and good lubricity

Inactive Publication Date: 2017-02-08
HUNAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and solve the problems of high cost, poor toughness, narrow processing temperature range, low addition of biomass powder, and poor corrosion resistance of PVC wood-plastic foam products produced by the prior art. To solve the problems of high energy consumption and high production energy consumption, a PVC microcrystalline wood composite material with low cost, good toughness, good corrosion resistance and low energy consumption and its preparation method are provided

Method used

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  • PVC (Polyvinyl Chloride) microcrystalline wood composite material and preparation method thereof
  • PVC (Polyvinyl Chloride) microcrystalline wood composite material and preparation method thereof
  • PVC (Polyvinyl Chloride) microcrystalline wood composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] In parts by weight, the PVC microcrystalline wood composite material formulation of the present embodiment consists of the following table:

[0035] Table 1 Embodiment 1 raw material proportioning

[0036]

[0037] The biomass powder is crop straw powder passed through a 60-mesh sieve.

[0038] The sulfate is anhydrous magnesium sulfate passing through a 400 mesh sieve.

[0039] The foaming agent is a mixture of azodicarbonamide (AC) and sodium bicarbonate (NC) with a mass ratio of 1:2.

[0040] Utilize above-mentioned formula to produce the preparation method of PVC microcrystalline wood composite material as follows:

[0041] Step 1, put the components in Table 1 into the high-speed mixer, mix at a high speed, and the temperature reaches 130°C, then transfer the mixture from the high-speed mixer to a low-speed cold mixing pot, and lower the temperature to 40-50°C to obtain a mixture ;

[0042] Step 2, mixing and extruding the mixture in an 80 / 156 different-to-c...

Embodiment 2

[0051] In parts by weight, the PVC microcrystalline wood composite material formulation of the present embodiment consists of the following table:

[0052] Table 3 Embodiment 2 raw material proportioning

[0053]

[0054] The biomass powder is wood powder passed through a 60-mesh sieve.

[0055] The sulphate is anhydrous calcium sulphate passing through a 400 mesh sieve.

[0056] The foaming agent is a mixture of azodicarbonamide (AC) and sodium bicarbonate (NC) with a mass ratio of 1:3.

[0057] Utilize above-mentioned formula to produce the preparation method of PVC microcrystalline wood composite material as follows:

[0058] Step 1, put the components in Table 1 into the high-speed mixer, mix at a high speed, and the temperature reaches 130°C, then transfer the evenly mixed mixture from the high-speed mixer to a low-speed cold mixing pot, and lower the temperature to 40-50°C, get the mixture;

[0059] Step 2, kneading and extruding the mixture in a counter-rotating ...

Embodiment 3

[0068] In parts by weight, the PVC microcrystalline wood composite material formulation of the present embodiment consists of the following table:

[0069] Table 5 Embodiment 3 raw material proportioning

[0070]

[0071] Described biomass powder is the bamboo powder that passes 60 mesh sieves.

[0072] The sulphate is anhydrous calcium sulphate passing through a 400 mesh sieve.

[0073] The foaming agent is a mixture of azodicarbonamide (AC) and sodium bicarbonate (NC) with a mass ratio of 1:0.5.

[0074] Utilize above-mentioned formula to produce the preparation method of PVC microcrystalline wood composite material as follows:

[0075] Step 1, put the components in Table 1 into the high-speed mixer, mix at a high speed, and the temperature reaches 135°C, then transfer the mixture from the high-speed mixer to a low-speed cold mixing pot, and lower the temperature to 40-50°C to obtain a mixture ;

[0076] Step 2, kneading and extruding the mixture in a counter-rotating...

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Abstract

The invention relates to a PVC (Polyvinyl Chloride) microcrystalline wood composite material and a preparation method thereof. The PVC microcrystalline wood composite material provided by the invention is mainly prepared from the following raw materials: 100 parts of PVC, 10 to 80 parts of pulverized biomass, 10 to 140 parts of sulfate, 2 to 6 parts of stabilizer, 0.4 to 1.5 parts of foaming agent, 4 to 10 parts of foaming control agent, 3 to 8 parts of flexibilizer, 0.3 to 2.0 parts of lubricating agent, and 0.3 to 1.8 parts of coupling agent. The invention also comprises a preparation method of the PVC microcrystalline wood composite material. The toughness and the rigidity of the PVC microcrystalline wood composite material prepared by the method are superior to those of an existing PVC microcellular foaming wood plastic material, especially the shrinking percentage of the material is remarkably reduced, the vicat softening point temperature is remarkably improved, and the PVC microcrystalline wood composite material can be widely applied in building materials such as indoor and outdoor floors, wallboards, top plates and home furnishing.

Description

technical field [0001] The invention relates to the application of new materials and the technical field of wood-plastic composite materials, in particular to a PVC microcrystalline wood composite material and a preparation method thereof. Background technique [0002] PVC wood-plastic material is a green and environmentally friendly material. It can be processed into flooring, wall panels, door panels, profiles and other household or outdoor products through extrusion molds, injection molds, and calendering molds. It does not contain benzene substances, and the formaldehyde content is less than 0.2mg / cm 3 . Products made of PVC wood-plastic materials are moisture-proof and waterproof, which can solve the problems that solid wood boards and MDF boards are easy to rot, swell and deform after absorbing water and moisture in humid and watery environments, and can be applied to environments where traditional wood products cannot be used; Insect-proof and termite-proof, effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L33/04C08L51/04C08L23/28C08K3/30C08K5/10C08J9/10C08J9/08
CPCC08J9/08C08J9/103C08J2203/02C08J2203/04C08J2203/18C08J2327/06C08J2497/02C08L27/06C08L2203/14C08L2205/035C08L97/02C08L33/04C08L51/04C08L23/286C08K2003/3063C08K2003/3045C08K5/10
Inventor 苏胜培彭梅醒杨治骆仁锋罗琼林曹理朝段锦华
Owner HUNAN NORMAL UNIVERSITY
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