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A kind of preparation method of pvc bamboo-plastic composite material

A composite material, bamboo-plastic technology, applied in the field of preparation of new PVC bamboo-plastic composite materials, can solve problems such as deformation, poor flame retardancy, and performance decline

Inactive Publication Date: 2017-02-08
江西欧居工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the flammability of bamboo fiber itself, the flame retardancy of bamboo-plastic composite materials is not good, and it is easy to deform or cause performance degradation in high temperature environments.

Method used

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  • A kind of preparation method of pvc bamboo-plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of novel PVC bamboo-plastic composite material, its step is as follows:

[0027] (1) Add aniline and formaldehyde together into a three-port reaction kettle for stirring in a water bath, add bisphenol A after 50 minutes and start heating, heat to 110°C after 1 hour, and remove the reflux device after 1.5 hours of heat preservation and reflux reaction, dehydration under reduced pressure, The vacuum degree during the decompression dehydration is -0.1MPa, and the reaction is stopped when the material system no longer produces bubbles, and the benzoxazine resin is obtained after the discharge is cooled to room temperature for subsequent use, wherein the molar ratio of aniline, formaldehyde, and bisphenol A is 1:2:1;

[0028] (2) Add the boric acid ester coupling agent into absolute ethanol, after completely dissolving, add magnesium borate whiskers and stir at 60°C for 20 minutes, add azobisisobutyronitrile under nitrogen protection and continue...

Embodiment 2

[0032] A kind of preparation method of novel PVC bamboo-plastic composite material, its step is as follows:

[0033] (1) Add aniline and formaldehyde together into a three-port reaction kettle for stirring in a water bath, add bisphenol A after 50 minutes and start heating, heat to 110°C after 1 hour, and remove the reflux device after 1.5 hours of heat preservation and reflux reaction, dehydration under reduced pressure, The vacuum degree during the decompression dehydration is -0.1MPa, and the reaction is stopped when the material system no longer produces bubbles, and the benzoxazine resin is obtained after the discharge is cooled to room temperature for subsequent use, wherein the molar ratio of aniline, formaldehyde, and bisphenol A is 1:2:1;

[0034] (2) Add the boric acid ester coupling agent into absolute ethanol, after completely dissolving, add magnesium borate whiskers and stir at 60°C for 20 minutes, add azobisisobutyronitrile under nitrogen protection and continue...

Embodiment 3

[0038] A kind of preparation method of novel PVC bamboo-plastic composite material, its step is as follows:

[0039] (1) Add aniline and formaldehyde together into a three-port reaction kettle for stirring in a water bath, add bisphenol A after 50 minutes and start heating, heat to 110°C after 1 hour, and remove the reflux device after 1.5 hours of heat preservation and reflux reaction, dehydration under reduced pressure, The vacuum degree during the decompression dehydration is -0.1MPa, and the reaction is stopped when the material system no longer produces bubbles, and the benzoxazine resin is obtained after the discharge is cooled to room temperature for subsequent use, wherein the molar ratio of aniline, formaldehyde, and bisphenol A is 1:2:1;

[0040](2) Add the boric acid ester coupling agent into absolute ethanol, after completely dissolving, add magnesium borate whiskers and stir at 60°C for 20 minutes, add azobisisobutyronitrile under nitrogen protection and continue ...

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Abstract

The invention provides a preparation method of a novel PVC-bamboo-plastic composite material. The preparation method comprises the following steps: (1) mixing aniline and formaldehyde together in water bath, adding phenol and heating, performing a reflux reaction at heat-preservation condition, dehydrating under reduced pressure, and discharging and cooling to obtain a benzoxazine resin; (2) adding a borate coupling agent to absolute ethyl alcohol, adding magnesium borate whisker and stirring, adding azodiisobutyronitrile under the protection of nitrogen and continuing stirring, discharging, filtering by suction, washing, drying, and extracting to obtain modified magnesium borate whisker; (3) drying bamboo powder, taking the bamboo powder out and adding the ethanol solution of a titante coupling agent, stirring, taking out, washing, drying and then grinding, thereby obtaining modified bamboo powder; and (4) adding PVC, trimethyl phosphate, a plasticizer, a stabilizer, an antioxidant, the benzoxazine resin, the modified magnesium borate whisker and the modified bamboo powder to a stirrer and stirring, shifting to a mixer for mixing, shifting to a hot press for hot pressing, thereby obtaining the PVC-bamboo-plastic composite material.

Description

[0001] Technical field: [0002] The invention relates to building materials, in particular to a preparation method of a novel PVC bamboo-plastic composite material. [0003] Background technique: [0004] Bamboo-plastic composite material is a modified composite material filled with bamboo powder or bamboo fiber to reinforce thermoplastic resin. From the structure, it can be regarded as a two-phase structure formed by thermoplastic resin as the continuous phase and bamboo powder / bamboo fiber as the dispersed phase. The combination of phases through chemical means such as grafting or coupling makes bamboo-plastic composites have the advantages of both wood and resin, and is widely used in packaging, transportation, landscape, construction and other fields. my country's bamboo resources are very rich and the price is relatively low, so bamboo-plastic composite materials have good economic value; bamboo powder / bamboo fiber is an environmentally friendly natural material, so it ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L97/02C08L79/04C08K13/06C08K9/10C08K9/04C08K7/08C08K5/521C08K5/12C08K5/134C08G73/06
CPCC08G73/0688C08L27/06C08L2201/02C08L2201/08C08L2205/03C08L97/02C08L79/04C08K13/06C08K9/10C08K7/08C08K5/521C08K5/12C08K5/1345
Inventor 肖健
Owner 江西欧居工程有限公司
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