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A kind of preparation method of wood-plastic composite material containing modified titanium dioxide nanotubes

A wood-plastic composite material, titanium dioxide technology, applied in the field of wood-plastic materials, can solve the problems of limited application, PVC wood-plastic composite materials are easy to ignite, etc.

Active Publication Date: 2022-07-29
安徽霖园外新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When wood-plastic composite materials are used in building doors and windows, interior decoration, furniture and other fields, there are high requirements for fire resistance. Although PVC has good flame retardancy, the addition of a large amount of wood powder and low-molecular additives makes PVC wood Plastic composites are easy to ignite, and the flammability of wood-plastic composites limits its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of a wood-plastic composite material containing modified titanium dioxide nanotubes, comprising the following steps:

[0021] S1, under the protection of nitrogen, add cerium chloride and hexa-p-carboxyphenoxy cyclotriphosphazene to ethanol and stir to obtain a mixed solution, heat the mixed solution to reflux and react for 14h, cool to room temperature, filter, wash, drying to obtain material A;

[0022] S2. Add material A into water and stir to obtain a mixture, immerse the titanium dioxide nanotubes in the mixture, and introduce nitrogen to the bottom, microwave for 12s at a temperature of 90°C, stand to cool to room temperature, and then pressurize to 35MPa, After maintaining the pressure for 10min, the pressure was reduced to normal pressure, centrifuged and dried to obtain modified titanium dioxide nanotubes;

[0023] S3. Add the wood powder and the coupling agent into the high-speed mixer and mix to obtain the modified wood powder; mix the p...

Embodiment 2

[0025] A preparation method of a wood-plastic composite material containing modified titanium dioxide nanotubes, comprising the following steps:

[0026] S1. Under the protection of nitrogen, add cerium chloride and hexa-p-carboxyphenoxy cyclotriphosphazene in a molar ratio of 1:2 to ethanol and stir to obtain a mixed solution. The mixed solution is heated to reflux and reacted for 22h. , cooled to room temperature, filtered, washed and dried to obtain material A;

[0027] S2, add material A into water and stir to obtain a mixture, wherein the mass-volume ratio of material A and water is 12:100 g / mL, immerse the titanium dioxide nanotubes in the mixture, and feed nitrogen to the bottom for 13 min, at 85° C. Microwave heating at the temperature for 20s, stand to cool to room temperature, then pressurize to 30MPa, hold the pressure for 15min and then reduce to normal pressure, centrifuge and dry to obtain modified titanium dioxide nanotubes;

[0028] S3, adding the wood powder ...

Embodiment 3

[0030] A preparation method of a wood-plastic composite material containing modified titanium dioxide nanotubes, comprising the following steps:

[0031] S1. Under the protection of nitrogen, add cerium chloride and hexa-p-carboxyphenoxy cyclotriphosphazene in a molar ratio of 1:5 to ethanol and stir to obtain a mixed solution. The mixed solution is heated to reflux and reacted for 14h. , cooled to room temperature, filtered, washed and dried to obtain material A;

[0032] S2, add material A into water and stir to obtain a mixture, wherein the mass-volume ratio of material A and water is 7:100 g / mL; immerse the titanium dioxide nanotubes in the mixture, and feed nitrogen to the bottom for 10 min, wherein, in the mixture The weight ratio of material A and titanium dioxide nanotubes is 8:3, microwave heating for 12s at a temperature of 87°C, stand to cool to room temperature, then pressurize to 32MPa, hold the pressure for 10min and then reduce to normal pressure, centrifuge and...

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Abstract

The invention discloses a preparation method of a wood-plastic composite material containing modified titanium dioxide nanotubes. After heating to reflux, react for 14-22h, cool to room temperature, filter, wash, and dry to obtain material A; add material A to water and stir to obtain a mixture, immerse the titanium dioxide nanotubes in the mixture, and feed nitrogen to the bottom, at 85 Microwave heating for 12-20 s at a temperature of ‑90 ℃, stand to cool to room temperature, pressurize to 30‑35 MPa and maintain pressure for 10‑15 min, then reduce to normal pressure, centrifuge and dry to obtain modified titanium dioxide nanotubes; The modified wood powder is obtained by mixing the joint agent; polyvinyl chloride, modified wood powder, nano-silicon dioxide, nano-calcium carbonate, modified titanium dioxide nanotubes, zinc borate, stabilizer and lubricant are added and mixed, and added into twin-screw extrusion. Extrusion molding machine.

Description

technical field [0001] The invention relates to the technical field of wood-plastic materials, in particular to a preparation method of a wood-plastic composite material containing modified titanium dioxide nanotubes. Background technique [0002] Wood-plastic composite materials are a kind of wood fiber materials in the form of fibers, powders, etc. as filling or reinforcing materials, thermoplastics as matrix materials, and various processing methods such as extrusion, hot pressing, molding or injection molding are added with various additives. A new type of composite material made of composite materials, which organically combines the advantages of two different materials, wood and thermoplastic, and reflects the ease of processing of wood and the characteristics of the diversity and flexibility of thermoplastic processing methods. The field is very broad. Polyvinyl chloride has the advantages of flame retardant, high chemical resistance, good mechanical strength and ele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L97/02C08K9/04C08K9/02C08K7/24C08K3/26C08K3/36C08K3/38
CPCC08L27/06C08L2201/02C08L2205/16C08L2205/035C08L2205/03C08K2201/011C08K2003/265C08K2003/387C08L97/02C08K9/04C08K9/02C08K7/24C08K3/26C08K3/36C08K3/38
Inventor 安文超张雷杨继文马洁黄永察
Owner 安徽霖园外新材料有限公司
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