Preparation method of bamboo-based polycaprolactone composite sheet material modified by nano-silica and nano-titanium dioxide

A technology of nano-silica and nano-titanium dioxide, which is applied in the direction of coating, etc., can solve the problems of easy aging, insufficient antibacterial and anti-mildew performance, etc., and achieve strong anti-bacterial and anti-mildew performance, good anti-thermal oxygen aging performance, anti-thermal oxygen aging The effect of excellent performance

Inactive Publication Date: 2018-12-07
安徽宏润工艺品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is easy to age, and the antibacterial and antifungal properties are insufficient.

Method used

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  • Preparation method of bamboo-based polycaprolactone composite sheet material modified by nano-silica and nano-titanium dioxide

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Experimental program
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Effect test

Embodiment 1

[0027] A preparation method for modifying bamboo base-polycaprolactone composite sheet with nano silicon dioxide-nano titanium dioxide, comprising the steps of:

[0028] (1) Modification method of silica:

[0029] Dry 4 parts of nano-silica at 200-205 °C for 2 hours, mix and disperse with 0.02 parts of silane coupling agent and 140 parts of toluene solution, heat and reflux in a reaction kettle at 105-115 °C for 9 hours, cool, and rotate to evaporate centrifuged, washed 3 times with absolute ethanol, and dried to obtain modified nano-silica;

[0030] (2) Pressing process of bamboo-polycaprolactone composite sheet:

[0031] After mixing 95 parts of polycaprolactone with modified bamboo powder, hydrophobized modified bamboo fiber, the material obtained in (1) and the silica immobilized antioxidant in a twin-roller masticator at 80-85°C for 11 minutes , pressed on a hot press for 10 minutes;

[0032] (3) Antibacterial and mildew-proof modification of bamboo nano-titanium dioxi...

Embodiment 2

[0044] A preparation method for modifying bamboo base-polycaprolactone composite sheet with nano silicon dioxide-nano titanium dioxide, comprising the steps of:

[0045] (1) Modification method of silica:

[0046] Dry 4 parts of nano-silica at 200-205 °C for 2 hours, mix and disperse with 0.02 parts of silane coupling agent and 140 parts of toluene solution, heat and reflux in a reaction kettle at 105-115 °C for 9 hours, cool, and rotate to evaporate centrifuged, washed 5 times with absolute ethanol, and dried to obtain modified nano-silica;

[0047] (2) Pressing process of bamboo-polycaprolactone composite sheet:

[0048] After mixing 105 parts of polycaprolactone with modified bamboo powder, hydrophobized modified bamboo fiber, the material obtained in (1) and the silica immobilized antioxidant in a double-roller masticator at 80-85°C for 11 minutes , pressed on a hot press for 10 minutes;

[0049] (3) Antibacterial and mildew-proof modification of bamboo nano-titanium di...

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Abstract

The invention discloses a preparation method of a bamboo-based polycaprolactone composite sheet material modified by nano-silica and nano-titanium dioxide. The preparation method comprises the following steps: polycaprolactone is mixed with modified bamboo powders, hydrophobically modified bamboo fibers, modified nano-silica and a silica immobilized antioxidant in a double-roll plasticator, and the mixture is subjected to compression molding on a hot press with a set hot pressing temperature and a set hot pressing pressure; and the surface of the bamboo material is subjected to pulling film forming using titanium dioxide sol by a dipping-pulling method, and then an anti-bacterial and mildew-resistant modified bamboo material is obtained after a heat treatment of the pulled bamboo material.Silica is modified in toluene solvent using a silane coupling agent KH570 to enhance hydrophobicity and lipophilicity, and dispersibility of the modified silica in the bamboo material is excellent, so that impact-resistance and aging-resistance of the bamboo material are substantially improved. The surface of the bamboo material is subjected to pulling film forming using titanium dioxide sol by adipping-pulling method, so that nano-titanium dioxide modification of the bamboo material is achieved, and after the high temperature treatment, the titanium dioxide modified bamboo material is strong in anti-bacterial and mildew-resistant properties and low in cost.

Description

technical field [0001] The invention belongs to the technical field of bamboo powder processing, and in particular relates to a preparation method of a bamboo base-polycaprolactone composite sheet modified with nano-silica-nano-titanium dioxide. Background technique [0002] Bamboo is a natural structural composite material. Due to its strong waterproof performance, good elasticity, high strength, small specific gravity, fast growth rate and low price, bamboo is getting more and more attention in the material industry, and my country is a big bamboo-producing country. The bamboo processing industry is also developing very rapidly in my country, and the waste generated in the bamboo processing process has naturally attracted much attention. Therefore, the present invention uses bamboo waste instead of wood to make bamboo-plastic materials, which can make full use of waste biomass resources, avoid environmental pollution caused by burning and discarding, and increase the added ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/06C08L67/04C08L97/02C08K9/06C08K3/36
CPCC08J7/06C08J2367/04C08J2497/02C08K3/36C08K9/06C08K2201/011
Inventor 宋迎楼宋运宁
Owner 安徽宏润工艺品有限公司
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