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Environment-friendly nano antibacterial wood plastic composite and preparation method thereof

An antibacterial wood and nano technology, applied in the field of wood-plastic materials, can solve the problems of decreased mechanical properties, poor compatibility, easy breeding of bacteria, etc., and achieve the effect of improving antibacterial and antifungal properties.

Inactive Publication Date: 2016-03-02
泉州斯达纳米科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since wood chips have no static surface treatment, wood chips contain a large number of hydroxyl functional groups, showing strong chemical polarity, resulting in poor compatibility with non-polar substrates such as polypropylene, poor dimensional stability, and resulting in mechanical properties of materials. Secondly, traditional wood-plastic materials are easy to breed bacteria and become the source of infectious diseases. Therefore, how to improve the compatibility and antibacterial and anti-mildew properties of wood components in wood-plastic injection molding materials has become a research topic for wood-plastic injection molding materials. one of the keys

Method used

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  • Environment-friendly nano antibacterial wood plastic composite and preparation method thereof
  • Environment-friendly nano antibacterial wood plastic composite and preparation method thereof
  • Environment-friendly nano antibacterial wood plastic composite and preparation method thereof

Examples

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preparation example Construction

[0043] A preparation method of an environment-friendly nano antibacterial wood-plastic material, comprising the following steps:

[0044] (1), putting the nano-silver-zinc composite material, surfactant and water weighed according to the above-mentioned formula ratio into a grinder, and grinding for 8 hours to obtain a uniformly dispersed nano-silver-zinc composite aqueous solution;

[0045] (2) Pretreatment: Pour the above-mentioned nano-silver-zinc composite aqueous solution and coupling agent into wood chips, stir evenly, and dry at a constant temperature of 60°C to obtain modified wood chips;

[0046] (3), compatibilization treatment: pour the above-mentioned modified sawdust and the toughening agent into the internal mixer together to granulate, and obtain the toughened modified material of sawdust;

[0047] (4) Extrusion: After mixing the above-mentioned wood chip toughening modified material and polypropylene (PP) evenly, extrude with twin-screws, and the extrusion temp...

Embodiment 1

[0058](1) Components and dosage of nano-silver-zinc composite materials

[0059]

[0060] (2) Components and dosage of environmentally friendly nano-antibacterial wood-plastic materials

[0061]

[0062]

[0063] The prepared environment-friendly nano antibacterial wood-plastic material has undergone relevant tests on mechanical properties and antibacterial and antifungal properties, and the test results of various indicators are shown in Table 1.

[0064] Table 1 Test results of environmentally friendly nano-antibacterial wood-plastic materials

[0065]

[0066] The test results show that the prepared environmentally friendly nano-antibacterial wood-plastic material has good mechanical properties, antibacterial and anti-mildew properties, is not easy to be eaten by insects, and has a long service life.

Embodiment 2

[0068] (1) Components and dosage of nano-silver-zinc composite materials

[0069]

[0070] (2) Components and dosage of environmentally friendly nano-antibacterial wood-plastic materials

[0071]

[0072] The prepared environment-friendly nano antibacterial wood-plastic material has undergone related tests on mechanical properties and antibacterial and antifungal properties, and the test results of various indicators are shown in Table 2.

[0073] Table 2 Test results of environmentally friendly nano-antibacterial wood-plastic materials

[0074]

[0075] The test results show that the prepared environmentally friendly nano-antibacterial wood-plastic material has good mechanical properties, antibacterial and anti-mildew properties, is not easy to be eaten by insects, and has a long service life.

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Abstract

The invention discloses an environment-friendly nano wood plastic composite, which includes the following components by weight: 1-5 parts of nano silver zinc composite, 0.01-0.05 part of a surfactant, 20-40 parts of sawdust, 4-8 parts of a coupling agent, 20-40 parts of a toughening agent and 50-80 parts of polypropylene (PP). The environment-friendly nano antibacterial wood plastic composite employs nano silver and zinc composite material to modify sawdust, in order to improve the antibacterial and antifungal properties of the wood plastic composite; and a suitable coupling agent is used for pretreating the hydroxyl and amino groups on the sawdust surface to improve the compatibility of sawdust with a non-polar matrix such as polypropylene, thereby greatly improving the mechanical properties of tensile strength, flexural strength and impact strength of the wood plastic composite. Therefore, the environment-friendly nano antibacterial wood plastic composite is green and environment-friendly, and has the advantages of good mechanical, antifungal and mildew-proof properties, no worm damage and long service life.

Description

technical field [0001] The invention relates to the field of wood-plastic materials, in particular to an environment-friendly nano antibacterial wood-plastic material and a preparation method thereof. Background technique [0002] In recent years, the world's forest resources are becoming increasingly depleted, social environmental protection awareness is increasing, and the use and waste of wood products has been concerned and restricted at home and abroad. Under this background, a kind of natural wood and synthetic plastics Wood-plastic injection molding materials came into being. [0003] In foreign countries, wood-plastic injection molding materials can be better compounded with plastics by treating the surface of wood chips, and the prepared wood-plastic materials have high mechanical properties, such as hardness, strength and sound-absorbing properties. It has been widely used in the construction industry, automobile industry, daily necessities and other industries, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L97/02C08L23/08C08K13/02C08K3/08C08K3/32C08K5/42C08K5/5425
CPCC08L23/12C08K2201/011C08K2201/014C08L2205/03C08L2205/035C08L2205/06C08L2205/16C08L97/02C08K13/02C08K2003/0893C08K2003/0806C08K3/32C08K5/5425C08L23/0815C08K5/42
Inventor 李贝林胜利梁建华
Owner 泉州斯达纳米科技发展有限公司
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