Biomass composite for toothbrush handle and preparation method of biomass composite

A composite material and biomass technology, applied in the field of biodegradable polymer materials, can solve the problem of poor toughness, strength, plasticity and physical and mechanical properties of composite materials, product toughness, plasticity and physical and mechanical properties, and affect the complete degradability of blends and other problems, to achieve excellent mechanical properties, good biodegradability, improve the effect of dispersion and interfacial bonding

Active Publication Date: 2019-05-21
广东巨塑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Chinese patent CN102408690A discloses a thermoplastic starch-modified polylactic acid material, which forms a blend system of starch and polylactic acid through simple direct blending, but the starch and polylactic acid are incompatible, and the interfacial cohesion of the blend system is poor. The physical and mechanical properties such as toughness and plasticity of the product are reduced; Chinese patent CN101831155A discloses a method for preparing a starch/polylactic acid blend. application in food packaging and tableware; and for example, Chinese patent CN101781448A discloses a preparation method of a fully biodegradable reinforced polylactic acid/starch blend, which improves the blend by adding a thermoplastic elastic toughening agent. Mechanical and heat resistance properties, but the thermoplastic elastic toughening agent used is liquid rubber or thermoplastic elastomer, which is a non-biodegradable co

Method used

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  • Biomass composite for toothbrush handle and preparation method of biomass composite
  • Biomass composite for toothbrush handle and preparation method of biomass composite
  • Biomass composite for toothbrush handle and preparation method of biomass composite

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A kind of biomass composite material that is used for toothbrush handle of the present embodiment, preparation method is as follows (the following components are all in parts by weight):

[0040] Step a, prepare modified wood flour:

[0041] a1) Weigh 45 parts of L-lactide and 50 parts of log powder and dry at 60°C for 3.5 hours to control the moisture content to ≤0.02%; weigh 2 parts of stannous octoate and use toluene as a solvent to prepare the mass of stannous octoate Concentration is 2% toluene solution, standby;

[0042] a2) Add L-lactide into the reactor, and gradually raise the temperature to 110°C under stirring. After the L-lactide is completely melted, add the dried log powder and keep the constant temperature to make the L-lactide and log powder Mix well and evenly;

[0043] In the above steps, the log powder is a mixture of teak powder, birch powder and poplar powder in a mass ratio of 1:1:1, and the particle size is 60 mesh.

[0044] a3) Warm up to 130°...

Embodiment 2

[0053] A kind of biomass composite material that is used for toothbrush handle of the present embodiment, preparation method is as follows (the following components are all in parts by weight):

[0054] Step a, prepare modified wood flour:

[0055] a1) Weigh 40 parts of L-lactide and 55 parts of log powder and dry at 65°C for 3 hours to control the moisture content to ≤0.02%; weigh 1 part of dibutyltin dilaurate and use toluene as a solvent to prepare dilauric acid Dibutyltin mass concentration is 2-6% toluene solution, standby;

[0056] a2) Add L-lactide into the reactor, and gradually raise the temperature to 115°C under stirring. After the L-lactide is completely melted, add the dried log powder and keep a constant temperature to make L-lactide and log powder Mix well and evenly;

[0057] In the above steps, the log powder is a mixture of poplar wood powder and pine wood powder in a mass ratio of 2:1, and its particle size is 70 orders;

[0058] a3) Warm up to 130°C, add...

Embodiment 3

[0067] A kind of biomass composite material that is used for toothbrush handle of the present embodiment, preparation method is as follows (the following components are all in parts by weight):

[0068] Step a, prepare modified wood flour:

[0069] a1) Weigh 55 parts of L-lactide and 45 parts of log powder and dry at 55°C for 4 hours to control the moisture content to ≤0.02%; weigh 3 parts of stannous octoate and use toluene as a solvent to prepare the mass concentration of stannous octoate 6% toluene solution, standby;

[0070] a2) Add L-lactide into the reactor, and gradually raise the temperature to 120°C under stirring. After the L-lactide is completely melted, add the dried log powder and keep a constant temperature to make the L-lactide and log powder Mix well and evenly;

[0071] In the above steps, the log powder is a mixture of teak powder, birch powder and poplar powder in a mass ratio of 3:5:1, and its particle size is 80 orders;

[0072] a3) Warm up to 130°C, ad...

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Abstract

The invention relates to the technical field of biodegradable high polymer materials, in particular to a biomass composite for a toothbrush handle and a preparation method of the biomass composite. The biomass composite mainly comprises the following raw materials: 50-65 parts of poly butylenes succinate, 20-40 parts of polylactic acid, 15-30 parts of modified starch, 10-20 parts of modified woodflour, 2-8 parts of nano talcum powder, 0.1-0.5 parts of compatilizer, 0.2-0.8 parts of antioxidant, 0.2-0.6 parts of lubricant and 0.8-1.5 parts of antibacterial agent. Through a synergistic effect of components, the toughness, plasticity, strength, antibacterial properties and degradability of the biomass composite are improved; and at the same time, the cost is greatly lowered, so that the large-scale production and application are facilitated.

Description

technical field [0001] The invention relates to the technical field of biodegradable polymer materials, in particular to a biomass composite material used for a toothbrush handle and a preparation method thereof. Background technique [0002] Toothbrush is one of the main utensils for daily oral cleaning. Toothbrush is used as a consumable product. my country consumes hundreds of millions of toothbrushes every year, and the world consumes billions of them every year. After the toothbrush is used for a period, it will be thrown away directly. The existing toothbrush handles on the market are made of polypropylene (PP), polyethylene (PE), polybutylene terephthalate ( PETG) and other petroleum-based plastic materials, 95% of used toothbrushes cannot be classified and utilized. Some toothbrush handles flow into the ocean with rainwater, and some are disposed of by burying or incinerating. The way of incineration will produce a lot of toxic by-products; the way of burying, the...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L97/02C08L3/02C08K3/34
CPCY02W90/10
Inventor 魏志国梁世丰
Owner 广东巨塑科技有限公司
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