Bamboo powder filled biomass-based resin composite material and preparation method thereof

A bio-based resin, composite material technology, applied in the field of environmentally friendly composite materials, can solve the problems of poor material cutability, no molecular weight size, left-handed or right-handed structure, difficult extrusion or injection molding, etc., to improve the interface. Compatibility and bond strength, superior environmental absorbability, and the effect of improving overall performance

Active Publication Date: 2009-12-16
SHENZHEN HONGCAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many such documents, such as: the Chinese invention patent application with the publication number CN101003667A, which discloses a "polylactic acid/natural fiber composite material and its production method", and another example: Chinese invention patent ZL200410060809.X discloses a "Bamboo Fiber Processing Technology" (authorized announcement number is CN1263922C), the natural fiber described in the former does not specify the specific source method, and polylactic acid does not provide molecular weight, left-handed or right-handed structure (hereinafter referred to as L or D, see below for details) figure 1 shown) content and other information, and materials such as bamboo fiber, without pre-treatment (removing pectin, polysaccharide, protein, etc.), will affect the comprehensive performance of composite materials to a large extent; the processing technology described in the latter, It is necessary to cut and crush the finished bamboo and then carry out subsequent processing, which wastes resources and brings certain negative environmental effects
[0004] For a long time, a large amount of bamboo powder waste after bamboo processing has been disposed of by incineration, landfill or discarded, and has not been effectively utilized.
[0005] For this reason, the C

Method used

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  • Bamboo powder filled biomass-based resin composite material and preparation method thereof
  • Bamboo powder filled biomass-based resin composite material and preparation method thereof
  • Bamboo powder filled biomass-based resin composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] 20 parts of spare bamboo powder (mass parts, the same below), 0.8 parts of titanate coupling agent (NDZ-311) are fully stirred evenly, and then mixed with 80 parts of polylactic acid (PLA) after drying treatment, the polylactic acid Mw=110,000, L content 67%, mass ratio 1010:168 0.4 part of mixed antioxidant, 0.2 part of UV-571 ultraviolet absorber, knead fully at high speed for 18 minutes, pour into twin-screw extruder while hot In the extruder, extrude and granulate under the conditions of a die head temperature of 180° C. and a screw speed of 80 rpm to obtain uniformly mixed pellets. In the next step, the mixed pellets are injected into an injection molding machine at a nozzle temperature of 175° C., and matched with a knife and fork mold to obtain a disposable knife and fork product.

Embodiment 2

[0061] Fully stir 30 parts of spare bamboo powder (parts by mass, the same below), 1.2 parts of silane coupling agent (KH-550), and then mix with 70 parts of polyhydroxybutyrate-valerate (PHBV) after drying , the Mw=120,000 of this PHBV, HV% is 4%, 0.3 part of 168 antioxidants, mass ratio UV-531: UV-284 is 0.3 part of mixed ultraviolet absorber of 1: 2 and fully kneads together in high-speed mixer 25 Minutes later, it was poured into a twin-screw extruder while it was hot, and pelletized under the conditions of a die head temperature of 169° C. and a screw speed of 110 rpm to obtain uniformly mixed pellets. In the next step, the mixed pellets are melted and extruded at 170°C, hot-pressed on a sheet forming machine at 170°C and 11MPa, and sheets with different thicknesses are obtained by adjusting the spacing between pressing rollers (0.6-3mm). Under positive pressure or negative pressure, the sheet is made into different shapes of disposable lunch boxes, plates, flower pots an...

Embodiment 3

[0063] 20 parts of spare bamboo powder (mass parts, the same below), 0.8 part of silane coupling agent (KH-570) are fully stirred evenly, and then with 80 parts of polyhydroxybutyrate (PHB) after drying treatment, the PHB Mw=150,000, 0.4 part of 1010 antioxidant, 0.4 part of mixed ultraviolet absorber with a mass ratio of UV-531:UV-284 of 1:4, fully kneaded in a high-speed mixer for 28 minutes, poured into the twin-screw while hot In the extruder, the pellets were granulated under the conditions of a die head temperature of 175° C. and a screw speed of 90 rpm to obtain uniformly mixed pellets. In the next step, the mixed granules are introduced into the injection molding machine for injection molding. The temperature of the nozzle is 180°C, and the matching molds such as flower pots and knives and forks are used to obtain disposable flower pots, knives and forks and other products.

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Abstract

The invention discloses a bamboo powder filled biomass-based resin composite material comprising the following components in part by weight: 20-60 parts of bamboo powder, 40-80 parts of biomass-based resin, 0.8-5 parts of resin acceptor, 0.2-0.6 part of antioxidant and 0.1-0.7 part of ultraviolet absorbent. The invention also discloses a preparation method of the composite material. Compared with the prior art, the invention has the advantages that waste bamboo powder is used as raw material, the hydrophilic and oleophobic bamboo powder is coupled with the oleophylic and lyophobic biomass-based resin by the resin acceptor, and thus the compatibility and the cohesional strength of interfaces of the bamboo powder and the biomass-based resin are improved. The composite material can be widely applied to the fields of automobile interior parts, traffic road blocks, food bags, preservative films, disposable tablecloth, disposable lunch boxes, flowerpots, knives and forks, and the like.

Description

technical field [0001] The invention relates to an environment-friendly composite material, in particular to a composite material using bamboo powder and bio-based resin as raw materials, and also relates to a preparation method of the bamboo powder-filled bio-based resin composite material. Background technique [0002] In recent years, composite materials prepared by compounding natural plant fibers such as wood and bamboo with various petroleum-derived plastics such as polypropylene, polyethylene, and polyvinyl chloride have been widely used in automotive interiors, building structures, and decoration. For wood materials, wood fiber and wood powder have been fully researched and applied, and have achieved certain economic and social benefits. However, wood has a long cycle (about 20 to 30 years), and my country is a country that is not rich in wood resources. The reserves are small, and the output cannot meet the needs of the market. develop. In comparison, bamboo is a r...

Claims

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Application Information

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IPC IPC(8): C08L67/00C08K5/56B29C47/40C08K5/54C08L97/02
Inventor 杨建吴香发伍洋顾群周坚蒋志强黎俊
Owner SHENZHEN HONGCAI NEW MATERIAL TECH
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