Ageing resistant wood plastic composite modified by titanium oxide fiber and lignin and preparation method thereof

A wood-plastic composite material and composite material technology, applied in the field of polymer processing, can solve the problems of material quality degradation, shortening service life, endangering human health, etc. performance effect

Inactive Publication Date: 2013-03-27
CHANGSHU YUTYRONE ADVANCED WEAR MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are four major defects in wood recombined products such as fiberboard, high-density board, woodworking board, and particle board widely used in the market at present: First, the compatibility between untreated wood fiber and plastic is poor, and the combination of plastic and plant fiber is not tight. This leads to a decline in the quality of the material; second, the wood effect is not ideal; third, a large amount of phenolic resin is used as an adhesive, which causes the product to release a large amount of formaldehyde, which is harmful to human health; fourth, it still consumes a large amount of wood resources, which restricts the development space of the product
[0005] However, wood-plastic composite materials also have some obvious shortcomings, such as long-term use, especially in the open air, prone to cracking, fading and other aging phenomena, thus shortening its service life and limiting its use range

Method used

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  • Ageing resistant wood plastic composite modified by titanium oxide fiber and lignin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The raw material components are recorded as: 2 parts of titanium oxide fibers (10 nm in diameter, 1 μm in length, rutile type), 5 parts of alkali lignin, 28 parts of polyethylene, 50 parts of wood powder, and maleic anhydride grafted polyethylene 3 parts, 2 parts of zinc stearate, 1.5 parts of polyethylene wax, 7 parts of calcium carbonate, 0.5 part of iron red.

[0026] First, the above-mentioned raw materials are mixed evenly on a mixer, and the speed of the mixer is 3000 rpm, and then the mixed material is extruded and granulated in a twin-screw granulator. The head temperature is 180°C, the screw speed is 20r / min, and the feeder speed is 30r / min, and then the obtained pellets are sent into the twin-screw finished product extruder, and extruded and shaped through a die to obtain a wood-plastic composite product. The body temperature of the screw molding machine is 145°C-190°C, the die head temperature is 175°C, the screw speed is 40r / min, and the feeder speed is 30r / ...

Embodiment 2

[0028] The raw material components are recorded as follows by weight: 5 parts of titanium oxide fibers (1 μm in diameter, 10 μm in length, anatase type), 10 parts of acid lignin, 25 parts of polyvinyl chloride, 40 parts of wood powder, and 3 parts of phenolic resin , 4.5 parts of dibutyl phthalate, 12 parts of wollastonite, and 0.5 parts of carbon black.

[0029] First, the above-mentioned raw materials are mixed evenly on a mixer, and the speed of the mixer is 9000 rpm, and then the mixed material is extruded and granulated in a twin-screw granulator. The head temperature is 190°C, the screw speed is 30r / min, and the feeder speed is 40r / min, and then the obtained pellets are sent into the twin-screw finished product extruder, and extruded and shaped through a die to obtain a wood-plastic composite product. The body temperature of the screw molding machine is 145°C-190°C, the die temperature is 185°C, the screw speed is 50r / min, and the feeder speed is 40r / min.

Embodiment 3

[0031] The raw material components are recorded as follows by weight: 15 parts of titanium oxide fibers (5 μm in diameter, 50 μm in length, anatase type), 1 part of solvent lignin, 20 parts of polystyrene, 45 parts of wood powder, and maleic anhydride. 0.5 parts of branched polystyrene, 10 parts of ethylene bis-stearamide, and 8.5 parts of talc.

[0032] First, mix the above-mentioned raw materials evenly on a mixer, and the speed of the mixer is 5000 rpm, and then extrude and granulate the mixed material in a twin-screw granulator. The head temperature is 200°C, the screw speed is 40r / min, the feeder speed is 50r / min, and then the obtained pellets are sent into the twin-screw finished product extruder, and extruded through the die to set the shape to obtain a wood-plastic composite product. The body temperature of the screw molding machine is 145°C-190°C, the die temperature is 195°C, the screw speed is 60r / min, and the feeder speed is 50r / min.

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Abstract

The invention discloses an ageing resistant wood plastic composite modified by a titanium oxide fiber and lignin and a preparation method thereof. The composite material is prepared by mixing and extruding the following raw materials, by weight, 0.5-15 parts of the titanium oxide fiber, 1-10 parts of lignin, 20-50 parts of a thermoplastic, 40-60 parts of a wood fiber raw material, 0.5-10 parts of a compatilizer, 1-10 parts of a lubricant and 5-15 parts of a filler. The composite material of the invention, which can effectively overcome disadvantages of low strength and bad ageing resistance of common wood plastic composite materials, can be widely applied to outdoor garden floors, fences, household decorations, building materials, logistics consumption materials and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer processing, and relates to a wood-plastic composite material, in particular to an aging-resistant wood-plastic composite material modified by titanium oxide fibers and lignin and a preparation method thereof. Background technique [0002] my country is a country with poor wood resources. The forest coverage rate is only 12.7%, and the per capita forest stock volume is 10 cubic meters. It needs to import a large amount of wood every year. With the advancement of environmental protection policies, my country's wood resources have shifted from natural forests to artificial forests, and the original large-diameter wood resources have dropped sharply. Therefore, wood recombination products have become an important supplement to the current wood resources and an important development direction of the utilization of wood resources in my country. [0003] However, there are four major defects in the wood...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08K7/08C08K3/22B29C47/92B29B9/06B29C48/92
CPCB29C48/04B29C48/40
Inventor 史以俊王昌松姚文俊穆立文
Owner CHANGSHU YUTYRONE ADVANCED WEAR MATERIALS TECH
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