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Preparation method of waste paint slag compatibilized wood-plastic composite material

A wood-plastic composite material and paint slag technology is applied in the field of preparation of waste paint slag compatibilizing wood-plastic composite materials, and achieves the effect of reducing production costs and realizing the unification of environmental benefits, social benefits and economic benefits.

Active Publication Date: 2014-03-26
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] There are many technologies for the comprehensive utilization of paint slag above, but there are no reports about the use of waste paint slag to prepare wood-plastic composite materials.

Method used

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  • Preparation method of waste paint slag compatibilized wood-plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Extrusion molding of polyethylene paint slag wood-plastic board.

[0037] Use a pulverizer or a ball mill to grind the wood fiber or paint slag into a fine powder with a fineness of 40-60 mesh, and then dry it in a vacuum drying oven (to keep the moisture content below 1.0%). Add 10Kg of the final wood fiber powder to the high mixer, then add 10 Kg of waste polyethylene plastic, 2 Kg of paint residue, 0.5Kg of lubricant (calcium stearate: 0.2Kg, zinc stearate: 0.2Kg, polyethylene Wax: 0.1Kg), 1 Kg of self-made acrylate compatibilizer, mixed at a high speed for 30 minutes and then put into a twin-screw extruder for extrusion molding.

[0038] The process temperature control of the extruder is as follows:

[0039] Main engine speed: 8.0-20.0r / min, feeding speed: 16.0-40.0r / min, pressure control: 12.5-20.0Mpa, cylinder zone 1: 190-180°C, cylinder zone 2: 180-170°C , Barrel 3 zone: 170-160°C, barrel 4 zone: 160-155°C, confluence core: 170-160V, mold temperatur...

Embodiment 2

[0040] Example 2 Extrusion molding of polyethylene / polypropylene paint slag wood-plastic board.

[0041] Use a pulverizer or a ball mill to grind the rice husk powder or paint slag into a fine powder with a fineness of 20-40 meshes, and then dry it in a vacuum drying oven (to keep the moisture content below 1.0%). Add 10Kg of dried rice husk powder to the high mixer, then add 5 Kg of waste polypropylene plastic, 10 Kg of waste polypropylene plastic, 2 Kg of paint residue, 0.5Kg of lubricant (calcium stearate: 0.2Kg, stearin Zinc acid: 0.2Kg, polyethylene wax: 0.1Kg), self-made acrylate compatibilizer 2Kg, mixed at high speed for 30 minutes to form a premix, which was put into a twin-screw extruder for extrusion molding.

[0042] The process temperature control of the extruder is as follows:

[0043] Host speed: 8.0-20.0r / min, feeding speed: 16.0-40.0r / min, pressure control: 12.5-20.0Mpa, cylinder zone 1: 200-190°C, cylinder zone 2: 190-180°C , Barrel 3 zone: 180-170°C, bar...

Embodiment 3

[0044] Example 3: Polycarbonate / polyacrylonitrile-butadiene-polystyrene (PC-ABS) paint slag wood-plastic extrusion molding.

[0045] Use a grinder or ball mill to grind corn stalk powder or paint slag into fine powders with a fineness of 20-40 meshes, and then dry them in a vacuum drying oven (to keep the moisture content below 1.0%). Add 10Kg of dried corn stalk powder to the high mixer, then add 5 Kg of waste PC-ABS plastic, 10 Kg of waste polyethylene plastic, 2 Kg of paint residue, 0.5Kg of lubricant (calcium stearate: 0.2Kg, stearin Zinc acid: 0.2Kg, polyethylene wax: 0.1Kg), self-made acrylate compatibilizer 2Kg, mixed at high speed for 30 minutes to form a premix, which was put into a twin-screw extruder for extrusion molding.

[0046] The process temperature control of the extruder is as follows:

[0047] Main engine speed: 8.0-20.0r / min, feeding speed: 16.0-40.0r / min, pressure control: 12.5-20.0Mpa, barrel zone 1: 210-200°C, barrel zone 2: 200-190°C , Barrel 3 zon...

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Abstract

The invention relates to a preparation method of a waste paint slag compatibilized wood-plastic composite material, which comprises the following steps: mixing waste paint slag with thermoplastic resin and wood flour, compounding, and performing die pressing or extrusion to produce the wood-plastic composite material, wherein the paint slag is mainly composed of film forming matter, pigment, solvent and additive; the film former component in the paint slag contains multiple active functional groups such as hydroxyl groups, carboxyl groups, ester groups, amido groups and the like, and can be bonded with active groups on the surfaces of the wood flour and resin, such as hydroxyl groups, carboxyl groups, ester groups or the like; alkyl plastic chain segments in the film former or plasticizer in the paint slag are attached to soft chain segments of the resin, thereby increasing the interface bonding force and compatibility between the wood flour and the resin and improving the mechanical property of the wood-plastic composite material; and the pigment in the paint slag is used instead of master batches and added into the wood-plastic composite material, so that the decoration effect of a wood-plastic product is enhanced, and the production cost is lowered. Thus, the problems that waste paint slag pollutes environment and the waste paint slag treatment cost of an automobile manufacturer is high are effectively solved, and the unification of environmental benefits, social benefits and economic benefits is realized.

Description

technical field [0001] The invention relates to the field of preparation of wood-plastic composite materials and recycling of paint slag, specifically mixing paint slag, plant powder and thermoplastic resin and then molding or extruding to prepare wood-plastic composite materials or products. The application field relates to decorative substrates , building decoration, decoration materials, open-air tables and chairs, benches, picnic tables, packaging materials, furniture and many other fields used in parks, stadiums, streets, etc. Waste paint slag is a large amount of process produced by automobiles (or workpieces) during the spraying process. After spray paint mist and organic solvent gas are absorbed by circulating water, flocculants are added to make exhaust gas and overspray paint mist fully contact with circulating water, and then waste formed by slagging agent is added. [0002] Background technique [0003] Wood-plastic composite material is a kind of thermoplastic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L23/06C08L23/12C08L69/00C08L55/02C08L51/06C08L101/00
Inventor 赵剑英赵发林董云会
Owner SHANDONG UNIV OF TECH
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