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Preparation method of ABS (Acrylonitrile Butadiene Styrene)-based wood-plastic composite

A wood-plastic composite material and ABS resin technology, which is applied in the field of preparation of ABS-based wood-plastic composite materials, can solve problems such as poor compatibility, poor mechanical properties, and insignificant interface improvement of ABS-based wood-plastic composite materials. , to achieve the effect of improving mechanical properties, excellent interface improvement effect and high reactivity

Active Publication Date: 2013-10-30
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the main components of plant fibers are cellulose, hemicellulose and lignin, which contain a large number of hydroxyl groups, the plant fibers are very hydrophilic and have poor compatibility with hydrophobic thermoplastics. The interface bonding strength of wood-plastic composite materials is low, and the mechanical properties are not good
At present, the most effective method is to improve the interface modifier of wood-plastic composites by adding compatibilizers. For polyethylene, polypropylene, and polyvinyl chloride-based wood-plastic composites, commonly used interface modifiers include titanate, Aluminate, silane coupling agent, maleic anhydride grafted polymer, etc., but these modifiers have no obvious effect on improving the interface of ABS-based wood-plastic composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Prepare a mixture of 2-amino-2-ethyl-1,3-propanediol and zinc stearate. In a reactor with a temperature of 170°C and a rotation speed of 200 rpm, add 100 part of ABS resin, after the ABS resin is completely melted, dropwise add a mixed solution containing 40 parts of 2-amino-2-ethyl-1,3-propanediol and zinc stearate mixture (2-amino-2-ethyl- 1,3-Propanediol and zinc stearate (mass ratio 1:0.05), after the dropwise addition, react for another 0.5 hour to end the reaction and obtain the ABS graft.

[0032] (2) drop into ABS resin in mixing equipment, then add 100 mesh bamboo powder, above-mentioned interface modifier ABS graft, lubricant, formula is by mass parts 100 parts of ABS resin, 30 parts of bamboo powder, interface modification 5 parts of agent, 2 parts of lubricant stearic acid. After mixing evenly, the ABS-based wood-plastic composite material was prepared through a twin-screw extruder, and the test results of its mechanical properties are shown in Table 1...

Embodiment 2

[0036] (1) A mixture of ethanolamine and cadmium acetate is made into a mixed solution. In a reactor at a temperature of 200°C, with a rotation speed of 100 rpm, 100 parts by mass of ABS resin is added. After the ABS resin is completely melted, 25 parts of ethanolamine and cadmium acetate are added dropwise. The mixed liquid of the cadmium acetate mixture (ethanolamine and cadmium acetate in a mass ratio of 1:0.1), after the dropwise addition, was reacted for another 2 hours, and the reaction was terminated to obtain the ABS graft.

[0037] (2) drop into ABS resin in mixing equipment, add 80 order wood flours, above-mentioned ABS graft, lubricant again, formula is by mass parts 100 parts of ABS resins, 50 parts of wood flours, 8 parts of interfacial modifiers, Lubricant silicone oil 0.5 parts. After mixing evenly, the ABS-based wood-plastic composite material was prepared through an open mill, and the test results of its mechanical properties are shown in Table 2.

[0038] Ta...

Embodiment 3

[0041] (1) Dissolve the mixture of 2-aminophenol and itaconic acid to form a mixed solution. In a reactor at a temperature of 260°C, with a rotation speed of 20 rpm, add 100 parts by mass of ABS resin. After the ABS resin is completely melted, Add dropwise 15 parts by mass of a mixture of 2-aminophenol and itaconic acid (2-aminophenol and itaconic acid in a mass ratio of 1:0.05). After the addition is complete, react for another 0.5 hour to end the reaction and obtain the desired graft product.

[0042] (2) Put ABS resin into the mixing equipment, then add 60 mesh rice bran, the above-mentioned interface modifier ABS graft, lubricant, and the formula is 100 parts of ABS resin in parts by mass, 80 parts of rice bran, and 10 parts of interface modifier. 1 part, lubricant polyethylene wax 1 part. After mixing evenly, the ABS-based wood-plastic composite material was prepared by an internal mixer, and the test results of its mechanical properties are shown in Table 3.

[0043] T...

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Abstract

The invention discloses a preparation method of an ABS (Acrylonitrile Butadiene Styrene)-based wood-plastic composite, which comprises the steps of: firstly, reacting ABS resin with beta-alkamine under the condition of the existence of lewis acid to obtain an ABS graft; and then using the graft as an interface modifying agent, blending with a plant fiber and the ABS resin, and plastifying and forming the ABS-based wood-plastic composite. A reactive group included by the graft has high reaction activity, and the ABS-based wood-plastic composite has excellent interface improvement effect, dispersion vegetable fibers in an ABS matrix is facilitated, and the mechanical property of the ABS-based wood-plastic composite can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, in particular to a method for preparing an ABS-based wood-plastic composite material. technical background [0002] Acrylonitrile-butadiene-styrene copolymer (ABS) is widely used in industries such as machinery, automobiles, electronic appliances, instrumentation, textiles and construction due to its good mechanical properties, electrical properties, surface properties and processing properties. It is a thermoplastic with a wide range of uses. [0003] Wood-plastic composite material is a new type of environmentally friendly material that has emerged internationally in recent years. It is made of plant fibers such as wood powder, bamboo powder, rice bran, and straw, and thermoplastics (such as: polyethylene, polypropylene, polyvinyl chloride, etc.) Functional modifiers and other additives, composite materials with excellent performance made by plastic molding process. Wood-plastic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L55/02C08L97/02C08F279/04C08F8/32
Inventor 何慧马丽贾德民罗远芳
Owner SOUTH CHINA UNIV OF TECH