ABS composite material, application and preparation method thereof

Abstract

The invention relates to an ABS composite material, and application and a preparation method thereof, belonging to the technical field of macromolecules. The ABS composite material comprises the following raw material components in percentage by weight: 53.5%-89.6% of regenerated ABS, 0.1%-1% of a chain extender, 5%-15% of regenerated phenolic plastic, 2%-15% of silicon carbide, 2%-15% of aluminumoxide, 0.1%-0.3% of a coupling agent, 0.1%-0.5% of an antioxidant and 0-4% of other assistants. The ABS composite material provided by the invention has excellent mechanical properties and excellentshrinkage and warping resistance, and can be used for 3D printing.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and relates to an ABS composite material, its application and a preparation method. Background technique [0002] According to statistics, the world's plastic production reached 359 million tons in 2018, and China is already the world's largest plastic production country, accounting for 30% of the world's output. China's plastic consumption ranks first in the world, with 60.4215 million tons of plastic products produced in 2018. With the expansion of the use of plastics in the fields of electronic appliances, automobiles, plastic bags, etc., the accompanying waste products, plastic materials and plastic parts are increasing day by day. In order to deal with plastic waste at home and abroad, a large number of recycling companies have sprung up, and there are relatively mature processes and methods for recycling thermoplastics and thermosetting plastics. However, due to the irreversible cu...

AI Technical Summary

Problems solved by technology

Now polymer materials such as PLA and PA can be directly used as 3D printing consumables, while ABS materials have problems such as warping due to shrinkage, which limits their application in 3D printing.

[0006] Patent publication CN107325473A discloses a high wear resistance composite material, which uses 38-56% ABS resin, 26-34% poly-p-phenylene terephthalamide, 8-14% epoxy resin, 42-58 % glass fiber, 6-12% filler, 1-3% coupling agent, 3-9% wear-resistant agent, 0.5-2% antioxidant, prepared a high wear resistance, At the same time, it is a material with good mechanical properties. According to the embodiment, the friction coefficient of the ABS composite material is between 0.18 and 0.26, and the tensile strength is between 78.4 and 98.1MPa. Its high tensile strength comes from glass Fiber reinforcement, but because the filling amount of the material is as high as 51-79%, the plasticity of the material will become very poor, and the molding process will inevitably be limited, making it difficult to use for 3D printing

Patent publication CN107141701A discloses an ABS-based nanocomposite material for 3D printing and its preparation method, which uses 54-60% ABS, 4.8-9% TPU, 4-8% modified nano-silica masterbatch, The ratio of 0.5-0.7% plasticizer, 2-4% solubilizer, and 0.5-0.7% antioxidant, through the first step, the surface treatment of nano-silica; the second step, the modified nano-silica Silica and ABS particles are prepared into grade 1 masterbatch; in the third step, the grade 1 masterbatch, ABS, TPU, plasticizer, solubilizer and antioxidant are mixed and then added to a twin-screw extruder for extrusion granulation. An ABS-based nanocomposite material for 3D printing, which has a composite material with high impact strength, good toughness, excellent mechanical properties and thermal properties. However, according to its implementation examples, the Rockwell hardness of the composite material is reduced from 109 to To 95 ~ 105, so the material is not suitable for wear resistance scene

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