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CN-121991457-A - ABS composite material and preparation method and application thereof

CN121991457ACN 121991457 ACN121991457 ACN 121991457ACN-121991457-A

Abstract

The invention belongs to the technical field of ABS materials, and particularly discloses an ABS composite material and a preparation method and application thereof. The ABS composite material comprises, by weight, 40.2-79.2 parts of ABS resin, 10-35 parts of PMMA resin, 9-18 parts of a modifier, 0.8-3 parts of an aluminum pigment, 0.4-2 parts of a compatilizer, 0.3-1 part of a lubricating dispersant and 0.3-0.8 part of an antioxidant, wherein the modifier is a composition comprising a styrene-isoprene-styrene copolymer and a butadiene elastomer. The ABS material provided by the invention is a spraying-free material, can be directly used for injection molding of products with complex structures, and the obtained products have high metallic feeling and glossiness, high brightness, no welding line, very light flow marks and excellent appearance effect. The invention also provides a preparation method and application of the ABS composite material.

Inventors

  • MA ZUOGUANG
  • SONG GUOLI
  • QIAN YUYING
  • YANG ZHITAO
  • FENG XIANGMIN
  • JIANG YUEPING
  • WEI XINGZHAO
  • SHANG XIULING
  • CHEN XINCHANG

Assignees

  • 广东美的制冷设备有限公司
  • 广州华新科智造技术有限公司

Dates

Publication Date
20260508
Application Date
20241106

Claims (15)

  1. 1. The ABS composite material is characterized by comprising the following preparation raw materials in parts by weight: Wherein the modifier is a composition comprising a styrene-isoprene-styrene copolymer and a butadiene-based elastomer.
  2. 2. The ABS composite of claim 1 wherein the modifier has a molecular weight distribution of 1 to 3.
  3. 3. The ABS composite of claim 1 wherein the styrene-isoprene-styrene copolymer has a molecular structure with an bound isoprene content of 70% to 85%.
  4. 4. The ABS composite of claim 1 wherein the butadiene-based elastomer comprises at least one of styrene-butadiene-styrene block copolymer, styrene butadiene rubber, nitrile butadiene rubber, hydrogenated styrene butadiene rubber.
  5. 5. The ABS composite of claim 4 wherein the butadiene-based elastomer has a molecular structure with a bound butadiene content of 60% to 71%.
  6. 6. The ABS composite of claim 4 wherein the butadiene-based elastomer has a number average molecular weight of 4-13 ten thousand.
  7. 7. The ABS composite material according to claim 1, wherein the weight ratio of the styrene-isoprene-styrene copolymer to the butadiene-based elastomer in the modifier is 1:0.5-7.
  8. 8. The ABS composite of claim 1 wherein the weight ratio of the aluminum pigment to the modifier is 1:6 to 20.
  9. 9. The ABS composite of claim 1 wherein the aluminum pigment comprises more than 2 different aspect ratios of aluminum pigments.
  10. 10. The ABS composite of claim 9 wherein the aluminum pigment comprises an aluminum pigment having a radial thickness ratio of 80 or greater and a radial thickness ratio of 29 or greater, wherein the aluminum pigment having a radial thickness ratio of 80 or greater is 30% or less and the aluminum pigment having a radial thickness ratio of 29 or less is 70% or greater.
  11. 11. The ABS composite of claim 1 wherein the compatibilizer comprises at least one of styrene-acrylonitrile-glycidyl methacrylate, SEBS grafted maleic anhydride, ABS grafted maleic anhydride, or SBS grafted maleic anhydride.
  12. 12. The ABS composite of claim 1 wherein the lubricating dispersant comprises at least one of PE wax, pentaerythritol stearate or calcium stearate.
  13. 13. The method for preparing the ABS composite according to any one of claims 1 to 12, comprising the steps of: Weighing and mixing the raw material components according to the weight parts, and performing melt extrusion, granulation and drying to obtain the ABS composite material.
  14. 14. An article of manufacture comprising the ABS composite of any one of claims 1-12.
  15. 15. The article of manufacture of claim 14, wherein the article of manufacture comprises an air conditioner, a refrigerator, a television, a washing machine, a range hood, or an automobile.

Description

ABS composite material and preparation method and application thereof Technical Field The invention relates to the technical field of ABS materials, in particular to an ABS composite material and a preparation method and application thereof. Background The spraying-free material is an aesthetic plastic, and various aesthetic effects such as colorful, pearlescent, metallic texture and the like can be obtained by adding special effect pigments (such as aluminum pigment, pearlescent powder, copper gold powder and the like) into a plastic base material, carrying out melt blending granulation, and carrying out injection molding (extrusion/plastic suction) forming processing. The spraying-free material can obtain the appearance effect similar to spraying without a spraying procedure, and has the advantages of simple production flow, lower cost, safety, environmental protection, easy recycling, and the like compared with the traditional spraying material, accords with the development trend of low carbon and environmental protection, has wide market prospect, and is widely focused in the plastic industry. However, most effect pigments are flaky, and have differences of compatibility, rheological property, thermal stability and the like with resin base materials, so that when plastic melt passes through parts such as buckles, reinforcing ribs, holes, abrupt changes in thickness and the like in the molding process, the flaky effect pigments are very easy to be distributed in a mold cavity in a diversified manner, and surface defects such as welding lines, flow marks and the like are generated on the surface of a product. The existence of welding lines and flow mark defects greatly limits the application and popularization of the spraying-free material, and also becomes a technical problem to be solved in the field. The prior art improves the problems by various schemes, such as 1, improving the compatibility of aluminum pigment and matrix resin by carrying out surface modification on the aluminum pigment, and particularly comprises the steps of carrying out surface pretreatment on the aluminum pigment by adopting a coupling agent (such as a silane coupling agent, a titanate coupling agent or an aluminate coupling agent), or carrying out coating modification on the aluminum pigment by adopting a special structural substance (such as MAH-St-MMA copolymer, GMA copolymer and the like), or improving the compatibility of the aluminum pigment and the matrix resin by adding an auxiliary agent (such as a coupling lubricating composite modifier, oxidized polyethylene wax and the like), wherein the research by an industry engineer finds that the method has larger benefit on the mechanical property of a spraying-free material and has little effect on the improvement effect on the surface defects of the spraying-free material, 2, compounding the aluminum pigment with different specifications, and the method has a certain help on the improvement of the surface defects of a welding line, a flow mark and the like, but cannot completely eliminate the defects, in addition, the addition of the aluminum pigment with small diameter-thickness ratio and large particle size can lead the whole product to darkening, the metal feel to a decrease, the surface feel of the light-colored product, and the coarse particle size of the silica particles are not suitable for preparing a large-size (such as a glass filler is more than 3 μm), and the conventional filler is added with a large-size, and the glass filler is more difficult to be added with a large-grade (the glass filler is more than 5 μm is added, and the conventional filler is greatly has a large-grade is reduced), and the effect on the brightness is greatly is improved, the metal feel and the glossiness are greatly reduced, which will affect the metal texture of the spraying-free product, and the aesthetic effect of the spraying-free material is greatly reduced. For example, related art discloses a metal-like modified material, which uses ABS (acrylonitrile-butadiene-styrene copolymer) as matrix resin, and uses 1-5 parts of coupling lubrication composite modifier, 5-10 parts of C5 petroleum resin tackifier and 0-10 parts of filler to overcome the problem of serious weld line of spraying-free material, but because of poor compatibility of C5 petroleum resin and ABS, a large amount of the addition can greatly reduce the glossiness of the product, in addition, the addition amount of the coupling lubrication composite modifier is higher, which can lead to screw slipping during processing and also affect the mechanical property of the material. Also, a related art discloses a PC modified material having fine metallic texture, first, a spherical aluminum powder is pretreated with a silane coupling agent, then PAM is added, the PAM-AL modified microspherical aluminum powder is prepared by taking azodiisobutyronitrile as an initiator, and the method solves the problem that sheet aluminum powder is