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CN-122011715-A - PC-ABS composite material and preparation method and application thereof

CN122011715ACN 122011715 ACN122011715 ACN 122011715ACN-122011715-A

Abstract

The invention belongs to the technical field of engineering plastics, and particularly relates to a PC-ABS composite material, and a preparation method and application thereof. The invention takes PC resin as a matrix, can reduce the shearing stress of the base material and the glue when the temperature is increased by adding mica powder with specific diameter-thickness ratio and mesh number, and simultaneously, the reactivity of the PC resin and polyurethane glue is enhanced due to the high diameter-thickness ratio of the mica powder, thereby obviously improving the adhesive force between the base material and the glue. On the basis, the ABS resin with specific rubber phase particle size is further introduced, so that the effect of mica powder is prevented from being shielded while the good mechanical property of the material is maintained, the integral mechanical property can be synergistically enhanced, and finally, the PC-ABS composite material has high toughness, high stripping force and excellent heat-resistant bonding stability, and can be widely applied to automotive interior cladding parts.

Inventors

  • ZENG FANWEI
  • DING CHAO
  • LI PENGHAO
  • LIN RONGTAO
  • CHEN SHIHAO
  • XUE FEI
  • JI GUANGYAO
  • LI MINGKUN

Assignees

  • 江苏金发科技新材料有限公司
  • 上海金发科技发展有限公司

Dates

Publication Date
20260512
Application Date
20260130

Claims (10)

  1. 1. The PC-ABS composite material is characterized by comprising the following components in parts by weight: 40-80 parts of PC resin, 5-40 parts of ABS resin and 5-20 parts of mica powder; Wherein the mesh number of the mica powder is more than or equal to 300 meshes; the diameter-thickness ratio of the mica powder is more than or equal to 65:1; the average particle diameter of the rubber phase of the ABS resin is more than or equal to 0.5 mu m.
  2. 2. The PC-ABS composite of claim 1 wherein the mica powder comprises at least one of the following (1) - (2): (1) The mesh number of the mica powder is 300-1000 meshes; (2) The diameter-thickness ratio of the mica powder is (65-120): 1.
  3. 3. The PC-ABS composite according to claim 1, wherein the PC resin has a melt flow rate of 8 to 32g/10min at 300 ℃ and 1.2 kg.
  4. 4. The PC-ABS composite according to claim 1, wherein the ABS resin comprises at least one of the following (1) - (2): (1) The average particle diameter of the rubber phase of the ABS resin is 0.5-1.5 mu m. (2) The melt flow rate under the condition of 220 ℃ and 10kg is 2-30 g/10min.
  5. 5. The PC-ABS composite material according to claim 1, further comprising 1-5 parts of MBS resin.
  6. 6. The PC-ABS composite material according to claim 4, wherein the MBS resin has a melt flow rate of 10-20 g/10min under a load of 1.2kg at 300 ℃.
  7. 7. The PC-ABS composite material according to claim 1, further comprising 0.05-1.5 parts of other auxiliary agents.
  8. 8. The preparation method of the PC-ABS composite material is characterized by comprising the steps of uniformly mixing the components, and carrying out melt extrusion and granulation to obtain the PC-ABS composite material.
  9. 9. Claim 1 of 7, The application of the PC-ABS composite material in preparing automobile interior ornaments.
  10. 10. A coated article comprising a coated article having a coating adhered to an outer surface thereof by a glue, said article comprising the article of claim 1 The PC-ABS composite material according to 7.

Description

PC-ABS composite material and preparation method and application thereof Technical Field The invention belongs to the technical field of engineering plastics. More particularly, relates to a PC-ABS composite material, a preparation method and application thereof. Background The coating process is used as a key post-treatment means of the automotive interior plastic product, and the touch feeling and the comfort of the interior are effectively improved by attaching the leather, the felt and other fabrics on the surface of the plastic substrate, so that the automotive interior plastic product is widely favored by host factories and consumers. Among commonly used interior plastic materials such as PC/ABS, ABS, PP, PC/ABS alloy is the first choice for many high-demand application scenes due to its excellent heat resistance and low-temperature impact resistance. However, the material also has obvious short plates, and when the temperature is changed severely, the material is easy to generate obvious dimensional change, so that larger shearing stress is generated between the coating layer and the matrix, thereby causing the fabric to fall off, and seriously affecting the durability and the appearance of the product. At present, although the common PC/ABS alloy commonly adopted in the market has good mechanical strength, the bonding strength between the common PC/ABS alloy and a coating material is still obviously insufficient, and especially under the high-temperature working condition, the degumming problem frequently occurs, so that the common PC/ABS alloy becomes a key technical bottleneck for restricting the quality and the reliability of the interior trim. Disclosure of Invention The technical problem to be solved by the invention is to overcome the defect and the defect that the degumming problem frequently occurs under the high-temperature working condition, and provide the PC-ABS composite material, wherein the common PC/ABS alloy commonly adopted in the existing market still has the obvious defect of the bonding strength with the coating material although the common PC/ABS alloy has good mechanical strength. The invention aims to provide a preparation method of the PC-ABS composite material. It is another object of the present invention to provide the use of the PC-ABS composite material. It is a further object of the present invention to provide a coated article. The above object of the present invention is achieved by the following technical scheme: the invention provides a PC-ABS composite material, which comprises the following components in parts by weight: 40-80 parts of PC resin (polycarbonate), 5-40 parts of ABS resin (acrylonitrile-butadiene-styrene terpolymer) and 5-20 parts of mica powder; Wherein the mesh number of the mica powder is more than or equal to 300 meshes; the diameter-thickness ratio of the mica powder is more than or equal to 65:1; the average particle diameter of the rubber phase of the ABS resin is more than or equal to 0.5 mu m. The invention takes PC resin as a matrix, can reduce the shearing stress of the base material and the glue when the temperature is increased by adding mica powder with specific diameter-thickness ratio and mesh number, and simultaneously, the reactivity of the PC resin and polyurethane glue is enhanced due to the high diameter-thickness ratio of the mica powder, thereby obviously improving the adhesive force between the base material and the glue. On the basis, the ABS resin with specific rubber phase particle size is further introduced, so that the effect of mica powder is prevented from being shielded while the good mechanical property of the material is maintained, the integral mechanical property can be synergistically enhanced, and finally, the PC-ABS composite material has high toughness, high stripping force and excellent heat-resistant bonding stability. Preferably, the PC resin accounts for not less than 41% of the mass of the PC-ABS composite material. Specifically, the PC resin may be 40, 42, 45, 50, 55, 60, 65, 70, 75, 80 parts, or the like, or a specific point value between any of the above values, and any interval range consisting of these values may be included. For the sake of brevity, all possible point values or range values are not listed here one by one. The system of the present invention is not limited in the type of PC, and bisphenol A type polycarbonate is preferable, and homemade PC may be used. Specifically, the ABS resin may be 5, 10, 15, 20, 23, 25, 30, 35, 40 parts, etc., or a specific point value between any of the above values, and may include any interval range consisting of these values. For the sake of brevity, all possible point values or range values are not listed here one by one. Specifically, the mica powder may be 5, 10, 13, 15, 20 parts, etc., or a specific point value between any of the above values, and any interval range consisting of these values may be included. For the sake of brevity, all possible point v