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CN-122011650-A - PS/MBS alloy material for coextrusion and preparation method and application thereof

CN122011650ACN 122011650 ACN122011650 ACN 122011650ACN-122011650-A

Abstract

The invention provides a PS/MBS alloy material for coextrusion, a preparation method and application thereof, wherein the alloy material comprises, by mass, 50-90 parts of PS resin, 10-25 parts of MBS resin, 0-15 parts of compatilizer and 0.1-0.4 part of lubricant, the PS resin is selected from high impact polystyrene resin, the relative density is 1.0g/cm 3 ~1.05g/cm 3 , the heat distortion temperature is 60-70 ℃, and the MBS resin is a core-shell copolymer. The PS/MBS alloy material prepared by the preparation method provided by the invention can realize the technical effects of improving the surface glossiness of the PS plate co-extrusion layer and protecting environment.

Inventors

  • CHEN JIEQIN
  • CHEN TENGYUAN
  • WU BAIJIAN
  • HUANG XIONGGUAN
  • FU JILIANG

Assignees

  • 广东天雄新材料科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260209

Claims (10)

  1. 1. The alloy material for coextrusion is characterized by comprising the following preparation raw materials in parts by mass: 50-90 parts of PS resin, 10-25 parts of MBS resin, 0-15 parts of compatilizer and 0.1-0.4 part of lubricant; The PS resin is selected from high impact polystyrene resin, the relative density is 1.0g/cm 3 ~1.05g/cm 3 , and the heat distortion temperature is 60-70 ℃; The MBS resin is a core-shell copolymer.
  2. 2. The alloy for co-extrusion according to claim 1, wherein the mass ratio of the PS resin to the MBS resin is (5-9): 1.
  3. 3. The alloy for coextrusion according to claim 1, wherein the compatibilizer is at least one of maleic anhydride grafted polyethylene, maleic anhydride grafted polypropylene, or ethylene-methyl acrylate copolymer.
  4. 4. The alloy for co-extrusion according to claim 1, wherein the lubricant is at least one of stearic acid amide, methylene bis stearic acid amide or N, N' -ethylene bis stearic acid amide.
  5. 5. The alloy material for co-extrusion according to claim 1, further comprising 0.1-1.0 parts by mass of an antioxidant, 0.1-1.0 parts by mass of an ultraviolet absorber and 2-4 parts by mass of a pigment.
  6. 6. The alloy for co-extrusion according to claim 5, wherein the antioxidant is a compound of N, N' -bis- (3, 5-di-t-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine and tris (2, 4-di-t-butylphenyl) phosphite or a compound of N-stearyl β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate and tris (2, 4-di-t-butylphenyl) phosphite.
  7. 7. The alloy for coextrusion according to claim 5, wherein the ultraviolet absorber is at least one of a benzophenone-based ultraviolet absorber and a benzotriazole-based ultraviolet absorber.
  8. 8. A method of producing the alloy material for co-extrusion according to any one of claims 1 to 7, comprising the steps of: s1, mixing MBS resin, a lubricant, an optional antioxidant, an ultraviolet absorber and a pigment to prepare mixed powder; S2, mixing PS resin and a compatilizer to prepare mixed granules; And S3, adding the mixed granules into a main hopper of an extruder, adding the mixed powder into a feed opening in a side feeding mode, performing melt extrusion, water-passing granulating and drying to obtain the PS/MBS alloy material for co-extrusion.
  9. 9. The method according to claim 8, wherein in step S3, the temperature of the melt extrusion is 180 to 200 ℃, the screw rotation speed is 150 to 250rpm, and the feeding rotation speed is 10 to 15rpm.
  10. 10. Use of the alloy material for co-extrusion according to any one of claims 1 to 7 or the alloy material for co-extrusion according to any one of claims 8 to 9 in the production of PS decorative sheets.

Description

PS/MBS alloy material for coextrusion and preparation method and application thereof Technical Field The invention relates to the technical field of high polymer materials, in particular to a PS/MBS alloy material for coextrusion and a preparation method and application thereof. Background With the increasing demand of people for diversified decorations, the PS foam board is used as a common decoration material, and the surface glossiness of the PS foam board becomes an important factor for consumers to pay attention to. At present, a co-extrusion layer of the PS foam board is mainly manufactured by adopting a HIPS color master batch adding mode, but the surface glossiness of a product manufactured by adopting the mode is low, and the requirements of the market on high-glossiness products cannot be met. However, the conventional method for solving the problem of low surface glossiness of the PS foam board in the market mainly comprises two steps of manufacturing a co-extrusion layer by adopting a HIPS color master mode, wherein the surface glossiness of a product manufactured by adopting the method is low and cannot meet the high-end market demand, and adopting a film pasting mode, which can improve the surface glossiness, but needs to use glue for pasting, increases VOC emission, possibly causes environmental protection problems of heavy taste, formaldehyde precipitation and the like, and does not accord with the current green and environment-friendly development trend. Therefore, development of a novel modified material is needed, which not only can meet the requirements of a PS plate coextrusion process and can be molded at one time, but also can obviously improve the surface glossiness of a coextrusion layer, and meanwhile, the environmental protection problem brought by a film pasting process is avoided, so that the requirements of markets on high-glossiness and environment-friendly PS foam boards are met. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the prior art described above. Therefore, the invention provides a PS/MBS alloy material for coextrusion, and a preparation method and application thereof, which realize the technical effects of improving the surface glossiness of a PS plate coextrusion layer and protecting environment. According to a first aspect of the present invention, there is provided an alloy material for co-extrusion, comprising the following preparation raw materials in parts by mass: 50-90 parts of PS resin, 10-25 parts of MBS resin, 0-15 parts of compatilizer and 0.1-0.4 part of lubricant; The PS resin is selected from high impact polystyrene resin, the relative density is 1.0g/cm 3~1.05g/cm3, and the heat distortion temperature is 60-70 ℃; The MBS resin is a core-shell copolymer. In some preferred embodiments, the MBS resin is selected from at least one of M-724, M-722 or M-732 of the Japanese brillouin company. In some more preferred embodiments, the MBS resin is selected from M-724 of the Japanese brillouin company. M-724, M-722 has higher glossiness than M-732, wherein M-724 has better impact strength than M-722. In some embodiments, the mass ratio of the PS resin to the MBS resin is (5-9): 1. Experiments show that the surface glossiness of the co-extrusion layer is increased along with the addition of MBS in the co-extrusion alloy material, but excessive MBS can lead to softening of the material and reduction of glossiness. In some embodiments, the compatibilizing agent is at least one of maleic anhydride grafted polyethylene (PE-g-mah), maleic anhydride grafted polypropylene, or ethylene methyl acrylate copolymer (EMA). By adding the compatilizer, the compatibility between PS and MBS can be improved, the glossiness of the co-extrusion material is further improved, and meanwhile, the good mechanical property is maintained. If the compatibilizer is excessive, insufficient rigidity of the coextrusion material is caused, and the cost increases. In some preferred embodiments, the compatibilizer is maleic anhydride grafted polyethylene with a grafting ratio of 3.5% to 4.5%. In some embodiments, the lubricant is at least one of stearic acid amide, methylene bis stearic acid amide, or N, N' -ethylene bis stearic acid amide (EBS). In some embodiments, the alloy material for co-extrusion further comprises 0.1-1.0 parts by mass of an antioxidant, 0.1-1.0 parts by mass of an ultraviolet absorber and 2-4 parts by mass of a pigment. In some embodiments, the antioxidant is a complex of N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenediamine (antioxidant 1098) and tris (2, 4-di-tert-butylphenyl) phosphite (antioxidant 168), or a complex of N-octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate (antioxidant 1076) and tris (2, 4-di-tert-butylphenyl) phosphite. In some preferred embodiments, the antioxidant is formulated from N, N' -bis- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl) hexamethylenedi