High-toughness halogen-free flame-retardant reinforced PC (polycarbonate)/ASA (acrylonitrile styrene acrylate) alloy and preparation method thereof

A high-toughness and alloy technology, which is applied in the field of high-toughness halogen-free flame retardant reinforced PC/ASA alloy and its preparation, can solve the problems of low comprehensive mechanical properties of flame retardant alloys, large amount of flame retardants, and reduced impact resistance. , to achieve good mechanical properties, high flame retardant efficiency, and reduce processing temperature.

Inactive Publication Date: 2017-12-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main problem of halogen-free flame-retardant PC / ASA alloy is that the addition of flame retardant is large, the comprehensive mechanical properties of the flame-retardant alloy are low, especially the impact resistance performance drops significantly, and the flame-retardant efficiency is not high.

Method used

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  • High-toughness halogen-free flame-retardant reinforced PC (polycarbonate)/ASA (acrylonitrile styrene acrylate) alloy and preparation method thereof
  • High-toughness halogen-free flame-retardant reinforced PC (polycarbonate)/ASA (acrylonitrile styrene acrylate) alloy and preparation method thereof
  • High-toughness halogen-free flame-retardant reinforced PC (polycarbonate)/ASA (acrylonitrile styrene acrylate) alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] A silicon-phosphorus synergistic flame-retardant reinforced PC / ASA alloy, its formula composition is as follows (mass parts):

[0051]

[0052] The PC has a weight average molecular weight of 40,000 and a density of 1.18g / cm 3 , the mass content of ASA graft copolymer in the described ASA resin (brand PW-978B) is 60%, the mass content of methyl styrene is 40%, and the softening point under 50 ℃ / hr test condition is 115 ℃ , UL-94 vertical combustion rating is HB. The compatibilizer is SMA, the maleic anhydride graft rate is 18%, and the number average molecular weight is 12,000-18,000, and the toughening agent is Japanese Mitsubishi Rayon silicon toughening agent S-2001. The antioxidant is 4,4'-thiobis(6-tert-butyl-3-methylphenol), the anti-dripping agent is polytetrafluoroethylene; the lubricant is vinyl bisstearic acid amide.

[0053] The halogen-free composite flame retardant is obtained by compounding and mixing triphenyl phosphate and quaternary phosphonium sal...

Embodiment 2

[0057] A silicon-phosphorus synergistic flame-retardant reinforced PC / ASA alloy, its formula composition is as follows (mass parts):

[0058]

[0059] The PC has a weight average molecular weight of 40,000 and a density of 1.18g / cm 3 , the mass content of ASA graft copolymer in the described ASA resin (brand PW-978B) is 60%, the mass content of methyl styrene is 40%, and the softening point under 50 ℃ / hr test condition is 115 ℃ , UL-94 vertical combustion rating is HB. The compatibilizer is SMA, the maleic anhydride graft rate is 18%, and the number average molecular weight is 1.2-1.8 million, and the toughening agent is American Kraton toughening agent FG1901 (maleic anhydride grafted SEBS block copolymerization matter), wherein the maleic anhydride graft ratio is 1.7%, and the mass ratio of styrene and rubber phase is 37:63. The antioxidant is (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, the anti-dripping agent is polytetrafluoroethylene, and the lubricant is ...

Embodiment 3

[0064] A silicon-phosphorus synergistic flame-retardant reinforced PC / ASA alloy, its formula composition is as follows (mass parts):

[0065]

[0066] The PC has a weight average molecular weight of 40,000 and a density of 1.18g / cm 3 , the mass content of ASA graft copolymer in the described ASA resin (brand PW-978B) is 60%, the mass content of methyl styrene is 40%, and the softening point under 50 ℃ / hr test condition is 115 ℃ , UL-94 vertical combustion rating is HB. The compatibilizer is SMA, the maleic anhydride graft rate is 18%, and the number average molecular weight is 12,000-18,000, and the toughening agent is Japanese Mitsubishi Rayon silicon toughening agent S-2001. The antioxidant is 4,4'-thiobis(6-tert-butyl-3-methylphenol), the anti-dripping agent is polytetrafluoroethylene; the lubricant is vinyl bisstearic acid amide. The halogen-free composite flame retardant is obtained by compounding and mixing triphenyl phosphate and quaternary phosphonium salt modifie...

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Abstract

The invention relates to high-toughness halogen-free flame-retardant reinforced PC (polycarbonate)/ASA (acrylonitrile styrene acrylate) alloy and a preparation method thereof. The alloy is prepared from the following raw materials in parts by mass: 55 to 65 parts of PC, 10 to 20 parts of ASA, 3 to 8 parts of compatilizer, 4 to 7 parts of toughening agent, 15 to 20 parts of halogen-free composite flame retardant, 0.5 to 1 part of anti-drop agent, 0.1 to 0.5 part of lubricant and 0.1 to 0.5 part of antioxidant. The preparation method comprises the steps of weighing the raw materials according to the proportion, evenly mixing, putting the raw materials into a feeding opening of a twin-screw extruder, setting a rotation speed of the twin-screw extruder as 100 to 300r/min and extruding and granulating to obtain the high-toughness halogen-free flame-retardant reinforced PC/ASA alloy. The alloy material disclosed by the invention has the advantages of very good comprehensive mechanical property and flame retardance and low heat release rate, further avoids generating a lot of molten drops and smog and is a high-efficiency flame-retardant environment-friendly practical alloy material.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a high-toughness halogen-free flame-retardant reinforced PC / ASA alloy and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is an engineering plastic with excellent performance. It is widely used in various fields because of its excellent mechanical properties and high temperature resistance. However, polycarbonate also has poor fluidity, notch sensitivity, and easy to produce Defects such as internal stress cracking. ASA resin is a terpolymer of styrene-acrylonitrile-butyl acrylate, which is superior to ABS resin in terms of fluidity, weather resistance, and colorability. PC / ASA alloy can realize the complementary advantages of the two resins and obtain comprehensive mechanical properties. A wide range of alloys with excellent properties and easy processing and forming. [0003] With the improvement of people's living standards, the society has str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/04C08L51/00C08L27/18C08K13/06C08K9/04C08K3/34C08K5/523B29C47/92B29B9/06B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704B29C2948/92857C08L69/00C08L2201/02C08L2201/22C08L2205/035C08L2205/08C08L2207/53C08L51/04C08L51/003C08L27/18C08L51/006C08K13/06C08K5/523C08K3/346C08K9/04
Inventor 高山俊刘俊威李思宇王凯
Owner WUHAN UNIV OF TECH
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