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High-performance enhanced halogen-free red-phosphorus-free flame-retardant PBT engineering plastic material and preparation method thereof

A kind of engineering plastics, enhanced technology, applied in the field of polymer composite materials, can solve the problems of low mechanical properties, high smoke density of materials, etc., and achieve the effect of similar flame retardancy

Active Publication Date: 2020-09-04
宁波华腾首研新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current development of halogen-free flame-retardant PBT materials has high smoke density and low mechanical properties, and its tensile strength and bending strength are generally 15-20% lower than ordinary bromine-antimony flame-retardant PBT, which affects the actual use. Happening

Method used

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  • High-performance enhanced halogen-free red-phosphorus-free flame-retardant PBT engineering plastic material and preparation method thereof
  • High-performance enhanced halogen-free red-phosphorus-free flame-retardant PBT engineering plastic material and preparation method thereof
  • High-performance enhanced halogen-free red-phosphorus-free flame-retardant PBT engineering plastic material and preparation method thereof

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Effect test

preparation example Construction

[0047] Preparation of the mineral additive: take vermiculite and grind it for 1-2 hours in an environment with a relative humidity of 55-70% to obtain a grinding material, mix the grinding material with a hydrochloric acid solution with a mass fraction of 15%, and evaporate in a vacuum to obtain a processed Material, take the processed material and add glass fiber in the mass ratio of 1:8-15 to mix, that is, the mineral additive.

[0048] The macromolecular coupling agent is glycidyl methacrylate binary copolymer.

[0049] The monomers used for the glycidyl methacrylate binary copolymer include glycidyl methacrylate and monomer X; the monomer X is vinyl chloride, ethylene terephthalate, ethylene glycol dimethyl Any one of the acrylates; the glycidyl methacrylate accounts for 12% by mass of the total monomers.

[0050] The melt index (190° C., 2.16 kg) of the obtained glycidyl methacrylate binary copolymer is greater than or equal to 100 g / 10 min.

[0051] The antioxidant is ...

Embodiment 1

[0058] A high-performance enhanced halogen-free and red phosphorus-free flame-retardant PBT engineering plastic material, the formula of the engineering plastic specifically includes the following components by mass percentage:

[0059] PBT resin: 51.2%,

[0060] Halogen-free flame retardant: 11.1%,

[0061] Flame retardant synergist: 5.1%,

[0062] Macromolecular coupling agent: 2%,

[0063] Antioxidant: 0.5%,

[0064] Mineral additives: 30.1%.

[0065] Specifically, the relative viscosity of the PBT material is 0.8.

[0066] Specifically, the said halogen-free flame retardant is OP1240 grade halogen-free flame retardant produced by Klein Company.

[0067] Specifically, the flame retardant synergist is melamine polyphosphate.

[0068] Specifically, the preparation of the mineral additive: take vermiculite and grind it for 1 hour in an environment with a relative humidity of 55% to obtain a grinding material, mix the grinding material with a hydrochloric acid solution wi...

Embodiment 2

[0081] A high-performance enhanced halogen-free and red phosphorus-free flame-retardant PBT engineering plastic material, the formula of the engineering plastic specifically includes the following components by mass percentage:

[0082] PBT resin: 52%,

[0083] Halogen-free flame retardant: 10.1%,

[0084] Flame retardant synergist: 5.1%,

[0085] Macromolecular coupling agent: 2%,

[0086] Antioxidant: 0.5%,

[0087] Mineral additives: 30.3%.

[0088] Specifically, the relative viscosity of the PBT engineering plastic is 0.8.

[0089] Specifically, the preparation of the mineral additive: take vermiculite and grind it for 2 hours in an environment with a relative humidity of 65% to obtain a grinding material, mix the grinding material with a hydrochloric acid solution with a mass fraction of 15%, and evaporate in a vacuum to obtain a treatment material , take the processing material and add glass fiber in a mass ratio of 1:8 to mix, that is, mineral additives.

[0090] ...

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Abstract

The invention discloses a high-performance enhanced halogen-free red-phosphorus-free flame-retardant PBT engineering plastic material and a preparation method thereof, belonging to the field of polymer composite materials. According to the invention, a macromolecular coupling technology is adopted to significantly improve the mechanical properties of the material; specifically, a glycidyl methacrylate binary copolymer is used as a macromolecular coupling agent to improve the hot-mixing compatibility of the plastic, improve interface interaction between inorganic and organic raw materials, andstrengthen overall mechanical properties; and meanwhile, an inorganic filler vermiculite is adopted, so smoke density during material combustion and warping property during product forming are remarkably reduced. The mechanical property of the halogen-free flame-retardant reinforced PBT material provided by the invention is equivalent to or better than the mechanical property of a glass fiber reinforced bromine-antimony flame-retardant PBT material, and the halogen-free flame-retardant reinforced PBT material has lower smoke density and can realize replacement of halogen-containing materials by halogen-free materials in the field of electronics and electrical appliances.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a high-performance enhanced halogen-free and red phosphorus-free flame-retardant PBT engineering plastic material and a preparation method thereof. Background technique [0002] In recent years, electrical and electronic fire accidents have occurred frequently. According to statistics, at present, 26% of fires in my country are caused by electrical and electronic fires, and the average annual loss accounts for a high proportion, reaching 36%. According to the analysis, the reason for the fires of electronic appliances is that most of the bromine-antimony flame-retardant materials currently used have low glow wire ignition temperature (≤700°C) and low tracking index (≤200V), which leads to The electronic and electrical components are extremely easy to ignite; on the other hand, there is a large amount of toxic gas when the bromine-antimony flame-retardant material burns,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L27/06C08L35/02C08L33/14C08K13/06C08K9/02C08K3/34C08K5/3492C08K3/32C08K7/14B29B9/06B29C48/92
CPCC08L67/02B29B9/06B29C48/92C08L2201/02C08L2201/22B29C2948/92704B29C2948/9259C08L27/06C08K13/06C08K9/02C08K3/34C08K5/34928C08K3/32C08K7/14C08L35/02C08L33/14
Inventor 严欢焕
Owner 宁波华腾首研新材料有限公司
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