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A kind of high-performance enhanced halogen-free red phosphorus flame-retardant PBT engineering plastic material and preparation method thereof

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

Active Publication Date: 2022-02-01
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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Examples

Experimental program
Comparison scheme
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%, evaporate in a vacuum, and obtain a processed Material, take the processed material and add glass fiber to mix according to the mass ratio of 1:8~15 to get 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, 2.16kg) of the obtained glycidyl methacrylate binary copolymer is greater than or equal to 100g / 10min.

[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 plastics is 0.8.

[0089] Specifically, the preparation of the mineral additives: take vermiculite and grind 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] S...

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PUM

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Abstract

The invention discloses a high-performance enhanced halogen-free and red phosphorus-free flame-retardant PBT engineering plastic material and a preparation method thereof, belonging to the field of polymer composite materials. The present invention adopts the macromolecular coupling technology to significantly improve the mechanical properties of the material. Specifically, the glycidyl methacrylate binary copolymer is used as the macromolecular coupling agent to improve the thermal mixing compatibility of the plastic and improve the inorganic and organic materials used. The interfacial interaction between raw materials strengthens the overall mechanical properties; at the same time, the use of inorganic filler vermiculite significantly reduces the smoke density when the material is burned and the warpage of the molded product. The mechanical properties of the halogen-free flame-retardant reinforced PBT material provided by the invention are comparable to or better than those of the glass fiber-reinforced bromine-antimony flame-retardant PBT material, and have lower smoke density, which can realize the application of halogen-free materials in the field of electronic appliances Alternative to halogenated materials.

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 Patents(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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