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Preparation method of phosphorus-based flame-retardant glass fiber reinforced PBT composite material

A composite material, phosphorus-based flame-retardant technology, applied in the field of polymer materials, can solve the problems of material mechanical performance deterioration, poor antibacterial performance, and large amount of addition

Inactive Publication Date: 2018-09-28
福建华塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the additive-type halogen-free flame retardants in today's society are faced with the disadvantages of large addition amount and significant deterioration of the mechanical properties of the material, and the antibacterial performance of the existing PBT materials is relatively poor

Method used

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  • Preparation method of phosphorus-based flame-retardant glass fiber reinforced PBT composite material

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preparation example Construction

[0056] The preparation method of PBT composite material of the present invention may further comprise the steps:

[0057] (1) Weigh the raw materials of each component by weight percentage;

[0058] (2) Dry the corresponding PBT resin in a vacuum oven at 120-140°C for 3-5 hours;

[0059](3) Add the corresponding glass fiber, filling material, phosphorus flame retardant, flame retardant synergist, aluminum hydroxide, diethylene glycol dimethyl benzoate, coupling agent, inorganic antibacterial agent, antibacterial Oxygen and other processing aids are placed in another vacuum drying oven, the temperature is controlled at 40-50°C, and the time is 3-4h;

[0060] (4) Pour the component materials described in steps (2) and (3) into a mixer for stirring and mixing at room temperature, first stir at a stirring speed of 200r / min for 2 minutes, and then stir at a stirring speed of 500r / min 4min obtains premixture;

[0061] (5) Put the premix in the hopper of the twin-screw extruder an...

Embodiment 1

[0063] A phosphorus-based flame-retardant glass fiber-reinforced PBT composite material consists of the following components by weight percentage:

[0064] PBT 49%

[0065] Fiberglass 19%

[0066] Filling material 5%

[0067] Phosphorus flame retardant 9%

[0068] Flame Retardant Synergist 6%

[0069] Aluminum hydroxide 3.5%

[0070] Diethylene glycol di-m-toluate 3.5%

[0071] Coupling agent 1.2%

[0072] Inorganic antibacterial agent 0.8%

[0073] Antioxidant 0.9%

[0074] Other processing aids 2.1%

[0075] The preparation method of the above-mentioned phosphorus-based flame-retardant glass fiber reinforced PBT composite material specifically includes the following steps:

[0076] (1) Weigh the raw materials of each component by weight percentage;

[0077] (2) Dry the corresponding PBT resin in a vacuum oven at 130°C for 4 hours;

[0078] (3) Add the corresponding glass fiber, filling material, phosphorus flame retardant, flame retardant synergist, aluminum hydro...

Embodiment 2

[0082] A phosphorus-based flame-retardant glass fiber-reinforced PBT composite material consists of the following components by weight percentage:

[0083] PBT 58%

[0084] Fiberglass 12%

[0085] Filling material 7%

[0086] Phosphorus flame retardant 7%

[0087] Flame Retardant Synergist 4%

[0088] Aluminum hydroxide 5%

[0089] Diethylene glycol di-m-toluate 4%

[0090] Coupling agent 0.6%

[0091] Inorganic antibacterial agent 0.6%

[0092] Antioxidant 0.7%

[0093] Other processing aids 1.1%

[0094] The preparation method of the above-mentioned phosphorus-based flame-retardant glass fiber reinforced PBT composite material specifically includes the following steps:

[0095] (1) Weigh the raw materials of each component by weight percentage;

[0096] (2) Dry the corresponding PBT resin in a vacuum oven at 140°C for 3 hours;

[0097] (3) Add the corresponding glass fiber, filling material, phosphorus flame retardant, flame retardant synergist, aluminum hydroxide...

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Abstract

The invention provides a phosphorus-based flame-retardant glass fiber reinforced PBT composite material, which comprises, by weight, 35-60% of PBT, 8-26% of glass fiber, 3-8% of a filling material, 6-12% of a phosphorus-based flame retardant, 3-8% of a flame-retardant synergist, 2-6% of aluminum hydroxide, 2-5% of diethylene glycol di m-methyl benzoate, 0.5-2% of a coupling agent, 0.5-1% of an inorganic antibacterial agent, 0.6-1.2% of an antioxidant, and 1-3% of other processing aids, wherein the intrinsic viscosity of the PBT is 0.7-1.2 dl / g, and the glass fiber is an alkali-free glass fiberwith a monofilament diameter of 7-18 [mu]m. According to the present invention, the prepared PBT composite material has advantages of good flame retarding effect, excellent mechanical property, excellent electrical property, excellent antibacterial property and excellent processing property.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a method for preparing a phosphorus-based flame-retardant glass fiber-reinforced PBT composite material. Background technique [0002] Polybutylene terephthalate, referred to as PBT, is a saturated polyester formed by esterification and condensation of terephthalic acid and aliphatic diols. Its structural features include benzene rings, ester chains and ester groups connecting the two. group. Due to the high geometric regularity and rigid part of the molecule, polybutylene terephthalate has high mechanical strength, good elasticity, wear resistance, chemical resistance and excellent electrical properties (high temperature and humid environment It still maintains good electrical insulation properties), and because there are no side chains in the molecule, the junction structure is symmetrical and meets the requirements of close packing, so that this polymer has a high d...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K9/12C08K3/08C08K7/14C08K3/22C08K5/103
CPCC08K3/08C08K3/22C08K5/103C08K7/14C08K9/12C08K13/06C08K2003/0806C08K2003/085C08K2003/0893C08K2003/2227C08K2201/003C08L67/02
Inventor 蔡鹏飞林建民
Owner 福建华塑新材料有限公司
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