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Black, flame-retardant and reinforced PBT material with high CTI (comparative tracking index) value and preparation method thereof

A technology of black and raw materials, which is applied in the field of high CTI value black flame-retardant reinforced PBT material and its preparation, and in the field of making relay shells. It can solve the problems of material CTI reduction, poor gloss, and expensive fluororesin, and overcome the low CTI value. , Good flame retardant effect, low price and cost effect

Active Publication Date: 2014-02-26
JIANGYIN LONGSHAN SYNTHETIC MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent application CN102120867A discloses a flame-retardant reinforced PBT composite material with high CTI and its production process, which uses decabromodiphenylethane and antimony trioxide to improve flame-retardant performance, and uses composite toughening agent and fluorine Resin is used to increase its strength and toughness, but the price of fluororesin is still expensive, making the product price still high
[0004] In addition, the known materials are all used for white home appliances. For the black PBT composite material, the CTI of the material is reduced due to the addition of carbon black.
At present, there is no report of CTI reaching more than 250V in black PBT materials
In addition, the surface of black PBT material is easy to fog and has poor gloss, which affects the appearance effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of high CTI value black flame-retardant reinforced PBT material, its raw material mass part is composed as follows:

[0040] PBT 39.5 parts

[0041] PE 4 parts

[0042] Toughener ST-2000 5 parts

[0043] Decabromodiphenylethane 11 parts

[0044] 2 parts antimony trioxide

[0045] 5 parts melamine

[0046] Nigrosine 3 parts

[0047] Antioxidant 1010 0.1 parts

[0048] Antioxidant 168 0.2 parts

[0049] Lubricant 1080 0.2 parts

[0050] 30 parts of glass fiber.

[0051] The preparation method is:

[0052] Blend the raw materials except glass fiber first, then add to the feeding hopper of the screw extruder, add glass fiber to the screw extruder at the same time, melt and extrude through the screw extruder, and granulate to obtain the finished product.

Embodiment 2

[0054] The difference between this embodiment and embodiment 1 is only that the mass proportions of each raw material are different, wherein:

[0055] 40 servings of PBT

[0056] PE 5 parts

[0057] Toughener ST-2000 4 parts

[0058] Decabromodiphenylethane 9 parts

[0059] 3 parts antimony trioxide

[0060] 2 parts melamine

[0061] Aniline black masterbatch 1 part

[0062] Antioxidant 1010 0.2 parts

[0063] Antioxidant 168 0.4 parts

[0064] Lubricant 1080 0.4 parts

[0065] 35 parts of glass fiber.

Embodiment 3

[0067] The difference between this embodiment and embodiment 1 is only that the mass proportions of each raw material are different, wherein:

[0068] 42 parts of PBT

[0069] PE 3 parts

[0070] Toughener ST-2000 5 parts

[0071] Decabromodiphenylethane 8 parts

[0072] 2 parts antimony trioxide

[0073] 4 parts melamine

[0074] Aniline Black Masterbatch 3

[0075] Antioxidant 1010 0.1 parts

[0076] Antioxidant 168 0.4 parts

[0077] Lubricant 1080 0.5 parts

[0078] 32 parts of glass fiber.

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Abstract

The invention relates to a black, flame-retardant and reinforced PBT material with CTI (high comparative tracking index) value,. The raw materials comprise PBT, PE, toughening agent ST-2000, 1,2-Bis(pentabromophenyl) ethane, antimony trioxide, melamine, aniline black masterbatch, antioxidant 1010, antioxidant 168, lubricant 1080 and glass fiber. A preparation method provided by the invention is as follows: the raw materials except the glass fiber are blended and then added into a feeding hopper of a screw extruder; when the glass fiber is added into the screw extruder, the raw materials are melt extruded and granulated to obtain the final product. The product prepared by the method provided by the invention overcomes the drawback of low CTI value of the black PBT material, has better flame retardant effect and is not liable to crack when used; moreover, the product has a CTI value of over 250V. The manufactured product has the advantages of no-fogging on the surface, good glossiness and low cost of the material price.

Description

technical field [0001] The invention relates to a black flame-retardant reinforced PBT material with a high CTI value and a preparation method thereof, which is mainly used for making relay casings and the like. It belongs to the technical field of polymer materials. Background technique [0002] Comparative Tracking Index (CTI): The highest voltage value at which the material surface can withstand 50 drops of electrolyte (0.1% ammonium chloride aqueous solution) without forming traces, in units for V. For products used in some electronic components such as relay casings, they have higher requirements on the CTI value, and the CTI value is required to reach or exceed 250V. The existing high CTI value enhanced PBT (polybutylene terephthalate) composite material, in order to ensure a higher CTI value, gave up the use of halogen-containing flame retardants with better flame retardant effects, and instead used additives A large number of halogen-free flame retardants are used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L23/06C08K13/04C08K5/03C08K3/22C08K5/3492C08K7/14C08J3/22
Inventor 赵文千赵俊雷
Owner JIANGYIN LONGSHAN SYNTHETIC MATERIAL
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