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Flame-retardant glass fiber-reinforced PA6/PA66 alloy material with high CTI value and high GWIT value

A technology of alloy materials and glass fiber, which is applied in the field of flame-retardant glass fiber reinforced alloy materials, can solve the problems of low CTI value and GWIT value, unsuitable electricity environment, etc., achieve high tracking index and improve oxidation resistance , the effect of comprehensive performance balance

Inactive Publication Date: 2015-06-03
SHANGHAI SUNNY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some traditional methods are (GF+decabromodiphenylethane+antimony trioxide) compound system, (GF+brominated polystyrene+antimony trioxide) compound system, but the CTI value and GWIT of these compound systems The value is not high, not suitable for high-demand electricity environment

Method used

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  • Flame-retardant glass fiber-reinforced PA6/PA66 alloy material with high CTI value and high GWIT value
  • Flame-retardant glass fiber-reinforced PA6/PA66 alloy material with high CTI value and high GWIT value
  • Flame-retardant glass fiber-reinforced PA6/PA66 alloy material with high CTI value and high GWIT value

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6

[0036] High CTI value, high GWIT value environment-friendly flame-retardant glass fiber reinforced PA6 / PA66 alloy material, including each component of weight percentage content shown in Table 1; Its preparation method is as follows:

[0037] (1) Weigh the raw materials according to the weight percentage content shown in Table 1, put them in a high-mixer and mix them for 2 to 5 minutes, and discharge; the compound flame retardant masterbatch in Table 1 includes the following components in mass percentage content : BPS: 50%; Magnesium hypophosphite: 25%; Talc powder: 25%;

[0038] (2) Add the above-mentioned mixed raw materials into a twin-screw extruder, extrude and granulate, and obtain the high CTI value, high GWIT value environmental protection flame-retardant glass fiber reinforced PA6 / PA66 alloy material; the twin-screw extruder The parameters such as extrusion temperature and screw revolutions are shown in Table 2.

[0039] The raw material formula of table 1 comparativ...

Embodiment 7

[0044] Embodiment 7, performance test

[0045] Using ASTM standards, performance tests and comparisons were performed on the PA6 / PA66 alloy composition samples prepared in Examples 1-6 and Comparative Examples 1-5. The test performance comparison is shown in Table 3:

[0046] table 3

[0047]

[0048]

[0049] As can be seen from Table 3, compared with Comparative Examples 1, 2, and 3, the sample of the present invention has higher glow wire temperature (GWIT), higher tracking index (CTI), environmental protection, balanced comprehensive performance, and wide Used in low-voltage electronic capacitor housings, load break switches, carbon brush holders, molded case circuit breakers.

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Abstract

The invention discloses a flame-retardant glass fiber-reinforced PA6 / PA66 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 22.5 to 41% of PA6, 22.5 to 41% of PA66, 6 to 20% of a compound fire retardant, 3 to 15% of antimonony oxide, 20 to 30% of a glass fiber, 2 to 10% of a compatilizer, 0.1 to 1% of an anti-oxidant and 0.1 to 1% of an oxide. The invention also relates to a preparation method for the alloy material, and the method comprises the following steps: weighing the components in proportion, adding the weighed components into a high-speed mixer for mixing for 2 to 5 min, then carrying out discharging and finally carrying out extrusion granulation in a twin-screw extruder, wherein processing temperature is 220 to 255 DEG C and screw revolution is 30 to 40 Hz. Compared with the prior art, the alloy material provided by the invention has the advantages of a high glow wire temperature, a high tracking index, environment-friendliness and balanced comprehensive properties and can be extensively used for low-voltage electronic capacitor shells, load break switches, carbon brush supports and molded case circuit breakers.

Description

technical field [0001] The invention relates to a flame-retardant glass fiber-reinforced alloy material, in particular to a flame-retardant glass fiber-reinforced PA6 / PA66 alloy material with high CTI value and high GWIT value. Background technique [0002] Nylon (Nylon), Chinese name polyamide, English name Polyamide (referred to as PA), is a general term for thermoplastic resins containing repeated amide groups -[NHCO]- on the main molecular chain. Its name depends on the specific number of carbon atoms in the synthetic monomer, such as: nylon-6, 66, 1010, 610. It has high crystallinity, obvious melting point, high surface hardness, wear resistance, small friction coefficient, self-lubrication and noise reduction; good low temperature performance, and certain heat resistance (can be used below 100 degrees); non-toxic, Odorless, mildew free, self-extinguishing, good weather resistance, but poor dyeability. In the 21st century, electronic, electrical and communication home...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/02C08L77/06C08L25/06C08L51/06C08K13/06C08K9/06C08K7/14C08K3/22C08K3/32C08K3/34C08K5/13B29B9/06B29C47/92B29C48/92
CPCB29B7/46B29B7/72B29B7/7461B29B7/90B29B9/06B29B9/12B29B9/14B29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895C08K3/22C08K3/2279C08K3/32C08K5/13C08K9/06C08L25/18C08L51/08C08L77/02C08L77/06C09K21/14
Inventor 郭建鹏黄晓明
Owner SHANGHAI SUNNY
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