Flame-retardant glass fiber-reinforced HDPE/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 alloy materials, can solve the problems of unsuitable electricity use environment, low CTI value and GWIT value, etc., achieve high tracking index, improve oxidation resistance, and prevent decomposition effects

Inactive Publication Date: 2013-04-03

SHANGHAI SUNNY

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Some traditional methods are (GF+decabromodiphenylethane+antimony trioxide) compound system, (GF+brominated polystyrene+antimony trioxide) com...

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Abstract

The invention discloses a flame-retardant glass fiber-reinforced HDPE/PA66 alloy material with a high CTI value and a high GWIT value. The alloy material comprises the following components: by weight, 23 to 41% of HDPE, 22 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 240 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 CTI value, low precipitation performance, etc.

Technology Topic

OxidePrecipitation +6

Image

Examples

Experimental program(2)

Example

[0019] Examples 1~6

[0020] The raw materials of Examples 1 to 2 and their weight percentage content are shown in Table 1. The raw materials are weighed according to the weight percentage content; they are put into a high-mixer and mixed for 2 to 5 minutes, discharged, and then extruded with a twin screw Extrude and pelletize from the machine to obtain flame-retardant glass fiber reinforced HDPE/PA66 alloy material with high CTI value and high GWIT value; the processing temperature is 220-240℃, and the screw rotation speed is 30-40Hz; the specific processing conditions are shown in Table 2 As shown, the test results of the prepared samples are shown in Table 3.

Example

[0021] Comparative example 1~2

[0022] The raw materials of Comparative Examples 1 to 3 and their weight percentage content are shown in Table 1. The raw materials are weighed according to the weight percentage content; they are put into a high-mixer and mixed for 2 to 5 minutes, discharged, and then extruded with a twin screw Extrude and pelletize from the machine to obtain high CTI value, high GWIT flame-retardant glass fiber reinforced HDPE/PA66 alloy material; the processing temperature is 220-240℃, and the screw rotation is 30-40Hz; the specific processing conditions are shown in Table 2. The test results of the prepared samples are shown in Table 3.

[0023] It can be seen from Table 3 that the sample of the present invention has high glow wire temperature (GWIT), high tracking index (CTI), environmental protection, and comprehensive performance. It is widely used in low-voltage electronic capacitor shells, load disconnect switches, carbon Brush bracket, molded case circuit breaker.

[0024] Table 1

[0025]

[0026] Table 2

[0027]

[0028] table 3

[0029]

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Classification and recommendation of technical efficacy words

Improves antioxidant properties
Improve processing fluidity

Flame-retardant glass fiber-reinforced HDPE/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 alloy materials, can solve the problems of unsuitable electricity use environment, low CTI value and GWIT value, etc., achieve high tracking index, improve oxidation resistance, and prevent decomposition effects

AI-Extracted Technical Summary

Problems solved by technology

Abstract

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Examples

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Description & Claims & Application Information

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