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A kind of high CTI, low temperature ultra-tough flame retardant PC material and preparation method thereof

A low-temperature, super-tough technology, applied in the field of polymer materials, can solve problems such as insufficient insulation performance, and achieve the effect of improving low-temperature performance

Active Publication Date: 2022-03-25
GUANGDONG KUMHO SUNNY POLYMER MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of new energy vehicles, new energy vehicle charging piles have new requirements for materials. National standards put forward requirements for the physical properties, weather resistance, processing performance and electrical performance of charging materials, among which exterior decoration The material must first meet the environmental requirements, so there are higher requirements for the low-temperature performance of the material. Ordinary flame-retardant PC materials cannot meet the requirements at low temperatures.
Secondly, household appliances, charging piles, electronic connectors, etc. require materials to have good insulation properties to meet the requirements of safe use, while the CTI of ordinary flame-retardant PC materials is 175V, and its insulation properties cannot meet the current industry requirements for materials.

Method used

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  • A kind of high CTI, low temperature ultra-tough flame retardant PC material and preparation method thereof
  • A kind of high CTI, low temperature ultra-tough flame retardant PC material and preparation method thereof
  • A kind of high CTI, low temperature ultra-tough flame retardant PC material and preparation method thereof

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preparation example Construction

[0043] Described a kind of preparation method of high CTI, low temperature super tough flame retardant PC material, comprises the following steps:

[0044] A. Weigh PC resin, silicon-containing PC resin, phosphorus-based flame retardant, high CTI additive, antioxidant, lubricant and anti-dripping agent by weight percentage for use;

[0045] B, each component that is weighed in step A is mixed homogeneously;

[0046] C. After the mixture obtained in step B is extruded and granulated by twin screws, a high CTI, low temperature super tough flame retardant PC material is obtained.

[0047] By adding low molecular weight and medium particle size high insulating PTFE polymer as a high CTI additive in the system, the CTI of the material is improved, and phosphorus flame retardant is added to improve the flame retardant performance of the material, and high molecular weight PTFE is used as an anti-drip The agent can play the role of anti-drip and stable flame retardant, in addition, ...

Embodiment 1-12 and comparative example 1-3

[0064] A high CTI, low temperature super tough flame retardant PC material is prepared according to the following steps:

[0065] (1) according to weight percent calculation, each raw material is taken by weighing the raw material component content of table 1 for subsequent use;

[0066] (2) each component weighed in step (1) is added in the mixing tank and mixed to obtain a mixture;

[0067] (3) adding the mixture obtained in the step (2) into a twin-screw extruder, and carrying out twin-screw extrusion granulation, the extrusion temperature is 250 ° C, and the screw speed is 500 rpm to obtain a high CTI, low temperature super tough flame retardant PC material, and then injection-molded to make test specimens for performance testing.

[0068] Table 1 - Contents of raw material components

[0069]

[0070]

[0071] Note: " / " means that the ingredient is not contained.

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Abstract

The invention relates to the technical field of polymer materials, in particular to a high-CTI, low-temperature super-tough flame-retardant PC material and a preparation method thereof. A high-CTI, low-temperature super-tough flame-retardant PC material, calculated by weight percentage, includes the following components: PC resin 44-66%, silicon-containing PC resin 20-30%, phosphorus-based flame retardant 5-8%, high CTI additive 8~15%, antioxidant 0.1~1%, lubricant 0.1~1% and anti-dripping agent 0.2~1%; Wherein, described high CTI additive is PTFE of low molecular weight, described anti-dripping agent It is high molecular weight PTFE. The purpose of the present invention is to propose a high CTI, low-temperature super-tough flame-retardant PC material and a preparation method thereof. The prepared high-CTI, low-temperature super-tough flame-retardant PC material has a flame-retardant performance of 1.6mmV-0 level of UL94 , the CTI is increased to 500V, and the low-temperature toughness enables it to meet the needs of low-temperature environments.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a high CTI, low temperature super tough flame retardant PC material and a preparation method thereof. Background technique [0002] Flame retardant polycarbonate (PC) is a flame retardant material with excellent comprehensive properties, which meets the fire rating required by the state. However, with the development of new energy vehicles, new energy vehicle charging piles have new requirements for materials, and national standards have put forward requirements on the physical properties, weather resistance, processing properties and electrical properties of charging materials. The material must first meet the environmental requirements, so there is a higher requirement for the low temperature performance of the material, and the ordinary flame retardant PC material cannot meet the demand at low temperature. Secondly, household appliances, charging piles, electronic c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L27/18
CPCC08L69/00C08L2205/035C08L2205/025C08L2201/02C08L2203/20C08L27/18
Inventor 王莉辛敏强王正磊郭东平
Owner GUANGDONG KUMHO SUNNY POLYMER MATERIAL
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