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High-CTI and low-temperature super-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: 2020-05-19
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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  • High-CTI and low-temperature super-tough flame-retardant PC material and preparation method thereof
  • High-CTI and low-temperature super-tough flame-retardant PC material and preparation method thereof
  • High-CTI and low-temperature super-tough flame-retardant PC material and preparation method thereof

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preparation example Construction

[0043] The method for preparing a high-CTI, low-temperature super-tough flame-retardant PC material includes the following steps:

[0044] A. Weigh PC resin, silicon-containing PC resin, phosphorous flame retardant, high CTI additives, antioxidants, lubricants and anti-dripping agents by weight percentage for use;

[0045] B. Mix the components weighed in step A uniformly;

[0046] C. After pelletizing the mixture obtained in step B through twin-screw extrusion, a high-CTI, low-temperature super-tough flame-retardant PC material is obtained.

[0047] By adding low-molecular-weight and medium-particle high-insulating PTFE polymers as high-CTI additives to the system, the CTI of the material is improved, and phosphorus-based flame retardants are added to improve the flame-retardant performance of the material, and high-molecular-weight PTFE is used as anti-drip The agent can play the role of preventing dripping and stabilizing flame retardant. In addition, adding silicon-containing PC r...

Embodiment 1-12 and comparative example 1-3

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

[0065] (1) Calculated according to weight percentage, each raw material is weighed according to the content of raw material components in Table 1 for use;

[0066] (2) Add the components weighed in step (1) into the mixing tank and mix evenly to obtain a mixture;

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

[0068] Table 1-Raw material component content

[0069]

[0070]

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

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Abstract

The invention relates to the technical field of high polymer materials, in particular to a high-CTI and low-temperature super-tough flame-retardant PC material and a preparation method thereof. The high-CTI and low-temperature super-tough flame-retardant PC material comprises the following components in percentage by weight: 44-66% of PC resin, 20-30% of silicon-containing PC resin, 5-8% of a phosphorus flame retardant, 8-15% of a high-CTI additive, 0.1-1% of an antioxidant, 0.1-1% of a lubricant and 0.2-1% of an anti-dripping agent, wherein the high CTI additive is PTFE with low molecular weight, and the anti-dripping agent is PTFE with high molecular weight. The invention aims to provide a high-CTI low-temperature super-tough flame-retardant PC material and a preparation method thereof.According to the prepared high-CTI and low-temperature super-tough flame-retardant PC material, the flame retardant property reaches 1.6 mmV-0 level of UL94, CTI is improved to 500 V, and meanwhile the PC material can meet the use requirement of a low-temperature environment due to low-temperature toughness.

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 performance and meets the fire rating required by the country. It has been widely used in indoor electrical appliances and other fields, such as monitoring enclosures, liquid crystal displays, household appliances and other products. However, with the development of new energy vehicles, new energy vehicle charging piles have new requirements for materials. 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 are higher requirements for the low temperature performance of t...

Claims

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Application Information

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