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A kind of heat-resistant oxygen aging low-precipitation MCA flame-retardant pa66 composite material and its application

A technology of PA66 and composite materials, which is applied in the field of heat-resistant oxygen aging and low-precipitation MCA flame-retardant PA66 composite materials. It can solve the problems of product appearance defects, large precipitation tendency, and affecting processing, etc., and achieve improved flame-retardant stability and low precipitation tendency. , the effect of prolonging the service life

Active Publication Date: 2022-03-22
合诚技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the effect of temperature and humidity, the added small molecule carboxylic acid has a large tendency to precipitate and is easy to precipitate during the placement process, causing appearance defects of the product or affecting subsequent processing (such as silk screen printing)

Method used

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  • A kind of heat-resistant oxygen aging low-precipitation MCA flame-retardant pa66 composite material and its application
  • A kind of heat-resistant oxygen aging low-precipitation MCA flame-retardant pa66 composite material and its application
  • A kind of heat-resistant oxygen aging low-precipitation MCA flame-retardant pa66 composite material and its application

Examples

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Embodiment 1

[0041] Example 1 Preparation of heat-resistant oxygen aging low-precipitation MCA flame-retardant PA66 composite material

[0042] Weigh the raw materials of Groups 1 to 6 according to Table 1 below, and extrude and granulate them through a twin-screw extruder. Among them, the premixed PA66 resin, MCA flame retardant, antioxidant, flame retardant stabilizer and boric acid The zinc mixture is added from the main feeding port of the twin-screw extruder, and the hollow glass microspheres are added from the side feeding port of the extruder. Adjust the processing technology so that the hollow glass microspheres are evenly dispersed and less broken during processing; the mixture is melted, blended and extruded by a twin-screw extruder, then cooled, air-dried, and pelletized to obtain heat-resistant, oxygen-aging and low-precipitation MCA flame-retardant PA66 composite material.

[0043] Table 1: Raw material components and dosage (unit: kg) used to prepare the MCA flame-retardant ...

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Abstract

The invention discloses a heat-resistant, oxygen-aging and low-precipitation MCA flame-retardant PA66 composite material and an application thereof. The composite material includes 85-91 parts of PA66 resin, 8-12 parts of MCA flame retardant, 0.6-1.0 parts of hollow glass microspheres, 0.3-0.6 parts of antioxidant, 0.2-0.3 parts of flame-retardant stabilizer and 0.3-0.3 parts of zinc borate 0.6 parts. The present invention uses PA66 as the resin matrix, adopts common MCA flame retardant in the market, combines hollow glass microspheres, anhydrous zinc borate and stearate as flame retardant stabilizers, makes the composite material reach UL94V0 level with less precipitation, and effectively improves The printing effect of the final product; by adding a high-efficiency compound anti-oxidation system, the performance retention rate of the material in a high-temperature environment is improved. This material is widely used in the fields of electronic appliances and connectors, especially the field of terminal blocks.

Description

technical field [0001] The invention belongs to the technical field of polyamide 66 resin modification, and in particular relates to a heat-resistant oxygen-aging low-precipitation MCA flame-retardant PA66 composite material and an application thereof. Background technique [0002] Polyamide 66 (PA66) resin has excellent mechanical and physical properties, and is widely used in machinery manufacturing, electric tools, electronic appliances, transportation and other fields. However, because PA66 resin can only reach the V-2 flame retardant grade, and the molten droplets during the combustion process are likely to cause secondary ignition and cause a larger fire, which greatly limits its application fields, especially in industrial / automotive electronic appliances In the field, these products are in direct or indirect contact with the electricity environment, and leakage, short circuit, arc, etc. in the circuit are likely to cause fire. Therefore, in practical applications, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L77/06C08K13/04C08K7/28C08K5/3492C08K3/38C08K5/098
CPCC08K13/04C08K7/28C08K5/34928C08K3/38C08K5/098C08K2003/387C08K2201/011C08L77/06
Inventor 张宇诸泉蒋文真
Owner 合诚技术股份有限公司
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