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Chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and preparation method thereof

A technology of ignition temperature and polycarbonate, applied in the field of polymer materials, can solve the problem that the flame retardant system cannot meet the high glow wire non-ignition of PC composite materials, so as to improve the flame retardant effect, simple raw materials, and expand the application field Effect

Pending Publication Date: 2021-05-11
SHENZHEN FUHENG PLASTICS PIGMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single flame retardant system cannot meet the high glow wire non-ignition requirements of PC composites. By adding special bromine-based flame retardants, phosphorus-based flame retardants and silicon-based flame-retardant synergists, bromine / phosphorus / silicon flame-retardant The synergistic effect between the agents solves the requirement of high glow wire ignition temperature of PC composites

Method used

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  • Chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and preparation method thereof
  • Chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and preparation method thereof
  • Chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and preparation method thereof

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preparation example Construction

[0034] A method for preparing a chemically resistant transparent polycarbonate composite material with a high glow wire ignition temperature of the present invention comprises the following steps:

[0035] Step 1. Weigh each component successively according to the weight percentage of the above-mentioned raw materials, and take the PC resin, PCTG resin, brominated flame retardant, phosphorus flame retardant, silicon flame retardant synergist, antioxidant and The lubricant is mixed in a high-speed mixer for 5-10 minutes;

[0036] Step 2. Melting and extruding through a twin-screw extruder, cooling, and pelletizing to obtain a chemical-resistant transparent flame-retardant polycarbonate composite material with a high glow wire ignition temperature;

[0037] Wherein, the temperature setting of the twin-screw extruder in step 2 is: 200-230°C in the first zone, 230-250°C in the second zone, 230-250°C in the third zone, 230-250°C in the fourth zone, 230-250°C in the fifth zone, The...

Embodiment 1

[0046] According to the mass, put 47 parts of PC, 30 parts of PCTG, 15 parts of brominated flame retardant, 5 parts of phosphorus flame retardant, 2 parts of silicon flame retardant synergist, 0.5 part of antioxidant and 0.5 part of lubricant into the high speed In the mixer, mix at room temperature for 5 minutes and take it out; the above-mentioned uniformly mixed blend is melted and extruded through a twin-screw extruder, cooled, and granulated. The temperature of the twin-screw extruder is set at 200 ° C in the first zone. The second zone is 230°C, the third zone is 230°C, the fourth zone is 230°C, the fifth zone is 230°C, the sixth zone is 230°C, the seventh zone is 230°C, the eighth zone is 230°C, the head temperature is 230°C, and the screw speed of the extruder is controlled at 280r / min; and the obtained pellets were dried in a drying oven at a temperature of 100° C. for 3 hours to obtain a transparent PC material.

Embodiment 2

[0048]According to the mass, put 67.5 parts of PC, 17.5 parts of PCTG, 11.3 parts of brominated flame retardant, 3 parts of phosphorus flame retardant, 0.5 part of silicon flame retardant synergist, 0.1 part of antioxidant and 0.1 part of lubricant into the high speed In the mixer, mix at room temperature for 8 minutes and take it out; the above-mentioned uniformly mixed blend is melted and extruded through a twin-screw extruder, cooled, and granulated. The temperature of the twin-screw extruder is set at 215°C in the first zone. The second zone is 240°C, the third zone is 240°C, the fourth zone is 240°C, the fifth zone is 240°C, the sixth zone is 240°C, the seventh zone is 240°C, the eighth zone is 240°C, the head temperature is 240°C, and the extruder screw speed is controlled at 340r / min; and the obtained pellets were dried in a drying oven at a temperature of 105° C. for 4 hours to obtain a transparent PC material.

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Abstract

The invention discloses a chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and a preparation method thereof, which belong to the field of high polymer materials. According to the chemical-resistant transparent polycarbonate composite material with the high glowing filament ignition temperature and the preparation method, the specific PCTG resin is added into the PC resin, so that the chemical resistance of the PC resin is greatly improved, and by combining the addition of special brominated flame retardant, phosphorus flame retardant and silicon flame retardant synergists, the glowing filament ignition temperature of the composite material is obviously improved, and the flame retardant has small influence on the transparency of the composite material. The chemical-resistant transparent polycarbonate composite material with high glowing filament ignition temperature and the preparation method have the advantages of simple preparation process, low price, safety and reliability, and very high practical applicability, and are especially suitable for the fields of transparent outer covers of electronic and electrical appliances needing surface spraying or oily contact, and the like.

Description

[technical field] [0001] The invention relates to the field of polymer materials, in particular to a chemical-resistant transparent polycarbonate composite material with high glow wire ignition temperature and a preparation method. [Background technique] [0002] Due to its high light transmittance and excellent impact resistance, PC resin is usually the material of choice for the manufacture of transparent masks in the traditional electronic and electrical fields. However, with the improvement of the safety requirements for glow wire ignition temperature, traditional PC resin materials can no longer meet the new safety requirements for ignition temperature; in addition, the poor chemical resistance of traditional PC materials makes them unsuitable for chemical solvents and Contact with oily substances limits its application. Therefore, it is necessary to develop a chemically resistant transparent polycarbonate composite material with a high glow wire ignition temperature (...

Claims

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Application Information

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IPC IPC(8): C08L69/00C08L67/02C08L83/04C08K5/523C08K5/524C08K5/103
CPCC08L69/00C08L2205/035C08L2205/025C08L2201/10C08L2201/02C08L67/02C08L83/04C08K5/523C08K5/524C08K5/103
Inventor 黄春浪郑家豪张强刘明
Owner SHENZHEN FUHENG PLASTICS PIGMENT
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