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Transparent weather-proof halogen-free flame retardant PC/PETG alloy material

An alloy material and weather resistance technology, applied in the field of polymer composite materials, can solve the problems of poor solvent resistance, no material weather resistance, low temperature performance, stress cracking, etc. sexual effect

Active Publication Date: 2019-04-16
SHANGHAI CHANGWEI JINCI ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polycarbonate material has high melt viscosity, poor fluidity, prone to stress cracking, and poor solvent resistance, prone to cracking and swelling in solvents, and poor surface scratch resistance. These shortcomings limit the application of PC to a certain extent. scope
In addition, the patent does not evaluate the weather resistance and low temperature performance of the material

Method used

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  • Transparent weather-proof halogen-free flame retardant PC/PETG alloy material
  • Transparent weather-proof halogen-free flame retardant PC/PETG alloy material
  • Transparent weather-proof halogen-free flame retardant PC/PETG alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6 and comparative example 1-5

[0064] Components and proportioning of table 1 embodiment 1-6 and comparative example 1-5

[0065]

[0066]

[0067] Preparation:

[0068] Mix the above raw material components in a high-speed mixer for 6-8 minutes, then extrude, cool, and granulate through a twin-screw extruder. 260°C, 250°C, 250°C, 240°C, 240°C, 240°C, 240°C, 240°C, 240°C. The resulting pellets are dried at 100°C for 4 hours and then injection molded into standard strips at 240-260°C.

Embodiment 7

[0069] Embodiment 7: Evaluation of implementation effect

[0070] The samples obtained in the above-mentioned Examples 1-6 and Comparative Examples 1-5 were tested for mechanical properties according to the American Society for Testing and Materials (ASTM) standard, according to the light transmittance and haze of the ASTM D1003 standard test material, and according to the UL94 standard test material Flame retardancy, according to GB / T 2423-2013 program A method to test the weather resistance of the material (40 cycles), after weathering, evaluate the gray level of discoloration according to ISO105-A02, solvent resistance test method: the injected color Soak the board in ethyl acetate / glacial acetic acid (1:1) for 15 minutes, and evaluate whether there is any obvious change. The test results are shown in Table 2 below:

[0071] The test result of table 2 embodiment 1-6 and comparative example 1-5

[0072]

[0073] The performance test results in Table 2 show that:

[0074...

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Abstract

The invention relates to the field of macromolecule composite materials, in particular to a transparent weather-proof halogen-free flame retardant PC / PETG alloy material and a preparation method thereof. The material is prepared from, by weight, 230-805 parts of siloxane copolymer PC resin, 100-300 parts of arylation block copolycarbonate, 50-300 parts of PETG, 10-50 parts of a flexibilizer, 30-100 parts of a halogen-free flame retardant and 5-20 parts of an assistant. The PC / PETG alloy material with good weather-proof performance, good halogen-free flame retardant performance and good low temperature performance is provided, by adding a phosphorus-silicon mixed flame retardant, the antiflaming cooperation effect is significant, and the mechanical performance can keep optimum balance; on the premise of not adding an ultraviolet additive, the material has excellent weather-proof performance and can be used outdoors; on the premise of not influencing the light transmittance rate of the halogen-free flame retardant PC / PETG alloy material, the material is toughened, and it is ensured that the material has good impacting performance.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a transparent weather-resistant halogen-free flame-retardant PC / PETG alloy material and a preparation method thereof. Background technique [0002] Polycarbonate is an engineering plastic with good transparency. It has excellent comprehensive properties and is widely used. Its products are widely used in electronic appliances, automobiles, machinery manufacturing, computers and other technical fields. However, polycarbonate material has high melt viscosity, poor fluidity, prone to stress cracking, and poor solvent resistance, prone to cracking and swelling in solvents, and poor surface scratch resistance. These shortcomings limit the application of PC to a certain extent. scope. In addition, the flame retardancy of unmodified polycarbonate is not enough, and it cannot meet the occasions that require high or very high flame retardancy. [0003] Polyethylene terephthala...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L75/04C08L85/02C08L83/04
CPCC08L69/00C08L2201/02C08L2201/08C08L2201/10C08L2201/22C08L2205/025C08L2205/035C08L2207/04C08L67/02C08L75/04C08L85/02C08L83/04
Inventor 朱爱华赵志刚程方清张毅岳同健胡同云蒲伟张龙
Owner SHANGHAI CHANGWEI JINCI ENG PLASTIC
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