Multi-functional polycarbonate modified material and preparation method thereof

A technology of polycarbonate and modified materials, applied in the field of multifunctional polycarbonate modified materials and their preparation, can solve the problems of high cost, single excellent performance, can not meet the long-term outdoor use, etc., and achieves low cost and high resistance. The effect of low temperature impact performance and simple preparation process

Active Publication Date: 2021-08-13
NANJING UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the transparency of the random copolymerized polycarbonate is not good, and it cannot meet the long-term outdoor use, and the cost is obviously higher than that of PC resin.
[0005] To sum up, the modified PC materials currently used in the market usually have a single excellent performance or two good properties, such as flame retardant function, weather resistance function, transparent / flame retardant function, low temperature resistance / flame retardant function, etc. , there is no modified PC material that is transparent, flame retardant, weather resistant, and high and low temperature impact resistant.

Method used

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  • Multi-functional polycarbonate modified material and preparation method thereof
  • Multi-functional polycarbonate modified material and preparation method thereof
  • Multi-functional polycarbonate modified material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Raw material formula (mass ratio, parts): powdery PC resin (load 1200g, temperature 300°C when MFR=5.0g / 10min) 80, powdery PC-co-PDMS resin (load 1200g, temperature 300°C when MFR=10.0g / 10min, PDMS content 40wt%) 20, potassium perfluorobutane sulfonate flame retardant (purity 99.8%, particle size 0.5 μ m) 0.1, ultraviolet light absorber UV 5411 0.3, antioxidant B900 0.1, lubricant 0.2, Dibenzoyl peroxide 0.1, antioxidant B215 0.1.

[0039] Preparation Process:

[0040]Preparation of polycarbonate / polydimethylsiloxane copolymer mixture: First, add PC-co-PDMS and benzoyl peroxide in a 100-liter high-speed mixer under the condition of a stable temperature control of 90 ° C, and replace with nitrogen Among them, the air is 5 minutes; then the rotation speed is at a low speed (below 500rpm) and stirred for 1 minute, and the high-speed stirring is started (that is, above 1000rpm for 3 minutes) to rapidly raise the temperature to 110°C and keep the temperature constant; then...

Embodiment 2

[0046] Raw material formula (mass ratio, parts): powdery PC resin (load 1200g, temperature 300 ℃ when MFR = 10.0g / 10min) 75, powdery PC-co-PDMS resin (load 1200g, temperature 300 ℃ when MFR = 10.0g / 10min, PDMS content 30wt%) 25, potassium perfluorobutane sulfonate flame retardant (purity 99.8%, particle size 1μm) 0.08, ultraviolet light absorber UV 234 0.5, antioxidant B900 0.3, lubricant 0.1, over Dibenzoyl oxide 0.05, antioxidant B215 0.05.

[0047] Preparation Process:

[0048] Preparation of the mixture of polycarbonate / polydimethylsiloxane copolymer: First, add PC-co-PDMS and benzoyl peroxide in a 100-liter high-speed mixer under the condition that the temperature can be stably controlled at 95°C, and replace with nitrogen Among them, the air is 5 minutes; then the rotation speed is at a low speed (below 500rpm) and stirred for 1 minute, and the high-speed stirring is started (that is, above 1000rpm) for 3 minutes to quickly raise the temperature to 115°C and keep the t...

Embodiment 3

[0054] Raw material formula (mass ratio, parts): powdery PC resin (load 1200g, temperature 300 ℃ when MFR = 15.0g / 10min) 70, powdery PC-co-PDMS resin (load 1200g, temperature 300 ℃ when MFR = 6.0g / 10min, PDMS content 25wt%) 30, potassium perfluorobutanesulfonate flame retardant (purity 99.8%, particle size 1.5μm) 0.09, ultraviolet light absorber UV 5411 0.3, UV 2340.2, antioxidant B900 0.2, lubrication agent 0.15, dibenzoyl peroxide 0.15, antioxidant B215 0.1.

[0055] Preparation Process:

[0056] Preparation of polycarbonate / polydimethylsiloxane copolymer mixture: First, add PC-co-PDMS and benzoyl peroxide to a 100-liter high-speed mixer under the condition of a stable temperature of 85 ° C, and replace with nitrogen Among them, the air is 5 minutes; then the rotation speed is at a low speed (below 500rpm) and stirred for 1 minute, and the high-speed stirring is started (that is, above 1000rpm for 3 minutes) to quickly raise the temperature to 105°C and keep the temperatur...

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Abstract

The invention discloses a multi-functional polycarbonate modified material which has the advantages of transparency, flame retardance, weather resistance and high and low temperature impact resistance, and can meet the requirements of high-end electronic and electrical products in certain outdoor specific harsh occasions. The multi-functional polycarbonate modified material is prepared from the following raw materials in parts by mass: 60 to 80 parts of polycarbonate, 20 to 40 parts of a mixture of polycarbonate / polydimethylsiloxane copolymer, 0.08 to 0.1 parts of a flame retardant, 0.3 to 0.5 parts of an ultraviolet light absorber, 0.1 to 0.3 parts of an antioxidant B900 and 0.1 to 0.2 parts of a lubricant.

Description

technical field [0001] The invention relates to an engineering plastic and a preparation method thereof, in particular to a multifunctional polycarbonate modified material and a preparation method thereof. Background technique [0002] Polycarbonate (Polycarbonate, referred to as PC) originally refers to the general term for a class of polymers containing carbonate groups in the main chain of the molecule. According to the structure of the ester group in the main chain of the macromolecule, it can be further divided into aliphatic, aromatic, Aliphatic - aromatic and other types of polycarbonate. Due to the good flexibility of the main chain and low intermolecular force of aliphatic, aliphatic-aromatic polycarbonate and other types of polycarbonate, the mechanical properties of this type of polycarbonate material are low, which limits its application in engineering plastics and other aspects. At present, only aromatic polycarbonate has obtained industrial production and prac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L83/10C08K5/14C08K5/42
CPCC08L69/00C08L2201/02C08L2201/10C08L2201/08C08L83/10C08K5/14C08K5/42
Inventor 张军贾宇包建宁陈浩柴瑞丹毛泽鹏钱建培苏克顺杨张滨倪桓张亚文
Owner NANJING UNIV OF TECH
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