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A kind of high fluidity environment-friendly flame-retardant PC material and preparation method thereof

A high-fluidity, environmentally friendly technology, applied in the field of composite materials, can solve the problems of poor flame-retardant effect and poor processing fluidity, and achieve the effects of improving processing fluidity, high fluidity, and inhibiting PC combustion

Active Publication Date: 2021-04-06
JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a PC material with both high fluidity and excellent flame retardant effect and its preparation method in order to overcome the defects of poor processing fluidity and poor flame retardant effect of existing PC composite materials

Method used

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  • A kind of high fluidity environment-friendly flame-retardant PC material and preparation method thereof
  • A kind of high fluidity environment-friendly flame-retardant PC material and preparation method thereof

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Embodiment approach

[0027] In the present invention, the type of the antioxidant is not particularly limited, and it may be various existing auxiliary agents capable of improving the oxidation resistance of PC materials. According to a preferred embodiment of the present invention, the antioxidant is a composite antioxidant containing a primary antioxidant and an auxiliary antioxidant, wherein the primary antioxidant is a hindered phenolic antioxidant (such as 1010), the auxiliary antioxidant is a phosphite antioxidant (such as 168 or 686). In addition, the weight ratio of the primary antioxidant to the secondary antioxidant is preferably 1:(1-3).

[0028] In the present invention, the type of the stabilizer is not particularly limited, and may be various existing additives capable of improving the stability of PC materials, preferably metal borides. Wherein, specific examples of the metal boride include but are not limited to: at least one of zinc borate, calcium borate and aluminum borate.

...

Embodiment 1

[0032] PC resin (bisphenol A polycarbonate, whose melt flow rate is preferably 6g / 10min at a temperature of 300°C and a load of 10kg), organosilicon compound (polymethylsiloxane), synergistic barrier Combustion agent (ammonium polyphosphate), ethylene-propylene copolymer (viscosity at 190°C is 7500mPa·s, content of ethylene structural unit is 10wt% and content of propylene structural unit is 90wt%), antioxidant (1010 and 168 according to the mass ratio of 1:2 mixture) and stabilizer (zinc borate) according to the ratio of Table 1 into the high-speed mixer at a speed of 5500r / min premixed evenly; Twin-screw extruder, all component materials are sheared, melted, blended and extruded in a parallel twin-screw extruder to obtain strands, wherein the processing temperatures of each section of the twin-screw extruder are 180°C, 200°C, and 210°C . Cut into pellets, and then dry the obtained composite particles in a blast dryer at 110°C for 5 hours to obtain a high-fluidity, environme...

Embodiment 2

[0034] PC resin (bisphenol A polycarbonate, whose melt flow rate is preferably 7g / 10min at a temperature of 300°C and a load of 10kg), an organosilicon compound (cage-shaped octaphenylsilsesquioxane ( OPS)), synergistic flame retardant (magnesium hydroxide), ethylene-propylene copolymer (viscosity at 190°C is 7500mPa·s, content of ethylene structural unit is 12wt% and content of propylene structural unit is 88wt%) , antioxidant (1010 and 168 according to the mixture of mass ratio 1:2) and stabilizer (calcium borate) are added in the high-speed mixer according to the proportioning of Table 1 and premixed evenly under the rotating speed of 5500r / min; The material is fed into the parallel twin-screw extruder from the main feeding hopper, and all the component materials are sheared, melted, blended and extruded in the parallel twin-screw extruder to obtain a strip, wherein the processing temperature of each section of the twin-screw extruder is 180 ℃, 200°C, 210°C, 220°C, 230°C, 2...

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Abstract

The invention belongs to the field of composite materials, and discloses a high-fluidity environment-friendly flame-retardant PC material and a preparation method thereof. The high-fluidity environment-friendly flame-retardant PC material is composed of PC resin, organosilicon compound, synergistic flame retardant, ethylene-propylene copolymer and optional antioxidant and stabilizer, and the PC resin, organosilicon The weight ratio of the compound, the synergistic flame retardant and the ethylene-propylene copolymer is (15-1000):(0.2-100):(0.2-50):1. The PC composite material provided by the invention has both high fluidity and excellent flame retardant effect, and has wide application prospects in the fields of automobiles, electronic appliances, medical care, building materials packaging and the like.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a high-fluidity environment-friendly flame-retardant PC material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is a kind of linear polyester. Its molecular chain contains both soft carbonate chain and rigid benzene ring structure, so it shows good optical transparency and creep resistance in macroscopic view. , cold resistance and thermal stability, it is currently widely used in the fields of automobiles, electronic appliances, medical and health care, building materials packaging, etc. It is one of the five fastest-growing engineering plastics. [0003] Since the oxygen index of pure PC with different molecular chain structures is 23-26%, it is a self-extinguishing material, so it must be modified for flame retardancy. Although the traditional halogenated flame retardant has a better flame retardant effect, the material will p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L23/16C08L83/04C08K3/32C08K5/098C08K5/053C08K3/22
CPCC08K2003/2224C08K2003/2227C08K2003/323C08L69/00C08L2201/02C08L2205/03C08L23/14C08L83/04C08K3/32C08K3/22C08K5/053C08K5/098
Inventor 池哲明申应军高翔刘荣亮张丰李德燊王伟
Owner JINYOUNG XIAMEN ADVANCED MATERIALS TECH CO LTD
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