Polycarbonate/polypropylene alloy material and preparation method thereof

A technology for polycarbonate and alloy materials, applied in the field of compatibilization and anti-aging polycarbonate/polypropylene alloy materials and its preparation, can solve the problem of compatibilizers disturbing the regular arrangement of crystallization or crystallite regions, polycarbonate/polypropylene Alloy mechanical strength reduction and other problems

Pending Publication Date: 2022-01-18
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese invention patents CN 106751656 A, CN 111218061 A, CN 111040412 A and CN111218061 A simply add polypropylene grafts or compatibilizers with multi-component copolymer structures to improve the polycarbonate/polypropylene blend alloy. Compatibility, but the addition of a large amount of c

Method used

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  • Polycarbonate/polypropylene alloy material and preparation method thereof
  • Polycarbonate/polypropylene alloy material and preparation method thereof
  • Polycarbonate/polypropylene alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Weigh the raw materials in the following weight ratio: polycarbonate-1:15 parts, polypropylene-1:70 parts, quaternary ammonium salt modified graphene oxide expanded rice particles-1:8 parts, antioxidant 0.3 parts, 0.3 parts of lubricant. Add the material composition into a high-speed mixer and mix it. After mixing, add it to a twin-screw extruder for extrusion and granulation. The processing temperature of the twin-screw extruder is 210°C, the screw speed is 200rpm, and the metering section of the twin-screw extruder pumps The vacuum degree of the vacuum device is -0.7 bar. After the granulation is completed, dry it at 100°C for 4 hours to fully remove the moisture. Then put the pellets into the injection molding machine for injection molding. Control the temperature of the injection mold at 80°C, the temperature of the barrel at 230°C, and the injection speed 50mm / s, injection pressure 60bar, cut out standard splines and templates.

Embodiment 2

[0070] Including the following raw materials in weight ratio: polycarbonate-1:25 parts, polypropylene-1:65 parts, quaternary ammonium salt modified graphene oxide expanded rice particles-2:8 parts, antioxidant 0.3 parts, lubricant 0.3 parts. Put the material composition into a high-speed mixer and mix it. After mixing, add it to a twin-screw extruder for extrusion and granulation. The processing temperature of the twin-screw extruder is 220°C, the screw speed is 200rpm, and the vacuum degree of the vacuum device in the twin-screw metering section is Within -0.7 bar, after granulation is completed, dry at 100°C for 4 hours to fully remove moisture, then put the pellets into the injection molding machine for injection molding, control the temperature of the injection mold at 80°C, the temperature of the barrel at 235°C, and the injection speed at 50mm / s , the injection pressure is 60bar, and the standard splines and templates are obtained by cutting.

Embodiment 3

[0072] Including the following raw materials in weight ratio: polycarbonate-1:65 parts, polypropylene-1:30 parts, quaternary ammonium salt modified graphene oxide expanded rice particles-1:8 parts, antioxidant 0.3 parts, lubricant 0.3 parts. Put the material composition into a high-speed mixer and mix it. After mixing, add it to a twin-screw extruder for extrusion and granulation. The processing temperature of the twin-screw extruder is 240°C, the screw speed is 300rpm, and the vacuum degree of the vacuum device in the twin-screw metering section is Within -0.7 bar, after the granulation is completed, dry it at 100°C for 4 hours to fully remove the water, then put the pellets into the injection molding machine for injection molding, control the temperature of the injection mold at 80°C, the temperature of the barrel at 240°C, and the injection speed at 50mm / s , the injection pressure is 60bar, and the standard splines and templates are obtained by cutting.

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Abstract

The invention relates to a compatibilized anti-aging polycarbonate/polypropylene alloy material and a preparation method thereof. The material comprises polycarbonate; polypropylene; graphene oxide compatibilization nanoparticles by quaternary ammonium salt modified by quaternary ammonium salt; and optionally, a processing aid. The alloy material disclosed by the invention not only has excellent aging resistance, but also can play a better compatibilization role without reducing the strength, and the flame retardant property can be improved.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a capacity-increasing and aging-resistant polycarbonate / polypropylene alloy material and a preparation method thereof. Background technique [0002] Polycarbonate is a thermoplastic engineering plastic with outstanding performance in all aspects. It has good mechanical properties, thermal properties, transparency and flame retardancy. Good, good electrical insulation, so it is favored by many industries. However, the processing viscosity of polycarbonate is high, and general polycarbonate products have defects such as being sensitive to notches and prone to stress cracking. [0003] Polypropylene is a general-purpose plastic with good abrasion resistance, repeated folding resistance and chemical stability. However, the impact performance drops sharply below -5°C, and it is brittle at low temperatures, with large molding shrinkage, insufficient wear resistance, low heat ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L69/00C08K9/04C08K3/04
CPCC08L23/12C08L69/00C08K2201/011C08L2201/08C08L2201/02C08K9/04C08K3/042
Inventor 王优浩石耀东祁先勇陈连清徐延伟睢国鹏李万庆
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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