Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof

A glass fiber and polycarbonate technology, which is applied in the field of high gloss and high flow glass fiber reinforced polycarbonate composite material and its preparation, can solve the problems of poor molding processability, poor processing fluidity, high viscosity of polycarbonate, etc. Overcome poor surface quality, good processing fluidity and good surface quality

Inactive Publication Date: 2015-06-03
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, polycarbonate has high viscosity, poor molding and processing performance, and the processing fluidity is even worse after adding glass fiber, which is prone to glass fiber exposure, which seriously affects the apparent quality of the product and limits the application of glass fiber reinforced polycarbonate materials.

Method used

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  • Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof
  • Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof
  • Glass fiber reinforced polycarbonate (PC) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The content of each component in parts by weight:

[0028]

[0029] The ingredients are carried out according to the above weight parts, PC resin, PETG resin, toughening agent, inorganic filler, coupling agent, flow modifier and antioxidant are put into a high-speed mixer at a mixing temperature of 60°C and a mixing time of 8 minutes. The speed is 500rmp. After high-speed mixing, the material is fed to the hopper of the extruder. The glass fiber is added at the glass fiber port of the extruder. , 270 ℃, 275 ℃, 265 ℃, the main engine speed is 20 Hz, extruded and pelletized by a twin-screw extruder, and drawn into pellets to obtain a high-gloss and high-flow glass fiber reinforced polycarbonate composite material.

[0030] The properties of the samples in this example are: tensile strength of 84.1MPa, bending strength of 150.4MPa, and notched impact strength of simply supported beams of 15KJ / m 2 , the melt index is 30.1g / 10min, the surface of the sample has no floatin...

Embodiment 2

[0032] The content of each component in parts by weight:

[0033]

[0034] The ingredients are carried out according to the above-mentioned parts by weight. PC resin, PETG resin, toughening agent, inorganic filler, coupling agent, flow modifier and antioxidant are put into a high-speed mixer at a mixing temperature of 70 ° C and a mixing time of 5 min. The speed is 600rmp. After high-speed mixing, the material is fed to the hopper of the extruder. The glass fiber is added at the glass fiber port of the extruder. , 260 ℃, 268 ℃, 270 ℃, the main engine speed is 30 Hz, extruded and pelletized by a twin-screw extruder, and pulled into pellets to obtain a high-gloss and high-flow glass fiber reinforced polycarbonate composite material.

[0035] The properties of the samples in this example are: tensile strength of 95MPa, bending strength of 166.2MPa, and notched impact strength of simply supported beams of 18KJ / m 2 , the melt index is 25.6g / 10min, the surface of the sample has ...

Embodiment 3

[0037] The content of each component in parts by weight:

[0038]

[0039] The ingredients are carried out according to the above-mentioned weight parts. PC resin, PETG resin, toughening agent, inorganic filler, coupling agent, flow modifier and antioxidant are put into a high-speed mixer at a mixing temperature of 90 ° C and a mixing time of 3 minutes. The speed is 700rmp. After high-speed mixing, the material is fed to the hopper of the extruder. The glass fiber is added at the glass fiber port of the extruder. , 260 ℃, 268 ℃, 270 ℃, the main engine speed is 40 Hz, extruded and pelletized by a twin-screw extruder, and pulled into pellets to obtain a high-gloss and high-flow glass fiber reinforced polycarbonate composite material.

[0040] The properties of the samples in this example are: tensile strength of 105.8MPa, bending strength of 172.4MPa, and notched impact strength of simply supported beams of 20KJ / m 2 , the melt index is 35g / 10min, the surface of the sample ha...

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Abstract

The invention discloses a glass fiber reinforced polycarbonate (PC) composite material with high gloss and high flowability. The glass fiber reinforced PC composite material is prepared from the following components in parts by weight: 100 parts of PC resin, 3-20 parts of polyethylene terephthalate glycol (PETG) resin, 15-50 parts of glass fiber, 1-8 parts of toughening agents, 1-5 parts of organic fillers, 0.5-2 parts of coupling agents, 1.0-4.0 parts of flow modifiers and 0.3-1.0 part of antioxidants. A preparation method comprises the following steps: uniformly mixing 100 parts of PC resin, 3-20 parts of PETG resin, 1-8 parts of toughening agents, 1-5 parts of organic fillers, 0.5-2 parts of coupling agents, 1.0-4.0 parts of flow modifiers and 0.3-1.0 part of antioxidants, then adding the obtained mixed materials and 15-50 parts of glass fiber to a screw extruder and carrying out extrusion pelletizing and carrying out stranding pelletizing to prepare the glass fiber reinforced PC composite material. The material has the advantages of easiness in forming, good processing flowability and good surface quality.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-gloss and high-flow glass fiber reinforced polycarbonate composite material and a preparation method thereof. Background technique [0002] Polycarbonate (PC) is widely used in various fields of social life such as electronic appliances, building materials, packaging, automobile industry, etc. due to its excellent physical and mechanical properties, high impact strength, good electrical properties, and good dimensional stability. Currently one of the largest and most widely used polymers. The glass fiber reinforced polycarbonate material can greatly improve the mechanical properties of the polycarbonate material, reduce the thermal expansion coefficient of the material, improve its stress cracking performance, and improve the fatigue strength. It can be used to replace aluminum, zinc and other materials in electrical, instrumentation, Manufactures va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K7/14B29C47/92B29C48/92
CPCB29B9/06C08L69/00C08L2205/03C08L2205/035C08L67/02C08L51/04C08K13/04C08K7/14C08K2003/2241C08L51/06C08K3/34C08L23/0869C08L23/06C08K7/20C08K3/346
Inventor 杨桂生赵敏
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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