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High-shading-coefficient PC/GF (polycarbonate/glass fiber) composite material and preparation method thereof

A composite material, high shading technology, applied in the field of polymer materials, can solve the problems of not being able to give full play to the advantages of polycarbonate glass fiber composite materials, less research, etc., and achieve the effects of high strength, improved weather resistance, and improved mechanical strength

Inactive Publication Date: 2017-09-12
东莞市骄阳塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there have been a lot of research on glass fiber reinforced polycarbonate composite materials, but there are few researches on polycarbonate glass fiber composite materials with high shading rate, and the advantages of polycarbonate glass fiber composite materials cannot be fully utilized.

Method used

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  • High-shading-coefficient PC/GF (polycarbonate/glass fiber) composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of polycarbonate glass fiber composite material

[0025] 1) Weigh the required raw materials in proportion;

[0026] 2) Place the polycarbonate in an oven at 110°C for 24 hours, place the acrylonitrile-styrene copolymer in an oven at 80°C for 4 hours, place titanium dioxide in an oven at 110°C for 12 hours, and place glass fibers in an oven at 110°C for 12 hours. , After drying, place it in a vacuum sealing machine to seal for later use;

[0027] 3) Mix polycarbonate, acrylonitrile-styrene copolymer, antioxidant, toughening agent, light stabilizer, flame retardant, and pentaerythritol stearate in a high-speed mixer for 3-5 minutes, and then mix the glass fiber Add to the high-speed mixer and mix for 2 minutes; the rotation speed is 1150rpm;

[0028] 4) After being evenly mixed, it is sent to the twin-screw extruder, and melted and kneaded for at least 2min at a speed of 400rpm and a temperature of 240℃-290℃;

[0029] 5) After mixing, extrusion is cooled i...

Embodiment 2

[0046] Example 2: Performance test of composite materials

[0047] Product performance test, the results are shown in Table 2;

[0048] Table 2:

[0049] Material performance

standard test

unit

Recipe 1

Recipe 2

Recipe 3

Recipe 4

Recipe 5

Recipe 6

Tensile Strength

ISO527

Mpa

64

71

67

58

61

68

Elongation at break

ISO527

％

105

95

98

101

104

110

Bending strength

ISO178

Mpa

108

124

115

106

84

102

Notched impact strength

ISO179-2

Kj / m 2

28

42

38

34

28

62

Rockwell hardness

ISO2039-2

R-scale

108

124

126

122

98

122

1.0mm transmittance

GB / T2410

％

18

14

15

20

12

87

[0050] According to the mechanical performance test results shown in Table 1, it can be seen that the comprehensive mechanical properties of formula 2 or formula 3 are better. Compared with pure polycarbonate, the notched impact strength of the composite material is lower, because with the content of glass fiber and titanium dioxide Increase, its notched impact strength will be significantly reduced. Although the remaining mechanica...

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Abstract

The invention discloses a high-shading-coefficient PC / GF (polycarbonate / glass fiber) composite material and a preparation method thereof. The high-shading-coefficient PC composite material is characterized by being prepared from, by mass, 100 parts of polycarbonate, 5-30 parts of acrylonitrile-styrene copolymer, 8-18 parts of glass fibers, 2-10 parts of titanium dioxide, 0.2-1 part of an antioxidant, 2-5 parts of a toughening agent, 0.2-1.2 parts of a light stabilizer, 0.1-2 parts of a flame retardant and 0.1-1 part of pentaerythritol stearate. The high-shading-coefficient PC / GF composite material has great mechanical properties and light shielding effects.

Description

Technical field [0001] The invention relates to the field of polymer materials, in particular to a PC / GF composite material with high shading rate and a preparation method and preparation method thereof. Background technique [0002] Polycarbonate (PC for short) is a high molecular weight polymer containing carbonate groups in the molecular chain. According to the structure of the ester group, it can be divided into aliphatic, aromatic, aliphatic-aromatic and other types. Among them, the lower mechanical properties of aliphatic and aliphatic-aromatic polycarbonates limit their application in engineering plastics. At present, only aromatic polycarbonate has obtained industrial production. Due to the special structure of polycarbonate, it has become the fastest growing general engineering plastic among the five major engineering plastics. The three major application areas of PC engineering plastics are glass assembly industry, automobile industry and electronics and electrical in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L33/20C08K13/04C08K7/14C08K3/22C08K5/103C08K5/134C08K5/526C08J5/04
CPCC08J5/043C08J2369/00C08J2433/20C08K2003/2241C08K2201/004C08L69/00C08L2201/08C08L33/20C08K13/04C08K7/14C08K3/22C08K5/103C08K5/1345C08K5/526
Inventor 李飒王春闯
Owner 东莞市骄阳塑胶科技有限公司
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