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Buckling deformation-resistant glass fiber reinforced polycarbonate resin and preparation method thereof

A technology of polycarbonate resin and glass fiber, which is applied in the field of glass fiber reinforced polycarbonate resin and its preparation, can solve the problems of inconvenient material selection, and achieve the effects of stable size, consistent shrinkage rate, and excellent comprehensive mechanical properties

Active Publication Date: 2014-12-10
SHANGHAI KUMHO SUNNY PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reinforced glass fiber is a combination of various glass fibers, which is not convenient for material selection

Method used

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  • Buckling deformation-resistant glass fiber reinforced polycarbonate resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 Preparation of the glass fiber reinforced polycarbonate resin of the present invention (1)

[0048] (1) Weigh the raw materials according to the following weight ratios: PC-300-15 43 parts, toughening agent EXL2678 7 parts, glass fiber CSG 3PA-830 50 parts, antioxidant 1010 0.1 parts, antioxidant 168 0.2 parts , 0.2 parts of internal lubricant PETS;

[0049] (2) Mix the above raw materials (excluding glass fiber) in a medium-speed mixer for 20 minutes;

[0050] (3) Put the above-mentioned mixed raw materials into a twin-screw extruder with a melting temperature of 200-280℃, feed glass fiber side-by-side, melt-extrusion, and pelletize. The temperature of each zone of the twin-screw extruder is: 1 The temperature of zone -2 is 200-280℃, the temperature of zone 3-4 is 200-280℃, the temperature of zone 5-6 is 200-280℃, and the temperature of zone 7-8 of temperature control is 200-280℃. Control the temperature of zone 9-10 at 200-280℃.

Embodiment 2

[0051] Example 2 Preparation of the glass fiber reinforced polycarbonate resin of the present invention (2)

[0052] (1) Weigh the raw materials according to the following weight ratios: PC-300-15 77 parts, toughening agent EXL2678 3 parts, glass fiber CSG 3PA-830 20 parts, antioxidant 1010 0.1 parts, antioxidant 168 0.2 parts , 0.2 parts of internal lubricant PETS;

[0053] (2) Mix the above raw materials (excluding glass fiber) in a medium-speed mixer for 20 minutes;

[0054] (3) Put the above-mentioned mixed raw materials into a twin-screw extruder with a melting temperature of 200-280℃, feed glass fiber side-by-side, melt-extrusion, and pelletize. The temperature of each zone of the twin-screw extruder is: 1 The temperature of zone -2 is 200-280℃, the temperature of zone 3-4 is 200-280℃, the temperature of zone 5-6 is 200-280℃, and the temperature of zone 7-8 of temperature control is 200-280℃. Control the temperature of zone 9-10 at 200-280℃.

Embodiment 3

[0055] Example 3 Preparation of the glass fiber reinforced polycarbonate resin of the present invention (3)

[0056] (1) Weigh the raw materials according to the following parts by weight ratio: 60 parts of polyethylene carbonate (weight average molecular weight 18000), 5 parts of toughening agent EXL2678, and 35 parts of glass fiber (width to diameter ratio 2:1, length 6mm) , 0.5 part of antioxidant 1010, 0.5 part of antioxidant 168, 0.5 part of internal lubricant PETS, 0.5 part of release agent polyethylene wax;

[0057] (2) Mix the above raw materials (excluding glass fiber) in a medium-speed mixer for 10 minutes;

[0058] (3) Put the above-mentioned mixed raw materials into a twin-screw extruder with a melting temperature of 200-280℃, feed glass fiber side-by-side, melt-extrusion, and pelletize. The temperature of each zone of the twin-screw extruder is: 1 The temperature of zone -2 is 200-280℃, the temperature of zone 3-4 is 200-280℃, the temperature of zone 5-6 is 200-280℃, a...

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Abstract

The invention provides buckling deformation-resistant glass fiber reinforced polycarbonate resin. The buckling deformation-resistant glass fiber reinforced polycarbonate resin is prepared from the following raw materials in part by weight: 43 to 77 parts of polycarbonate, 3 to 7 parts of flexibilizer, 20 to 50 parts of glass fiber, and 0 to 2 parts of aid; and the glass fiber is short fiber of which the width diameter ratio is (2:1)-(6:1), and the length is 3 to 6mm. The invention also provides a preparation method for the buckling deformation-resistant glass fiber reinforced polycarbonate resin. The method comprises the following steps of: weighing raw materials in a weight ratio; mixing polycarbonate, flexibilizer, and aid in a mixer for 10 to 30 minutes; and feeding the mixed raw materials into a twin-screw extruder, performing side feeding of the glass fiber, performing melt extrusion, and pelleting. The buckling deformation-resistant glass fiber reinforced polycarbonate resin has the advantages that the added glass fiber is special-shaped glass fiber which is high in width diameter ratio, so that when melt flows, the orientation of the glass fiber is avoided; therefore, the shrinkage rates in the horizontal and longitudinal directions are consistent with each other, and the buckling performance of a final product is improved; the rigidity and the flowability are improved, and the glass fiber reinforced polycarbonate resin is excellent is comprehensive mechanical property; and raw materials have few varieties, so that materials can be selected conveniently, and the actual production and operation can be realized conveniently.

Description

technical field [0001] The invention relates to a modified polycarbonate resin, in particular to a warpage-resistant glass fiber reinforced polycarbonate resin and a preparation method thereof. Background technique [0002] The chemical name of polycarbonate (Polycarbonate, PC) is 2,2'-bis(4-hydroxyphenyl)propane polycarbonate, which is a non-crystalline engineering plastic with excellent impact strength, thermal stability and gloss. , Antibacterial properties, flame retardant properties and anti-pollution properties. Glass fiber reinforced polycarbonate improves the mechanical properties and rigidity of polycarbonate, the linear expansion coefficient is greatly reduced, the dimensional stability is greatly improved, and the molding shrinkage rate is significantly reduced. At the same time, it overcomes the stress cracking resistance and fatigue strength of polycarbonate. It can be used to replace aluminum, zinc and other die-casting load parts and products with extremely h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L25/10C08L33/12C08K7/14B29C47/92B29C48/92
CPCB29C47/92B29C48/04B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92895
Inventor 杨春华李文强李强罗明华辛敏琦
Owner SHANGHAI KUMHO SUNNY PLASTICS
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