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Glass fiber reinforced polypropylene material and preparation method thereof

A technology of polypropylene material and copolymerized polypropylene, which is applied in the field of glass fiber reinforced polypropylene material and its preparation, can solve the gaps in mechanical properties, hydrolysis resistance and thermal oxidation resistance, imperfect material formula and processing technology, mechanical properties There are still problems to be improved to achieve the effect of excellent hydrolysis resistance, easy control of glass fiber content, and excellent hydrolysis resistance

Active Publication Date: 2011-09-14
PANASONIC APPLIANCES CHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A three-component stabilizer system is added to the glass fiber reinforced polypropylene material disclosed in the Chinese Patent Publication CN1696187A, which is formulated with the following raw materials in weight ratio (%): polypropylene 45-75, maleic anhydride Branched polypropylene 5-15, glass fiber 10-30, stabilizer DSTP 0.1-1.0, stabilizer 3114 0.1-1.0, stabilizer 618 0.1-0.5, wherein, the stabilizer DSTP is thiodipropionic acid ten octaester; stabilizer 3114 is 3,5-di-tert-butyl-4-hydroxybenzyl diethyl phosphate; stabilizer 618 is dioctadecyl pentaerythritol diphosphite; the disadvantage of this method is the material prepared It is a short fiber reinforced polypropylene material with low mechanical properties. Although the heat resistance can meet the customer's requirements, the mechanical properties need to be improved.
[0004] Although there are many domestic polypropylene modified manufacturers, due to the imperfect material formula and processing technology, the modified polypropylene materials produced by domestic manufacturers are still inferior to foreign materials in terms of mechanical properties, hydrolysis resistance and thermal oxidation resistance. certain gap

Method used

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  • Glass fiber reinforced polypropylene material and preparation method thereof
  • Glass fiber reinforced polypropylene material and preparation method thereof
  • Glass fiber reinforced polypropylene material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 40 parts of copolymerized polypropylene, 40 parts of homopolypropylene, 5 parts of maleic anhydride grafted polypropylene, 0.5 parts of antioxidant 330, 0.5 parts of antioxidant 1035, 1.5 parts of antioxidant DSTP, 0.5 parts of antioxidant 618 1 part, light stabilizer (bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate) 1 part and lubricant EBS 1 part, add to the high mixer in turn and mix well After 3-5 minutes, put the mixture into the hopper and use a twin-screw extruder to mix and melt it, and then mix 10 parts of the glass fiber whose surface has been treated with a silane coupling agent in the twin-screw extruder, and melt-extrude Pull out the strip, cool it with water, dry the moisture on the surface of the strip, and then pelletize. The screw diameter of the twin-screw extruder is 20-65mm, and the length-to-diameter ratio of the screw is 40:1. The melting temperature is set as follows: 1 Zone 180°C, Zone 2 190°C, Zone 3 200°C, Zone 4 210°C, Zone 5 220°C, Melt Tempe...

Embodiment 2

[0079] 30 parts of copolymerized polypropylene, 35 parts of homopolypropylene, 5 parts of polypropylene grafted with glycidyl acrylate, 1 part of antioxidant 330, 1 part of antioxidant 3114, 1 part of antioxidant 1035, antioxidant 300 1 part, antioxidant 626 0.5 part, antioxidant 618 1 part, antioxidant 168 0.5 part, poly{[6-[(1,1,3,3-tetramethylbutyl)amino]]- 1,3,5-Triazine-2,4-bis[(2,2,6,6,-tetramethyl-piperidinyl)imino]-1,6-hexadiene[(2,2, 6,6-tetramethyl-4-piperidinyl)imino]} 1 part, polysuccinic acid (4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyl) ester 1 part Add 2 parts of polyethylene wax and polyethylene wax into the high mixer in turn, mix thoroughly for 3-5 minutes, then put the mixture into the hopper and use a twin-screw extruder to mix and melt, and then pass through the same surface in the twin-screw extruder Blend 20 parts of glass fiber treated with silane coupling agent, melt and extrude the strands, cool with water, dry the moisture on the surface of the stra...

Embodiment 3

[0097] Add 50 parts of copolymerized polypropylene, 30 parts of homopolypropylene, and 5 parts of glycidyl acrylate grafted polypropylene into the high mixer in sequence, and mix thoroughly for 3-5 minutes, then put the mixture into the hopper for The twin-screw extruder is mixed and melted, and then blended with 15 parts of glass fibers whose surface has been treated with a silane coupling agent in the twin-screw extruder, and the strands are melted and extruded, cooled by water, and the moisture on the surface of the strands is blown dry. , and then pelletized. The screw diameter of the twin-screw extruder is 20-65mm, and the length-to-diameter ratio of the screw is 40:1. Zone 200°C, zone 5 210°C, melt temperature 205°C, head 195°C.

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Abstract

The invention discloses a glass fiber reinforced polypropylene material and a preparation method thereof, and belongs to the technical field of organic materials. The glass fiber reinforced polypropylene material comprises polypropylene copolymer and / or polypropylene homopolymer, compatilizer, glass fibers, antioxidant, light stabilizer and lubricating agent. The preparation method of the glass fiber reinforced polypropylene material comprises the following steps of: 1) weighing; 2) mixing; and 3) performing melt extrusion, drawing and granulating. The invention has the advantages that: 1) the prepared composite material has excellent hydrolysis resistance and high thermal oxidation resistance; 2) the prepared composite material has good mechanical property, and is suitable to be used as a drum washing machine material; 3) the preparation process is simple, and the glass fiber content is easily controlled; and 4) the anti-ageing time (warm water 800H + thermal ageing) of the prepared composite material meets the using requirement of a drum washing machine.

Description

technical field [0001] The invention belongs to the technical field of organic materials, and in particular relates to a glass fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] As a general-purpose engineering plastic, glass fiber-reinforced polypropylene material has high strength, high stiffness, rigid impact strength, low density, low warpage creep, and excellent dynamic fatigue resistance. It is widely used because of its high cost performance Used in structural parts such as automobiles and home appliances, replacing materials such as metal and short glass fiber reinforced nylon. However, when polypropylene is applied to some high-standard components, its boiling resistance and thermal oxidation resistance cannot meet the requirements. For example, the washing machines that appear on the market now have high-temperature washing, sterilization and drying functions, which makes the polypropylene material used in the p...

Claims

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Application Information

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IPC IPC(8): C08L23/14C08L23/12C08K13/04C08K7/14C08K5/13C08K5/372C08K5/524B29B9/06B29C47/92B29C48/92
Inventor 陈家锋王晓群黄超蒋超杰孙利明肖玲玲
Owner PANASONIC APPLIANCES CHINA CO LTD
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