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Polypropylene composite material without tiger skin stripes at high temperature and preparation method thereof

A composite material and technology of tiger skin pattern, which is applied in the field of polypropylene composite material without tiger skin pattern at high temperature and its preparation field, can solve the problem of not realizing no tiger skin pattern, etc., and achieve the effect of simple preparation process

Inactive Publication Date: 2020-06-16
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN106147033 discloses a non-tiger-skin polypropylene composite material and its preparation method and application. By adding a tiger-skin eliminating agent, the appearance state of no tiger-skin can be realized at normal temperature, but no tiger-skin appearance can be achieved at high temperature

Method used

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  • Polypropylene composite material without tiger skin stripes at high temperature and preparation method thereof
  • Polypropylene composite material without tiger skin stripes at high temperature and preparation method thereof
  • Polypropylene composite material without tiger skin stripes at high temperature and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Be the copolymerized polypropylene of 74.4 parts by weight, 10 parts of elastomers, 5 parts of high-temperature-resistant tiger skin pattern eliminating agents, 10 parts of talcum powder, 0.2 parts of antioxidant A, 0.2 parts of antioxidant B, 0.2 parts of The weathering agent is added into the mixer and mixed evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm, and then the mixed material is put into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder from the feeding section to the machine head is 175-185°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 185-195°C, 185°C -195°C, 180-190°C, 180-190°C, the screw speed is 180 rpm, and the screw length-to-diameter ratio is 40:1.

Embodiment 2

[0038] Be the copolymerized polypropylene of 62.4 parts by weight, 20 parts of elastomers, 7 parts of high-temperature resistant tiger skin pattern eliminating agents, 10 parts of talcum powder, 0.2 parts of antioxidant A, 0.2 parts of antioxidant B, 0.2 parts of The weathering agent is added into the mixer and mixed evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm, and then the mixed material is put into a twin-screw extruder for extrusion, cooling, granulation, and packaging. The temperature of the extruder from the feeding section to the machine head is 175-185°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 185-195°C, 185°C -195°C, 180-190°C, 180-190°C, the screw speed is 180 rpm, and the screw length-to-diameter ratio is 40:1.

Embodiment 3

[0040] Be the copolymerized polypropylene of 59.4 parts by weight, 20 parts of elastomers, 10 parts of high-temperature resistant tiger skin pattern eliminating agents, 10 parts of talcum powder, 0.2 parts of antioxidant A, 0.2 parts of antioxidant B, 0.2 parts of The weathering agent is added into the mixer and mixed evenly. Wherein, the temperature of the mixer is 63° C., and the rotation speed of the mixer is 130 rpm, and then the mixed material is put into a twin-screw extruder for extrusion, cooling, granulation, and packing. The temperature of the extruder from the feeding section to the machine head is 175-185°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 190-200°C, 185-195°C, 185°C -195°C, 180-190°C, 180-190°C, the screw speed is 180 rpm, and the screw length-to-diameter ratio is 40:1.

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Abstract

The invention discloses a polypropylene composite material without tiger skin stripes at high temperature and a preparation method thereof. The composite material comprises the following components inpercentage by mass: 33.8%-89.6% of polypropylene, 5%-25% of a toughening elastomer, 0%-30% of talcum powder, 5%-10% of a high-temperature-resistant tiger skin stripe remover, 0.2%-0.6% of an antioxidant and 0.2%-0.6% of a weather-resistant agent. According to the invention, the high-temperature-resistant tiger skin stripe remover is added so that the tiger skin stripe phenomenon generated in theinjection molding process of composite materials at the normal temperature can be eliminated, the tiger skin stripe phenomenon generated in the injection molding process of composite materials after high-temperature storage can also be eliminated, the composite material can also keep good comprehensive performance, and the composite material can be widely applied to other large parts such as automobile interior and exterior decorations.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polypropylene composite material without tiger skin pattern at high temperature and a preparation method thereof. Background technique [0002] Compared with other general-purpose thermoplastic resins, polypropylene resin has the advantages of low relative density, low price, good processability and good overall performance, but polypropylene also has disadvantages such as poor rigidity and large molding shrinkage. In the practical application of polypropylene materials, in order to improve the toughness of polypropylene, ethylene-octene copolymer is usually added to toughen polypropylene, especially for large-area automotive interior and exterior decoration parts, etc., which require high material toughness. It is necessary to add a large amount of elastomer for toughening, and the addition of elastomer increases the risk of tiger skin pattern in the end product. [0003] All...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L53/00C08L23/08C08K13/02C08K3/34C08K5/134C08K5/526C08K5/3435C08K5/3475
CPCC08L23/14C08L2201/08C08L2205/025C08L2205/035
Inventor 赵鹏伟陈延安孙刚
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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