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Polypropylene composite material for automobile hard plastic instrument panel and preparation method for polypropylene composite material

A composite material and polypropylene technology, which is applied in the field of polypropylene composite materials for automotive rigid plastic instrument panels and their preparation, can solve the problems of deteriorating instrument panel material odor, not meeting consumer demands, and rising material costs, and achieves excellent resistance. Scratch effect, low gloss, high dimensional stability effect

Inactive Publication Date: 2014-04-30
SHANGHAI KINGFA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ordinary hard plastic dashboards are injection-molded with composites of polypropylene, talcum powder, and thermoplastic elastomers, which have high gloss and poor scratch resistance, which does not meet the requirements for automotive dashboard materials. In order to improve the performance of dashboard materials Scratch resistance, in the process of processing, a large amount of scratch resistance additives will be added, which not only increases the material cost, but also deteriorates the smell of the instrument panel material, which does not meet the needs of consumers, and also follows the Can't keep pace with the development of the automobile industry

Method used

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  • Polypropylene composite material for automobile hard plastic instrument panel and preparation method for polypropylene composite material
  • Polypropylene composite material for automobile hard plastic instrument panel and preparation method for polypropylene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 70 kg of polypropylene PP (BX3800), 0.2 kg of phenolic heat stabilizer 1010, 0.3 kg of phosphite heat stabilizer 168, 0.3 kg of processing aid EBS, 0.2 kg of special nucleating agent for polypropylene TMP-5, 12 One kilogram of ethylene octene copolymer POE LC670, 2 kilograms of maleic anhydride grafted polypropylene CA-100, 11 kilograms of 3000 mesh ultrafine talc powder were melt mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1;

[0029] Then 4 kg of chopped alkali-free flat glass fiber (aspect ratio = 4) is weighed by a loss-in-weight weighing scale and then accurately added from a side feeding device to finally obtain the product. The processing conditions of the twin-screw extruder are: the temperature of the first zone is 190°C, the temperature of the second zone is 200°C, the temperature of the third zone is 210°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone ...

Embodiment 2

[0033] 59 kg of polypropylene PP (BX3900), 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of phosphite heat stabilizer 168, 0.5 kg of processing aid EB-FF, 0.5 kg of polypropylene special nucleating agent HPN-20E , 15 kilograms of ethylene octene copolymer POE8130, 4 kilograms of maleic anhydride grafted polypropylene Bondyram1001CN, 13 kilograms of 5000 mesh superfine talcum powder are melt mixed and dispersed in a twin-screw extruder with a length-to-diameter ratio of 40:1; then 7 kg of chopped alkali-free flat glass fiber (aspect ratio = 6) is weighed by a loss-in-weight weighing scale and then accurately fed from a side feeding device to obtain the final product. The processing conditions of the twin-screw extruder are: the temperature of the first zone is 190°C, the temperature of the second zone is 200°C, the temperature of the third zone is 210°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zo...

Embodiment 3

[0037] 45 kg of polypropylene PP BX3920, 1 kg of phenolic heat stabilizer 1010, 1 kg of phosphite heat stabilizer 627A, 1 kg of processing aid zinc stearate, 1 kg of polypropylene special nucleating agent HTPUTRA5, 20 kg Ethylene octene copolymer POE8137, 6 kilograms of maleic anhydride grafted polypropylene Bondyram1001, 15 kilograms of 3000 mesh talc powder were melt mixed and dispersed in a twin-screw extruder with an aspect ratio of 40:1.

[0038] 10 kg of chopped non-alkali flat glass fiber (aspect ratio = 7) is accurately fed from the side feeding device through a loss-in-weight weighing scale, and finally the product is obtained. The processing conditions of the twin-screw extruder are: the temperature of the first zone is 190°C, the temperature of the second zone is 200°C, the temperature of the third zone is 210°C, the temperature of the fourth zone is 220°C, the temperature of the fifth zone is 230°C, and the temperature of the sixth zone is 240°C. The specific perfo...

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Abstract

The invention belongs to the technical field of high polymer materials, and in particular relates to a polypropylene composite material for an automobile hard plastic instrument panel and a preparation method for the polypropylene composite material. The polypropylene composite material is prepared from the following raw materials in percentage by weight: 33 to 76 percent of polypropylene, 0 to 2 percent of heat stabilizer, 0 to 2 percent of processing aid, 0 to 2 percent of nucleating agent special for polypropylene, 10 to 20 percent of plasticizer, 2 to 6 percent of compatibilizer, 10 to 25 percent of superfine talc powder and 2 to 10 percent of chopped flat fiberglass. When the polypropylene composite material for the automobile hard plastic instrument panel is prepared, the chopped flat fiberglass is added, so that the surface hardness of the polypropylene composite material is increased, good scratch resistant effects are achieved without adding any scratch resistant agent, and a matte effect is also achieved; the polypropylene composite material also has the characteristics of high flowability, high rigidity, high heat resistance, high dimensional stability, high impact resistance, low glossiness and scratch resistance, and requirements on a material for the automobile hard plastic instrument panel are completely met.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polypropylene composite material for automobile hard plastic instrument panels and a preparation method thereof. Background technique [0002] The car dashboard is the assembly part with the most complex structure and the largest number of parts in the car interior. It integrates many parts such as airbags, instrument panels, audio entertainment systems, and air-conditioning controllers. There are high requirements for scratch resistance and gloss, and it is an automotive part that combines decoration and functionality. [0003] In addition to maintaining the original protective function, today's automotive dashboards also require impact resistance, scratch resistance, and low gloss. Traditional instrument panel materials generally use PC / ABS, LFTPP, glass fiber reinforced SMA or talcum powder filled polypropylene as the body material, and thermoplastic e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/04C08K7/14C08K3/34B29B9/06B29C47/92B29C48/92
CPCB29B9/06B29C48/92B29C2948/92704C08L23/12C08L23/14C08L2201/08C08L2205/03C08L23/0815C08L51/06C08K13/04C08K7/14C08K3/34B29C48/04B29C48/40B29C48/625B29C48/875B29C2948/92895
Inventor 程文超孙刚
Owner SHANGHAI KINGFA SCI & TECH
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