Preparation method of polypropylene material with high appearance performance, high performance and low emission for automobile interior and exterior decoration

A technology for automobile interior and exterior trim and polypropylene materials, which is used in the field of preparing high-performance, high-performance, low-emission polypropylene materials for automobile interior and exterior trims. Tiger skin pattern and other problems, to solve the appearance problems such as tiger skin pattern, reduce the processing temperature and solve the effect of low emission

Inactive Publication Date: 2019-04-26
ZHEJIANG PRET NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that polypropylene materials are widely used in automobiles, and the parts used are relatively large. However, the application of polypropylene materials in automobiles is also facing many problems, such as: 1. The dashboard often has appearance problems such as tiger skin patterns ; 2. The emission performance of injection molded parts cannot meet the requirements of interior materials due to large

Method used

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  • Preparation method of polypropylene material with high appearance performance, high performance and low emission for automobile interior and exterior decoration
  • Preparation method of polypropylene material with high appearance performance, high performance and low emission for automobile interior and exterior decoration
  • Preparation method of polypropylene material with high appearance performance, high performance and low emission for automobile interior and exterior decoration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh PP1 5.2kg, PP-2 1.5kg, PP L-Modu 0.5kg, talcum powder 1.5kg, toughening agent 1.5kg, antioxidant 1010 10g, antioxidant DSTP 10g, antioxidant 168 20g; - calcium stearate CaST 10g, auxiliary agent-7072 50g, light stabilizer UV-5590 20g, scraping auxiliary agent 100g; mix well in a high-speed mixer to obtain a mixture, set aside;

[0047] The above mixture is added to the twin-screw extruder (the diameter of the screw is 35 mm, and the ratio of length to diameter is L / D=40) through the main feeding port. The temperature of each section of the twin-screw extruder is controlled (from the feeding port to the head Exit) is 150°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 230°C, head 220°C, twin-screw extruder speed is 350r / min, The extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0048] The above materials were dried at 100°C for 2 hours in a forced air drying oven and then injection molded i...

Embodiment 2

[0050]Weigh PP-1 1.0KG, PP2 4.18kg, PP L-Modu 0.5kg, talcum powder 2.0kg, toughening agent 1.6kg, antioxidant 1010 10g, antioxidant DSTP 10g, antioxidant 168 20g; - calcium stearate CaST 10g, auxiliary agent-707250g, light stabilizer UV-5590 20g, scraping auxiliary agent 100g; mix well in a high-speed mixer to obtain a mixture, set aside;

[0051] The above mixture is added to the twin-screw extruder (the diameter of the screw is 35 mm, and the ratio of length to diameter is L / D=40) through the main feeding port. The temperature of each section of the twin-screw extruder is controlled (from the feeding port to the head Exit) is 150°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 230°C, head 220°C, twin-screw extruder speed is 350r / min, The extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0052] The above materials were dried at 100°C for 2 hours in a forced air drying oven and then injection molded in...

Embodiment 3

[0054] Weigh PP-1 1.0KG, PP2 3.68kg, PP L-Modu 1.0kg, talcum powder 2.0kg, toughening agent 1.6kg, antioxidant 1010 10g, antioxidant DSTP 10g, antioxidant 168 20g; - calcium stearate CaST 10g, auxiliary agent-707250g, light stabilizer UV-5590 20g, scraping auxiliary agent 100g; mix well in a high-speed mixer to obtain a mixture, set aside;

[0055] The above mixture is added to the twin-screw extruder (the diameter of the screw is 35 mm, and the ratio of length to diameter is L / D=40) through the main feeding port. The temperature of each section of the twin-screw extruder is controlled (from the feeding port to the head Exit) is 150°C, 210°C, 210°C, 210°C, 220°C, 220°C, 230°C, 230°C, 230°C, 230°C, head 220°C, twin-screw extruder speed is 350r / min, The extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0056] The above materials were dried at 100°C for 2 hours in a forced air drying oven and then injection molded i...

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Abstract

The invention discloses a polypropylene material with high appearance performance, high performance and low emission for automobile interior and exterior decoration and a preparation method of the polypropylene material. The polypropylene material is prepared from components in percentage by weight as follows in a composition formula: 30.8%-89.4% of a PP matrix, 0-25% of a flexibilizer, 10%-30% oftalcum powder, 0-10% of PP L-Modu, 0.6%-2.2% of an antioxidant and 0-2% of a scraping assistant. The polypropylene material has the following beneficial effects: 1, the problems of appearance such astiger skin and the like frequently occurring to parts such as a dashboard are solved by the characteristics of high liquidity and low crystallization temperature of PP L-Modu; 2, by adding PP L-Modu,the injection temperature is reduced, and properties such as emission and the like can be improved; 3, PP L-Modu can effectively improve liquidity of the material and reduce the crystallization temperature of the material, processing windows of the material are increased, and the production requirements of bumpers and other small parts for thin walls can be met.

Description

technical field [0001] The invention relates to improving the fluidity, processing performance and emission performance of polypropylene materials, improving the processing window of polypropylene materials in the injection molding process, improving the problems such as tiger skin patterns that often appear in the injection molding process, and realizing the use of polypropylene materials in instrument panels. , Door panels, columns, thin-walled bumpers and other parts. Background technique [0002] The development of the world's automobile industry faces three major problems: energy saving, environmental protection and safety. According to tests by relevant research institutions, a 10% weight reduction of gasoline passenger cars can reduce fuel consumption by 3.3%, and a 15% weight reduction can reduce fuel consumption by 5%. , Automobile lightweight has become the trend of future automobile development. Polypropylene material has the characteristics of low density, easy d...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/08C08L83/04C08K13/02C08K3/34C08K5/098
CPCC08L23/12C08L2205/025C08L2205/035C08L2205/06C08L23/14C08L23/0815C08L83/04C08K13/02C08K3/34C08K5/098
Inventor 王溢张锴蔡青周文
Owner ZHEJIANG PRET NEW MATERIALS
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