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High-performance and high-surface-adhesion polypropylene material applicable to paint spraying and adhesion and preparation method thereof

A polypropylene material, high surface technology, applied in the field of high performance, high surface adhesion suitable for painting and adhesive polypropylene materials and its preparation, can solve the problems of unsuitable surface painting, increased processing costs, high scrap rate, etc. , to achieve the effect of increasing mechanical properties, improving adhesion, and adding less

Inactive Publication Date: 2020-05-01
SHANGHAI PRET COMPOSITES +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because of the special functional requirements of auto parts, such as in order to meet the requirements of appearance and weather resistance, the surface of the parts is often sprayed, and different plastic parts are directly connected together by welding and glue. These special functional requirements require materials to have a higher surface Adhesion, but the polypropylene material has poor polarity due to its molecular structure, so it is not suitable for surface painting and adhesive experiments. Even if the surface is treated with plasma and flame to increase the surface polarity, but the increase in the process increases the processing cost, and the scrap rate is relatively high. High, increasing the surface adhesion of polypropylene materials through material modification is of great significance for the application of polypropylene materials in auto parts

Method used

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  • High-performance and high-surface-adhesion polypropylene material applicable to paint spraying and adhesion and preparation method thereof
  • High-performance and high-surface-adhesion polypropylene material applicable to paint spraying and adhesion and preparation method thereof
  • High-performance and high-surface-adhesion polypropylene material applicable to paint spraying and adhesion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058]Weigh PP-B 2.1kg, PP-C 4.0kg, POE 1.7kg, antioxidant 1010 10g, antioxidant DSTP10g, antioxidant 168 20g; additive-calcium stearate CaST 10g, additive-7072 50g , Adhesion promoter: C100T 100g, black masterbatch 2014 100g; mix evenly in a high-speed mixer to obtain a mixture, and set aside; weigh 1.8kg of talcum powder, set aside

[0059] The above mixture is added to the twin-screw extruder through the main feeding port (the length-to-diameter ratio of the extruder is L / D=40, and the screw diameter is 35mm), and the filler is added to the extruder through side feeding. The control temperature of each section of the screw extruder (from the feeding port to the outlet of the machine head) is 150 ° C, 210 ° C, 2250 ° C, 225 ° C, 220 ° C, 220 ° C, 215, 215 ° C, 215 ° C, 215 ° C, the machine head 210°C, the twin-screw extruder rotates at 420r / min, the extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0060] The a...

Embodiment 2

[0062] Weigh PP-A 2.0kg, PP-C 4.0kg, POE 1.7kg, antioxidant 1010 10g, antioxidant DSTP10g, antioxidant 168 20g; additive-calcium stearate CaST 10g, additive-7072 50g , adhesion promoter: C100T 200g, black masterbatch 2014 100g; mix uniformly in a high-speed mixer to obtain a mixture, and set aside; weigh 1.8kg of talcum powder, set aside

[0063] The above mixture is added to the twin-screw extruder through the main feeding port (the length-to-diameter ratio of the extruder is L / D=40, and the screw diameter is 35mm), and the filler is added to the extruder through side feeding. The control temperature of each section of the screw extruder (from the feeding port to the outlet of the machine head) is 150 ° C, 210 ° C, 2250 ° C, 225 ° C, 220 ° C, 220 ° C, 215, 215 ° C, 215 ° C, 215 ° C, the machine head 210°C, the twin-screw extruder rotates at 420r / min, the extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0064] T...

Embodiment 3

[0066] Weigh PP-A 3.0kg, PP-B 3.5kg, POE 2.0kg, antioxidant 1010 10g, antioxidant DSTP10g, antioxidant 168 20g; additive-calcium stearate CaST 10g, additive-7072 50g , Adhesion promoter: C100T 100g, black masterbatch 2014 100g; mix evenly in a high-speed mixer to obtain a mixture, and set aside; weigh 1.2kg of talcum powder, set aside

[0067] The above mixture is added to the twin-screw extruder through the main feeding port (the length-to-diameter ratio of the extruder is L / D=40, and the screw diameter is 35mm), and the filler is added to the extruder through side feeding. The control temperature of each section of the screw extruder (from the feeding port to the outlet of the machine head) is 150 ° C, 210 ° C, 2250 ° C, 225 ° C, 220 ° C, 220 ° C, 215, 215 ° C, 215 ° C, 215 ° C, the machine head 210°C, the twin-screw extruder rotates at 420r / min, the extruded strips are cooled in a water tank, dried by a blower dryer, and then pelletized to obtain the product.

[0068] The ...

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Abstract

The invention discloses a high-performance and high-surface-adhesion polypropylene material applicable to paint spraying and adhesion and a preparation method thereof. The high-performance and high-surface-adhesion polypropylene material is composed of the following components in percentages by weight: 30.8-89.4% of a PP base material, 0 to 25% of a toughening agent, 10-40% of a filling substance,0.6-2.2% of an antioxidant and 0-2% of an adhesion promoter. The high-performance and high-surface-adhesion polypropylene material provided by the invention has the following beneficial effects: through a hyperbranched additive, the compatibility between the polypropylene and the filling substance can be effectively improved, and the mechanical properties of the material are enhanced; by means ofa special hyperbranched structure of the additive, the melt index of the polypropylene material can be significantly increased, and the processability of the polypropylene material is improved; mostimportantly, the surface polarity of the polypropylene material can be improved, and the surface adhesion of the polypropylene material to paint and an adhesive is improved; and compared with additives like PP-g-MAH, the hyperbranched additive is good in effect, odorless and non-toxic. The polypropylene material is endowed with functional performance; and the use requirements of automobile parts like automobile bumpers and tailgates on the polypropylene material are met.

Description

technical field [0001] The invention relates to endowing the polypropylene material with good mechanical properties, processing properties and high surface adhesion through the scientific design of the formula, which meets the requirements of the bumper, tailgate and other parts for the spraying and adhesive experiments of the polypropylene material. The successful application of polypropylene material on the tailgate of automobiles is of great significance to the realization of the lightweight of automobiles. Background technique [0002] Energy saving and environmental protection are the themes of the future development of the automotive industry, and automotive materials are gradually developing in the direction of "lightweight", "functional" and "environmental protection". As far as ordinary passenger cars are concerned, non-metallic materials account for as much as three The use of non-metallic materials plays an important role in the comfort and environmental protectio...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/08C08L101/00C08K13/02C08K5/098C08K3/34C08K13/04C08K7/14
CPCC08L23/12C08L23/14C08L2205/06C08L2310/00C08L2205/025C08L23/0815C08L101/00C08K13/02C08K5/098C08K3/34C08K13/04C08K7/14
Inventor 王溢张锴蔡青周文
Owner SHANGHAI PRET COMPOSITES