High-temperature-boiling-resistant polypropylene composite material and preparation method thereof

A technology of composite materials and polypropylene, which is applied in the field of high-temperature-resistant boiled polypropylene composite materials and its preparation, can solve problems such as failure, difficulty in passing the high-temperature boil-resistant test of spray-painted parts, and harsh test conditions, and achieve low molecular weight and low content , low catalyst residue and narrow molecular weight distribution

Active Publication Date: 2021-05-11
TIANJIN KINGFA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When testing the base material of the same painted part, the last test method is the method of soaking in boiling water at 99 °C for 4 hours. The test conditions are the most severe, and the failure phenomenon is the most likely to occur. It is the most difficult to pass the high temperature boiling test of the painted parts.

Method used

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  • High-temperature-boiling-resistant polypropylene composite material and preparation method thereof
  • High-temperature-boiling-resistant polypropylene composite material and preparation method thereof
  • High-temperature-boiling-resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031]A high-temperature-resistant boiled polypropylene composite material, which is made of the following raw materials: metallocene polypropylene Metocene HM640T 49kg, high crystallization polypropylene BX3900 30kg, crystallization POE ENGAGE XLT8677 10kg, talcum powder TYT-777A 10kg, carbon black masterbatch 2718 1kg, primary antioxidant AO-330 0.15kg, secondary antioxidant 168 0.3kg, acid scavenger BS-2818 0.2kg, lubricant TR451 0.2kg.

[0032] The preparation method of the high-temperature-resistant boiled polypropylene composite material comprises the following steps: mixing the metallocene polypropylene, high-crystalline polypropylene, talc powder, crystalline thermoplastic polyolefin elastomer, and carbon black masterbatch , antioxidants, lubricants, and acid removers are added to the twin-screw extruder from the main feeding port of the screw extruder, and after the processes of melt physical blending, extrusion, water cooling, water removal, pelletizing, and drying, ...

Embodiment 2

[0034] A high temperature resistant boiled polypropylene composite material, the composite material is made of the following raw materials by weight: metallocene polypropylene Metocene HM640T 49kg, high crystallization polypropylene BX3900 20kg, crystallization POE ENGAGE XLT8677 15kg, talcum powder TYT-777A 15kg, carbon black masterbatch 2718 1kg, primary antioxidant AO-330 0.15kg, secondary antioxidant 168 0.3kg, acid scavenger BS-2818 0.2kg, lubricant TR451 0.2kg.

[0035] The preparation method of the high-temperature-resistant boiled polypropylene composite material is the same as that in Example 1.

Embodiment 3

[0037] A high temperature resistant boiled polypropylene composite material, the composite material is made of the following raw materials by weight: metallocene polypropylene Metocene HM640T 49kg, high crystallization polypropylene BX3900 10kg, crystallization POE ENGAGE XLT8677 20kg, talcum powder TYT-777A 20kg, carbon black masterbatch 2718 1kg, primary antioxidant AO-330 0.15kg, secondary antioxidant 168 0.3kg, acid scavenger BS-2818 0.2kg, lubricant TR451 0.2kg.

[0038] The preparation method of the high-temperature-resistant boiled polypropylene composite material is the same as that in Example 1.

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Abstract

The invention provides a high-temperature-boiling-resistant polypropylene composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 20 to 70 parts of metallocene polypropylene (mPP), 10 to 40 parts of high-crystalline polypropylene, 5 to 20 parts of crystalline POE (Polyolefin Elastomer), 5 to 25 parts of mineral powder, 0.8 to 1.5 parts of carbon black master batch, 0.1 to 0.6 part of antioxidant, 0.1 to 0.2 part of lubricant and 0.1 to 0.2 part of acid remover. According to the high-temperature-boiling-resistant polypropylene composite material disclosed by the invention, blended PP which has the characteristics of high flowability, narrow molecular weight distribution, high crystallization, low content of small molecular weight and low residual quantity of a metallocene catalyst and is obtained by adopting a method for blending mPP with quite narrow molecular weight distribution and a small amount of high-crystallization PP (47-50%) is used as a novel PP matrix of the high-temperature-boiling-resistant polypropylene composite material disclosed by the invention; the other components and the auxiliaries are added in the same way.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a high-temperature-resistant boiled polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene composite materials for automotive exterior parts are mainly made of automobile bumper bodies, grilles, wheel eyebrows, side beams, etc. by injection molding, and finished products are obtained by spraying primer, topcoat, and varnish. These spray-painted exterior parts often encounter water (such as muddy water, rainwater, dew, etc.), and thus appear loss of light, peeling, wrinkling, and blistering. Therefore, the high temperature water boiling test of the substrate and coating is an important indicator for evaluating painted parts. There are currently four effective test methods for high temperature water boiling resistance of coatings: test method of immersion in water at room temperature 23°C (240h), test method of im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08K13/02C08K5/13C08K5/526C08K3/34C08K3/04
CPCC08L23/12C08L2205/035C08L2201/08C08L2205/025C08L23/0815C08K13/02C08K5/13C08K5/526C08K3/34C08K3/04
Inventor 李欣李晟徐昌竹张海洋张春怀张栋玮钱文轩
Owner TIANJIN KINGFA NEW MATERIAL
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