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Polyurethane-containing low-density high-pressure polyethylene protective film and preparation method thereof

A high-pressure polyethylene, low-density technology, applied in the direction of polyurea/polyurethane adhesives, film/sheet adhesives, adhesive types, etc., can solve the problems of increasing cost input and reducing production efficiency, and achieve Inexpensive, good elongation, and good extrudability

Active Publication Date: 2011-12-14
NINGBO TAIYONG AUTOMOTIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this requires additional tooling and equipment, which will inevitably increase cost input and reduce production efficiency.

Method used

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  • Polyurethane-containing low-density high-pressure polyethylene protective film and preparation method thereof
  • Polyurethane-containing low-density high-pressure polyethylene protective film and preparation method thereof
  • Polyurethane-containing low-density high-pressure polyethylene protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the low-density high-pressure polyethylene protective film containing polyurethane comprises the following components and weight ratio: polyurethane 35, low-density high-pressure polyethylene 47.3, Irganox 1010 0.2, PE-520 wax powder 2.5, polyethylene grafted Malay Anhydride 15.

[0026] The preparation method of protective film, comprises the steps:

[0027] ①Add each component into the mixer and stir, the stirring speed is 110U / min~130U / min, and the stirring time is 4~8 minutes;

[0028] ② Put the stirred material into the barrel 1 of the twin-screw extruder and extrude it through the extrusion channel 2 and the head 3 in sequence. The extrusion channel of the extruder is divided into five areas, area 1 21, area 2 The temperature control conditions for zone two 22, zone three 23, zone four 24 and zone five 25 are 160°C to 170°C, 170°C to 180°C, 180°C to 190°C, 190°C to 200°C, 195°C to 205°C, and The temperature control condition of extruder head 3 is 1...

Embodiment 2

[0030] Embodiment 2: The low-density high-pressure polyethylene protective film containing polyurethane comprises the following components and weight ratio: polyurethane 25, low-density high-pressure polyethylene 65, antioxidant AT-300 0.1, PE-520 wax powder 3, polyethylene Grafted maleic anhydride 20. The preparation method refers to Example 1.

Embodiment 3

[0031] Example 3: The low-density high-pressure polyethylene protective film containing polyurethane includes the following components and weight ratio: polyurethane 40, low-density high-pressure polyethylene 40, antioxidant 1076 0.3, polyethylene wax CH-2A 2, acrylic acid 10. The preparation method refers to Example 1.

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Abstract

The invention relates to a low-density high-pressure polyethylene protective film containing polyurethane. The protective film is characterized by comprising the following components in part by weight: 25 to 50 parts of polyurethane, 40 to 70 parts of low-density high-pressure polyethylene, 0.1 to 0.3 part of hindered phenol antioxidant, 2 to 3 parts of polyethylene wax lubricant and 10 to 20 parts of compatilizer. The invention also discloses a preparation method for the protective film. Compared with the prior art, the protective film has the advantages that: by an appropriate formula and blending modification of the materials, the adhesive force of the low-density high-pressure polyethylene and polyvinyl chloride in the coextrusion forming process is improved, and paint is not dropped before being sprayed; and thus, the production efficiency is improved, and the rejection rate of products is reduced.

Description

technical field [0001] The invention relates to a protective film of low-density high-pressure polyethylene. When the polyvinyl chloride elastomer is sprayed with paint, the protective film is extruded at high temperature and adhered to the protective part that does not need to be sprayed. After the spraying is completed, the protective film can be torn off. membrane. The invention also discloses a preparation method of the protective film. Background technique [0002] Some decorative sealing strips of automobiles need to use polyvinyl chloride materials in the design process. Some high-end cars need to spray paint on the sealing strips made of polyvinyl chloride in order to achieve an aesthetic effect. If the sealing part of the sealing strip is not protected, all parts of the sealing strip will be sprayed with paint during the paint spraying process. After the sealing part of the sealing strip is sprayed with paint, the polyvinyl chloride will become very hard. The func...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/06C09J175/04C09J127/06C09J7/00B29C47/92B29C48/92
Inventor 蒋奇斌胡益男
Owner NINGBO TAIYONG AUTOMOTIVE PARTS
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