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High temperature resistant hot melt adhesive and processing process thereof

A technology of warming and melting glue, applied in the direction of adhesives, etc., can solve problems such as complex production process, achieve the effects of simple production process, avoid product purification, and good prospects for industrial production

Inactive Publication Date: 2012-07-11
HONGSHANG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adopts bulk polymerization, which is prepared through three steps of ester-amide exchange, alcoholysis and polycondensation, and the production process is relatively complicated.

Method used

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  • High temperature resistant hot melt adhesive and processing process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]Example 1: High melting point dimer acid type polyamide resin (softening point 156°C) 40g, ethylene vinyl acetate (EVA210) 20g, ethylene vinyl acetate (EVA150) 10g, ethylene vinyl acetate (EVA930) 10g, terpene Resin, antioxidant 10101g, antioxidant 10981g, antioxidant 8020.5g, polyethylene wax 0.5g, add to twin-screw extruder for mixing, mixing temperature is 120°C, mixing twice, using circulating water The high-melting point polyamide hot-melt adhesive product was obtained by cooling hob dicing. The softening point of this product was 142°C and the viscosity was 144000mpa.s.

Embodiment 2

[0050] Embodiment two: high melting point dimer acid type polyamide resin (softening point 156 ℃) 35g, ethylene ethyl acrylate (EEA) 15g, ethylene vinyl acetate (EVA930) 10g, terpene resin 30g, ethylene vinyl acetate (EVA210 ) 7g, antioxidant 10101g, antioxidant 10981g, antioxidant 8020.5g, polyethylene wax 0.5g, PA150 and EEA897 were first mixed in the internal mixer, and then all materials were added to the twin-screw extruder for Mixing, the mixing temperature is 120 °C, mixing twice, using circulating water to cool the hob and pelletizing to obtain a high melting point polyamide hot melt adhesive product, the softening point of this product is 145 °C, and the viscosity is 154000mpa.s.

Embodiment 3

[0051] Example 3: 50 g of high melting point dimer acid type polyamide resin (softening point 146° C.), 20 g of ethylene vinyl acetate (trade name EVA220, purchased from Mitsui Corporation, Japan), 10 g of ethylene vinyl acetate (EVA150,), terpene 17g of resin, 10101g of antioxidant, 10981g of antioxidant, 8020.5g of antioxidant, and 0.5g of polyethylene wax were added to the twin-screw extruder for mixing. The mixing temperature was 120°C. The high-melting point polyamide hot-melt adhesive product is obtained by water-cooling hob cutting pelletization. The softening point of this product is 149°C and the viscosity is 156000mpa.s.

[0052] The embodiment of the present invention also provides a processing technology of high temperature resistant hot melt adhesive, which includes the steps of:

[0053] A, the preparation step of material: according to the formula described in above-mentioned each embodiment, weigh the material of each component;

[0054] B. Premixing step: for...

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Abstract

The invention provides a formula of a high temperature resistant hot melt adhesive and a processing process of the hot melt adhesive. The formula comprises the following components: polyamide, an ethylene-ethyl acrylate copolymer, an ethylene-vinyl acetate copolymer, a tackifier, an antioxidant and a modifier. The high temperature resistant hot melt adhesive is high in bonding strength, resistant to high temperature, excellent in insulating and sealing performance, resistant to a low temperature, environment-friendly, non-toxic, simple in production process and good in repeatability.

Description

technical field [0001] The invention relates to the technical field of chemical materials, in particular to a high-temperature-resistant hot-melt adhesive suitable for bonding heat-shrinkable materials (PE, PP, PVC) such as communication cable plastic heat-shrinkable sleeves and petroleum sleeves, and its processing technology . Background technique [0002] The laying of communication cables, power cables, and optical cables forms various joints. The joints need to be connected and protected: oil and gas pipelines need to be covered for anti-corrosion and heat preservation at the pipe-to-pipe interface. The coating materials and methods are different, but the most convenient .The most widely used wrapping method is heat-shrinkable sleeve. [0003] Heat shrinkable material, also known as polymer shape memory material. Both the heat-shrinkable material itself and its application process have high requirements for hot-melt adhesives. First of all, when heat shrinkable mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J177/00C09J177/06C09J177/02C09J123/08
Inventor 钟晓光曾婉马玉珍
Owner HONGSHANG HEAT SHRINKABLE MATERIALS
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