Unlock instant, AI-driven research and patent intelligence for your innovation.

Low-temperature hot melt adhesive and preparation method thereof

A technology of low-temperature heat and melt adhesive, which is applied in the direction of adhesives, mechanical equipment, adhesive types, etc., can solve the problems that cannot meet the requirements of pipeline anti-corrosion, the embrittlement temperature is higher than -10°C, and the adhesive performance declines, etc., to achieve Good peel strength and workability, good reactivity, low embrittlement temperature effect

Active Publication Date: 2013-03-13
成都长江热缩材料有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adhesive performance of EVA resin decreases rapidly at low temperature (below -10°C), and its embrittlement temperature is higher than -10°C according to the standard test of GB / T23257-2009 "Buried Steel Pipeline Polyethylene Anticorrosion Coating" , does not meet the requirements of the standard below -15 ℃
Loss of stability at high temperature (60°C and above), making it unable to meet the requirements of pipeline anticorrosion in high temperature and low temperature environments

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Component ratio (percentage by weight) of low temperature hot melt adhesive:

[0034] Ethylene octene copolymer elastomer 35;

[0035] Ethylene-butyl acrylate copolymer 14;

[0036] Terpene phenolic resin 35;

[0037] Ethylene-acrylate-maleic anhydride copolymer 15;

[0038] Antioxidant 1.

[0039] Among them, the melt index of the ethylene octene copolymer elastomer is 13g / 10min, the melting point is 56°C, and the glass transition temperature is -55°C; the ethylene-butyl acrylate copolymer has a Vicat softening point of less than 40°C and a melt index of 35~45g / 10min; ethylene-acrylate-maleic anhydride copolymer, Vicat softening point is 66°C; terpene phenol resin, ring and ball softening point is 90~100°C.

[0040] Preparation: According to the above proportions, first take ethylene octene copolymer elastomer, ethylene-butyl acrylate copolymer, terpene phenol resin, and antioxidant materials and add them to the kneader. When the temperature of the kneader rise...

Embodiment 2

[0042] Component ratio (percentage by weight) of low temperature hot melt adhesive:

[0043] Ethylene octene copolymer elastomer 25;

[0044] Ethylene-butyl acrylate copolymer 24;

[0045] Terpene phenolic resin 35;

[0046] Ethylene-acrylate-maleic anhydride copolymer 15;

[0047] Antioxidant 1.

[0048] Among them, the melt index of the ethylene octene copolymer elastomer is 13g / 10min, the melting point is 56°C, and the glass transition temperature is -55°C; the ethylene-butyl acrylate copolymer has a Vicat softening point of less than 40°C and a melt index of 35~45g / 10min; ethylene-acrylate-maleic anhydride copolymer, Vicat softening point is 66°C; terpene phenol resin, ring and ball softening point is 90~100°C.

[0049] Preparation: According to the above proportions, first take ethylene octene copolymer elastomer, ethylene-butyl acrylate copolymer, terpene phenol resin, and antioxidant materials and add them to the kneader. When the temperature of the kneader rise...

Embodiment 3

[0051] Component ratio (percentage by weight) of low temperature hot melt adhesive:

[0052]Ethylene octene copolymer elastomer 15;

[0053] Ethylene-butyl acrylate copolymer 34;

[0054] Terpene phenolic resin 35;

[0055] Ethylene-acrylate-maleic anhydride copolymer 15;

[0056] Antioxidant 1.

[0057] Among them, the melt index of the ethylene octene copolymer elastomer is 13g / 10min, the melting point is 56°C, and the glass transition temperature is -55°C; the ethylene-butyl acrylate copolymer has a Vicat softening point of less than 40°C and a melt index of 35~45g / 10min; ethylene-acrylate-maleic anhydride copolymer, Vicat softening point is 66°C; terpene phenol resin, ring and ball softening point is 90~100°C.

[0058] Preparation: According to the above proportions, first take ethylene octene copolymer elastomer, ethylene-butyl acrylate copolymer, terpene phenol resin, and antioxidant materials and add them to the kneader. When the temperature of the kneader is ra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melt flow indexaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
melt flow indexaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-temperature hot melt adhesive and a preparation method thereof, and the low-temperature hot melt adhesive comprises the following components by weight: 28-70 parts of matrix resins, 20-46 parts of tackifying resins, 10-25 parts of maleic anhydride graft copolymers, 0.5-2 parts of anti-oxidants; the matrix resin comprises 20-50 parts by weight of ethylene-octene copolymer elastomers, and 50-80 parts by weight of ethylene-butyl acrylate or methacrylate copolymers. By using a mixing method, the raw materials are mixed in a kneader. The low-temperature hot melt adhesive obtained by the formula and the method of the invention has a low brittle temperature, good bonding performance, good sealing performance, stable performance, a simple process, and low cost, is applicable to the field of metal pipeline repaired mouth anticorrosion, and has very good economic benefit and industrial production prospects.

Description

technical field [0001] The invention belongs to the technical field of hot-melt adhesives, and in particular relates to a low-temperature hot-melt adhesive and a preparation method thereof. Background technique [0002] Hot-melt adhesives are known as "green" adhesives because they are solvent-free, pollution-free, fast curing, and good process performance. They have been widely used in the field of pipeline joint anticorrosion in recent years. With the continuous improvement of technical requirements, not only hot-melt adhesives are required to have good bonding performance, but also high reliability and good on-site construction performance in low-temperature environments are required. [0003] Traditional pipeline anti-corrosion hot-melt adhesives are often prepared using ethylene-vinyl acetate copolymer (EVA resin) as a base material. EVA resin is often used as a base material for hot-melt adhesives because of its excellent bonding performance and suitable fluidity at ro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/08C09J145/00C09J193/04C09J157/02C09J151/00C09J151/06F16L58/18
Inventor 穆宏荣王军
Owner 成都长江热缩材料有限公司