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Cross-linking modified copolyamide hot melt adhesive net film, preparation method and use method thereof

A technology of copolyamide and crosslinking modification, which is applied in one-component copolyamide rayon, chemical instruments and methods, textiles and papermaking, etc. Reticle and other problems, to achieve the effect of improving adhesion performance and heat resistance, improving crosslinking speed and degree, and improving impact resistance and thermal performance

Active Publication Date: 2021-06-04
SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, patent CN103805124B discloses a preparation method of a low-temperature-resistant copolyamide hot-melt adhesive, which mainly consists of dimer acid-type copolyamide hot-melt adhesive and its grafted derivatives, cross-linking rubber, cross-linking agent and auxiliary agent Composition, in which the main body of the cross-linking agent is a peroxide cross-linking agent, the only component that actually undergoes cross-linking reaction in this system is the rubber component for cross-linking, the copolyamide hot melt adhesive does not produce cross-linking reaction, and the cross-linking Rubber and copolyamide hot melt adhesives still have compatibility problems, which are difficult to popularize in practical applications; at the same time, due to the low crosslinking reaction temperature, the modified copolyamide hot melt adhesive is not suitable for making omentum
[0005] Furthermore, copolyamide hot-melt adhesives are different from polyolefin or EVA hot-melt adhesives. The cross-linking agents and additives commonly used in the latter two are not suitable for the curing modification of the former.

Method used

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  • Cross-linking modified copolyamide hot melt adhesive net film, preparation method and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Cross-linked modified copolyamide hot-melt adhesive omentum, its raw material composition is calculated in parts by mass, including: 100 parts of copolyamide matrix resin (its melting point is 120°C, melting index is 25g / 10min, translucent particles), crosslinking agent 3 Parts (specifically glycerin polyglycidyl ether), the crosslinking agent and water are mixed at a mass ratio of 1:10 to form a crosslinking agent aqueous solution.

[0031] The preparation method of cross-linked modified copolyamide hot-melt adhesive omentum, the steps are as follows:

[0032] (1) After the above-mentioned copolyamide hot-melt adhesive matrix resin is melted, pump it into two independent first spinnerets and second spinnerets respectively. The temperature of the heat transfer oil of the two spinnerets is 200°C, and the distance between them is 2m. When the conveyor belt is working, adjust its transmission speed to 10m / min;

[0033] (2) The first spinneret is opened, and the copolyamid...

Embodiment 2

[0039] The cross-linked modified copolyamide hot-melt adhesive omentum, its raw material composition is counted in parts by mass, including: 100 parts of copolyamide matrix resin (its melting point is 130°C, melting index is 60g / 10min, translucent particles), crosslinking agent 6 parts (specifically sorbitol polyglycidyl ether), the crosslinking agent and water are mixed at a mass ratio of 1:8 to form a crosslinking agent aqueous solution.

[0040] The preparation method of cross-linked modified copolyamide hot-melt adhesive omentum, the steps are as follows:

[0041] (1) After the above-mentioned copolyamide hot-melt adhesive matrix resin is melted, pump it into two mutually independent first spinneret and second spinneret respectively. The temperature of the heat transfer oil of the two spinnerets is 240°C, and the distance between them is 3m. When the conveyor belt is working, adjust its transmission speed to 15m / min;

[0042] (2) The first spinneret is opened, and the cop...

Embodiment 3

[0048] Cross-linked modified copolyamide hot-melt adhesive omentum, its raw material composition is calculated in parts by mass, including: 100 parts of copolyamide matrix resin (its melting point is 90°C, melting index 20g / 10min, translucent particles), crosslinking agent 4 Parts (specifically trimethylolpropane polyglycidyl ether), the cross-linking agent and water are mixed at a mass ratio of 1:5 to form an aqueous solution of the cross-linking agent.

[0049] The preparation method of cross-linked modified copolyamide hot-melt adhesive omentum, the steps are as follows:

[0050] (1) After melting the above-mentioned copolyamide hot-melt adhesive matrix resin, pump them into two independent first spinnerets and second spinnerets respectively. The heat transfer oil temperature of the two spinnerets is 240°C, and the distance between them is 1.5m. , the conveyor belt is working, adjust its transmission speed to 8m / min;

[0051] (2) The first spinneret is opened, and the copo...

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Abstract

The invention relates to a cross-linked and cured copolyamide hot melt adhesive net film, a preparation method and a use method thereof. The cross-linked and cured copolyamide hot melt adhesive net film is prepared from the following raw materials: a conventional copolyamide hot melt adhesive matrix resin and a cross-linking agent aqueous solution, wherein the cross-linking agent aqueous solution is a poly-epoxy compound aqueous solution, the mass ratio of the cross-linking agent to the water is 1:5-10, and the addition amount of the cross-linking agent is 3-6% of the mass of the conventional copolyamide hot melt adhesive matrix resin. According to the invention, the cross-linking agent aqueous solution suitable for the copolyamide hot melt adhesive is found, the cross-linking agent aqueous solution exists in the whole preparation process of the copolyamide hot melt adhesive net film in a special mode, and the cross-linking reaction is completed in the hot pressing process during subsequent use, so that the adhesive property and the heat resistance of the product are improved.

Description

technical field [0001] The invention relates to a copolyamide hot-melt adhesive omentum and its preparation and use method, in particular to a method of modifying a conventional thermoplastic copolyamide hot-melt adhesive omentum into a thermosetting copolyamide hot-melt adhesive omentum by means of cross-linking and curing and methods of preparation and use thereof. Background technique [0002] Hot-melt adhesive film is widely used in clothing, textiles, automobiles and electronics industries due to its advantages of no solvent, no pollution, fast curing speed and convenient use. Hot-melt adhesive omentum, according to the different hot-melt adhesive matrix resins, can be distinguished into copolyamide, copolyester, EVA, TPU and other types of hot-melt adhesive omentum. Among them, because the copolyamide matrix resin itself has good heat resistance and bonding effect, the copolyamide hot-melt adhesive web made of it is also widely welcomed by customers. [0003] However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/34B32B37/10B32B37/06B32B27/06D01F6/80D06M15/53D06M101/34
CPCB32B27/34B32B37/10B32B37/06B32B27/06D01F6/80D06M15/53D06M2101/34
Inventor 刘志远郑仁峰
Owner SHANGHAI TIANYANG HOT MELT ADHESIVE CO LTD
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