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Grafted polyolefin resin modified polyamide hot melt adhesive and preparation method thereof

A polyamide hot-melt adhesive and grafted polyolefin technology, which is applied in adhesives and other directions, can solve the problems of hot-melt adhesive peeling strength decrease, hydrophobic treated fabrics with poor bonding performance, etc., and achieve environmental protection, pollution-free and good adhesion during the preparation process. High, the effect of improving mechanical properties

Inactive Publication Date: 2018-07-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the current hot melt adhesive has good bonding performance to non-hydrophobic treated fabrics, the bonding performance to hydrophobic treated fabrics is poor
After washing with water, the peel strength of hot melt adhesive decreased significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the present embodiment comprises the following steps:

[0023] A, 20% succinic acid by weight percentage, 20% hexamethylene diamine and decane diamine mixture, 30% grafted polyolefin resin by weight percentage, 30% dimer acid and catalyst are added to a In a stainless steel pressure reactor with a stirrer, a thermometer and a pressure gauge, then add an appropriate amount of water;

[0024] B. Replace with nitrogen and evacuate to remove the air in the reactor, and then fill it with 0.2MPa high-purity nitrogen;

[0025] C. Heat up slowly to 220°C, under 1.0MPa pressure, keep warm for 1 hour;

[0026] D. Slowly release the pressure to normal pressure, continue to depressurize to 0.05MPa, dehydrate to a suitable molecular weight, discharge and cut into pellets to obtain granular polyamide hot melt adhesive.

Embodiment 2

[0028] The preparation method of the present embodiment comprises the following steps:

[0029] A, 30% adipic acid by weight percentage, 10% decanediamine and dodecanediamine, 30% grafted polyolefin resin by weight percentage, 30% dimer acid and catalyst added by weight percentage A stainless steel pressure reactor with a stirrer, temperature gauge and pressure gauge, and then add an appropriate amount of water;

[0030] B. Replace with nitrogen and evacuate to remove the air in the reactor, and then fill it with 0.2MPa high-purity nitrogen;

[0031] C. Heat up slowly to 250°C, under 1.2MPa pressure, keep warm for 2 hours;

[0032] D. Slowly release the pressure to normal pressure, continue to depressurize to 0.05MPa, dehydrate to a suitable molecular weight, discharge and cut into pellets to obtain granular polyamide hot melt adhesive.

Embodiment 3

[0034] The preparation method of the present embodiment comprises the following steps:

[0035] A, the weight percentage is 22% adipic acid and 2-methyl adipic acid mixture, the weight percentage is 23% 2-methylpentamethylenediamine, the weight percentage is 35% grafted polyolefin resin, and the weight percentage is 20% % dimer acid and catalyst join in a stainless steel pressure reactor with agitator, temperature gauge and pressure gauge, then add appropriate amount of water;

[0036] B. Replace with nitrogen and evacuate to remove the air in the reactor, and then fill it with 0.2MPa high-purity nitrogen;

[0037] C. Heat up slowly to 225°C, and keep it warm for 1.1 hours under a pressure of 1.1MPa;

[0038] D. Slowly release the pressure to normal pressure, continue to depressurize to 0.05MPa, dehydrate to a suitable molecular weight, discharge and cut into pellets to obtain granular polyamide hot melt adhesive.

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PUM

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Abstract

The invention discloses a grafted polyolefin resin modified polyamide hot melt adhesive and a preparation method thereof. The hot melt adhesive is prepared from raw materials in percentage by weight as follows: 20%-30% of binary acid, 10%-30% of aliphatic diamine, 20%-40% of grafted polyolefin resin and 10%-30% of dimer acid. The preparation process is simple, the preparation process is environmentally friendly and pollution-free, and the prepared polyamide hot melt adhesive has excellent high-temperature resistance and water resistance and high adhesion.

Description

technical field [0001] The invention relates to the technical field of polyamide hot-melt adhesive preparation, in particular to a polyamide hot-melt adhesive modified with grafted polyolefin resin and a preparation method thereof. Background technique [0002] Hot melt adhesive is a one-component, anhydrous, solvent-free, solid adhesive at room temperature, it acts on the surface of the adherend in a molten state, and solidifies rapidly under cooling to form a bond; as An environmentally friendly adhesive, in textile manufacturing, it has been widely used for bonding between garment lining and fabric for a long time, which not only reduces the cost and greatly improves work efficiency, but also makes the garment durable, straight and round. Specific clothing manufacturing and use conditions require that hot melt adhesives for clothing have good washing resistance, that is, good solvent resistance during dry cleaning and good water resistance during wet cleaning. A qualifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J177/06C08G69/34
CPCC09J177/06C08G69/34
Inventor 储微微
Owner 储微微