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Polyamide thermofuse with low melting point and preparation method thereof

A low-melting, hot-melt filament technology, applied in rayon manufacturing, single-component polyamide rayon, fiber chemical characteristics, etc. problems, to achieve high strength and elongation, improve polymerization rate and quality, and accelerate the effect of polymerization rate

Active Publication Date: 2020-04-28
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the thermal fuses currently on the market have relatively high strength and elongation, but after prolonged exposure to ultraviolet rays, the strength and elongation of these thermal fuses will be greatly reduced, which greatly limits the thermal fuse. scope of use

Method used

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  • Polyamide thermofuse with low melting point and preparation method thereof
  • Polyamide thermofuse with low melting point and preparation method thereof
  • Polyamide thermofuse with low melting point and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Preparation of N-benzyl-4-trifluoromethylphenylmethylamine:

[0039] Under nitrogen protection, N-benzyl-4-trifluoromethylbenzamide (0.5mmol), pinacol borane (4.0mmol), rare earth catalyst bis Trimethylsilylamino yttrium (0.05mmol) was stirred and mixed; after mixing evenly, reacted at a temperature of 120°C for 23h to obtain N-benzyl-4-trifluoromethylphenylmethylamine;

[0040] Characterization data: 1 H NMR (CDCl 3 ,500MHz,ppm):δ7.60(d,J=8.0Hz,2H),7.47(d,J=8.0Hz,2H),7.38-7.33(m,4H),7.31-7.26(m,1H), 3.86(s,2H),3.82(s,2H),1.76(brs,1H). 13 C NMR (CDCl 3,125MHz,ppm):δ144.6,140.1,129.3(q,J=32.3Hz),128.5,128.3,128.2,127.0,125.2(q,J=3.8Hz),124.4(q,J=271.9Hz),53.2, 52.6. The structural formula of N-benzyl-4-trifluoromethylphenylmethylamine is Its reaction formula is:

[0041]

Embodiment 2

[0043] A low-melting nylon hot-melt yarn, comprising the following components by weight:

[0044] 100 parts of polybasic acid;

[0045] 80 parts of polyamine;

[0046] 15 parts of modifier;

[0047] 2 parts of palladium catalyst;

[0048] 3 parts of dispersant;

[0049] Anti-aging agent 2 parts;

[0050] 1 part of defoamer;

[0051] Described polybasic acid is the mixture of oxalic acid, sebacic acid and dodecanedioic acid, and its mass ratio is 1:4:2;

[0052] The polyamine is a mixture of decanediamine, 12-lactam and N-(3-aminopropyl)-N-dodecyl-1,3-propanediamine, the mass ratio of which is 3:1:1.

[0053] The modifier is a mixture of N-benzyl-4-trifluoromethylphenylmethylamine and 4,4'-diaminodiphenyl ether, and its mass ratio is 1:1;

[0054] The structural formula of the 4,4'-diaminodiphenyl ether is

[0055] The N-benzyl-4-trifluoromethylphenylmethanamine is prepared from Example 1.

[0056] The palladium catalyst is two (dibenzylideneacetone) palladium;

[0...

Embodiment 3

[0069] A low-melting nylon hot-melt yarn, comprising the following components by weight:

[0070] 100 parts of polybasic acid;

[0071] 80 parts of polyamine;

[0072] 12 parts of modifier;

[0073] 1 part of palladium catalyst;

[0074] 2 parts of dispersant;

[0075] 1 part anti-aging agent;

[0076] 1 part of defoamer;

[0077] Described polybasic acid is the mixture of oxalic acid, sebacic acid and dodecanedioic acid, and its mass ratio is 1:4:2;

[0078] The polyamine is a mixture of decanediamine, 12-lactam and N-(3-aminopropyl)-N-dodecyl-1,3-propanediamine, the mass ratio of which is 3:1:1.

[0079] The modifier is a mixture of N-benzyl-4-trifluoromethylphenylmethylamine and 4,4'-diaminodiphenyl ether, and its mass ratio is 1:1;

[0080] The structural formula of the 4,4'-diaminodiphenyl ether is The N-benzyl-4-trifluoromethylphenylmethanamine is prepared from Example 1.

[0081] The palladium catalyst is tris(dibenzylideneacetone)dipalladium.

[0082] The di...

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Abstract

The invention discloses polyamide thermofuse with a low melting point and a preparation method thereof. A polymerization reaction is conducted by using polyatomic acid and polyamine as reagents, and meanwhile auxiliaries such as modifier, palladium catalyst and defoamer are added; the polyatomic acid is the mixture of oxalic acid, sebacic acid and dodecanedioic acid; the polyamine is the mixture of decamethylene diamine, PA-12 and N-(3-aminopropyl)-N-dodecyl-1; the modifier is the mixture of N-benzyl-4-trifluoromethyl phenylmethylamine and 4,4'-diaminodiphenyl ether; the palladium catalyst isbis(dibenzylideneacetone)palladium or tris(dibenzylideneacetone)dipalladium; and the defoamer is polydimethylsiloxane or ethylene glycol siloxane. The prepared thermofuse has the low melting point, and meanwhile has large intensity and elongation, still has the large intensity and elongation even being irradiated with ultraviolet light for a long time, and can meet actual needs of production and life.

Description

technical field [0001] The invention relates to the technical field of new materials, and more specifically relates to a low-melting-point nylon thermal fuse and a preparation method thereof. Background technique [0002] Thermal fuse, also known as low-melting fiber, is one of the fastest-growing functional fibers in recent years. There are two types of thermal fuses: polyester thermal fuse and nylon thermal fuse. The melting point can be controlled between 85°C and 180°C by adjusting the characteristics of the raw material. At normal temperature, weave the thermal fuse and other fibers into a fabric, and then apply pressure to the fabric under dry heat or humid heat. When the temperature is higher than the melting point of the thermal fuse, the thermal fuse gradually melts. At this temperature, conventional other fibers remain unchanged and are thus bonded together by thermal fuses. [0003] By using thermal fuse to replace chemical adhesives such as glue, it avoids the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10C08G69/40C08G69/42
CPCD01F6/90D01F1/10C08G69/40C08G69/42
Inventor 张伟禄陈文健刘若望樊宏斌
Owner WENZHOU UNIVERSITY
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