阅读说明：本技术 用于纺丝的共聚酰胺热熔胶及其制备方法 (Copolyamide hot melt adhesive and preparation method thereof for spinning ) 是由 周庆伟 王俊 于 2019-09-18 设计创作，主要内容包括：本发明涉及一种热熔胶,特别涉及一种用于纺丝的共聚酰胺热熔胶及其制备方法。本发明提供了如下技术方案：一种用于纺丝的共聚酰胺热熔胶,按照重量包括有如下组分：二元胺15％-30％、二元酸32％-40％、内酰胺10％-25％、水2.4％-5％、分子量调节剂0.4％-5％、成核剂4.5％-8％、助剂0.7％-3％。采用上述技术方案,提供了一种分子量范围窄、熔点低、固化时间短、热稳定性及粘结性优异的用于纺丝的共聚酰胺热熔胶及其制备方法。(The present invention relates to a kind of hot melt adhesive, in particular to a kind of copolyamide hot melt adhesive and preparation method thereof for spinning.The present invention provides the following technical scheme that a kind of copolyamide hot melt adhesive for spinning, includes following component according to weight: diamine 15%-30%, binary acid 32%-40%, lactams 10%-25%, water 2.4%-5%, molecular weight regulator 0.4%-5%, nucleating agent 4.5%-8%, auxiliary agent 0.7%-3%.By adopting the above technical scheme, the copolyamide hot melt adhesive for spinning and preparation method thereof that a kind of molecular weight ranges are narrow, fusing point is low, curing time is short, thermal stability and caking property are excellent is provided.)

1. a kind of copolyamide hot melt adhesive for spinning, which is characterized in that according to weight include following component: diamine 15%-30%, binary acid 32%-40%, lactams 10%-25%, water 2.4%-5%, molecular weight regulator 0.4%-5%, Nucleating agent 4.5%-8%, auxiliary agent 0.7%-3%.

2. the copolyamide hot melt adhesive according to claim 1 for spinning, it is characterised in that: the binary acid is certainly Any one in Ji bis- Suan ﹑ Gui bis- Suan ﹑ Hun He Suan ﹑ Shi mono- Suan ﹑ Shi bis- Suan ﹑ tetradecylic acid.

3. the copolyamide hot melt adhesive according to claim 1 or 2 for spinning, it is characterised in that: the molecular weight Regulator is monocarboxylic acid.

4. the copolyamide hot melt adhesive according to claim 1 or 2 for spinning, it is characterised in that: the nucleating agent It is talcum powder, calcium carbonate, silica, alum, titanium dioxide, calcium oxide, magnesia, carbon black, mica for inorganic nucleator In any one.

5. the copolyamide hot melt adhesive according to claim 1 or 2 for spinning, it is characterised in that: the lactams The cyclic amino acid for being 6-12 for carbon atom number.

6. the copolyamide hot melt adhesive according to claim 1 or 2 for spinning, it is characterised in that: the diamine Aliphatic diamine selected from carbon atom number 6-10.

7. the copolyamide hot melt adhesive according to claim 1 or 2 for spinning, it is characterised in that: the auxiliary agent is to increase Stick.

8. a kind of preparation method for the copolyamide hot melt adhesive for spinning that the component using in claim 1 is implemented, special Sign is that steps are as follows: a, preparing raw material diamine, binary acid, lactams, water, molecular weight regulator, nucleating agent, auxiliary agent；b, The raw material prepared in step a is proportionally put into polymerization reaction kettle and is stirred and reacts；C, step b is completed into reaction original It is filled with nitrogen in the reaction kettle of material, and the air in replacement reaction kettle, the raw material in reaction kettle is promoted to implement polymerization reaction；D, will Vacuum is extracted in the reaction kettle inner cavity that polymerization reaction raw material is completed in step c, promotes raw material dehydration and forms low-molecular weight polymer； E, the copolymer for completing to be dehydrated and formed low-molecular weight polymer in step d is cut into particle by granulate equipment；F, by step e The particle of middle formation is dried in vacuo, and copolyamide hot-melt adhesive granules are obtained.

9. the preparation method of the copolyamide hot melt adhesive according to claim 8 for spinning, it is characterised in that: described Reaction temperature in step b is 80 DEG C -100 DEG C, and mixing time is 2h -3h；Reaction temperature is 220 in the step c DEG C -240 DEG C, the reaction time is 2h -3h；The reaction temperature vacuumized in the step d is 220 DEG C -240 DEG C, vacuum degree For -0.095MPa--0.1MPa, the pumpdown time is 2h -4h；In the step f be dried in vacuo after moisture content be 100ppm or less.

10. the preparation method of the copolyamide hot melt adhesive according to claim 8 for spinning, it is characterised in that: described Step c in the pressure of nitrogen is filled in reaction kettle is 0.05MPa -0.1MPa.

Technical field

It is the present invention relates to a kind of hot melt adhesive, in particular to a kind of for the copolyamide hot melt adhesive of spinning and its preparation side Method.

Background technique

Copolyamide hot melt adhesive is a kind of common hot-melt adhesive, there is excellent adhesive strength, water-fastness, heat-resisting Property and solvent resistance, are very important a kind of hot melt adhesion material.But common copolyamide hot melt adhesive on the market at present, Its as membranaceous, strip or filamentous form in use, its internal molecular weight ranges is wider, as spinning in use, its The viscosity of spin fluid is more difficult to control.And fusing point is high, and curing time is long, causes its adhesive property uncontrollable, and increase The production time of spinning, reduce production efficiency.

Summary of the invention

That in view of the deficiencies of the prior art, the present invention provides a kind of molecular weight ranges is narrow, fusing point is low, curing time Short, thermal stability and the excellent copolyamide hot melt adhesive and preparation method thereof for spinning of caking property.

To achieve the above object, the present invention provides the following technical scheme that a kind of copolyamide hot melt adhesive for spinning, It is characterized in that, including following component according to weight: diamine 15%-30%, binary acid 32%-40%, lactams 10%- 25%, water 2.4%-5%, molecular weight regulator 0.4%-5%, nucleating agent 4.5%-8%, auxiliary agent 0.7%-3%.

Wherein, binary acid is from any one in mixed conjunction 11 acid ﹑ of acid ﹑, the 12 acid ﹑ tetradecylic acid of two acid ﹑ of the adipic acid ﹑ last of the ten Heavenly stems Kind.Molecular weight regulator is monocarboxylic acid.

Nucleating agent is inorganic nucleator, is talcum powder, calcium carbonate, silica, alum, titanium dioxide, calcium oxide, oxygen Change magnesium, carbon black, any one in mica.

Lactams is the cyclic amino acid that carbon atom number is 6-12.

Diamine is selected from the aliphatic diamine of carbon atom number 6-10.

Auxiliary agent is tackifier.

By adopting the above technical scheme, copolyamide hot melt adhesive fusing point obtained is in 110-140 DEG C of model

It encloses, molecular weight regulator controls the molecular weight of copolyamide hot melt adhesive, controls the viscosity of spin fluid；Nucleating agent can promote Into copolyamide hot melt adhesive crystallization of fluids, improve the curing time of copolyamide hot melt adhesive fluid；PE wax and erucyl amide shorten The open hour of copolyamide hot melt adhesive；Copolyamide hot-melt adhesive granules moisture content produced by the present invention is low, and thermal stability is excellent Different, spinnability is high, can be with high speed spinning, and adhesive property is excellent.

Specific embodiment

The present invention is a kind of copolyamide hot melt adhesive for spinning, includes following component: diamine according to weight 15%-30%, binary acid 32%-40%, lactams 10%-25%, water 2.4%-5%, molecular weight regulator 0.4%-5%, Nucleating agent 4.5%-8%, auxiliary agent 0.7%-3%.Wherein, binary acid is to close 11 acid ﹑ ten of acid ﹑ from two acid ﹑ of the adipic acid ﹑ last of the ten Heavenly stems is mixed Any one in Er Suan ﹑ tetradecylic acid.Molecular weight regulator is monocarboxylic acid.Nucleating agent is inorganic nucleator, be talcum powder, Calcium carbonate, silica, alum, titanium dioxide, calcium oxide, magnesia, carbon black, any one in mica.Lactams is carbon Atomicity is the cyclic amino acid of 6-12.Diamine is selected from the aliphatic diamine of carbon atom number 6-10.Auxiliary agent is tackifier.

In the embodiment of the present invention 1, the preparation method is as follows: having blender, air inlet pipe, exhaust pipe, temperature and pressure In the autoclave pressure of test device, it is added hexamethylene diamine (298.5g), 2-making methylpentamethylenediamine diamines (140g), adipic acid (81.8g), 11 Sour (392.4g), tetradecylic acid (360.8g), caprolactam (740.7g), deionized water (60g), titanium dioxide (60g), PE wax (10g), stearic acid (15g), after raw material is put into, then inflated with nitrogen 0.1Mpa slowly empties to normal pressure, replace kettle repeatedly three times Interior air eliminates, and in temperature-rise period, for material just after polymerization reaction exiting water process, polymerization reaction kettle rushes nitrogen protection, polymerization Reactor pressure control is 220-240 DEG C in 0.05MPa-0.1MPa, reaction temperature control, reaction time 2-4h；Polymerization is anti- Answer kettle to vacuumize, the control of polymeric kettle material reaction temperature is 220-240 DEG C, vacuum degree control in -0.095MPa--0.1MPa, Pumpdown time is 2-4h, and dehydration discharges after removing molecular weight polymers, obtains the polyamide hot that fusing point is 110 ~ 115 DEG C.

In the embodiment of the present invention 2, the preparation method is as follows: having blender, air inlet pipe, exhaust pipe, temperature and pressure In the autoclave pressure of test device, it is added hexamethylene diamine (358.5g), 2-making methylpentamethylenediamine diamines (80.0g), adipic acid (425.8g), the last of the ten Heavenly stems Diacid (400g), decamethylene diamine (192.6g), caprolactam (450.6g), titanium dioxide (80g), PE wax (8g), stearic acid (12g), After raw material investment, then inflated with nitrogen 0.1Mpa slowly empties to normal pressure, replace and three times eliminate air in kettle repeatedly, heated up Cheng Zhong, for material just after polymerization reaction exiting water process, polymerization reaction kettle rushes nitrogen protection, and the control of polymerization reaction kettle pressure exists 0.05MPa-0.1MPa, reaction temperature control are 220-240 DEG C, reaction time 2-4h；Polymerization reaction kettle vacuumizes, polymeric kettle The control of material reaction temperature is 220-240 DEG C, vacuum degree control in -0.095MPa--0.1MPa, pumpdown time 2-4h, Dehydration, discharges after removing molecular weight polymers, obtains the polyamide hot that fusing point is 125-130 DEG C.

In the embodiment of the present invention 3, the preparation method is as follows: having blender, air inlet pipe, exhaust pipe, temperature and pressure In the autoclave pressure of test device, it is added hexamethylene diamine (263.6g), 2-making methylpentamethylenediamine diamines (174.9g), adipic acid (154.4g), the last of the ten Heavenly stems Diacid (316.8g), undecanoic acid (248.7g), caprolactam (757.7g), 10000 mesh of talcum powder (150g), erucyl amide (2g), stearic acid (13g), after raw material is put into, then inflated with nitrogen 0.1Mpa slowly empties to normal pressure, replace kettle repeatedly three times Interior air eliminates, and in temperature-rise period, for material just after polymerization reaction exiting water process, polymerization reaction kettle rushes nitrogen protection, polymerization Reactor pressure control is 220-240 DEG C in 0.05MPa-0.1MPa, reaction temperature control, reaction time 2-4h；Polymerization is anti- Answer kettle to vacuumize, the control of polymeric kettle material reaction temperature is 220-240 DEG C, vacuum degree control in -0.095MPa--0.1MPa, Pumpdown time is 2-4h, and dehydration discharges after removing molecular weight polymers, obtains the polyamide hot that fusing point is 100-105 DEG C.

The correlated performance test table of the embodiment of the present invention 1-3 is as follows.

Index	Embodiment 1	Embodiment 2	Embodiment 3
				Fusing point DEG C	110℃	125℃	130℃
Melt and refers to min	10.0g/10min	4.0g/10min	6.0g/10min
				Open hour min	1.0min	1.0min	0.8min