Environment-friendly water-based film waterproof zipper and preparation method thereof

Abstract

The invention relates to the field of zipper preparation, in particular to an environment-friendly water-based film waterproof zipper and a preparation method thereof.Raw materials are upgraded into environment-friendly water-based polyurethane materials, an original hot laminating technology is changed into a cold laminating technology, and by adjusting the raw materials and the technology, the high and low temperature resistance of the environment-friendly water-based film waterproof zipper can reach-40 DEG C to 200 DEG C; the folding resistance, scratch resistance, wear resistance and other properties are greatly improved, and the environmental protection performance is improved, so that export standards can be better met.

Description

Technical Field

[0001] The invention relates to the field of zipper preparation, and in particular to an environmentally friendly water-based film waterproof zipper and a preparation method thereof. Background Art

[0002] Zippers are one of the most important accessories for clothing. Zippers are connectors that connect or separate items by means of continuously arranged chain teeth. They are mainly composed of chain teeth, sliders, zipper fabrics, etc., and are widely used in clothing, bags, and other products. With the development of technology, waterproof zippers have emerged. Waterproof zippers can maintain good waterproof effects in rainy or humid environments, protecting internal items from moisture. Currently, waterproof zippers are widely used in outdoor equipment, rain gear, water sports equipment, and other fields.

[0003] The waterproof zippers on the market mainly use waterproof film lamination technology, that is, laminating the waterproof film on the zipper, and the thermal lamination technology is used for lamination. The waterproof film is attached to the surface of the zipper by using hot air blowing and high-temperature melting hot melt adhesive. The disadvantage is that with the industrial upgrading and process upgrading of the garment processing industry, more and more garment factories no longer use sewing technology, but use seamless hot pressing technology instead. The waterproof zippers produced by thermal lamination technology cannot maintain relatively good use functions under high temperature and hot pressing conditions. In addition, due to the international environmental protection requirements for the import and export of related auxiliary materials, the content of related elements in many raw materials required for the production of thermal lamination technology exceeds the standard, which does not meet the requirements of environmental protection. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems mentioned in the background technology. The present invention provides an environmentally friendly water-based film waterproof zipper and a preparation method thereof. The raw materials are environmentally friendly and the process can completely adopt cold bonding technology.

[0005] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions: The utility model relates to an environmentally friendly water-based membrane waterproof zipper, which adopts an environmentally friendly water-based polyurethane waterproof membrane to be cold-bonded on the surface of the zipper.

[0006] A method for preparing an environmentally friendly water-based film waterproof zipper, the method comprising the following steps: Step (1) membrane preparation: preparing an environmentally friendly water-based polyurethane waterproof membrane; Step (2) coating: preparing environmentally friendly polyurethane glue and coating the zipper at room temperature; Step (3) cold bonding: bonding the environmentally friendly water-based polyurethane waterproof film to the zipper surface at room temperature using environmentally friendly polyurethane glue.

[0007] Preferably, the environmentally friendly water-based polyurethane waterproof membrane in step (1) is prepared from 90-110 parts by weight of polypropylene glycol, 5-10 parts by weight of polyoxypropylene glycol ether, 40-60 parts by weight of isophorone diisocyanate, 5-7 parts by weight of dimethylolbutyric acid, 3-5 parts by weight of triethylamine, 2-4 parts by weight of ethylenediamine, 1-3 parts by weight of alkyl polyglycoside, and nano 1-3 parts by weight, 0.1-0.5 parts by weight of graphene, 0.1-0.5 parts by weight of coupling agent KH-550, and 300 parts by weight of deionized water.

[0008] Preferably, under nitrogen protection, a formula amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate are reacted at 70-80° C. for 2-4 hours to obtain a prepolymer with a terminal -NCO group; a formula amount of dimethylolbutyric acid is added and the reaction is continued for 2-3 hours; the temperature is lowered to 40-50° C., a formula amount of triethylamine is added for neutralization, and the neutralized prepolymer is slowly added to 150 parts by weight of deionized water stirred at a high speed at a shear rate of 1000-5000 rpm to form an aqueous polyurethane dispersion; the aqueous polyurethane dispersion is cooled to 25° C., a formula amount of ethylenediamine is slowly added dropwise, and the reaction is carried out at 800-1000 rpm for 1-1.5 hours, 100 parts of deionized water are added, and the prepolymer is sheared at 5000-6000 rpm for 10-15 minutes; finally, the pre-dispersed - The graphene suspension is added, stirred at 1000-1500 rpm for 20-30 minutes, and then the environmentally friendly water-based polyurethane waterproof membrane is prepared by a casting method, and the curing temperature is 110-130°C.

[0009] Preferably, - The graphene suspension is prepared by the following method: 1-3 parts by weight of ethylene and 0.1-0.5 parts by weight of graphene are added to 50 parts of deionized water, and ultrasonic treatment is performed to form a uniform suspension. 1-3 parts of alkyl polysaccharide and 0.1-0.5 parts by weight of coupling agent KH-550 are added, and ultrasonic treatment is continued for 10-15 minutes to obtain -Graphene suspension.

[0010] The preferred ethylenediamine is an ethylenediamine aqueous solution with a mass concentration of 10%.

[0011] Preferably, the preparation method of the environmentally friendly polyurethane glue is as follows: under nitrogen protection, 90-110 parts by weight of polypropylene glycol, 5-10 parts by weight of polyoxypropylene glycol ether and 40-60 parts by weight of isophorone diisocyanate are reacted at 70-80° C. for 2-4 hours to obtain a prepolymer with a terminal -NCO group; 5-7 parts by weight of dimethylolbutyric acid are added and the reaction is continued for 2-3 hours; the temperature is lowered to 40-50° C., 3-5 parts by weight of triethylamine are added for neutralization, and the neutralized prepolymer is slowly added to 150 parts by weight of deionized water stirred at a high speed at a shear rate of 1000-5000. rpm to form an aqueous polyurethane dispersion; the aqueous polyurethane dispersion is cooled to 25°C, 2-4 parts by weight of ethylenediamine is slowly dripped, and the reaction is carried out at 800-1000rpm for 1-1.5 hours, 100 parts of deionized water are added, and the mixture is sheared at 5000-6000rpm for 10-15 minutes; 0.2-0.5 parts of water-soluble carbodiimide are added and stirred at 800-1000rpm for 15-20 minutes to obtain an environmentally friendly polyurethane glue.

[0012] Preferably, the thickness of the environmentally friendly water-based polyurethane waterproof membrane in step (1) is 0.05 mm-0.1 mm.

[0013] Preferably, during coating in step (2), the coating thickness is controlled at 0.005-0.01 mm, the coating temperature is 15-30° C., the coating speed is 5-15 m / min, and the coating pressure is 0.1-0.5 MPa.

[0014] Preferably, in step (3), the bonding temperature during cold bonding is 20-35° C., the pressure is 0.3-1.0 MPa, and the speed is 10-20 m / min.

[0015] Preferably, it also includes step (4) constant temperature qualitative treatment: the cold-bonded zipper is subjected to constant temperature qualitative treatment, the temperature is controlled at 30-40° C., and the time is controlled at 5-15 minutes.

[0016] Preferably, the zipper is made of polyester, nylon or cotton.

[0017] The beneficial effects of the present invention are as follows: the present invention upgrades the raw materials to environmentally friendly water-based polyurethane materials, and changes the original hot bonding technology to cold bonding technology. Through the adjustment of raw materials and processes, the high and low temperature resistance of the present invention can reach -40-200°C, and the folding resistance, scratch resistance, wear resistance and other properties are greatly improved. The improvement of environmental protection performance can better meet export standards. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below.

[0019] Example 1

[0020] The utility model relates to an environmentally friendly water-based membrane waterproof zipper, which adopts an environmentally friendly water-based polyurethane waterproof membrane to be cold-bonded on the surface of the zipper.

[0021] A method for preparing an environmentally friendly water-based film waterproof zipper, the method comprising the following steps: Step (1) membrane preparation: preparing an environmentally friendly water-based polyurethane waterproof membrane; Step (2) coating: preparing environmentally friendly polyurethane glue and coating the zipper at room temperature; Step (3) cold bonding: bonding the environmentally friendly water-based polyurethane waterproof film to the zipper surface at room temperature using environmentally friendly polyurethane glue.

[0022] The environmentally friendly water-based polyurethane waterproof membrane in step (1) is prepared by using 90 parts by weight of polypropylene glycol, 5 parts by weight of polyoxypropylene glycol ether, 40 parts by weight of isophorone diisocyanate, 5 parts by weight of dimethylolbutyric acid, 3 parts by weight of triethylamine, 2 parts by weight of ethylenediamine, 1 part by weight of alkyl polyglycoside, and nano 1 weight part, 0.1 weight part of graphene, 0.1 weight part of coupling agent KH-550, and 300 weight parts of deionized water.

[0023] Under nitrogen protection, the formulated amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate are reacted at 70°C for 4 hours to obtain a prepolymer with a terminal -NCO group; the formulated amount of dimethylolbutyric acid is added and the reaction is continued for 2 hours; the temperature is lowered to 40°C, the formulated amount of triethylamine is added for neutralization, and the neutralized prepolymer is slowly added to 150 parts by weight of deionized water stirred at a high speed at a shear rate of 2000 rpm to form an aqueous polyurethane dispersion; the aqueous polyurethane dispersion is cooled to 25°C, the formulated amount of ethylenediamine is slowly added dropwise, the reaction is carried out at 800rpm for 1.5 hours, 100 parts of deionized water are added, and the prepolymer is sheared at 5000rpm for 10 minutes; finally, the pre-dispersed - The graphene suspension was added, stirred at 1000 rpm for 30 minutes, and then the environmentally friendly water-based polyurethane waterproof membrane was prepared by a casting method, and the curing temperature was 110°C.

[0024] in, - The graphene suspension is prepared by the following method: 1 part by weight of alkyl polysaccharide and 0.1 part by weight of graphene were added to 50 parts by weight of deionized water, and ultrasonic treatment was performed to form a uniform suspension. 1 part by weight of alkyl polysaccharide and 0.1 part by weight of coupling agent KH-550 were added, and ultrasonic treatment was continued for 10 minutes to obtain -Graphene suspension.

[0025] The ethylenediamine referred to in this embodiment is an ethylenediamine aqueous solution with a mass concentration of 10%.

[0026] In order to save costs and simplify the process, and to ensure better bonding between the glue and the waterproof film (high compatibility), the formula of the environmentally friendly polyurethane glue used in this embodiment is similar to that of the waterproof film, which uses 90 parts by weight of polypropylene glycol, 5 parts by weight of polyoxypropylene glycerol ether, 40 parts by weight of isophorone diisocyanate, 5 parts by weight of dimethylolbutyric acid, 3 parts by weight of triethylamine, 2 parts by weight of ethylenediamine, 0.2 parts of water-soluble carbodiimide, and 250 parts by weight of deionized water. The preparation method comprises the following steps: under nitrogen protection, reacting a formulated amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate, reacting at 70°C for 4 hours to obtain a prepolymer with a terminal -NCO group; adding a formulated amount of dihydroxymethylbutyric acid and continuing the reaction for 2 hours; cooling to 40°C, adding a formulated amount of triethylamine for neutralization, slowly adding the neutralized prepolymer into 150 parts by weight of deionized water stirred at a high speed, at a shear rate of 2000 rpm, to form an aqueous polyurethane dispersion; cooling the aqueous polyurethane dispersion to 25°C, slowly adding a formulated amount of ethylenediamine, reacting at 800 rpm for 1.5 hours, adding 100 parts of deionized water, and shearing at 5000 rpm for 10 minutes; adding a formulated amount of water-soluble carbodiimide 800 pm and stirring for 20 minutes to obtain an environmentally friendly polyurethane glue.

[0027] Wherein, the thickness of the environmentally friendly water-based polyurethane waterproof membrane in step (1) is 0.05 mm.

[0028] Wherein, during coating in step (2), the coating thickness is controlled at 0.005 mm, the coating temperature is 15° C., the coating speed is 5 m / min, and the coating pressure is 0.1 MPa.

[0029] In the step (3), the bonding temperature during cold bonding is 20° C., the pressure is 0.3 MPa, and the speed is 10 m / min.

[0030] The method further comprises step (4) of constant temperature qualitative treatment: subjecting the cold-bonded zipper to a constant temperature qualitative treatment, with the temperature controlled at 30° C. and the time controlled at 5 minutes.

[0031] Wherein, the zipper is made of polyester.

[0032] Example 2

[0033] The utility model relates to an environmentally friendly water-based membrane waterproof zipper, which adopts an environmentally friendly water-based polyurethane waterproof membrane to be cold-bonded on the surface of the zipper.

[0034] A method for preparing an environmentally friendly water-based film waterproof zipper, the method comprising the following steps: Step (1) membrane preparation: preparing an environmentally friendly water-based polyurethane waterproof membrane; Step (2) coating: preparing environmentally friendly polyurethane glue and coating the zipper at room temperature; Step (3) cold bonding: bonding the environmentally friendly water-based polyurethane waterproof film to the zipper surface at room temperature using environmentally friendly polyurethane glue.

[0035] The environmentally friendly water-based polyurethane waterproof membrane in step (1) is prepared by mixing 100 parts by weight of polypropylene glycol, 8 parts by weight of polyoxypropylene glycol ether, 50 parts by weight of isophorone diisocyanate, 6 parts by weight of dihydroxymethylbutyric acid, 4 parts by weight of triethylamine, 3 parts by weight of ethylenediamine, 2 parts by weight of alkyl polysaccharide, and nano- 2 parts by weight, 0.3 parts by weight of graphene, 0.3 parts by weight of coupling agent KH-550, and 300 parts by weight of deionized water.

[0036] Under nitrogen protection, the formulated amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate are reacted at 75°C for 3 hours to obtain a prepolymer with a terminal -NCO group; the formulated amount of dimethylolbutyric acid is added and the reaction is continued for 2 hours; the temperature is lowered to 45°C, the formulated amount of triethylamine is added for neutralization, and the neutralized prepolymer is slowly added to 150 parts by weight of deionized water stirred at a high speed at a shear rate of 4000 rpm to form an aqueous polyurethane dispersion; the aqueous polyurethane dispersion is cooled to 25°C, the formulated amount of ethylenediamine is slowly added dropwise, the reaction is carried out at 900 rpm for 1.2 hours, 100 parts of deionized water are added, and the mixture is sheared at 5500 rpm for 13 minutes; finally, - The graphene suspension was added, stirred at 1300 rpm for 25 minutes, and then the environmentally friendly water-based polyurethane waterproof membrane was prepared by a casting method, and the curing temperature was 120°C.

[0037] in, - The graphene suspension is prepared by the following method: 2 parts by weight of ethylene and 0.3 parts by weight of graphene were added to 50 parts of deionized water, and ultrasonic treatment was performed to form a uniform suspension. 2 parts of alkyl polysaccharide and 0.3 parts by weight of coupling agent KH-550 were added, and ultrasonic treatment was continued for 13 minutes to obtain -Graphene suspension.

[0038] The ethylenediamine referred to in this embodiment is an ethylenediamine aqueous solution with a mass concentration of 10%.

[0039] In order to save costs and simplify the process, and to ensure better bonding between the glue and the waterproof film (high compatibility), the formula of the environmentally friendly polyurethane glue used in this embodiment is similar to that of the waterproof film, and is prepared by using 100 parts by weight of polypropylene glycol, 8 parts by weight of polyoxypropylene glycerol ether, 50 parts by weight of isophorone diisocyanate, 6 parts by weight of dimethylolbutyric acid, 4 parts by weight of triethylamine, 3 parts by weight of ethylenediamine, 0.3 parts of water-soluble carbodiimide, and 250 parts by weight of deionized water. The preparation method comprises the following steps: under nitrogen protection, reacting a formulated amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate, reacting at 75°C for 3 hours to obtain a prepolymer with a terminal -NCO group; adding a formulated amount of dihydroxymethylbutyric acid, and continuing the reaction for 2 hours; cooling to 45°C, adding a formulated amount of triethylamine for neutralization, and slowly adding the neutralized prepolymer into 150 parts by weight of deionized water stirred at a high speed at a shear rate of 4000 rpm to form an aqueous polyurethane dispersion; cooling the aqueous polyurethane dispersion to 25°C, slowly dripping a formulated amount of ethylenediamine, reacting at 900 rpm for 1.2 hours, adding 100 parts of deionized water, and shearing at 5500 rpm for 13 minutes; adding 0.3 parts of water-soluble carbodiimide, and stirring at 900 rpm for 18 minutes to obtain an environmentally friendly polyurethane glue.

[0040] Wherein, the thickness of the environmentally friendly water-based polyurethane waterproof membrane in step (1) is 0.08 mm.

[0041] Wherein, during coating in step (2), the coating thickness is controlled at 0.008 mm, the coating temperature is 25° C., the coating speed is 10 m / min, and the coating pressure is 0.3 Mpa.

[0042] In the step (3), the bonding temperature during cold bonding is 30° C., the pressure is 0.8 MPa, and the speed is 15 m / min.

[0043] The method further comprises step (4) of constant temperature qualitative treatment: subjecting the cold-bonded zipper to a constant temperature qualitative treatment, wherein the temperature is controlled at 35° C. and the time is controlled at 10 minutes.

[0044] Wherein, the zipper is made of nylon.

[0045] Example 3

[0046] The utility model relates to an environmentally friendly water-based membrane waterproof zipper, which adopts an environmentally friendly water-based polyurethane waterproof membrane to be cold-bonded on the surface of the zipper.

[0047] A method for preparing an environmentally friendly water-based film waterproof zipper, the method comprising the following steps: Step (1) membrane preparation: preparing an environmentally friendly water-based polyurethane waterproof membrane; Step (2) coating: preparing environmentally friendly polyurethane glue and coating the zipper at room temperature; Step (3) cold bonding: bonding the environmentally friendly water-based polyurethane waterproof film to the zipper surface at room temperature using environmentally friendly polyurethane glue.

[0048] The environmentally friendly water-based polyurethane waterproof membrane in step (1) is prepared by using 110 parts by weight of polypropylene glycol, 10 parts by weight of polyoxypropylene glycol ether, 60 parts by weight of isophorone diisocyanate, 7 parts by weight of dimethylolbutyric acid, 5 parts by weight of triethylamine, 4 parts by weight of ethylenediamine, 3 parts by weight of alkyl polyglycoside, and nano 3 parts by weight, 0.5 parts by weight of graphene, 0.5 parts by weight of coupling agent KH-550, and 300 parts by weight of deionized water.

[0049] Under nitrogen protection, a formula amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate are reacted at 80°C for 1 hour to obtain a prepolymer with a terminal -NCO group; a formula amount of dihydroxymethylbutyric acid is added and the reaction is continued for 2 hours; the temperature is lowered to 40°C, a formula amount of triethylamine is added for neutralization, and the neutralized prepolymer is slowly added to 150 parts by weight of deionized water stirred at a high speed at a shear rate of 3000 rpm to form an aqueous polyurethane dispersion; the aqueous polyurethane dispersion is cooled to 25°C, a formula amount of ethylenediamine is slowly added dropwise, the reaction is carried out at 1000 rpm for 1 hour, 100 parts of deionized water are added, and the prepolymer is sheared at 6000 rpm for 10 minutes; finally, the pre-dispersed - The graphene suspension was added, stirred at 1500 rpm for 20 minutes, and then the environmentally friendly water-based polyurethane waterproof membrane was prepared by a casting method, and the curing temperature was 130°C.

[0050] in, - The graphene suspension is prepared by the following method: 3 parts by weight of ethylene and 0.5 parts by weight of graphene were added to 50 parts of deionized water, and ultrasonic treatment was performed to form a uniform suspension. 3 parts of alkyl polysaccharide and 0.5 parts by weight of coupling agent KH-550 were added, and ultrasonic treatment was continued for 15 minutes to obtain -Graphene suspension.

[0051] The ethylenediamine referred to in this embodiment is an ethylenediamine aqueous solution with a mass concentration of 10%.

[0052] In order to save costs and simplify the process, and to ensure better bonding between the glue and the waterproof film (high compatibility), the formula of the environmentally friendly polyurethane glue used in this embodiment is similar to that of the waterproof film, and is prepared using 110 parts by weight of polypropylene glycol, 10 parts by weight of polyoxypropylene glycerol ether, 60 parts by weight of isophorone diisocyanate, 7 parts by weight of dimethylolbutyric acid, 5 parts by weight of triethylamine, 4 parts by weight of ethylenediamine, 0.5 parts of water-soluble carbodiimide, and 250 parts by weight of ionized water.

[0053] The preparation method comprises the following steps: under nitrogen protection, reacting a formulated amount of polypropylene glycol, polyoxypropylene glycol ether and isophorone diisocyanate, reacting at 80°C for one hour to obtain a prepolymer with a terminal -NCO group; adding a formulated amount of dihydroxymethylbutyric acid and continuing the reaction for 2 hours; cooling to 40°C, adding a formulated amount of triethylamine for neutralization, slowly adding the neutralized prepolymer into 150 parts by weight of deionized water stirred at high speed at a shear rate of 3000 rpm to form an aqueous polyurethane dispersion; cooling the aqueous polyurethane dispersion to 25°C, slowly dripping a formulated amount of ethylenediamine, reacting at 1000 rpm for one hour, adding 100 parts of deionized water, and shearing at 6000 rpm for 10 minutes; adding 0.5 parts of water-soluble carbodiimide and stirring at 1000 rpm for 15 minutes to obtain an environmentally friendly polyurethane glue.

[0054] Wherein, the thickness of the environmentally friendly water-based polyurethane waterproof membrane in step (1) is 0.1 mm.

[0055] Wherein, during coating in step (2), the coating thickness is controlled at 0.01 mm, the coating temperature is 30° C., the coating speed is 15 m / min, and the coating pressure is 0.5 MPa.

[0056] In the step (3), the bonding temperature during cold bonding is 35° C., the pressure is 1.0 MPa, and the speed is 20 m / min.

[0057] The method further comprises step (4) of constant temperature qualitative treatment: subjecting the cold-bonded zipper to a constant temperature qualitative treatment, wherein the temperature is controlled at 40° C. and the time is controlled at 15 minutes.

[0058] Wherein, the zipper is made of polyester.

[0059] Comparative Example 1 The difference between this comparative example and Example 2 is that: the environmentally friendly water-based polyurethane waterproof membrane in step (1) is not added - Graphene suspension, that is, the raw materials do not use alkyl polysaccharides, nano , graphene.

[0060] Comparative Example 2 The difference between this comparative example and Example 2 is that no water-soluble carbodiimide is added to the polyurethane glue used.

[0061] The waterproof zippers of Examples 1-3 of the present invention and Comparative Examples 1-2 were installed with a uniform standard and cut into lengths of 4.1 mm in width and 1.8 mm in thickness for testing.

[0062]

[0063] The waterproof performance of the waterproof zipper is not only related to the waterproof performance of the waterproof film itself, but also to the adhesion between the waterproof film and the zipper. At this time, glue becomes the key. Not only the adhesion between the glue and the waterproof film but also the adhesion between the glue and the zipper itself should be considered. If the adhesion of any aspect is not good, the waterproof film will bubble and fall off, greatly affecting the waterproof performance. It can be seen from the above table that the environmentally friendly water-based polyurethane waterproof film described in Comparative Example 1 does not add -graphene suspension, the waterproof performance is greatly reduced. The polyurethane glue used in Comparative Example 2 does not add water-soluble carbodiimide, and cannot be further cross-linked to form a more stable structure, which easily causes the waterproof film layer to separate from the zipper, and then easily causes bubbling and cracking at high and low temperatures, resulting in ineffective waterproofing. In addition, the addition of water-soluble carbodiimide can effectively ensure the bonding effect of the cold bonding technology.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An environmentally friendly water-based film waterproof zipper, characterized in that: It uses an environmentally friendly water-based polyurethane waterproof membrane cold-bonded on the zipper surface.

2. A method for preparing an environmentally friendly water-based film waterproof zipper, characterized in that: The preparation method comprises the following steps: Step (1) membrane preparation: preparing an environmentally friendly water-based polyurethane waterproof membrane; Step (2) coating: preparing environmentally friendly polyurethane glue and coating the zipper at room temperature; Step (3) cold bonding: bonding the environmentally friendly water-based polyurethane waterproof film to the zipper surface at room temperature using environmentally friendly polyurethane glue.

3. The method for preparing an environmentally friendly water-based film waterproof zipper according to claim 1, characterized in that: The environmentally friendly water-based polyurethane waterproof membrane in step (1) is prepared by using 90-110 parts by weight of polypropylene glycol, 5-10 parts by weight of polyoxypropylene glycol ether, 40-60 parts by weight of isophorone diisocyanate, 5-7 parts by weight of dimethylolbutyric acid, 3-5 parts by weight of triethylamine, 2-4 parts by weight of ethylenediamine, 1-3 parts by weight of alkyl polyglycoside, and nano 1-3 parts by weight, 0.1-0.5 parts by weight of graphene, 0.1-0.5 parts by weight of coupling agent KH-550, and 300 parts by weight of deionized water.

4. The method for preparing an environmentally friendly water-based film waterproof zipper according to claim 1, characterized in that: The thickness of the environmentally friendly water-based polyurethane waterproof membrane in step (1) is 0.05 mm-0.1 mm.

5. The method for preparing an environmentally friendly water-based film waterproof zipper according to claim 1, characterized in that: During coating in step (2), the coating thickness is controlled at 0.005-0.01 mm, the coating temperature is 15-30° C., the coating speed is 5-15 m / min, and the coating pressure is 0.1-0.5 MPa.

6. The method for preparing an environmentally friendly water-based film waterproof zipper according to claim 1, characterized in that: In step (3), the bonding temperature during cold bonding is 20-35° C., the pressure is 0.3-1.0 MPa, and the speed is 10-20 m / min.

7. The method for preparing an environmentally friendly water-based film waterproof zipper according to claim 1, characterized in that: The method further comprises the step (4) of constant temperature qualitative treatment: the cold-bonded zipper is subjected to constant temperature qualitative treatment, the temperature is controlled at 30-40°C, and the time is controlled at 5-15 minutes.

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