CN115093599B - Preparation method of light foaming slippers - Google Patents
Preparation method of light foaming slippers Download PDFInfo
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- CN115093599B CN115093599B CN202210793265.6A CN202210793265A CN115093599B CN 115093599 B CN115093599 B CN 115093599B CN 202210793265 A CN202210793265 A CN 202210793265A CN 115093599 B CN115093599 B CN 115093599B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/06—Devices for gluing soles on shoe bottoms
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- C08J9/0023—Use of organic additives containing oxygen
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
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- C08K2201/011—Nanostructured additives
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Abstract
The invention discloses a preparation method of light foaming slippers, which belongs to the technical field of shoemaking, EVA resin, zinc oxide, stearic acid, talcum powder, modifier and foaming agent are kneaded, granulated and foamed to obtain shoe bodies and insoles; stirring and mixing polyether polyol, full cellulose fiber, a wetting agent, diphenylmethane diisocyanate, a foaming agent, a crosslinking agent and a catalyst, and injecting, foaming and molding to obtain a supporting layer; bonding the shoe body, the supporting layer and the insole by using an adhesive, and pressing to prepare the lightweight foaming slipper; the shoe body and the insole part are relatively soft in texture and comfortable to wear; the supporting layer is light in texture, so that the weight of the slippers is reduced; the adhesive has certain elasticity after being cured, and has good adaptability with slipper materials; the full cellulose fiber has higher strength, is favorable for increasing the compression strength of the supporting layer, provides better support for the foot, and simultaneously reduces the possibility of tearing the supporting layer, thereby being favorable for prolonging the service life of the slippers.
Description
Technical Field
The invention belongs to the technical field of shoemaking, and particularly relates to a preparation method of a lightweight foaming slipper.
Background
The slippers are necessary shoes for consumers in summer, and the foaming slippers are lighter than the conventional PVC slippers and are more and more choices for consumers. The common foaming processes for shoemaking are three, wherein the first is that a flat plate is foamed greatly, the plate is firstly made and then is formed through blanking, edging and other steps, the cost of machine equipment is relatively low, and a small-sized engineering can adopt the mode; the second is mould pressing foaming, namely putting the material particles into a mould for foaming and forming after weighing, but the production efficiency is low, and the amount of leftover materials is large; the third is injection cross-linking foaming, which is the main stream technology at present, the process is that the raw materials, auxiliary agents and the like are extruded and granulated after being kneaded at high speed, then injection molding is carried out, and the mold is only half of the size of the finished product, thus the production efficiency is high, no leftover materials are basically produced, and the manufacturing cost can be greatly reduced.
Common foaming slippers are prepared by adopting an EVA (ethylene vinyl acetate copolymer) and other materials through an integral foaming molding mode, but the foaming hardness of the foaming slippers is not well controlled, the hard shoes are uncomfortable to wear, the feet are reduced to support when the hard shoes are too soft, and flat feet are easily caused when the hard shoes are worn for a long time; the slippers manufactured by adopting the composite manufacturing mode can have better wearing experience, but the slippers can be repeatedly bent in the wearing process, and how to bond different shoe materials firmly is a main difficulty in prolonging the service life of the slippers. Therefore, a method for preparing the lightweight foaming slipper is needed.
Disclosure of Invention
The invention aims to provide a preparation method of a light foaming slipper, which aims to solve the problems in the background technology.
The aim of the invention can be achieved by the following technical scheme:
the light foaming slipper comprises a slipper body, an insole and a supporting layer, wherein the slipper body comprises a sole and a vamp which are integrally formed, the sole is provided with a mounting groove, and the supporting layer is arranged in the mounting groove.
A preparation method of a light foaming slipper comprises the following steps:
step one: adding EVA resin, zinc oxide, stearic acid, talcum powder, a modifier and a foaming agent into an internal mixer for kneading, extruding and granulating by using a double-screw extruder to obtain modified EVA particles, injecting the modified EVA particles into corresponding moulds by using an injection molding machine for cross-linking foaming molding, standing for 3-6h at 40 ℃, and demoulding to obtain shoe bodies and insoles;
step two: adding polyether polyol into a flask, adding all cellulose fibers and a wetting agent, stirring for 15-20 mm under the condition of 500-800r/min, adding diphenylmethane diisocyanate, a foaming agent, a crosslinking agent and a catalyst, continuously stirring for 10-15min, injecting into a mold by using an injection molding machine, crosslinking, foaming and molding, standing for 24-48h at 60 ℃, and demolding to obtain a support layer;
step three: coating a layer of adhesive with the thickness of 0.3-0.8mm on the bottom of the mounting groove of the shoe body, then placing the corresponding outline of the supporting layer into the mounting groove, coating a layer of adhesive with the thickness of 0.3-0.8mm on the surface of the supporting layer, which is not contacted with the mounting groove, placing the corresponding outline of the insole into the mounting groove to be bonded with the supporting layer, and pressing for 15-30min by using a pressing machine to prepare the lightweight foaming slipper.
Further, in the first step, the dosage ratio of EVA resin, zinc oxide, stearic acid, talcum powder, modifier and foaming agent is 20g:1g:0.2g:18g:16g:3.1g.
Further, the dosage ratio of polyether polyol, holocellulose fiber, wetting agent, diphenylmethane diisocyanate, foaming agent, crosslinking agent and catalyst in the second step is 40g:8g:3g:40g:1.2g:0.1-0.3g:0.6g.
Further, the preparation method of the adhesive comprises the following steps: adding EVA emulsion, aqueous polyurethane emulsion, propylene glycol and distilled water into a flask, stirring for 15-20min under the condition of 1000r/min, then adding a wetting agent, a defoaming agent and nano silicon dioxide, and continuously stirring for 20-30min to obtain the adhesive.
Further, the dosage ratio of the EVA emulsion, the aqueous polyurethane emulsion, the propylene glycol, the distilled water, the wetting agent, the defoamer and the nano silicon dioxide is 60-62g:80-82g:10-13g:35-45g:0.2-0.4g:0.2-0.3g:5-7g.
Further, the modifier is ethylene propylene diene monomer.
Further, the foaming agent is azodicarbonamide.
Further, the crosslinking agent is triethanolamine.
Further, the catalyst is dibutyl tin dilaurate.
Further, the polyether polyol used in the second step has a viscosity of 5500.+ -.500 mPa.s.
Further, the EVA emulsion is purchased from Guangzhou, china, inc., and the model is DA-102;
further, polyurethane emulsion was purchased from Anhui An Dahua Tai New Material Co., ltd, model AH-1618.
Further, the wetting agent was a hydroxy-terminated polydimethylsiloxane commercially available from Anhui Ai Yaoda silicone oil Inc.
Further, the defoamer is an organosilicon defoamer purchased from Shandong energy-accumulating chemical Co.
Further, the preparation method of the holocellulose fiber comprises the following steps: adding bamboo powder and acetone into a flask, extracting for 3-4h under the condition of water bath at 60 ℃, removing lipid, pectin and other substances in the bamboo powder, bleaching the extracted bamboo powder with sodium hypochlorite solution with mass fraction of 1% for 5-6 times under the condition of 75 ℃, and dripping proper amount of acetic acid in the bleaching process to adjust the pH value to 4-5; filtering, namely washing filter residues after filtering by distilled water until the last washing liquid is neutral to obtain cellulose fibers; soaking cellulose fiber in 8% sodium hydroxide solution at 25-30deg.C for 8-10 hr, heating to 90deg.C, soaking for 2-3 hr, vacuum filtering, washing the residue with distilled water until the final washing solution is neutral, and removing heteropolysaccharide coexisting with cellulose fiber to obtain holocellulose fiber.
Further, bamboo powder was purchased from polysilicone mining limited of Shanghai county.
The invention has the beneficial effects that:
the light slippers prepared by the invention comprise shoe bodies, insoles and supporting layers, wherein the shoe bodies and the insoles are formed by EVA foaming through raw material selection and proportion, the texture is relatively soft, the instep parts can not feel foot wear, and the slippers are comfortable to wear; the supporting layer is formed by polyurethane foaming, and the apparent density is 55.3+/-1.5 kg/m 3 The slipper is lighter in texture, is beneficial to further lightening the weight of the slipper, and is lighter to wear; the slippers adopt self-matched adhesive in the preparation process, and the adhesive is water-based adhesive, so that the slippers are more environment-friendly; the glue contains EThe VA emulsion and the aqueous polyurethane emulsion are proportioned, the VA emulsion and the aqueous polyurethane emulsion are similar to slipper materials, have certain elasticity after solidification, have good adaptability with slipper materials, and are added with nano silicon dioxide, so that the flowability of an adhesive is moderate, the adhesive is convenient to uniformly coat, the slipper is firmly bonded through cohesive force generated by the adhesive, and the bonding effect is better; the support layer formed by foaming polyurethane contains all-cellulose fibers, which is beneficial to increasing the compression strength of the support layer, providing better support for feet and preventing flat feet from being generated, and the all-cellulose fibers have higher strength, so that the possibility that the support layer with smaller apparent density is torn after the slippers are bent for a long time is reduced, and the service life of the slippers is prolonged.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of a cross-section of a lightweight foam slipper of the present invention;
figure 2 is a schematic view of the structure of the mounting slot portion of the lightweight slipper of the invention.
In the figure: 1. a sole; 11. a mounting groove; 2. a support layer; 3. an insole; 4. an upper.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the lightweight foaming slipper comprises a soft slipper body, an insole 3 and a hard supporting layer 2, wherein the slipper body comprises a sole 1 and a vamp 4 which are integrally formed, a mounting groove 11 is formed in a part of the sole 1, the supporting layer 2 is arranged in the mounting groove 11, and the attached slipper materials are bonded through an adhesive.
Example 1
The preparation method of the lightweight foam shoes comprises the following steps:
a preparation method of a light foaming slipper comprises the following steps:
step one: adding 200g of EVA resin, 10g of zinc oxide, 2g of stearic acid, 180g of talcum powder, 160g of ethylene propylene diene monomer and 31g of azodicarbonamide into an internal mixer, kneading, extruding and granulating by a double-screw extruder to obtain modified EVA particles, injecting the modified EVA particles into a corresponding mould by an injection molding machine, crosslinking, foaming and molding, standing for 3h at 40 ℃, and demolding to obtain the shoe body and the insole 3.
Step two: adding bamboo powder and acetone into a flask, extracting for 3 hours under the condition of water bath at 60 ℃, removing substances such as lipid and pectin in the bamboo powder, bleaching the extracted bamboo powder for 5 times by using sodium hypochlorite solution with the mass fraction of 1% under the condition of 75 ℃, and dripping proper amount of acetic acid in the bleaching process to adjust the pH value to 4; filtering, namely washing filter residues after filtering by distilled water until the last washing liquid is neutral to obtain cellulose fibers; soaking cellulose fibers in a sodium hydroxide solution with the mass fraction of 8% for 8 hours at 25 ℃, then heating to 90 ℃ for soaking for 2 hours, carrying out suction filtration, washing filter residues with distilled water until the last washing liquid is neutral, and removing heteropolysaccharide coexisting with the cellulose fibers to obtain the holocellulose fibers.
Step three: 80g of polyether polyol is added into a flask, 16g of holocellulose fiber and 6g of hydroxyl-terminated polydimethylsiloxane are added, stirring is carried out for 15 mm at 500r/min, then 80g of diphenylmethane diisocyanate, 2.4g of azodicarbonamide, 0.2g of triethanolamine and 1.2g of dibutyltin dilaurate are added, stirring is continued for 10min, then injection molding machine is utilized for injection into a mold for crosslinking foaming molding, standing is carried out for 24h at 60 ℃, and demolding is carried out, thus obtaining the supporting layer 2.
Step four: 60g of EVA emulsion, 80g of aqueous polyurethane emulsion, 10g of propylene glycol and 35g of distilled water are added into a flask, stirred for 15min under the condition of 1000r/min, then 0.2g of hydroxyl end-capped polydimethylsiloxane, 0.2g of organosilicon defoamer and 5g of nano silicon dioxide are added, and stirring is continued for 20min, so that the adhesive is obtained.
Step five: coating a layer of adhesive with the thickness of 0.3mm on the bottom of the mounting groove 11 of the shoe body, putting the corresponding outline of the supporting layer 2 into the mounting groove 11, coating a layer of adhesive with the thickness of 0.3mm on one surface of the supporting layer 2 which is not contacted with the mounting groove 11 after lamination, putting the corresponding outline of the insole 3 into the mounting groove 11 to be laminated with the supporting layer 2, and laminating for 15 minutes by a laminating machine to prepare the lightweight foaming slipper.
Example 2
The preparation method of the lightweight foam shoes comprises the following steps:
a preparation method of a light foaming slipper comprises the following steps:
step one: adding 200g of EVA resin, 10g of zinc oxide, 2g of stearic acid, 180g of talcum powder, 160g of ethylene propylene diene monomer and 31g of azodicarbonamide into an internal mixer, kneading, extruding and granulating by a double-screw extruder to obtain modified EVA particles, injecting the modified EVA particles into a corresponding mould by an injection molding machine, crosslinking, foaming and molding, standing for 5h at 40 ℃, and demolding to obtain the shoe body and the insole 3.
Step two: adding bamboo powder and acetone into a flask, extracting for 3.5h under the condition of water bath at 60 ℃, removing substances such as lipid and pectin in the bamboo powder, bleaching the extracted bamboo powder for 5 times with sodium hypochlorite solution with the mass fraction of 1% under the condition of 75 ℃, and dripping a proper amount of acetic acid in the bleaching process to adjust the pH value to 4.5; filtering, namely washing filter residues after filtering by distilled water until the last washing liquid is neutral to obtain cellulose fibers; soaking cellulose fibers in a sodium hydroxide solution with the mass fraction of 8% for 9 hours at the temperature of 28 ℃, then heating to 90 ℃ for soaking for 2.5 hours, carrying out suction filtration, washing filter residues with distilled water until the last washing liquid is neutral, and removing heteropolysaccharide coexisting with the cellulose fibers to obtain the holocellulose fibers.
Step three: 80g of polyether polyol is added into a flask, 16g of holocellulose fiber and 6g of hydroxyl-terminated polydimethylsiloxane are added, stirring is carried out for 18 mm at 600r/min, then 80g of diphenylmethane diisocyanate, 2.4g of azodicarbonamide, 0.4g of triethanolamine and 1.2g of dibutyltin dilaurate are added, stirring is continued for 12min, then injection molding machine is utilized for injection into a mold for crosslinking foaming molding, standing is carried out for 36h at 60 ℃, and demolding is carried out, thus obtaining the supporting layer 2.
Step four: 61g of EVA emulsion, 81g of aqueous polyurethane emulsion, 12g of propylene glycol and 40g of distilled water are added into a flask, stirred for 18min under the condition of 1000r/min, then 0.3g of hydroxyl end-capped polydimethylsiloxane, 0.25g of organosilicon defoamer and 6g of nano silicon dioxide are added, and stirring is continued for 25min, so that the adhesive is obtained.
Step five: coating a layer of adhesive with the thickness of 0.5mm on the bottom of the mounting groove 11 of the shoe body, putting the corresponding outline of the supporting layer 2 into the mounting groove 11, coating a layer of adhesive with the thickness of 0.5mm on one surface of the supporting layer 2 which is not contacted with the mounting groove 11 after lamination, putting the corresponding outline of the insole 3 into the mounting groove 11 to be laminated with the supporting layer 2, and laminating for 20 minutes by a laminating machine to prepare the lightweight foaming slipper.
Example 3
The preparation method of the lightweight foam shoes comprises the following steps:
a preparation method of a light foaming slipper comprises the following steps:
step one: adding 200g of EVA resin, 10g of zinc oxide, 2g of stearic acid, 180g of talcum powder, 160g of ethylene propylene diene monomer and 31g of azodicarbonamide into an internal mixer, kneading, extruding and granulating by a double-screw extruder to obtain modified EVA particles, injecting the modified EVA particles into a corresponding mould by an injection molding machine, crosslinking, foaming and molding, standing for 6h at 40 ℃, and demolding to obtain the shoe body and the insole 3.
Step two: adding bamboo powder and acetone into a flask, extracting for 4 hours under the condition of water bath at 60 ℃, removing substances such as lipid and pectin in the bamboo powder, bleaching the extracted bamboo powder for 6 times by using sodium hypochlorite solution with the mass fraction of 1% under the condition of 75 ℃, and dripping proper amount of acetic acid in the bleaching process to adjust the pH value to 5; filtering, namely washing filter residues after filtering by distilled water until the last washing liquid is neutral to obtain cellulose fibers; soaking cellulose fibers in a sodium hydroxide solution with the mass fraction of 8% for 10 hours at the temperature of 30 ℃, then heating to 90 ℃ for soaking for 3 hours, carrying out suction filtration, washing filter residues with distilled water until the last washing liquid is neutral, and removing heteropolysaccharide coexisting with the cellulose fibers to obtain the holocellulose fibers.
Step three: 80g of polyether polyol is added into a flask, 16g of holocellulose fiber and 6g of hydroxyl-terminated polydimethylsiloxane are added, stirring is carried out for 20 mm at 800r/min, then 80g of diphenylmethane diisocyanate, 2.4g of azodicarbonamide, 0.6g of triethanolamine and 1.2g of dibutyltin dilaurate are added, stirring is continued for 15min, then injection molding machine is utilized for injection into a mold for crosslinking foaming molding, standing is carried out for 48h at 60 ℃, and demolding is carried out, thus obtaining the supporting layer 2.
Step four: 62g of EVA emulsion, 82g of aqueous polyurethane emulsion, 13g of propylene glycol and 45g of distilled water are added into a flask, stirred for 20min under the condition of 1000r/min, then 0.4g of hydroxyl end-capped polydimethylsiloxane, 0.3g of organosilicon defoamer and 7g of nano silicon dioxide are added, and stirring is continued for 30min, so that the adhesive is obtained.
Step five: coating a layer of adhesive with the thickness of 0.8mm on the bottom of the mounting groove 11 of the shoe body, putting the corresponding outline of the supporting layer 2 into the mounting groove 11, coating a layer of adhesive with the thickness of 0.8mm on one surface of the supporting layer 2 which is not contacted with the mounting groove 11 after lamination, putting the corresponding outline of the insole 3 into the mounting groove 11 to be laminated with the supporting layer 2, and laminating for 30 minutes by a laminating machine to prepare the lightweight foaming slipper.
The polyether polyol used in example 1-example 3 had a viscosity of 5500.+ -.500 mPas; the apparent density of the prepared support layer 2 is 55.3+ -1.5 kg/m 3 The method comprises the steps of carrying out a first treatment on the surface of the The EVA emulsion as an adhesive raw material is purchased from Guangzhou Kogyo Chemie Co., ltd, and the model is DA-102; polyurethane emulsion is purchased from Anhui An Dahua Taai New Material Co., ltd, and the model is AH-1618; hydroxy-terminated polydimethylsiloxane was purchased from Anhui Ai Yaoda silicone oil Co., ltd; the silicone defoamer was purchased from Shandong energy-accumulating chemical Co., ltd; bamboo powder was purchased from polysilicone mining limited in Shanghai county.
Comparative example 1: on the basis of the embodiment 3, no full cellulose fiber is added in the preparation of the supporting layer 2, and the rest steps are unchanged to prepare the slippers.
Comparative example 2: based on example 3, the slipper was prepared by replacing the adhesive used to bond the slipper with PU shoe-repairing adhesive purchased from the company limited by the power group, and the rest steps were unchanged.
Performing performance tests on the embodiment 1-embodiment 3, the comparative example 1 and the comparative example 2, bending different slippers with an outsole bending tester for 1000 times according to a bending angle of 90 degrees, setting the bending speed to be 80 times/min, and recording test conditions; according to the raw material ratios of the slipper supporting layer 2 prepared in example 1-example 3, comparative example 1 and comparative example 2, foaming and cutting into pieces the specification is 3×3×3 (unit: cm) and having the same apparent density, the compressive strength and compressive modulus of the different samples were measured with a hydraulic universal mechanical tester at a speed of 2.5mm/min, and the results are shown in table 1 ("/" indicates not measured):
TABLE 1
| Project | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Slipper condition after bending test | Slight crease | Slight crease | Slight crease | Severe glue spreading | Light micro-opening glue |
| Compressive Strength (kPa) | 468.3 | 468.5 | 468.6 | 381.7 | / |
| Compression modulus (kPa) | 2313.4 | 2313.7 | 2314.0 | 1795 | / |
The slippers in comparative example 1 were severely glued, mainly the surface of the supporting layer 2 was torn. As can be seen from Table 1, the slippers prepared in examples 1-3 still have no adhesive after 1000 times of bending, and the compression strength of the shoe material of the supporting layer 2 is higher.
It should be noted that in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The preparation method of the light foaming slipper is characterized by comprising the following steps:
step one: kneading EVA resin, zinc oxide, stearic acid, talcum powder, a modifier and a foaming agent, granulating to obtain modified EVA particles, injecting the modified EVA particles into corresponding moulds, crosslinking, foaming and forming, standing for 3-6h at 40 ℃, and demoulding to obtain shoe bodies and insoles (3);
step two: adding polyether polyol into a flask, then adding all cellulose fibers and a wetting agent, stirring for 15-20 mm, then adding diphenylmethane diisocyanate, a foaming agent, a crosslinking agent and a catalyst, continuously stirring for 10-15min, then injecting into a mold for crosslinking foaming molding, standing for 24-48h at 60 ℃, and demolding to obtain a support layer (2);
step three: coating a layer of adhesive with the thickness of 0.3-0.8mm on the bottom of a mounting groove (11) of the shoe body, then placing the corresponding outline of a supporting layer (2) into the mounting groove (11), coating a layer of adhesive with the thickness of 0.3-0.8mm on one surface of the supporting layer (2) which is not contacted with the mounting groove (11) after lamination, placing the corresponding outline of an insole (3) into the mounting groove (11) to be laminated with the supporting layer (2), and laminating for 15-30min by a laminating machine to prepare the lightweight foaming slippers;
the preparation method of the adhesive comprises the following steps: adding EVA emulsion, aqueous polyurethane emulsion, propylene glycol and distilled water into a flask, stirring for 15-20min under the condition of 1000r/min, then adding a wetting agent, a defoaming agent and nano silicon dioxide, and continuously stirring for 20-30min to obtain an adhesive;
the preparation method of the holocellulose fiber comprises the following steps: adding bamboo powder and acetone into a flask, extracting for 3-4h under the condition of water bath at 60 ℃, bleaching the extracted bamboo powder with sodium hypochlorite solution for 5-6 times under the condition of 75 ℃, and dripping proper amount of acetic acid in the bleaching process to adjust the pH value to 4-5; filtering, namely washing filter residues after filtering by distilled water until the last washing liquid is neutral to obtain cellulose fibers; soaking cellulose fiber in sodium hydroxide solution at 25-30deg.C for 8-10 hr, heating to 90deg.C, soaking for 2-3 hr, vacuum filtering, washing the residue with distilled water until the final washing solution is neutral, and obtaining full cellulose fiber.
2. The method for preparing the lightweight foaming slipper according to claim 1, wherein in the first step, the dosage ratio of the EVA resin, the zinc oxide, the stearic acid, the talcum powder, the modifier and the foaming agent is 20g:1g:0.2g:18g:16g:3.1g.
3. The method for preparing the lightweight foaming slipper according to claim 1, wherein the dosage ratio of polyether polyol, holocellulose fiber, wetting agent, diphenylmethane diisocyanate, foaming agent, crosslinking agent and catalyst in the second step is 40g:8g:3g:40g:1.2g:0.1-0.3g:0.6g.
4. A method for preparing a lightweight foam slipper as claimed in claim 3, wherein the viscosity of the polyether polyol is 5500±500 mPa-s.
5. The method for preparing the lightweight foaming slipper according to claim 1, wherein the dosage ratio of the EVA emulsion, the aqueous polyurethane emulsion, the propylene glycol, the distilled water, the wetting agent, the defoamer and the nano silicon dioxide is 60-62g:80-82g:10-13g:35-45g:0.2-0.4g:0.2-0.3g:5-7g.
6. The method for producing lightweight foam slippers according to claim 1, wherein the modifier is ethylene propylene diene monomer rubber.
7. The method for producing lightweight foaming slippers according to claim 1, wherein the foaming agent is azodicarbonamide.
8. The method for preparing the lightweight foam slippers according to claim 1, wherein the catalyst is dibutyl tin dilaurate.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842528A (en) * | 2007-08-31 | 2010-09-22 | 可乐丽可乐富丽世股份有限公司 | Base material for cushioning and use thereof |
| CN106263271A (en) * | 2016-08-31 | 2017-01-04 | 中国皮革和制鞋工业研究院 | Shoe pad and preparation method thereof and the footwear comprising this shoe pad |
| CN108638415A (en) * | 2018-04-28 | 2018-10-12 | 浙江隆源高分子科技有限公司 | A kind of EVA foaming three colors, three hardness footwear material production technology |
| CN108741409A (en) * | 2018-05-03 | 2018-11-06 | 东莞市顺风运动器材有限公司 | A kind of health monitoring insole |
| CN111109763A (en) * | 2020-01-15 | 2020-05-08 | 李宁（中国）体育用品有限公司 | Shoe-pad |
| CN113733703A (en) * | 2021-09-27 | 2021-12-03 | 福建鸿星尔克体育用品有限公司 | High-resilience ultra-light insole and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190216173A1 (en) * | 2018-01-15 | 2019-07-18 | I-Hui Chao | Adherable Footwear Cushion |
-
2022
- 2022-07-05 CN CN202210793265.6A patent/CN115093599B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101842528A (en) * | 2007-08-31 | 2010-09-22 | 可乐丽可乐富丽世股份有限公司 | Base material for cushioning and use thereof |
| CN106263271A (en) * | 2016-08-31 | 2017-01-04 | 中国皮革和制鞋工业研究院 | Shoe pad and preparation method thereof and the footwear comprising this shoe pad |
| CN108638415A (en) * | 2018-04-28 | 2018-10-12 | 浙江隆源高分子科技有限公司 | A kind of EVA foaming three colors, three hardness footwear material production technology |
| CN108741409A (en) * | 2018-05-03 | 2018-11-06 | 东莞市顺风运动器材有限公司 | A kind of health monitoring insole |
| CN111109763A (en) * | 2020-01-15 | 2020-05-08 | 李宁（中国）体育用品有限公司 | Shoe-pad |
| CN113733703A (en) * | 2021-09-27 | 2021-12-03 | 福建鸿星尔克体育用品有限公司 | High-resilience ultra-light insole and preparation method thereof |
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