CN113831721A - Injection-molded sole material for PU leather shoe surface free of glue brushing adhesion - Google Patents
Injection-molded sole material for PU leather shoe surface free of glue brushing adhesion Download PDFInfo
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- CN113831721A CN113831721A CN202110948948.XA CN202110948948A CN113831721A CN 113831721 A CN113831721 A CN 113831721A CN 202110948948 A CN202110948948 A CN 202110948948A CN 113831721 A CN113831721 A CN 113831721A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
Abstract
The invention relates to the technical field of injection shoes, in particular to an injection shoe sole material for PU leather shoe sole glue-free adhesion, which comprises the following steps of sequentially weighing 100 parts by weight of a mixed rubber material, 30-40 parts by weight of a plasticizer, 10-20 parts by weight of a compatilizer, 1-3 parts by weight of an antioxidant, 1-3 parts by weight of an ultraviolet absorbent, 1-3 parts by weight of stearic acid and 5-15 parts by weight of calcium carbonate, wherein the plasticizer comprises naphthenic oil, 60-80 parts by weight of TPU in the mixed rubber material, 20-40 parts by weight of SBS in the mixed rubber material, and at least one of thermoplastic styrene butadiene rubber SBS3411, SBS1301, SBS3546 and SBS1401, wherein the weighed raw materials are fully mixed by a stirrer, and are extruded and granulated by a double-screw extruder under the conditions of the temperature of 150-180 ℃ and the screw rotation speed of 200-250 r/min to obtain the injection shoe sole material for the PU leather shoe sole glue-free adhesion. The injection molding sole material disclosed by the invention has excellent peel strength and good mechanical properties with a PU leather shoe surface under the condition of no glue brushing.
Description
Technical Field
The invention relates to the technical field of injection-molded shoes, in particular to an injection-molded sole material for PU leather shoe upper surface gluing-free adhesion.
Background
The injection molding shoe molding is that rubber materials are directly injected into a mold cavity formed by a mold touching the bottom through an injection machine and a shoe tree sleeved with a vamp, and mutual adhesion or mutual permeation embedding of the bottom materials and the vamp is utilized to combine the vamp and the sole. With the development of shoe making industry, PU leather is more and more widely applied to shoe products as vamp fabrics, and because a layer of polyurethane material with strong polarity is adhered to the surface of the PU leather and the surface is smooth, the PU leather can not form effective adhesion with the traditional nonpolar (or weak polarity) TPR (thermal plastic rubber) backing material.
The TPU is used as a material with a chemical structure close to that of PU and has a good bonding effect with PU leather, the market price of the TPU is obviously higher than that of a TPR material, the TPU is used as an injection molding base material only, the product cost can be obviously improved, and the existing disc injection molding machine is not suitable for production of the pure TPU base material, so that the existing disc injection machine needs to be modified and upgraded to increase the production cost, and the hardness of the pure TPU product is not easy to adjust, so that the wearing comfort of shoes is influenced.
The design of the formula of the bottom material has a close relation to the production cost and the sustainable development of the injection-molded shoes, wherein the performance of the bottom material not only influences the wearing comfort of the injection-molded shoes, but also has stronger selectivity to the vamp material, along with the development of the shoe manufacturing process of the injection-molded shoes and the improvement of the requirement of people on the comfort of the shoes, the formula of the injection-molded bottom material needs to make a lot of improvements aiming at the actual requirements, and therefore the injection-molded bottom material for the PU leather vamp glue-brushing-free adhesion is urgently needed to solve the problems.
Disclosure of Invention
The invention aims to provide an injection molding sole material for PU leather vamp glue-brushing-free adhesion, and aims to solve the problems of high production cost and low production efficiency caused by poor adhesion strength between the traditional injection molding sole material and PU leather in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bottom material of moulding plastics that is used for PU leather vamp to exempt from to brush gluey bonding, bottom material of moulding plastics includes the raw materials of following parts by weight: 100 parts of mixed rubber material, 30-40 parts of plasticizer, 10-20 parts of compatilizer, 1-3 parts of antioxidant, 1-3 parts of ultraviolet absorber, 1-3 parts of stearic acid and 5-15 parts of calcium carbonate, wherein the plasticizer comprises naphthenic oil.
Preferably, 60-80 parts of TPU in the mixed rubber material, and 20-40 parts of SBS in the mixed rubber material.
Preferably, the SBS is at least one of thermoplastic styrene-butadiene rubber SBS3411, thermoplastic styrene-butadiene rubber SBS1301, thermoplastic styrene-butadiene rubber SBS3546, and thermoplastic styrene-butadiene rubber SBS 1401.
Preferably, the TPU is at least one of thermoplastic polyurethane elastomer rubber UT7-70AU, thermoplastic polyurethane elastomer rubber UT6-85AU, thermoplastic polyurethane elastomer rubber 3685AU and thermoplastic polyurethane elastomer rubber 3690 AU.
Preferably, the compatibilizer is at least one of maleic anhydride grafted SBS, maleic anhydride grafted POE and maleic anhydride grafted EPDM.
The method comprises the following steps:
(1) mixing the used materials: adding the mixed rubber material into a stirring tank, regulating the rotation speed to 30-50 r/min, stirring at 40-50 ℃ for 1-2 min, adding the plasticizer, continuously stirring for 8-10 min, adding the rest raw materials into the stirring tank, stirring for 30min, opening a discharge door, discharging, cooling and bagging;
(2) and (3) extruding and granulating: and (3) regulating the rotating speed of the double-screw extruder to 200-250 r/min, regulating the temperature to 150-180 ℃, cutting and granulating by adopting low-temperature water, drying by spin-drying, drying for 4 hours at the temperature of 110 ℃, cooling and bagging.
Compared with the prior art, the invention has the beneficial effects that:
the injection-molded shoe sole material for the glue brushing-free adhesion of the PU leather shoe upper surface is provided with mixed glue stock, a plasticizer, a compatilizer, an antioxidant, an ultraviolet absorbent, stearic acid and calcium carbonate, the injection-molded sole material obtained by mixing and stirring the mixed sizing material, the plasticizer, the compatilizer, the antioxidant, the ultraviolet absorbent, the stearic acid and the calcium carbonate according to the proportion adopts a unique matching system, a capacity-increasing system and a plasticizing system, can realize good adhesion between the injection-molded sole material and the vamp made of the PU leather material without brushing glue, the hardness of the bottom material can be regulated and controlled in a larger range, the transformation and the upgrade of the existing processing equipment are avoided, the bottom material can be repeatedly utilized for many times, the resources are saved, the production efficiency and the yield are improved, the production cost is reduced, the stability of the product quality is improved, and the problems of high production cost and low production efficiency caused by poor bonding strength between the traditional injection molding sole material and PU leather are solved;
drawings
FIG. 1 is a schematic flow chart of the method of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of the present invention: the injection molding sole material comprises the following raw materials in parts by weight: the rubber composition comprises 100 parts of a mixed rubber material, 30-40 parts of a plasticizer, 10-20 parts of a compatilizer, 1-3 parts of an antioxidant, 1-3 parts of an ultraviolet absorber, 1-3 parts of stearic acid and 5-15 parts of calcium carbonate, wherein the plasticizer comprises naphthenic oil, the naphthenic oil belongs to operation oil (processing oil and filling oil) and the like, and the naphthenic oil is petroleum fraction taking naphthenic hydrocarbon as a main component and is used as the plasticizer and the filling operation oil of rubber, so that the plasticity and the elasticity of the rubber can be improved.
60-80 parts of TPU and 20-40 parts of SBS in the mixed rubber material.
The SBS is at least one of thermoplastic styrene-butadiene rubber SBS3411, thermoplastic styrene-butadiene rubber SBS1301, thermoplastic styrene-butadiene rubber SBS3546 and thermoplastic styrene-butadiene rubber SBS1401, and the SBS thermoplastic styrene-butadiene rubber is styrene-butadiene-styrene triblock copolymer and is called thermoplastic styrene-butadiene block copolymer or thermoplastic styrene-butadiene rubber, which is called SBS for short.
The TPU is at least one of thermoplastic polyurethane elastomer rubber UT7-70AU, thermoplastic polyurethane elastomer rubber UT6-85AU, thermoplastic polyurethane elastomer rubber 3685AU and thermoplastic polyurethane elastomer rubber 3690AU, the thermoplastic polyurethane elastomer is also called thermoplastic polyurethane rubber, TPU for short, and is An (AB) n-type block linear polymer, A is polyester or polyether with high molecular weight (1000-6000), B is diol containing 2-12 straight chain carbon atoms, the chemical structure between AB chain segments is diisocyanate, the thermoplastic polyurethane rubber is crosslinked by intermolecular hydrogen bonds or slightly crosslinked between macromolecular chains, the two crosslinked structures have reversibility along with the rise or the fall of temperature, the intermolecular force is weakened in a molten state or a solution state, and strong intermolecular force is connected together after cooling or solvent volatilization to recover the performance of the original solid, the polyurethane thermoplastic elastomer has the outstanding characteristics of excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance and good oil resistance, chemical resistance and environmental resistance, and the wear resistance, elasticity, environmental resistance and other properties of the injection molding sole material can be obviously improved by adding the TPU thermoplastic polyurethane elastomer rubber.
The compatilizer is at least one of maleic anhydride grafted SBS, maleic anhydride grafted POE and maleic anhydride grafted EPDM, and maleic anhydride is selected as a monomer and can be grafted with other materials at a proper temperature.
The method comprises the following steps:
(1) mixing the used materials: adding the mixed rubber material into a stirring tank, regulating the rotation speed to 30-50 r/min, stirring at 40-50 ℃ for 1-2 min, adding the plasticizer, continuously stirring for 8-10 min, adding the rest raw materials into the stirring tank, stirring for 30min, opening a discharge door, discharging, cooling and bagging;
(2) and (3) extruding and granulating: and (3) regulating the rotating speed of the double-screw extruder to 200-250 r/min, regulating the temperature to 150-180 ℃, cutting and granulating by adopting low-temperature water, drying by spin-drying, drying for 4 hours at the temperature of 110 ℃, cooling and bagging.
The working principle is as follows: weighing 60 parts of TPU, 140140 parts of SBS, 15 parts of compatilizer EPDM grafted maleic anhydride, 30 parts of naphthenic oil, 10103 parts of antioxidant, 3 parts of ultraviolet absorbent benzophenone, 2 parts of stearic acid and 10 parts of calcium carbonate, placing TPU and SBS in a stirring tank, uniformly mixing, adding the naphthenic oil, after the naphthenic oil is sufficiently absorbed, adding the rest materials into the stirring tank, uniformly stirring, transferring the materials into a double-screw extruder, extruding and granulating, regulating the rotating speed of the double-screw extruder to 200-250 r/mim, regulating the temperature to 150-180 ℃, cutting and granulating by using low-temperature water, spin-drying, drying at the temperature of 110 ℃ for 4 hours, cooling, preparing a sample and testing.
The injection-molded shoe sole material obtained by the method is subjected to performance test, and the specific test method is as follows:
the tensile property test method comprises the following steps: preparing a sample according to a GB/T528-2009 method, and setting the stretching speed of a tensile machine to be 500 mm/min;
tear strength test method: samples were prepared according to the method of GB/T529-2008, with a set draw rate of 500 mm/min.
Shore A hardness test method: testing by adopting a GJ-GS-MB Shore hardness tester of high-speed railway GmbH according to GB/T531.1-2008, and setting the testing temperature as room temperature;
the peel strength test method comprises the following steps: the tensile rate of a tensile machine is set to be 500mm/min according to a sample prepared by the method of GB/T2792-2014.
Table 1: performance test meter
The test results in table 1 show that the injection-molded sole material provided by the invention has good mechanical properties and good adhesion with the surface of PU leather.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a sole material of moulding plastics that is used for PU leather vamp to exempt from to brush gluey bonding which characterized in that: the injection molding sole material comprises the following raw materials in parts by weight: 100 parts of mixed rubber material, 30-40 parts of plasticizer, 10-20 parts of compatilizer, 1-3 parts of antioxidant, 1-3 parts of ultraviolet absorber, 1-3 parts of stearic acid and 5-15 parts of calcium carbonate, wherein the plasticizer comprises naphthenic oil.
2. The injection molding sole material used for the glue-free adhesion of the PU leather upper surface according to claim 1, wherein: 60-80 parts of TPU in the mixed rubber material, and 20-40 parts of SBS in the mixed rubber material.
3. The injection molding sole material used for the glue-free adhesion of the PU leather upper surface according to claim 2, wherein: the SBS is at least one of thermoplastic styrene-butadiene rubber SBS3411, thermoplastic styrene-butadiene rubber SBS1301, thermoplastic styrene-butadiene rubber SBS3546 and thermoplastic styrene-butadiene rubber SBS 1401.
4. The injection molding sole material used for the glue-free adhesion of the PU leather upper surface according to claim 2, wherein: the TPU is at least one of thermoplastic polyurethane elastomer rubber UT7-70AU, thermoplastic polyurethane elastomer rubber UT6-85AU, thermoplastic polyurethane elastomer rubber 3685AU and thermoplastic polyurethane elastomer rubber 3690 AU.
5. The injection molding sole material used for the glue-free adhesion of the PU leather upper surface according to claim 1, wherein: the compatilizer is at least one of maleic anhydride grafted SBS, maleic anhydride grafted POE and maleic anhydride grafted EPDM.
6. The injection-molded shoe sole material for the glue-brushing-free bonding of the PU leather shoe upper surface according to claim 1, which is prepared by the following steps:
(1) mixing the used materials: adding the mixed rubber material into a stirring tank, regulating the rotation speed to 30-50 r/min, stirring at 40-50 ℃ for 1-2 min, adding the plasticizer, continuously stirring for 8-10 min, adding the rest raw materials into the stirring tank, stirring for 30min, opening a discharge door, discharging, cooling and bagging;
(2) and (3) extruding and granulating: and (3) regulating the rotating speed of the double-screw extruder to 200-250 r/min, regulating the temperature to 150-180 ℃, cutting and granulating by adopting low-temperature water, drying by spin-drying, drying for 4 hours at the temperature of 110 ℃, cooling and bagging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110948948.XA CN113831721A (en) | 2021-08-18 | 2021-08-18 | Injection-molded sole material for PU leather shoe surface free of glue brushing adhesion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110948948.XA CN113831721A (en) | 2021-08-18 | 2021-08-18 | Injection-molded sole material for PU leather shoe surface free of glue brushing adhesion |
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| CN113831721A true CN113831721A (en) | 2021-12-24 |
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| CN202110948948.XA Pending CN113831721A (en) | 2021-08-18 | 2021-08-18 | Injection-molded sole material for PU leather shoe surface free of glue brushing adhesion |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491022A (en) * | 2022-10-14 | 2022-12-20 | 温州市海羽新材料科技有限公司 | PU leather shoes are with exempting from to brush sticky modified TPU bed charge |
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2021
- 2021-08-18 CN CN202110948948.XA patent/CN113831721A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115491022A (en) * | 2022-10-14 | 2022-12-20 | 温州市海羽新材料科技有限公司 | PU leather shoes are with exempting from to brush sticky modified TPU bed charge |
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