CN116141800A - Foaming thermoplastic elastomer/cloth composite coiled material and preparation method and application thereof - Google Patents
Foaming thermoplastic elastomer/cloth composite coiled material and preparation method and application thereof Download PDFInfo
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- CN116141800A CN116141800A CN202310090305.5A CN202310090305A CN116141800A CN 116141800 A CN116141800 A CN 116141800A CN 202310090305 A CN202310090305 A CN 202310090305A CN 116141800 A CN116141800 A CN 116141800A
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- thermoplastic elastomer
- coiled material
- foaming
- insole
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- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000005187 foaming Methods 0.000 title claims abstract description 60
- 239000004744 fabric Substances 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 9
- 239000000314 lubricant Substances 0.000 claims abstract description 9
- 239000002667 nucleating agent Substances 0.000 claims abstract description 9
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 239000004595 color masterbatch Substances 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 14
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- 238000007731 hot pressing Methods 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 12
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 9
- 238000013329 compounding Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000004080 punching Methods 0.000 claims description 5
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- 229920001778 nylon Polymers 0.000 claims description 4
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- 229920002614 Polyether block amide Polymers 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
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- VPRUMANMDWQMNF-UHFFFAOYSA-N phenylethane boronic acid Chemical compound OB(O)CCC1=CC=CC=C1 VPRUMANMDWQMNF-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
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- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 1
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- 229920006124 polyolefin elastomer Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
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Images
Classifications
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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
- C08J9/04—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
- C08J9/12—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 physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
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- A43B17/003—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material
- A43B17/006—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined characterised by the material multilayered
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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- C—CHEMISTRY; METALLURGY
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- C08J2203/08—Supercritical fluid
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- C—CHEMISTRY; METALLURGY
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- Engineering & Computer Science (AREA)
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses a foaming thermoplastic elastomer/cloth composite coiled material, a preparation method and application thereof, and relates to the technical field of foaming materials. In the foamed thermoplastic elastomer/cloth composite coiled material, the average cell size of the foamed thermoplastic elastomer is 50-150 mu m, and the density is 0.05-0.3 g/cm 3 The peeling strength between the foaming thermoplastic elastomer and the cloth is 0.6-1.5N/cm, and the foaming thermoplastic elastomer comprises the following components in parts by weight: 79-100 parts of thermoplastic elastomer, 0-10 parts of nucleating agent, 0-5 parts of color master batch, 0-5 parts of lubricant and 0-1 part of antioxidant. The foamed thermoplastic elastomer/cloth composite coiled material has good surface quality, elasticity and flexibility, and is suitable for preparing insoles.
Description
Technical Field
The invention relates to the technical field of foaming materials, in particular to a foaming thermoplastic elastomer/cloth composite coiled material, a preparation method and application thereof.
Background
Polymer foam insoles are receiving increasing attention in the market as important suspension components in athletic footwear. The prior foaming insole material comprises a polymer foam sheet layer, cloth, an adhesive layer and the like with the thickness of 3-6 mm, and the shape comprises a flat plate shape and a curved surface shape. The foaming insole is generally processed by three methods, namely, continuous polymer foam coiled material composite cloth is adopted, and is obtained through punching and die pressing, and representative examples are continuous cutting foaming ethylene-vinyl acetate copolymer (EVA) plates or die pressing foaming thermoplastic polyurethane elastomer rubber (TPU) plates to obtain foaming coiled materials with specific thickness; secondly, cutting a small-size foaming plate to obtain a sheet with proper thickness, and performing lamination, hot pressing and cooling shaping to obtain the polyurethane thermoplastic foaming particle (ETPU) foaming insole; thirdly, a Polyurethane (PU) foaming stock solution is poured into a mould to realize the processing method of foaming, bonding and shaping integration, and the representative examples are a foaming PU insole and a PU/ETPU insole.
The foamed EVA sheet and the foamed TPU sheet are generally processed by adopting mould pressing foaming, wherein the EVA foamed sheet is mostly foamed by adopting a chemical foaming agent, and the TPU foamed sheet is foamed by adopting a supercritical fluid as the foaming agent. The size of the foaming plate is limited by the size of the mould, the cutting and cloth pasting efficiency of the single-bed foaming plate is low, the material loss is large, and the foaming plate is not welcome by insole processing enterprises. In order to improve the processing efficiency of the insole, manufacturers often adhere tens or tens of foamed plates of the insole through gluing, and continuously cut the foamed plates to obtain the foamed coiled material with specific thickness. However, the consistency of the thickness of the foamed sheet is not ideal, and the multi-bed foamed sheet is more difficult to align, so that two sides are required to be peeled during cutting, and the material is wasted; secondly, hard bonding areas exist in the cut foaming coiled material, and the areas need to be avoided during punching, so that material waste is caused, and the continuous processing efficiency is reduced; in addition, the EVA foaming material also has the problems of residual chemical foaming agent and cross-linking agent, poor elasticity and compression performance of the material, difficult melting recovery of molecular chain cross-linking and the like. Besides the common problems in the sectioning and using processes, the TPU plate extrusion, the supercritical fluid long-time immersion, the rapid pressure relief foaming, the shaping and leveling of the foaming product and the like are involved in the TPU plate extrusion foaming process, so that the TPU foaming material has the problems of low processing efficiency, complicated processing process and easiness in generating large-size holes in the material, and the processing cost of the material is increased and the popularization of the technology is limited. The ETPU insole is a high-elastic thermoplastic elastomer foaming insole developed in recent years, and adopts steam molding to obtain small-size ETPU bead molded body slabs or plates, and a single product is cut, pasted with cloth and shaped to obtain the high-performance foaming insole. While thermoplastic characteristics allow for the melt recovery of scrap, they are inefficient to process. The PU foaming stock solution is very mature in pouring molding mode, a large number of moulds and a large number of manpower are used in the processing process, the processing process efficiency is very low, and the problem that the PU foaming material is difficult to recycle due to molecular chain crosslinking is also existed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a foaming thermoplastic elastomer/cloth composite coiled material, a preparation method and application thereof, wherein the foaming thermoplastic elastomer/cloth composite coiled material can be continuously produced in a large scale, can be continuously punched when being used for preparing insoles, has high processing efficiency, and has good elasticity and mechanical properties.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a foamed thermoplastic elastomer/cloth composite coiled material, wherein the foamed thermoplastic elastomer has an average cell size of 50-150 mu m and a density of 0.05-0.3 g/cm 3 The peeling strength between the foaming thermoplastic elastomer and the cloth is 0.6-1.5N/cm, and the foaming thermoplastic elastomer comprises the following components in parts by weight: 79-100 parts of thermoplastic elastomer, 0-10 parts of nucleating agent, 0-5 parts of color master batch, 0-5 parts of lubricant and 0-1 part of antioxidant. The composite coiled material can be ensured to have certain elasticity and flexibility by controlling the average cell size and the average density of the foaming thermoplastic elastomer and the peeling strength between the foaming thermoplastic elastomer and the cloth, so that the application requirements of the foaming insole field are met.
Preferably, the foamed thermoplastic elastomer comprises the following components in parts by weight: 85 to 95.7 parts of thermoplastic elastomer, 2 to 5 parts of nucleating agent, 1 to 3 parts of lubricant and 0.1 to 0.5 part of antioxidant. The addition of small amounts of nucleating agents, lubricants and antioxidants can improve processability and uniformity of the foamed thermoplastic elastomer/cloth composite web.
Preferably, the thermoplastic elastomer is at least one of thermoplastic polyurethane elastomer, thermoplastic polyester elastomer and thermoplastic nylon elastomer. The three elastomers can be recovered by 100% melting, and have good stability after being compounded with cloth.
Meanwhile, the invention also discloses a preparation method of the foamed thermoplastic elastomer/cloth composite coiled material, which comprises the following steps:
(1) Mixing the components according to the proportion, extruding by a double-screw extrusion casting machine, drawing by a pair of rollers, and cooling to obtain a first thermoplastic elastomer coiled material;
(2) Placing the first thermoplastic elastomer coiled material into supercritical N 2 Soaking in fluid, taking out, cooling to obtain a soaked thermoplastic elastomer coiled material, and then locking gas at the temperature of-18-0 ℃ for 1-12 h to obtain a second thermoplastic elastomer coiled material containing a foaming agent;
(3) Foaming the second thermoplastic elastomer coiled material containing the foaming agent, maintaining the foaming end point temperature unchanged after the foaming is finished, drawing by a tension roller to obtain a third thermoplastic elastomer coiled material, hot-pressing and compounding the third thermoplastic elastomer coiled material and cloth by a compounding roller, cooling by a cooling roller, rectifying and winding to obtain the foaming thermoplastic elastomer/cloth compound coiled material.
The method utilizes the thermal deformation in the foaming process of the thermoplastic elastomer and the in-situ compounding of the cloth, and is obtained through continuous rolling and hot/cold shaping, and no external heating melt adhesive or glue is needed in the processing process, so that the method has the advantages of environmental protection and cost saving, and is suitable for mass production.
Preferably, in the step (1), the thickness of the first thermoplastic elastomer coiled material is 2-5 mm; in step (2), the supercritical N 2 The immersion time of the fluid is 5-8 h; in the step (3), the foaming end temperature is 140-160 ℃, and the third thermoplastic elastomer coiled material is compounded with a single surface or double surfaces of the cloth; the temperature of the composite roller is 160-180 ℃, the temperature of the cooling roller is 4-20 ℃, and the thickness of the foamed thermoplastic elastomer is compressed to 70-85% before rolling by the composite roller, and the thickness compression ratio is 15-30%. The preparation conditions are limited to control the stability of the processing process and improve the uniformity of the composite coiled material.
In addition, the invention also discloses a flat insole, which is prepared from the foaming thermoplastic elastomer/cloth composite coiled material, and the preparation method comprises the following steps: punching the foamed thermoplastic elastomer/cloth composite coiled material to obtain the flat insole. The average thickness of the flat insole is 3-6 mm, and the density is 0.05-0.3 g/cm 3 。
In addition, the invention also discloses a curved insole, which is obtained by hot pressing, cooling and shaping on the basis of the flat insole; the hot pressing conditions are as follows: 150-190 ℃ for 30-300 s; the cooling and shaping conditions are as follows: 4-25 ℃ for 60-180 s; preferably, the hot pressing conditions are: 170-190 ℃ for 120-200 s; the cooling shaping condition is 5 to over15 ℃ for 100-180 s. The density of the curved insole is 0.1-0.35 g/cm 3 . The above limitation on the hot pressing and cooling shaping conditions can obtain a material with proper dimensional accuracy, and insufficient hot pressing or cooling can lead to insufficient dimensional accuracy, poor uniformity of the material and increase of the density of the material.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides the foamed thermoplastic elastomer/cloth composite coiled material with good surface quality, elasticity and flexibility by limiting the average cell size, the average density and the peeling strength of the foamed thermoplastic elastomer and cloth, and the composite coiled material is suitable for preparing insoles and has higher comfort level.
Drawings
FIG. 1 is an optical view of the upper and lower surfaces of the flat insole of example 14;
fig. 2 is an optical view of the upper and lower surfaces of the curved insole of example 27.
Detailed Description
For a better description of the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific examples.
In the following examples, the experimental methods used are conventional methods unless otherwise specified, and the materials, reagents, etc. used are commercially available.
Materials:
thermoplastic polyurethane elastomer: TPU, HF-1385AX, huafeng;
thermoplastic polyester elastomer: TPEE,1028D, basf, germany;
thermoplastic nylon elastomer: PEBA,3010, xubang new material technologies inc;
polyolefin elastomer 1: EVA,360, dupont usa;
polyethylene elastomer 2: POE,8150, dow chemical company, usa;
styrene elastomer: SEBS, H1053, japan xu chemical;
cloth: synthetic fiber cloth, commercially available
Nucleating agent: micron-sized calcium carbonate, commercially available;
and (3) a lubricant: paraffin wax, commercially available;
toner: organic toner, commercially available;
an antioxidant: antioxidant 1010, commercially available.
The cloth, nucleating agent, lubricant, toner and antioxidant used in the examples are all the same commercial products.
Examples 1 to 9
Examples of the foamed thermoplastic elastomer/cloth composite coiled material of the invention, the formulation and preparation conditions of the composite coiled materials of examples 1 to 9 are shown in table 1, and the preparation method is as follows:
(1) Mixing the components according to the proportion, extruding by a double-screw extrusion casting machine, drawing by a pair of rollers, and cooling by a cooling roller to obtain a first thermoplastic elastomer coiled material, wherein the temperature of each temperature zone of the extruder is 130 ℃, 180 ℃, 190 ℃, 180 ℃ and the temperature of the cooling roller is 10 ℃;
(2) Placing the first thermoplastic elastomer coiled material into supercritical N 2 Soaking in fluid, taking out to obtain a soaked thermoplastic elastomer coiled material, and then locking gas at low temperature to obtain a second thermoplastic elastomer coiled material containing a foaming agent;
(3) And (3) performing constant-temperature physical foaming on the second thermoplastic elastomer coiled material containing the foaming agent, maintaining the foaming end temperature unchanged after the foaming is finished, drawing by using a tension roller to obtain a third thermoplastic elastomer coiled material, performing hot-pressing compounding on the third thermoplastic elastomer coiled material and cloth by using a compounding roller, cooling by using a cooling roller, rectifying and winding to obtain the foamed thermoplastic elastomer/cloth compound coiled material.
The average thickness, uniformity, average density, average cell size, and peel strength between the foamed thermoplastic elastomer and the cloth of the foamed thermoplastic elastomer/cloth composite coil described in the examples were tested, and the test results are shown in table 1, and the test method is as follows:
density: the water drainage method is adopted for testing, and the standard is HG/T2872-2009.
Average cell size: the cross section of the foamed sample was examined by SEM and the average of the cell sizes of 100 or more was counted.
Peel strength: the standard was GB/T1130-1991, measured according to the tear strength test method for elastomers.
Uniformity: the thickness variation of the product is measured by a thickness gauge, the thickness deviation of the sample is defined as uniform when the thickness deviation is lower than 5%, the thickness deviation is defined as more uniform when the thickness deviation is 5-10%, and the thickness deviation is defined as nonuniform when the thickness deviation exceeds 10%.
Table 1 (weight portions)
Examples 10 to 13
Examples 10 to 13 of the foamed thermoplastic elastomer/cloth composite roll material according to the present invention differ from example 1 only in that the thermoplastic elastomer used was TPEE, PEBA, EVA, SEBS.
Examples 14 to 26
Examples 14 to 26 of the flat insole according to the present invention were obtained by continuous punching from examples 1 to 13, respectively, and the optical patterns of the upper and lower surfaces of the flat insole according to example 14 are shown in fig. 1.
The flat shoe pad was tested for elasticity, hardness, average cell size, density, peel strength of the foamed thermoplastic elastomer and cloth, and the test results are shown in table 2, and the test method is as follows:
elasticity: the standard was GB/T10652-2001, measured according to the vertical rebound method.
Hardness: the standard is SATRA TM205, HG/T2489-2007 (hardness test method for footwear materials) according to the Shore C assay.
TABLE 2
As can be seen from Table 2, the density of the flat insole of the invention is 0.25g/cm 3 In the inside, the elasticity is higher than 45%, the Shore C hardness is in the range of 20-45, the hardness is moderate, the comfort level is higher, the wear resistance is good, the peeling strength of the foaming thermoplastic elastomer and cloth in the flat insole is higher than 0.5N/cm, the comprehensive performance is higher, and the flat insole is suitable for industrial mass production.
As a result of the performance test of comparative example 14 and examples 16 to 20, it was found that the components of the foamed thermoplastic elastomer according to the present invention are preferably: 85 to 95.7 parts of thermoplastic elastomer, 2 to 5 parts of nucleating agent, 1 to 3 parts of lubricant and 0.1 to 0.5 part of antioxidant. When the conditions are met, the peeling strength of the foaming thermoplastic elastomer and the cloth in the flat insole is relatively high, and the stability and the durability of the insole are better.
As a result of the performance test of comparative examples 14 to 16 and example 21, it was found that the foaming temperature had a great influence on the performance of the flat insole, and the overall performance of the flat insole was better when the foaming temperature was 140 to 160 ℃. When the foaming temperature is not within the above preferred range, uniformity of the insole is poor, and further, it is possible to cause the Shore C hardness of the insole to be higher than 40, and comfort is relatively poor.
As a result of the performance test of comparative examples 14 and 22, it was found that when foamed thermoplastic elastomers were produced, too high a thickness of the first thermoplastic elastomer web reduced the elasticity of the product, and the thickness of the first thermoplastic elastomer web was preferably 2 to 5mm.
As a result of the test in comparative example 14 and examples 23 to 26, it was found that, when preparing a flat shoe sole, at least one of thermoplastic polyurethane elastomer, thermoplastic polyester elastomer and thermoplastic nylon elastomer was preferable as the raw material for preparing the foamed thermoplastic elastomer.
Examples 27 to 31
In the embodiment of the curved insole of the present invention, examples 27 to 31 are prepared from the flat insole of example 14, and the flat insole is hot-pressed by using a mold and then cooled and shaped to obtain the curved insole. Specific preparation conditions are shown in Table 3, and optical diagrams of the upper and lower surfaces of the curved insole of example 27 are shown in FIG. 2.
The density, average thickness, uniformity, peel strength between the foamed thermoplastic elastomer and the cloth, elasticity, and hardness of the curved insole were tested, and the test results are shown in table 3, and the test method is as follows:
TABLE 3 Table 3
As a result of the performance test in comparative examples 27 to 31, it was found that the hot-pressing and cooling conditions had a great influence on the performance of the curved insole, and that when the hot-pressing conditions were: the cooling and shaping conditions are that the temperature is 170-190 ℃ and the temperature is 120-200 s: the prepared curved insole has low density, high stability (high peeling strength) and good uniformity at the temperature of 5-15 ℃ for 100-180 seconds.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (10)
1. A foamed thermoplastic elastomer/cloth composite coiled material, characterized in that the foamed thermoplastic elastomer has an average cell size of 50-150 mu m and a density of 0.05-0.3 g/cm 3 The peel strength between the foamed thermoplastic elastomer and the cloth is 0.6-1.5N/cm, and the foamed thermoplastic elastomer comprises the following components in parts by weightThe components are as follows: 79-100 parts of thermoplastic elastomer, 0-10 parts of nucleating agent, 0-5 parts of color master batch, 0-5 parts of lubricant and 0-1 part of antioxidant.
2. The foamed thermoplastic elastomer/cloth composite web of claim 1, wherein the foamed thermoplastic elastomer comprises the following components in parts by weight: 85 to 95.7 parts of thermoplastic elastomer, 2 to 5 parts of nucleating agent, 1 to 3 parts of lubricant and 0.1 to 0.5 part of antioxidant.
3. The foamed thermoplastic elastomer/cloth composite web of claim 1, wherein the thermoplastic elastomer is at least one of a thermoplastic polyurethane elastomer, a thermoplastic polyester elastomer, and a thermoplastic nylon elastomer.
4. A method of producing a foamed thermoplastic elastomer/cloth composite web as claimed in any one of claims 1 to 3, comprising the steps of:
(1) Mixing the components according to the proportion, extruding by a double-screw extrusion casting machine, drawing by a pair of rollers, and cooling to obtain a first thermoplastic elastomer coiled material;
(2) Placing the first thermoplastic elastomer coiled material into supercritical N 2 Soaking in fluid, taking out, cooling to obtain a soaked thermoplastic elastomer coiled material, and then locking gas at the temperature of-18-0 ℃ for 1-12 h to obtain a second thermoplastic elastomer coiled material containing a foaming agent;
(3) Foaming the second thermoplastic elastomer coiled material containing the foaming agent, maintaining the foaming end point temperature unchanged after the foaming is finished, drawing by a tension roller to obtain a third thermoplastic elastomer coiled material, hot-pressing and compounding the third thermoplastic elastomer coiled material and cloth by a compounding roller, cooling by a cooling roller, rectifying and winding to obtain the foaming thermoplastic elastomer/cloth compound coiled material.
5. The method of claim 4, wherein in step (1), the first thermoplastic elastomer web has a thickness of 2 to 5mm; in the step (2), the step of (C),the supercritical N 2 The immersion time of the fluid is 5-8 h; in the step (3), the foaming end temperature is 140-160 ℃, and the third thermoplastic elastomer coiled material is compounded with the cloth on one side or two sides.
6. A flat shoe pad prepared from the foamed thermoplastic elastomer/cloth composite coiled material according to any one of claims 1 to 3, which is prepared by the following steps: punching the foamed thermoplastic elastomer/cloth composite coiled material to obtain a flat insole; the average thickness of the flat insole is 3-6 mm, and the density is 0.05-0.3 g/cm 3 。
7. A curved insole prepared from the flat insole according to claim 6, which is prepared by the following steps: and performing hot pressing and cooling shaping on the flat-plate type insole to obtain the curved-surface insole.
8. The contoured insole of claim 7, wherein said heat and pressure conditions are: 150-190 ℃ for 30-300 s; the cooling and shaping conditions are as follows: 4-25 ℃ and 60-180 s.
9. The contoured insole of claim 8, wherein said heat and pressure conditions are: 170-190 ℃ for 120-200 s; the cooling and shaping conditions are as follows: 5-15 deg.c for 100-180 s.
10. A curved insole according to any one of claims 7 to 9, wherein said curved insole has a density of 0.1 to 0.35g/cm 3 。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116770455A (en) * | 2023-06-06 | 2023-09-19 | 中山大学 | Thermoplastic elastomer foam fiber and preparation method and application thereof |
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| TWM588970U (en) * | 2019-10-05 | 2020-01-11 | 加久企業股份有限公司 | TPU foam sole |
| US20200331180A1 (en) * | 2019-04-18 | 2020-10-22 | Feng Tay Enterprises Co., Ltd. | Shoe component and manufacturing method thereof |
| CN113248770A (en) * | 2021-06-01 | 2021-08-13 | 中山大学 | Thermoplastic elastomer physical foaming coiled material and semi-continuous preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200331180A1 (en) * | 2019-04-18 | 2020-10-22 | Feng Tay Enterprises Co., Ltd. | Shoe component and manufacturing method thereof |
| TWM588970U (en) * | 2019-10-05 | 2020-01-11 | 加久企業股份有限公司 | TPU foam sole |
| CN113248770A (en) * | 2021-06-01 | 2021-08-13 | 中山大学 | Thermoplastic elastomer physical foaming coiled material and semi-continuous preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116770455A (en) * | 2023-06-06 | 2023-09-19 | 中山大学 | Thermoplastic elastomer foam fiber and preparation method and application thereof |
| CN116770455B (en) * | 2023-06-06 | 2024-06-11 | 大白熊(广州)新材料科技有限公司 | Thermoplastic elastomer foam fiber and preparation method and application thereof |
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