Elastomer for film covering cloth and non-woven fabric and preparation method of elastomer

Abstract

The elastomer is prepared from TPE thermoplastic rubber and phase change energy storage wax through mutual adsorption and then thermoplastic deep processing, the preparation process is simple, operation is convenient, the non-woven fabric and the film-coated fabric made of the elastomer have a constant temperature function, energy is automatically absorbed and released according to air temperature changes, and the elastic body has the advantages of being high in practicability and wide in application range. According to the present invention, the temperature of the surface of the elastic fabric is controlled, such that the contact part is constantly at the suitable temperature, the whole processing process is free of the adhesive and the solvent, and the product has advantages of excellent softness, strong elasticity, high water resistance, no trace after repeated rubbing folding, no damage after repeated water washing, stretching resistance, no reduction of the elasticity of the elastic fabric when the product is used with the elastic fabric covering film, and difficult separation, difficult cracking and embrittlement of the covering film layer, the problem that traditional non-woven fabric and film covering fabric have defects is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of textile fabric raw material preparation, and in particular to an elastomer for coated fabrics and non-woven fabrics and a preparation method thereof. Background Art

[0002] Thermoplastic elastomers (TPE / TPR), also known as artificial rubber or synthetic rubber. Their products not only possess excellent properties such as high elasticity, aging resistance, oil resistance, and water resistance of traditional cross-linked vulcanized rubber, but also can modify plastics, making them widely used in the rubber industry for manufacturing daily products such as rubber shoes and adhesive tapes, as well as various industrial products such as rubber hoses, tapes, strips, sheets, rubber parts, and adhesives.

[0003] Traditional coated fabrics refer to a new type of fabric material with characteristics such as waterproofing, insulation, and abrasion resistance, which is made by attaching materials with certain properties such as PU, PVC, and TPU to the surface of ordinary fabrics through a coating method. However, the existing coating processes usually first melt the materials and then apply them to the fabric surface by means of scraping or spraying. The processes are complex, the equipment debugging is difficult, and solvents and adhesives are additionally required during the processing. In addition, due to the limitations of the coating materials used in existing coated fabrics, it is difficult to balance the thickness, softness, and warmth retention of existing coated fabrics, and their water resistance, elasticity, and adhesion are not high. The coating layer is prone to peeling off during washing, repeated rubbing, and stretching.

[0004] Traditional non-woven fabrics are made by heating and melting an elastomer and then spraying it into filaments, which are stacked and pressed into shape. Because of their poor elasticity and the hydrophobic properties of the elastomer raw materials used, non-woven fabrics are difficult to clean and are usually used to manufacture disposable products such as masks, shopping bags, and wrapping papers. This makes the use of non-woven fabrics less environmentally friendly and restricts the application of non-woven fabrics and the development of the non-woven fabric industry.

[0005] In view of the defects of the above-mentioned traditional non-woven fabrics and coated fabrics, combined with the excellent properties of thermoplastic elastomers (TPE / TPR), it is necessary to invent an elastomer for coated fabrics and non-woven fabrics using TPR thermoplastic rubber as a raw material and a preparation method thereof. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: In order to overcome the problems existing above, an elastomer for coated fabrics and non-woven fabrics and a preparation method thereof are provided, which have the advantages of simple process, convenient operation, excellent softness, strong elasticity, high water resistance, no traces after repeated rubbing and folding, not damaged after repeated washing, resistance to stretching, not easy to detach, crack, or become brittle, effectively solving the problems of the defects existing in traditional non-woven fabrics and coated fabrics.

[0007] The technical solution adopted by the present invention to solve its technical problems is:

[0008] An elastomer for coated fabrics and non-woven fabrics, which is made by thermoplastic deep processing after the mutual adsorption of TPE thermoplastic rubber and phase change energy storage wax. The finished product is an elastic film, sheet, elastic tube, elastic strip or granule, and the melt index MI at 190°C with 2.16 kg is 0.11 - 3170 g / 10 min;

[0009] The varieties of the TPE thermoplastic rubber include one of SEBS, SEPS, and SEEPS;

[0010] The phase change temperature of the phase change energy storage wax is 15 - 55°C;

[0011] When the SEBS material is selected for the TPE thermoplastic rubber, the elastomer includes 71 - 95 parts by weight of the SEBS material and 5 - 29 parts by weight of the phase change energy storage wax;

[0012] When the SEPS or SEEPS material is selected for the TPE thermoplastic rubber, the elastomer includes 14 - 95 parts by weight of the SEPS or SEEPS material and 5 - 86 parts by weight of the phase change energy storage wax.

[0013] Furthermore, the SEBS material includes a low molecular weight SEBS rubber model and a high molecular weight SEBS rubber model.

[0014] Furthermore, the SEPS material includes a low molecular weight SEPS rubber model and a high molecular weight SEPS rubber model.

[0015] Furthermore, the SEEPS material includes a low molecular weight SEEPS rubber model and a high molecular weight SEEPS rubber model.

[0016] Furthermore, when the elastomer adopts a ratio with a low content of TPE thermoplastic rubber, the TPE thermoplastic rubber adopts a high molecular weight rubber model, and when the elastomer adopts a ratio with a high content of TPE thermoplastic rubber, the TPE thermoplastic rubber adopts a low molecular weight rubber model.

[0017] Furthermore, the phase change energy storage wax specifically includes one of eight kinds with phase change temperatures of 15°C, 18°C, 20°C, 27°C, 32°C, 35°C, 40°C, and 55°C.

[0018] The preparation method of the above-mentioned elastomer for coated fabrics and non-woven fabrics includes the following steps:

[0019] 1) Prepare the raw materials of TPE thermoplastic rubber and phase change energy storage wax according to the ratio;

[0020] 2) Melt and keep the phase change energy storage wax, which is solid at room temperature, for standby, and directly use the phase change wax, which is liquid at room temperature;

[0021] 3) Put the TPE thermoplastic rubber into a stirrer or kneader;

[0022] 4) Add the phase change energy storage wax obtained in step 2) to the stirrer or kneader where the TPE thermoplastic rubber is located in portions, so that the phase change energy storage wax is evenly dispersed into the TPE thermoplastic rubber in portions and absorbs and fuses with each other until all the phase change energy storage wax is put into the stirrer or kneader;

[0023] 5) Continue to stir with a stirrer or knead with a kneader until the phase change energy storage wax and the TPE thermoplastic rubber are fully adsorbed and mixed evenly to obtain a semi-finished elastomer;

[0024] 6) Measure the melt index of the semi-finished elastomer obtained in step 5), compare it with the standard melt index in the process formulation. If the melt indexes are the same, proceed to the next step; otherwise, clean the stirrer or kneader and return to step 1);

[0025] 7) According to the standard melt index in the process formulation, for those with a melt index MI of < 3 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into an elastic film by blow molding or casting, or processed into elastic tubes, elastic strips, or granules by extrusion. For those with a melt index MI of 3 - 25 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into an elastic sheet by calendering. For those with a melt index MI > 25 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into a coated fabric by film coating, or non-woven fabric can also be processed by meltblowing.

[0026] Furthermore, the elastomer with a high melt index is prepared by combining a low molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a low phase change temperature, or by combining a low content of a TPE thermoplastic rubber and a high content of a phase change energy storage wax.

[0027] Furthermore, the elastomer with a low melt index is prepared by combining a high molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a high phase change temperature, or by combining a high content of a TPE thermoplastic rubber and a low content of a phase change energy storage wax.

[0028] The beneficial effects of the present invention are as follows: An elastomer for coated fabrics and non-woven fabrics and its preparation method are made by the mutual adsorption of TPE thermoplastic rubber and phase change energy storage wax. The process is simple and easy to operate. The non-woven fabrics and coated fabrics made of the elastomer have a constant temperature function, automatically absorbing and releasing energy according to temperature changes, keeping the parts in contact therewith at a suitable temperature. The whole process of coated fabric processing does not use adhesives and solvents, and the product has excellent softness, strong elasticity, high water resistance, no marks after repeated rubbing and folding, not damaged after repeated washing, high tensile resistance, and does not reduce the elasticity of the elastic fabric when used for coating the elastic fabric. The coating layer has the advantages of not being easy to detach, crack or become brittle, effectively solving the problems existing in traditional non-woven fabrics and coated fabrics. Detailed implementation mode

[0030] An elastomer for coated fabrics and non-woven fabrics, the elastomer is made by the mutual adsorption of TPE thermoplastic rubber and phase change energy storage wax, and the finished product is an elastic film, sheet, elastic tube, elastic strip or granule, and the melt index MI at 190 °C and 2.16 kg is 0.11 - 3170 g / 10 min.

[0031] The varieties of the TPE thermoplastic rubber include: one of SEBS, SEPS, and SEEPS.

[0032] The SEBS materials include YH501T and YH561T of Baling Petrochemical Company, China National Petroleum Corporation. Among them, YH501T is a low molecular weight SEBS rubber model, and YH561T is a high molecular weight SEBS rubber model.

[0033] The SEPS materials include YH4051 and YH4053 of Baling Petrochemical Company, China National Petroleum Corporation. Among them, YH4051 is a low molecular weight SEPS model, and YH4053 is a high molecular weight SEPS model.

[0034] The SEEPS materials include SEPTON4033 and SEPTON4055 of KURARAY Company, Japan. Among them, SEPTON4033 is a low molecular weight SEEPS model, and SEPTON4055 is a high molecular weight SEEPS rubber model.

[0035] The phase change temperature of the phase change energy storage wax is 15 - 55 °C. Specifically, the phase change energy storage wax includes one of eight kinds with phase change temperatures of 15 °C, 18 °C, 20 °C, 27 °C, 32 °C, 35 °C, 40 °C, and 55 °C.

[0036] That is, an elastomer is made by selecting one combination from the phase change energy storage wax and the TPE thermoplastic rubber.

[0037] When the SEBS material is selected as the TPE thermoplastic rubber, the elastomer comprises, by weight parts, 71 - 95 parts of the SEBS material and 5 - 29 parts of the phase change energy storage wax.

[0038] When the SEPS or SEEPS material is selected as the TPE thermoplastic rubber, the elastomer comprises, by weight parts, 14 - 95 parts of the SEPS or SEEPS material and 5 - 86 parts of the phase change energy storage wax.

[0039] When the content of the TPE thermoplastic rubber (SEBS, SEPS, SEEPS) is less than 14%, and the content of the phase change wax is greater than 86%, separation is likely to occur between the phase change wax and the rubber material, the wax powder falls off, or the wax is easily separated by external forces, such as being easily scraped off and delaminated. Especially when stretched and elongated by external forces, the phase change wax segregates in powder form, resulting in poor practicality.

[0040] When the content of the TPE thermoplastic rubber (SEBS, SEPS, SEEPS) is greater than 95%, and the content of the phase change wax is less than 5%, the softening degree of the rubber is weak, the melt index is low, the processing difficulty is too great, and the practicality is also poor.

[0041] Therefore, when the elastomer adopts a formulation with a low TPE rubber content, a high - molecular - weight rubber type is used for the TPE rubber; when the elastomer adopts a formulation with a high TPE rubber content, a low - molecular - weight rubber type is used for the TPE rubber.

[0042] The preparation method of the above - mentioned elastomer for coated fabrics and non - woven fabrics comprises the following steps:

[0043] 1) Prepare the raw materials of the TPE thermoplastic rubber and the phase change energy storage wax according to the formulation. The TPE thermoplastic rubber is a specific one among the three major types of materials, namely SEBS, SEPS, and SEEPS. For example, SEPS includes YH4051 of Baling Petrochemical Company, Sinopec Group. The phase change energy storage wax is selected from one of the phase change temperatures of 15°C, 18°C, 20°C, 27°C, 32°C, 35°C, 40°C, 55°C, such as the 55°C phase change energy storage wax;

[0044] 2) Melt and keep warm the phase change energy storage wax that is solid at room temperature for standby, and directly use the phase change wax that is liquid at room temperature;

[0045] In another possible embodiment, for the phase change energy storage wax that is solid at room temperature (such as the 55°C phase change wax), in step 2), only the phase change energy storage wax needs to be crushed, and in the subsequent steps, by using the heating function of a stirrer or kneader, it is melted into a molten state during the mixing of the TPE thermoplastic rubber.

[0046] 3) Put the TPE thermoplastic rubber into a stirrer or kneader to fully mix the TPE thermoplastic rubber. At the same time, turn on the heating function in the stirrer or kneader. The heating temperature of the stirrer or kneader is more than 15 °C higher than the phase transition temperature of the selected phase change energy storage wax, achieving the effects of preheating and softening the TPE thermoplastic rubber, accelerating the speed of the TPE thermoplastic rubber absorbing the phase change energy storage wax, and making it easier for the phase change energy storage wax to be mixed with the TPE thermoplastic rubber in the subsequent steps;

[0047] 4) Add the molten phase change energy storage wax obtained in step 2) to the stirrer or kneader where the TPE thermoplastic rubber is located in batches, so that the phase change energy storage wax is evenly dispersed into the TPE thermoplastic rubber in batches, and they absorb and fuse with each other during the heating and temperature rising process until all the molten phase change energy storage wax is put into the stirrer or kneader;

[0048] 5) Continue to stir through the stirrer or knead through the kneader until the phase change energy storage wax and the TPE thermoplastic rubber are fully mixed to obtain a semi-finished elastomer;

[0049] 6) Measure the melt index of the semi-finished elastomer obtained in step 5), and compare it with the standard melt index in the process formula. If the melt indexes are the same, proceed to the next step; otherwise, clean the stirrer or kneader and return to step 1);

[0050] 7) According to the standard melt index in the process formula, further carry out thermoplastic deep processing. Specifically:

[0051] For those with a melt index MI of < 3 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into an elastic film (thick film or thin film) by blow molding, casting, or processed into an elastic tube, elastic strip, or particles by extrusion;

[0052] For those with a melt index MI of 3 - 25 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into an elastic sheet by calendering;

[0053] For those with a melt index MI > 25 g / 10 min at 190 °C and 2.16 kg, the semi-finished elastomer is processed into a coated fabric by lamination coating process, or non-woven fabric can also be processed by meltblowing process.

[0054] The above thermoplastic deep processing methods belong to the prior art and will not be elaborated here.

[0055] When selecting the formula, the elastomer with a high melt index is prepared by combining a low molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a low phase transition temperature, or by combining a low content of a TPE thermoplastic rubber and a high content of a phase change energy storage wax.

[0056] An elastomer with a low melt index is prepared by combining a high molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a high phase change temperature, or by combining a high content of a TPE thermoplastic rubber and a low content of a phase change energy storage wax.

[0057] As shown in Table 1, Table 2, and Table 3 below, it is a ratio process table of selecting three major types of materials, SEBS, SEPS, and SEEPS, and different phase change energy storage waxes. According to the ratio process table, 12 specific preparation method examples can be generated.

[0058] Table 1:

[0059]

[0060] Table 2:

[0061]

[0062] Table 3:

[0063]

[0064]

[0065] The elastomer prepared by the above process is used to produce coated fabrics and non-woven fabrics. The raw materials are phase change energy storage wax and TPE thermoplastic rubber, while traditional TPE elastomers use TPE thermoplastic rubber and white mineral oil as raw materials.

[0066] The elastomer described in the present invention uses phase change wax instead of white mineral oil. The main component of the phase change wax is n-alkane, which is more resistant to aging than white mineral oil, less likely to turn yellow, has higher high temperature and weather resistance, and less volatile loss than white mineral oil.

[0067] Generally speaking, when the elastomer described in the present invention is used to manufacture coated fabrics and non-woven fabrics, the coated fabrics and non-woven fabrics are not easy to turn yellow, less likely to fall off from the surface of the coated fabric, and the manufactured non-woven fabric has higher strength.

[0068] The phase change energy storage wax is a solid-liquid phase change energy storage material obtained by further refining on the basis of paraffin wax. It has a high latent heat of phase change and absorbs or releases a large amount of heat during the solid-liquid phase change. It has the functions of energy storage and energy saving, and temperature regulation.

[0069] Generally speaking, when the elastomer described in the present invention is used to manufacture coated fabrics and non-woven fabrics, the coated fabrics and non-woven fabrics have better heat insulation and temperature control performance. For example, when a coated fabric is made into clothing and worn, when going out in the sun in summer, the phase change energy storage wax in the coating layer of the clothes absorbs the heat of the sun and melts for energy storage. The heat will not be directly transferred to the human body, and the human body has time to slowly adapt to the temperature change. This is the temperature control function. When worn in winter, the phase change energy storage wax in the coating layer of the clothes absorbs the heat of the human body and melts for energy storage, and the heat will not be quickly dissipated. This is the heat insulation function.

[0070] When the phase change wax undergoes a phase change according to the change of the external temperature, it absorbs a large amount of heat from the outside or releases a large amount of heat. Therefore, the coated fabric and the non-woven fabric form a microclimate with a relatively constant temperature. If the external temperature is higher than the melting point of the phase change wax, or the skin temperature of the human body is higher than the melting point of the phase change wax due to exercise, the phase change wax changes from solid to liquid and absorbs heat from the surroundings, and the coated fabric and the non-woven fabric produce a refrigeration effect, thereby regulating the temperature. If the external temperature is lower than the melting point of the phase change wax, at this time the phase change wax changes from liquid to solid and releases the heat it stores, and the coated fabric and the non-woven fabric play a buffering role, buffering the change gradient of the human body to the environmental temperature difference.

[0071] The elastomer described in the present invention is a soft and transparent elastomer at high temperature (higher than the phase change point of the phase change energy storage wax). If stretched, it has a high recovery rate of more than 90%. Moreover, the phase change temperature of the phase change energy storage wax used in the elastomer described in the present invention is relatively high, and the thermoplastic elastomer (TPE) and the phase change energy storage wax are highly compatible and adsorbed. At different temperatures, the TPE and the phase change energy storage wax are always fused into a whole. When the temperature is lower than the phase change point and the phase change energy storage wax is in a solid state, the TPE and the phase change energy storage wax are firmly combined and do not separate, and the elasticity and toughness still remain; when the temperature is higher than the phase change point and the phase change wax is in a liquid state, the TPE still adsorbs all of it without precipitation, and the elasticity and toughness are better. That is to say, when the elastomer described in the present invention is used to manufacture coated fabrics and non-woven fabrics, it has good elasticity and tensile resistance, high softness, no marks after repeated rubbing, can be washed repeatedly, high adhesion, and the coating layer is not easy to detach.

[0072] The elastomer semi-finished product described in the present invention is processed into elastic film and sheet products by blow molding, casting, and calendering methods, and can be directly thermocompression laminated with cotton cloth, polyester, and spandex through a laminating machine. Without the need for any additional solvents and adhesives, it can be directly heated and pressed with the cloth to form a coated fabric. Specifically, the elastic film or sheet and the cloth fabric are simultaneously stacked and placed in a laminating machine. The laminating machine has heating, pressing, and cooling functions. Heating softens the elastic film or sheet and partially melts its surface, and then through pressing, the partially melted elastic film or sheet is immersed into the fabric fibers, and then cooled to make the elastic film or sheet return to its normal state, and then leave the laminating machine to complete the entire process of laminating the cloth, and obtain a firmly bonded coated fabric. The whole process of lamination does not require adhesives and solvents.

[0073] This composite can be a single layer of cloth plus a single layer of film, or two layers of cloth sandwiching an elastic film, or two layers of elastic film sandwiching a layer of cloth.

[0074] Hot pressing the cloth is an application advantage of the TPE elastomer film-shaped finished product described in the present invention, which can greatly simplify the process flow of the coated cloth, reduce the cost of purchasing equipment and equipment debugging costs, and simplify the cloth covering operation.

[0075] The elastomer semi-finished product described in the present invention is processed into sheet materials, elastic tubes, elastic strips or granular finished products by extrusion. After these shaped finished products are heated and melted, they are then sprayed into filaments, and the filaments are stacked and pressed into non-woven fabrics. This non-woven fabric has elasticity. This non-woven fabric can be used directly, or it can also be further hot-pressed and compounded with an elastic film locally on one or both sides of the non-woven fabric. The elastic film mentioned here refers to the elastic film and sheet material finished products processed from the elastomer semi-finished product described in the present invention by blow molding, casting, and calendering methods.

[0076] In another possible embodiment, the local part of the non-woven fabric or coated cloth made of the elastomer described in the present invention is reinforced by hot-pressing and compounding with an elastic film. For example, the edge of the non-woven fabric is hot-pressed and laminated with an elastic film or elastic tube or elastic strip for reinforcement. Another example is that at the position where the tent made of the coated cloth rubs against the metal skeleton, multiple elastic films or elastic tubes or elastic strips are hot-pressed and laminated to improve the abrasion resistance and tensile resistance. The elastic film mentioned here refers to the elastic film and elastic sheet material finished products processed from the elastomer semi-finished product described in the present invention by blow molding, casting, and calendering methods. The elastic tube and elastic strip refer to the elastic tube and elastic strip-shaped finished products extruded from the elastomer described in the present invention.

[0077] An elastomer for coated cloth and non-woven fabric and its preparation method according to the present invention are made by the mutual adsorption of TPE thermoplastic rubber and phase change energy storage wax. The process is simple and the operation is convenient. The non-woven fabric and coated cloth made of the elastomer have a constant temperature function, automatically absorb and release energy according to the temperature change, so that the contacted part is kept at a suitable temperature. The whole process of processing the coated cloth has no adhesives and solvents, and the product has excellent softness, strong elasticity, high water resistance, no traces after repeated rubbing and folding, not damaged after repeated washing, high tensile resistance, and does not reduce the elasticity of the elastic cloth when laminated with the elastic cloth. The laminated layer has the advantages of not being easy to separate, crack and become brittle, effectively solving the problems existing in traditional non-woven fabrics and coated cloths.

[0078] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An elastomer for coated fabrics and non-woven fabrics, characterized in that: The elastomer is made by thermoplastic deep processing after the mutual adsorption of TPE thermoplastic rubber and phase change energy storage wax. The finished product is an elastic film, sheet, elastic tube, elastic strip or granule, and the melt index MI at 190°C and 2.16 kg is 0.11 - 3170 g / 10 min; The varieties of the TPE thermoplastic rubber include one of SEBS, SEPS, and SEEPS; The phase change temperature of the phase change energy storage wax is 15 - 55°C; When the SEBS material is selected for the TPE thermoplastic rubber, the elastomer includes 71 - 95 parts by weight of the SEBS material and 5 - 29 parts by weight of the phase change energy storage wax; When the SEPS or SEEPS material is selected for the TPE thermoplastic rubber, the elastomer includes 14 - 95 parts by weight of the SEPS or SEEPS material and 5 - 86 parts by weight of the phase change energy storage wax.

2. The elastomer for coated fabrics and non-woven fabrics according to claim 1, characterized in that: The SEBS material includes a low molecular weight SEBS rubber model and a high molecular weight SEBS rubber model.

3. The elastomer for coated fabrics and non-woven fabrics according to claim 1, characterized in that: The SEPS material includes a low molecular weight SEPS rubber model and a high molecular weight SEPS rubber model.

4. The elastomer for coated fabrics and non-woven fabrics according to claim 1, characterized in that: The SEEPS material includes a low molecular weight SEEPS rubber model and a high molecular weight SEEPS rubber model.

5. The elastomer for coated fabrics and non-woven fabrics according to any one of claims 2, 3, and 4, characterized in that: When the elastomer adopts a ratio with a low content of TPE thermoplastic rubber, the TPE thermoplastic rubber adopts a high molecular weight rubber model. When the elastomer adopts a ratio with a high content of TPE thermoplastic rubber, the TPE thermoplastic rubber adopts a low molecular weight rubber model.

6. The elastomer for coated fabrics and non-woven fabrics according to claim 1, characterized in that: The phase change energy storage wax specifically includes one of eight kinds with phase change temperatures of 15°C, 18°C, 20°C, 27°C, 32°C, 35°C, 40°C, and 55°C.

7. A method for preparing the elastomer for coated fabrics and non-woven fabrics according to claim 1, comprising the following steps: 1) Prepare the raw materials of TPE thermoplastic rubber and phase change energy storage wax according to the ratio; 2) Melt and keep the phase change energy storage wax, which is solid at room temperature, for standby, and directly use the phase change wax, which is liquid at room temperature; 3) Put the TPE thermoplastic rubber into a stirrer or kneader; 4) Add the phase change energy storage wax obtained in step 2) to the stirrer or kneader where the TPE thermoplastic rubber is located in batches, so that the phase change energy storage wax is evenly dispersed into the TPE thermoplastic rubber in batches and absorbs and merges with each other until all the phase change energy storage wax is put into the stirrer or kneader; 5) Continue to stir with a stirrer or knead with a kneader until the phase change energy storage wax and the TPE thermoplastic rubber are fully adsorbed and mixed evenly to obtain a semi-finished elastomer; 6) Measure the melt index of the semi-finished elastomer obtained in step 5), compare it with the standard melt index in the process ratio. If the melt indexes are the same, proceed to the next step. Otherwise, clean the stirrer or kneader and return to step 1); 7) According to the standard melt index in the process ratio, for the elastomer semi-finished product with a melt index MI of < 3 g / 10 min at 190°C under a load of 2.16 kg, it is processed into an elastic film by blow molding or casting, or processed into an elastic tube, elastic strip, or granule by extrusion. For the elastomer semi-finished product with a melt index MI of 3 - 25 g / 10 min at 190°C under a load of 2.16 kg, it is processed into an elastic sheet by calendering. For the elastomer semi-finished product with a melt index MI > 25 g / 10 min at 190°C under a load of 2.16 kg, it is processed into a coated fabric by curtain coating, or non-woven fabric can also be processed by meltblowing.

8. The method for preparing the elastomer for coated fabrics and non-woven fabrics according to claim 6, characterized in that: The elastomer with a high melt index is prepared by combining a low molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a low phase change temperature, or by combining a low content of a TPE thermoplastic rubber and a high content of a phase change energy storage wax.

9. The method for preparing the elastomer for coated fabrics and non-woven fabrics according to claim 6, characterized in that: The elastomer with a low melt index is prepared by combining a high molecular weight TPE thermoplastic rubber and a phase change energy storage wax with a high phase change temperature, or by combining a high content of a TPE thermoplastic rubber and a low content of a phase change energy storage wax.

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