WO2022241900A1 - 一种由废旧热塑性弹性体形成的薄膜及其层合物 - Google Patents
一种由废旧热塑性弹性体形成的薄膜及其层合物 Download PDFInfo
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- WO2022241900A1 WO2022241900A1 PCT/CN2021/101729 CN2021101729W WO2022241900A1 WO 2022241900 A1 WO2022241900 A1 WO 2022241900A1 CN 2021101729 W CN2021101729 W CN 2021101729W WO 2022241900 A1 WO2022241900 A1 WO 2022241900A1
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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
- C08K5/00—Use of organic ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the invention relates to the recycling of waste plastics, especially waste thermoplastic elastomers; more specifically, the invention relates to a film formed from waste thermoplastic elastomers and a laminate thereof.
- Thermoplastic elasticity has plasticity at high temperature and can be replasticized into shape, but it is elastic at room temperature. Due to its excellent mechanical properties, processing properties and weather resistance, thermoplastic elastomers have been developed to a very high level, and new varieties continue to appear, which have replaced some traditional rubber and plastic materials in large quantities, and are widely used in wires and cables. Sealing materials, diaphragm products, shoe industry, automobile industry, machinery industry and various industrial molded products.
- TPE thermoplastic elastomers
- polyamide thermoplastic elastomers copolymerized polyester thermoplastic elastomers
- polyolefin thermoplastic elastomers polyolefin thermoplastic elastomers
- styrene polyolefin thermoplastic elastomers
- amino Formate thermoplastic elastomers thermoplastic vulcanizates, and other thermoplastic elastomers.
- waste thermoplastic elastomers For example, applying waste thermoplastic elastomers to edible products and replacing the non-reusable parts in the edible products is one of the most important problems to be solved in the prior art.
- the purpose of the present invention is to provide a film and its laminate prepared by using waste thermoplastic elastomers, the obtained film can be used for laminating clothing fabrics, laminating shoe fabrics, laminating fabrics for bags, and laminating gloves. Fabrics, fabrics for fitting hats, equipment and food packaging, etc.
- the present invention provides a film prepared from waste thermoplastic elastomers, the thickness of the film is 3 ⁇ m-1000 ⁇ m; in weight percentage (the same below), the film includes:
- thermoplastic elastomer 0%-99% fresh thermoplastic elastomer
- thermoplastic elastomer is more than one selected from the following group: polyester elastomer, nylon elastomer, biologically derived nylon elastomer and biologically derived polyester elastomer;
- the viscosity modifier is a reactive viscosity modifier and/or a non-reactive viscosity modifier, and the non-reactive viscosity modifier is selected from one or more of the following group of substances: paraffin wax, microcrystalline wax, polyethylene wax, oxidized polyethylene Waxes, polypropylene waxes, sasol waxes, hyperbranched polymers, APAO, ethylene bisstearamide, EVA, urea, hydroxylamine hydrochloride, hydroxylamine sulfate, and cyclohexanol; reactive viscosity modifiers are epoxy compounds or Low molecular weight, multifunctional esters or alcohols or amines containing hydroxyl or amino groups;
- the slip agent is one or more selected from the following group: fatty acids and their esters, fatty acid amides, metal soaps, hydrocarbons, organosilicon compounds, stearic acid, butyl stearate and ethylene bisstearamide.
- the waste thermoplastic elastomer used is scrap and/or offcutting.
- the slip agent used is to prevent blocking during the film preparation process, especially during the winding process of the film. Therefore, slip agents are different from lubricants in plastic processing.
- oleic acid amide In the general film-making process, there are three types of slip agents commonly used: oleic acid amide, erucic acid amide, and silicon dioxide (inorganic powder).
- organic slippery agents such as oleic acid amide and erucic acid amide are not suitable for the film of the present invention, mainly showing that a large amount of precipitates are gathered on the surface of the film, and the blooming is serious, which affects the printability, heat sealability and The color also affects the subsequent bonding process.
- the inorganic powder is an anti-blocking agent, which will affect the application and subsequent lamination of the film of the present invention. Therefore, one of the prerequisites for selecting a slip agent in the present invention is not to affect the subsequent lamination.
- the slip agents of the present invention are fatty acids and their esters.
- the viscosity modifier in the present invention is preferably a reactive viscosity modifier, such as a reactive viscosity modifier
- the agent can be more than one alcohol chain extender selected from the following group: 1,4-butanediol (BDO), 1,6-hexanediol, glycerin, trimethylolpropane, diethylene glycol ( DEG), triethylene glycol, neopentyl glycol (NPG), sorbitol, and diethylaminoethanol (DEAE).
- the reactive viscosity modifier is more than one amine and ester chain extender selected from the following group: MOCA, liquid MOCA modified with formaldehyde, ethylenediamine (DA), N,N- Dihydroxy(diisopropyl)aniline (HPA), hydroquinone-bis( ⁇ -hydroxyethyl)ether (HQEE), difunctional acid derivatives, isocyanates, anhydrides, epoxides and glycidyl esters and their polyfunctional groups derivative.
- MOCA liquid MOCA modified with formaldehyde, ethylenediamine (DA), N,N- Dihydroxy(diisopropyl)aniline (HPA), hydroquinone-bis( ⁇ -hydroxyethyl)ether (HQEE), difunctional acid derivatives, isocyanates, anhydrides, epoxides and glycidyl esters and their polyfunctional groups derivative.
- the viscosity regulator is epoxy compound and glycidyl ester and its multifunctional derivatives, because they are close to the structure of thermoplastic elastomer, similarly compatible, and will not affect the moisture permeability and elastic recovery of thermoplastic elastomer film Etc caused the drop and more importantly even helped. More preferred are epoxy compounds with fewer functional groups, glycidyl esters and their multifunctional derivatives, which will not cause violent polymerization; for example, there may be 2-4 functional groups, especially 3 functional groups.
- the prepared film comprises:
- thermoplastic elastomer 0% - 90% fresh thermoplastic elastomer.
- the prepared film comprises:
- thermoplastic elastomer 0% - 10% fresh thermoplastic elastomer.
- the film of the present invention may also include some processing aids, such as antioxidants, UV agents, and the like.
- the film of the present invention can be made into a film of any other color, and at this time, 0.1-45% toner needs to be added to the formula of the film.
- some functional additives can be added to the formula of the film, such as inorganic and organic functional powders such as flame retardants, airgel, infrared powder, graphene, calcium carbonate, titanium dioxide, and phase change materials.
- the ratio is 0-70%, but one of the prerequisites is still that it cannot affect the subsequent fitting. Therefore, the specific selection and dosage need to pay special attention.
- the molding method of film (also can be referred to as sheet under the thicker situation) is: Carry out hot-melt molding extrusion with extruder: cast, blown film, spin into net, extrude to molding pumping Vacuum hole forming, calendering, biaxial stretching, uniaxial stretching; later mechanical drilling: laser, chemical corrosion, needle punching, flower roll pressing, ultrasonic drilling, etc.
- microstructure of the film prepared by the present invention may have holes or no holes in the strict sense, and only molecular gaps exist, as shown in Figures 1-6.
- the film prepared by the present invention (also called a sheet when the thickness is large) can be washed 3-100 times with ISO6330, preferably 3-50 times.
- the typical value of moisture permeability JIS L 1099B1 is 100-180,000.
- the typical value of JIS L 1092 is above 10000mm H 2 O, soft to the touch (elastic modulus value is acceptable within 300MPa, ASTM D882), uniform appearance, no obvious glue spots, suitable for clothing, shoes, gloves, hats, bags
- surface lamination or packaging of special devices that require moisture permeability such as electronic products, electronic devices, etc.
- the purpose of the film prepared by the present invention is one of the following:
- the thickness of the film can be 5 ⁇ m-50 ⁇ m;
- the thickness of the film or sheet can be 10-500 ⁇ m
- the thickness of the film can be 8-80 ⁇ m
- the thickness of the film or sheet can be 50-1000 ⁇ m
- the thickness of the film or sheet may be 15-1000 ⁇ m;
- the prepared film or sheet of the present invention can carry out various surface treatments, and this surface treatment can be various functional treatment coatings or discontinuous coatings, especially printing, functional printing (suitable for UV curable ink , screen printing, thermal transfer printing, O-LED printing, roll printing, computer printing, etc., can be any pattern), hydrophobic treatment, hydrophilic treatment, UV or IR barrier treatment, color treatment, graphene coating, Inorganic or organic functional coatings such as airgel layer, phase change cold, heat, temperature sensitive, pressure sensitive, etc.; it can also be surface chemical burning treatment; it can also be various activations such as surface corona, plasma, oxidation, etc. deal with.
- the thickness of the surface treatment layer is preferably 0.5 ⁇ m or more.
- the present invention also provides a laminate comprising waste thermoplastic elastomers, the laminate comprising:
- the layer has a grammage of 7-1000 gsm
- composition containing waste thermoplastic elastomer comprises:
- thermoplastic elastomer 0%-99% fresh thermoplastic elastomer
- thermoplastic elastomer is more than one selected from the following group: polyester elastomer, nylon elastomer, biologically derived nylon elastomer and biologically derived polyester elastomer;
- the viscosity regulator is a reactive viscosity regulator and/or Or non-reactive viscosity modifier, non-reactive viscosity modifier is selected from more than one of the following group of substances: paraffin wax, microcrystalline wax, polyethylene wax, oxidized polyethylene wax, polypropylene wax, sasol wax, overrun Polymers, APAO, ethylene bis stearic acid amide, EVA, urea, hydroxylamine hydrochloride, hydroxylamine sulfate and cyclohexanol; reactive viscosity modifiers are epoxy compounds, or low molecular weight polyfunctional groups containing hydroxyl or amino groups esters or alcohols or amine compounds;
- the slip agent is more than one selected from the following group: fatty acids and their esters,
- a glued layer is further included, and the glued layer It is formed by hot-melt glue, solvent glue or water-based glue, and its grammage is 3-80gsm.
- the film or sheet prepared by the present invention can be laminated with non-woven fabrics and textile fabrics respectively to obtain a laminate, and can also be directly coated or laminated with a hot melt adhesive layer; it can also be laminated with non-woven fabrics or textile fabrics.
- the hot melt adhesive layer is laminated on the film surface or the cloth surface; the latter two are preferably used for pre-coating glue, and then preferably used for water-stop strips at the seam position and composited with other laminates again, and finally realize the integrity of the entire product. It can be melted and fully recycled again; the hot melt adhesive layer can be continuous or discontinuous.
- the film or sheet used can be made entirely of waste thermoplastic elastomers (except for viscosity modifiers, slip agents and possible functional additives), without or with little fresh thermoplastic elastomers.
- the thickness of the film or sheet can be 5-1000 ⁇ m, preferably 5-50 ⁇ m for clothing, 10-500 ⁇ m for shoes, 50-1000 ⁇ m for bags, and 8-500 ⁇ m for adhesive strips.
- the laminate of the present invention can be a 3-layer composite structure (the glued layer is regarded as one layer, the same below), that is, one layer of textile fabric is glued to one layer of film or sheet, or it can be a 5-layer composite structure, that is, two Layers of textile fabrics laminated with a layer of recycled film and sheet through glue; it can also be a composite structure with more layers.
- the fabric structure of the selected textile fabric can be fabric material (bonded to fleece, tricot backers, knits (mesh and jersey, single and double knit), wovens (ripstop and plainweave, twill, single and double-weaves)), foam, air layer, non-woven fabric, cotton (multi-layer interface, natural cotton, Thinsulate, etc.;
- the material composition of the fabric is mainly PP, PE, PET, PLA, PBAT, PVA, nylon, polypropylene fiber , ultra-high density polyethylene, polyethylene, polypropylene, polyvinyl chloride, polystyrene, polymethyl methacrylate, polyester, polyoxymethylene, polyamide, polyphenylene ether, polyurethane, polysulfone, rubber, polyether Ether ketone (PEEK), PPS, polyimide (PI), polyetherimide (PAI) and other chemical fiber resins alone or in mixture, or recycled alone or in mixture, can also be natural fabrics.
- the material composition of the fabric is mainly PP
- the glue can be pre-coated on the film (sheet) or fabric in advance, and then the fabric and film (sheet) can be compounded by heating; it can also be compounded while applying glue; it can also be pasted by burning Method
- the surface of the fabric or film (sheet) is activated to have a glue effect and then pasted.
- the formulation of the laminate of the present invention can be adjusted according to the occasion, so that it has suitable washing performance, moisture permeability, softness and the like.
- Fig. 1 is a scanning electron microscope schematic diagram of a film structure without pores in strict physical meaning
- Fig. 2 is a scanning electron microscope schematic diagram of a nano-wire mesh interlaced structure formed by electrospinning
- Fig. 3 is the scanning electron microscope schematic diagram of the thin film structure that solution forms hole
- Fig. 4 is the scanning electron microscope schematic diagram of the thin film structure of physical stretching
- Fig. 5 is a scanning electron microscope schematic diagram of the structure formed by the direct laying non-woven method
- Fig. 6 is the scanning electron microscope schematic diagram of the film structure of regular physical mechanical pore forming method
- Fig. 7 is a curve diagram of elastic modulus test.
- test methods for moisture permeability, hydrostatic pressure, modulus of elasticity, elongation at break, etc. are as follows:
- incubator temperature 30 ⁇ 2°C
- water tank temperature in the incubator about 23°C
- balance inner diameter 56mm height 75mm moisture-permeable cup
- Auxiliary membrane PTFE membrane with a pore size of 80% and a thickness of 25um. The auxiliary membrane is used to seal the mouth of the moisture-permeable cup filled with moisture absorbent;
- Hygroscopic agent Add 100ml of deionized water to every 300g of potassium acetate and leave it for a day and night to form crystals;
- Sampling Cut according to the required test direction, the sample width is 15mm, and the length is 300mm (if the cut sample has obvious gaps or jagged shapes, it should be discarded and re-cut), and at least 5 samples should be prepared in each direction samples, and then place the cut samples at 23 ⁇ 1°C and 50 ⁇ 5% relative humidity for no less than 40 hours;
- the distance between the clamps is 250mm, and the tensile speed is 25mm/min, set the tensile machine and reset the force value;
- the distance between the clamps is 50mm, and the tensile speed is 500mm/min, set the tensile machine and reset the force value;
- the melt of the above formula can flow out through the gap at the front end of the die to form a film. After leaving the die, the melt passes through a short gap and reaches the surface of the casting roll at a low temperature to be rapidly cooled and shaped; the melt of the above formula can also be The melt is blown out through the high-pressure air of the rotating die to form a tubular film. After leaving the die, the melt passes through a short gap and reaches the low-temperature casting roll surface to be cooled and shaped rapidly; hole forming), the flat plastic hard sheet is heated and softened, then vacuum adsorbed on the surface of the mold, and formed after cooling;
- the above formula can also be plasticized to close to the viscous flow temperature through a series of horizontal rollers rotating in opposite directions, so that the material can be squeezed and stretched to become a thin sheet product with a certain thickness, width and smooth surface;
- the thick film or cast sheet is stretched longitudinally and transversely or uniaxially, and then properly cooled or heat-set in a tensioned state or Special processing (such as corona, coating, etc.);
- the above-mentioned formula diaphragm can be mechanically drilled, and the mechanical shaft drives the high-strength drill to drill holes on the material with the cutting force generated by the high rotation; laser drilling can also be used, using a high-power density laser beam Irradiate the material to be processed, so that the material is quickly heated to the vaporization temperature, and evaporate to form holes; it can also be chemically etched, which refers to removing the protective film of the area to be etched after exposure to plate making and development, and contacting the chemical solution during etching to achieve dissolution and corrosion The effect of forming concave-convex or hollow-out molding; it is also possible to design needles to pierce holes.
- This needle can be in the shape of a roll or a template.
- the needle can be hot or it can be cold; it can also be formed by roll forming, using a smooth surface or a certain shape of the rotating roll to roll the raw material to obtain a certain shape of the product; it can also be punched with ultrasonic waves, and the output signal is sent to the piezoelectric ceramics.
- the transducer converts ultrasonic electric energy into mechanical vibration energy, and the vibration head vibrates repeatedly under the cooperation of grinding powder (usually emery) and water, so that the processed part is worn through and a suitable small hole is punched.
- the film prepared by the patent formula according to the above-mentioned film preparation method is compounded with various fabric structures and fabric components of the above-mentioned claim 9, which can be two layers, or a sandwich three-layer structure, or a structure of more than three layers;
- the composite method can be liquid rubber roller coating or spraying, or hot melt adhesive melted and then rolled or sprayed, or hot melt adhesive mesh, grid, and film are compounded after being melted by rolling, and can be fired by burning Laminated by pasting, finally forming a laminate of patented products.
- Table 1 shows that the thinner the film thickness, the higher the moisture permeability; the thicker the film thickness, the higher the hydrostatic pressure, and the smaller the impact of the number of washings on the hydrostatic pressure.
- Embodiment 3 the influence of waste thermoplastic elastomer ratio
- Experiment Nos. 142-147 made by the applicant are formulas with waste thermoplastic elastomers accounting for 75%
- experiment Nos. 148-153 are formulas with waste thermoplastic elastomers accounting for 50%
- experiment Nos. 154-159 are waste thermoplastic elastomer proportions
- the formulas accounting for 25% and experiment numbers 160-164 are the formulas in which waste thermoplastic elastomers accounted for 10%. They were prepared by the process methods shown in Figure 2 to Figure 6 respectively, and the obtained products were also similar in performance to those in Table 5.
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- Polymers & Plastics (AREA)
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Abstract
Description
Claims (10)
- 一种由废旧热塑性弹性体制备的薄膜,该薄膜的厚度为3μm-1000μm,其中,所述的薄膜包括:0.5%-99.8%的废旧热塑性弹性体;0.01%-3%的粘度调节剂;0.01%-10%的防止所制成薄膜收卷时粘合的爽滑剂;以及0%-99%的新鲜热塑性弹性体;其中,所述的热塑性弹性体为选自于如下一组的一种以上:涤纶弹性体、尼龙弹性体、生物来源的尼龙弹性体和生物来源的涤纶弹性体;所述的粘度调节剂为反应型粘度调节剂和/或非反应型粘度调节剂,所述的非反应型粘度调节剂选自于如下一组物质的一种以上:石蜡、微晶蜡、聚乙烯蜡、氧化聚乙烯蜡、聚丙烯蜡、沙索蜡、超支化聚合物、APAO、亚乙基双硬脂酸酰胺、EVA、尿素、盐酸羟胺、硫酸羟胺和环己醇;所述的反应型粘度调节剂为环氧化合物、或者含羟基或氨基的低分子量的多官能团的酯类或醇类或胺类化合物;所述的爽滑剂为选自于如下一组的一种以上:脂肪酸及其酯类、脂肪酸酰胺、金属皂、烃类、有机硅化合物、硬脂酸、硬脂酸丁酯和乙撑双硬脂酰胺。
- 如权利要求1所述的薄膜,其中,所述的薄膜包括:2.5%-99.8%的废旧热塑性弹性体;0.01%-2%的粘度调节剂;0.01%-10%的不影响贴合的爽滑剂;以及0%-90%的新鲜热塑性弹性体。
- 如权利要求1所述的薄膜,其中,所述的废旧热塑性弹性体为边角料和/或头尾料。
- 如权利要求1所述的薄膜,其中,所述的反应型粘度调节剂为选自于如下一组的一种以上的醇类扩链剂:1,4一丁二醇(BDO)、1,6一己二醇、甘油、三羟甲基丙烷、二甘醇(DEG)、三甘醇、新戊二醇(NPG)、 山梨醇和二乙氨基乙醇(DEAE)。
- 如权利要求1所述的薄膜,其中,所述的反应型粘度调节剂为选自于如下一组的一种以上的胺类及酯类扩链剂:MOCA、用甲醛改性制得的液体MOCA、乙二胺(DA)、N,N-二羟基(二异丙基)苯胺(HPA)、氢醌-二(β一羟乙基)醚(HQEE)、双官能团酸衍生物、异氰酸酯、酸酐、环氧化物和缩水甘油酯及其多官能团衍生物。
- 如权利要求1所述的薄膜,其中,所述的反应型粘度调节剂为环氧化合物。
- 如权利要求1所述的薄膜,其中,所述的薄膜进一步包括0.1-45%的色粉。
- 如权利要求1-7之一所述的薄膜,其中,所述薄膜的用途为如下之一:(1)用于贴合服用面料,其中,所述的薄膜的厚度为5μm-50μm;(2)用于贴合鞋用面料,其中,所述的薄膜的厚度为10-500μm;(3)用于贴合手套、帽子用面料方面的用途,其中,所述的薄膜的厚度为8-80μm;(4)用于贴合箱包面料,其中,所述的薄膜的厚度为50-1000μm;(5)用于需要透湿功能的器械的面层贴合或者包装,其中,所述的薄膜的厚度为15-1000μm;(6)用于需要透湿功能的食品的面层贴合或者包装,其中,所述的薄膜的厚度为15-1000μm。
- 一种包含废旧热塑性弹性体的层合物,该层合物包括:至少一层由无纺布和/或纺织面料形成的层,该层的克重为7-1000gsm;以及至少一层由含废旧热塑性弹性体的组合物形成的层,该层的厚度为 5-1000μm;其中,所述的含废旧热塑性弹性体的组合物包括:0.5%-99.8%的废旧热塑性弹性体;0.01%-3%的粘度调节剂;0.01%-10%的防止所制成薄膜收卷时粘合的爽滑剂;以及0%-99%的新鲜热塑性弹性体;其中,所述的热塑性弹性体为选自于如下一组的一种以上:涤纶弹性体、尼龙弹性体、生物来源的尼龙弹性体和生物来源的涤纶弹性体;所述的粘度调节剂为反应型粘度调节剂和/或非反应型粘度调节剂,所述的非反应型粘度调节剂选自于如下一组物质的一种以上:石蜡、微晶蜡、聚乙烯蜡、氧化聚乙烯蜡、聚丙烯蜡、沙索蜡、超支化聚合物、APAO、亚乙基双硬脂酸酰胺、EVA、尿素、盐酸羟胺、硫酸羟胺和环己醇;所述的反应型粘度调节剂为环氧化合物、或者含羟基或氨基的低分子量的多官能团的酯类或醇类或胺类化合物;所述的爽滑剂为选自于如下一组的一种以上:脂肪酸及其酯类、脂肪酸酰胺、金属皂、烃类、有机硅化合物、硬脂酸、硬脂酸丁酯和乙撑双硬脂酰胺。
- 如权利要求9所述的层合物,其中,该层合物在所述由无纺布和/或纺织面料形成的层和所述由含废旧热塑性弹性体的组合物形成的层之间,进一步包括一胶合层,该胶合层是由热熔胶、溶剂胶或水性胶形成的,其克重为3-80gsm。
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