WO2023221229A1 - 一种低温易粘结的 tpu 热熔胶膜及其制备方法 - Google Patents

一种低温易粘结的 tpu 热熔胶膜及其制备方法 Download PDF

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WO2023221229A1
WO2023221229A1 PCT/CN2022/099953 CN2022099953W WO2023221229A1 WO 2023221229 A1 WO2023221229 A1 WO 2023221229A1 CN 2022099953 W CN2022099953 W CN 2022099953W WO 2023221229 A1 WO2023221229 A1 WO 2023221229A1
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parts
melt adhesive
adhesive film
hot melt
easy
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French (fr)
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宾家荃
宾家齐
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广东汇齐新材料有限公司
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/44—Polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/61—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/08—Macromolecular additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/35—Heat-activated
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2170/00—Compositions for adhesives
    • C08G2170/20—Compositions for hot melt adhesives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C

Definitions

  • the present invention relates to the field of TPU hot-melt adhesive film, and in particular to a TPU hot-melt adhesive film that is easy to bond at low temperature and a preparation method thereof.
  • Thermoplastic polyurethane is a linear or slightly branched polymer with excellent mechanical properties, wear resistance and resilience. TPU film has good softness and bending properties, waterproofness, hydrolysis resistance, transparency, comfort in contact with the human body and easy processing. It has high bonding strength and can fit well with a variety of materials.
  • TPU hot melt adhesive film has some shortcomings in processing and laminating, especially: 1.
  • the processing and laminating temperature is relatively high, generally 80-160°C, and the laminating material is prone to thermal or oxidative degradation; 2.
  • Low temperature The initial adhesion is poor, and it is difficult to laminate and rewind; 3. It is difficult to rework after lamination, which can easily cause material loss.
  • the present invention provides a TPU hot melt adhesive film that is easy to bond at low temperature and a preparation method thereof.
  • a TPU hot-melt adhesive film that is easy to bond at low temperature, including the following raw materials by weight: 70-95 parts of thermoplastic polyurethane solution; 45-60 parts of polyol; 13-20 parts of polyisocyanate; dihydroxyalkyl polydimethyl 15-20 parts of silicone; 12-15 parts of tackifier; 7-14 parts of functional additives; 2-4 parts of antioxidants.
  • thermoplastic polyurethane solution is 25%.
  • polyol is one or more of polycarbonate polyol, polybutadiene polyol, and polytetramethylene ether glycol.
  • a further improvement to the above technical solution is that the number average molecular weight of the polyol is 6000-8000.
  • polyisocyanate is one or more of 4,4'-diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate, and isophorone diisocyanate.
  • tackifier is any one of rosin resin, male rosin, terpene resin or a mixture of at least two of them.
  • a further improvement to the above technical solution is that the functional additive is an ultraviolet absorber.
  • a further improvement to the above technical solution is that the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution select 70-95 parts of thermoplastic polyurethane solution, 45-60 parts of polyol, 13-20 parts of polyisocyanate, 15-20 parts of dihydroxyalkyl polydimethylsiloxane, and 12 parts of tackifier -15 parts, 7-14 parts of functional additives, 2-4 parts of antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 125-145°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • a further improvement to the above technical solution is that the temperature of the extruder is controlled at 200-240°C.
  • the present invention can provide the initial viscosity of the TPU hot melt adhesive film and facilitate lamination and rolling. After being bonded to the material, it can be firmly bonded to the material through a period of low-temperature aging, which can avoid thermal or oxidative degradation of the bonded material.
  • the introduction of dihydroxyalkyl polydimethoxysiloxane can greatly improve the strength of the present invention. Low-temperature resistance; in addition, if problems arise immediately after lamination, it can be reworked to avoid material waste; by setting functional additives and antioxidants, the TPU hot melt adhesive film has good aging resistance and improves its service life.
  • thermoplastic polyurethane solution is 25%.
  • polyol is one or more of polycarbonate polyol, polybutadiene polyol, and polytetramethylene ether glycol.
  • the number average molecular weight of the polyol is 6000-8000.
  • polyisocyanate is one or more of 4,4'-diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate, and isophorone diisocyanate.
  • the tackifier is any one or a mixture of at least two of rosin resin, male rosin, and terpene resin.
  • the functional auxiliary agent is an ultraviolet absorber.
  • the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution select 70-95 parts of thermoplastic polyurethane solution, 45-60 parts of polyol, 13-20 parts of polyisocyanate, 15-20 parts of dihydroxyalkyl polydimethylsiloxane, and 12 parts of tackifier -15 parts, 7-14 parts of functional additives, 2-4 parts of antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 125-145°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • the temperature of the extruder is controlled at 200-240°C.
  • a TPU hot melt adhesive film that is easy to bond at low temperature, including the following raw materials by weight: 70 parts of thermoplastic polyurethane solution; 45 parts of polycarbonate polyol; 13 parts of 4,4'-diphenylmethane diisocyanate; dihydroxy 15 parts of alkyl polydimethylsiloxane; 12 parts of rosin resin; 7 parts of functional additives; 2 parts of antioxidants.
  • the functional additive is a UV absorber;
  • the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution 70 parts of thermoplastic polyurethane solution; 45 parts of polycarbonate polyol; 13 parts of 4,4'-diphenylmethane diisocyanate; 15 parts of dihydroxyalkyl polydimethylsiloxane; 12 parts of rosin resin; 7 parts of functional additives; 2 parts of antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 125°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue solution.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • the temperature of the extruder was controlled at 200°C.
  • a TPU hot melt adhesive film that is easy to bond at low temperature, including the following raw materials by weight: 75 parts of thermoplastic polyurethane solution; 50 parts of polycarbonate polyol; 15 parts of 1,5-naphthalene diisocyanate; dihydroxyalkyl polydicarbonate 15 parts of methylsiloxane; 13 parts of male rosin; 8 parts of functional additives; 3 parts of antioxidants.
  • the functional additive is a UV absorber;
  • the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution 75 parts of thermoplastic polyurethane solution; 50 parts of polycarbonate polyol; 15 parts of 1,5-naphthalene diisocyanate; 15 parts of dihydroxyalkyl polydimethylsiloxane; and 13 parts of maleic rosin. 8 parts of functional additives; 3 parts of antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 130°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue solution.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • the temperature of the extruder was controlled at 210°C.
  • a TPU hot-melt adhesive film that is easy to bond at low temperature, including the following raw materials by weight: 80 parts of thermoplastic polyurethane solution; 54 parts of polybutadiene polyol; 15 parts of 1,5-naphthalene diisocyanate; dihydroxyalkyl polyol 15 parts of dimethylsiloxane; 13 parts of male rosin; 8 parts of functional additives; 3 parts of antioxidants.
  • the functional additive is a UV absorber;
  • the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution 80 parts of thermoplastic polyurethane solution; 54 parts of polybutadiene polyol; 15 parts of 1,5-naphthalene diisocyanate; 15 parts of dihydroxyalkyl polydimethylsiloxane; and maleic rosin. 13 parts; 8 parts functional additives; 3 parts antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 135°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue solution.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • the temperature of the extruder was controlled at 220°C.
  • a TPU hot-melt adhesive film that is easy to bond at low temperature, including the following raw materials by weight: 90 parts of thermoplastic polyurethane solution; 60 parts of polytetramethylene ether glycol; 20 parts of isophorone diisocyanate; dihydroxyalkyl 15 parts of polydimethylsiloxane; 15 parts of terpene resin; 10 parts of functional additives; 3 parts of antioxidants.
  • the functional additive is a UV absorber;
  • the antioxidant is a mixture of 2,4-dimethyl-6-tert-butylphenol and 2,6-di-tert-butyl-p-cresol.
  • a method for preparing a TPU hot melt adhesive film that is easy to bond at low temperature including the following steps.
  • thermoplastic polyurethane solution 60 parts of polytetramethylene ether glycol; 20 parts of isophorone diisocyanate; 15 parts of dihydroxyalkyl polydimethylsiloxane; and terpenes. 15 parts of resin; 10 parts of functional additives; 3 parts of antioxidants.
  • step S2 Fully stir and mix the raw materials in step S1, heat to 140°C, and vacuum to remove bubbles so that the ingredients are in a molten state to form a hot melt glue solution.
  • step S3 Extrude the hot melt glue polymerized in step S2 through an extruder, form a film through casting and calendering, and perform shaping by cooling and pulling.
  • the temperature of the extruder was controlled at 230°C.
  • the TPU hot melt adhesive film materials of Examples 1-4 were tested for performance.
  • the test method was as follows: Use KJ-1065A mechanical testing machine, according to GB/T 2792-1998 standard tests the 180° peel strength of the adhesive film; the bonding strength test follows the GB/T2792-2014 standard; the yellowing resistance grade is tested with a 340W UV lamp for 24 hours.

Abstract

本发明涉及TPU热熔胶膜领域，特别是涉及一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液70-95份；多元醇45-60份；多异氰酸酯13-20份；二羟烷基聚二甲基硅氧烷15-20份；增粘剂12-15份；功能助剂7-14份；抗氧化剂2-4份。本发明提供一种低温易粘结的TPU热熔胶膜及其制备方法。

Description

一种低温易粘结的TPU热熔胶膜及其制备方法
相关申请的交叉引用。
本申请要求于2022年5月20日提交中国专利局，申请号为CN202210551736.2，发明名称为“一种低温易粘结的TPU热熔胶膜及其制备方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及TPU热熔胶膜领域，特别是涉及一种低温易粘结的TPU热熔胶膜及其制备方法。
 背景技术
热塑性聚氨酯（TPU）为线型或带少量支链的聚合物，它具有优良的机械性能、耐磨性及回弹性。TPU胶膜具有良好的柔软弯曲性、防水性、耐水解性、透明性、与人体接触的舒适性和易加工等性能，粘结强度高，能与多种材料进行很好的贴合。
 技术问题
目前，TPU热熔胶膜在加工、贴合等方面存在一些缺点，特别是：1、加工贴合温度较高，一般在80-160℃，贴合材料易发生热或氧化降解；2、低温下初粘性较差，贴合收卷较困难；3、贴合后较难返工，易造成材料损耗。
 技术解决方案
根据本申请的各种实施例，本发明提供一种低温易粘结的TPU热熔胶膜及其制备方法。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液70-95份；多元醇45-60份；多异氰酸酯13-20份；二羟烷基聚二甲基硅氧烷15-20份；增粘剂12-15份；功能助剂7-14份；抗氧化剂2-4份。
对上述技术方案的进一步改进为，所述热塑性聚氨酯溶液的固含量为25%。
对上述技术方案的进一步改进为，所述多元醇为聚碳酸酯多元醇、聚丁二烯多元醇、聚四亚甲基醚二醇中的一种或多种。
对上述技术方案的进一步改进为，所述多元醇的数均分子量为6000-8000。
对上述技术方案的进一步改进为，所述多异氰酸酯为4,4'-二苯基甲烷二异氰酸酯、1,5-萘二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种。
对上述技术方案的进一步改进为，所述增粘剂为松香树脂、马来松香、萜烯树脂中的任意一种或者至少两种的混合物。
对上述技术方案的进一步改进为，所述功能助剂为紫外线吸收剂。
对上述技术方案的进一步改进为，所述抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液70-95份、多元醇45-60份、多异氰酸酯13-20份、二羟烷基聚二甲基硅氧烷15-20份、增粘剂12-15份、功能助剂7-14份、抗氧化剂2-4份。
S2、将步骤S1的原料充分搅拌混合，加热至125-145℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
对上述技术方案的进一步改进为，所述挤出机的温度控制在200-240℃。
 有益效果
本发明通过加入多元醇、多异氰酸酯、增粘剂，可提供TPU热熔胶膜的初粘性，方便贴合收卷。与材料贴合后通过一段时间的低温熟化，可与材料牢固贴合，可避免贴合材料发生热或氧化降解；引入二羟烷基聚二甲氧基硅氧烷，可以大大提高本发明的耐低温性能；此外，在刚贴合后若出现问题，可重新返工，避免材料的浪费；通过设置功能助剂、抗氧化剂，提供TPU热熔胶膜良好的耐老化性能，提高了使用寿命。
 本发明的实施方式
下面，结合具体实施方式，对本发明做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。以下是本发明具体的实施例，在下述实施例中所采用的原材料、设备等除特殊限定外均可以通过购买方式获得。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液 70-95份；多元醇 45-60份；多异氰酸酯 13-20份；二羟烷基聚二甲基硅氧烷15-20份；增粘剂 12-15份；功能助剂 7-14份；抗氧化剂 2-4份。
进一步地，所述热塑性聚氨酯溶液的固含量为25%。
进一步地，所述多元醇为聚碳酸酯多元醇、聚丁二烯多元醇、聚四亚甲基醚二醇中的一种或多种。
进一步地，所述多元醇的数均分子量为6000-8000。
进一步地，所述多异氰酸酯为4,4'-二苯基甲烷二异氰酸酯、1,5-萘二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种。
进一步地，所述增粘剂为松香树脂、马来松香、萜烯树脂中的任意一种或者至少两种的混合物。
进一步地，所述功能助剂为紫外线吸收剂。
进一步地，所述抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液70-95份、多元醇45-60份、多异氰酸酯13-20份、二羟烷基聚二甲基硅氧烷15-20份、增粘剂12-15份、功能助剂7-14份、抗氧化剂2-4份。
S2、将步骤S1的原料充分搅拌混合，加热至125-145℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
进一步地，所述挤出机的温度控制在200-240℃。
实施例1。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液 70份；聚碳酸酯多元醇 45份；4,4'-二苯基甲烷二异氰酸酯13份；二羟烷基聚二甲基硅氧烷15份；松香树脂 12份；功能助剂 7份；抗氧化剂 2份。
其中，功能助剂为紫外线吸收剂；抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液 70份；聚碳酸酯多元醇 45份；4,4'-二苯基甲烷二异氰酸酯13份；二羟烷基聚二甲基硅氧烷15份；松香树脂 12份；功能助剂 7份；抗氧化剂 2份。
S2、将步骤S1的原料充分搅拌混合，加热至125℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
进一步地，所述挤出机的温度控制在200℃。
实施例2。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液 75份；聚碳酸酯多元醇 50份；1,5-萘二异氰酸酯15份；二羟烷基聚二甲基硅氧烷15份；马来松香13份；功能助剂 8份；抗氧化剂 3份。
其中，功能助剂为紫外线吸收剂；抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液 75份；聚碳酸酯多元醇 50份；1,5-萘二异氰酸酯15份；二羟烷基聚二甲基硅氧烷15份；马来松香13份；功能助剂 8份；抗氧化剂 3份。
S2、将步骤S1的原料充分搅拌混合，加热至130℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
进一步地，所述挤出机的温度控制在210℃。
实施例3。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液 80份；聚丁二烯多元醇54份；1,5-萘二异氰酸酯15份；二羟烷基聚二甲基硅氧烷15份；马来松香13份；功能助剂 8份；抗氧化剂 3份。
其中，功能助剂为紫外线吸收剂；抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液 80份；聚丁二烯多元醇54份；1,5-萘二异氰酸酯15份；二羟烷基聚二甲基硅氧烷15份；马来松香13份；功能助剂 8份；抗氧化剂 3份。
S2、将步骤S1的原料充分搅拌混合，加热至135℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
进一步地，所述挤出机的温度控制在220℃。
实施例4。
一种低温易粘结的TPU热熔胶膜，包括如下重量份的原料：热塑性聚氨酯溶液 90份；聚四亚甲基醚二醇60份；异佛尔酮二异氰酸酯20份；二羟烷基聚二甲基硅氧烷15份；萜烯树脂15份；功能助剂 10份；抗氧化剂 3份。
其中，功能助剂为紫外线吸收剂；抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
一种低温易粘结的TPU热熔胶膜的制备方法，包括如下步骤。
S1、按重量分数计，选取热塑性聚氨酯溶液 90份；聚四亚甲基醚二醇60份；异佛尔酮二异氰酸酯20份；二羟烷基聚二甲基硅氧烷15份；萜烯树脂15份；功能助剂 10份；抗氧化剂 3份。
S2、将步骤S1的原料充分搅拌混合，加热至140℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液。
S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形。
S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
进一步地，所述挤出机的温度控制在230℃。
将实施例1-4的TPU热熔胶膜材料进行性能测试，测试方法如下：使用KJ-1065A型力学试验机，按GB/T 2792-1998标准测试胶膜的180°剥离强度；粘接强度测试执行GB/T2792-2014标准；耐黄变等级测试340W紫外灯24小时。
具体结果如下。
。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种低温易粘结的TPU热熔胶膜，其特征在于，包括如下重量份的原料：热塑性聚氨酯溶液70-95份；多元醇45-60份；多异氰酸酯13-20份；二羟烷基聚二甲基硅氧烷15-20份；增粘剂12-15份；功能助剂7-14份；抗氧化剂2-4份。
  2. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述热塑性聚氨酯溶液的固含量为25%。
  3. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述多元醇为聚碳酸酯多元醇、聚丁二烯多元醇、聚四亚甲基醚二醇中的一种或多种。
  4. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述多元醇的数均分子量为6000-8000。
  5. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述多异氰酸酯为4,4'-二苯基甲烷二异氰酸酯、1,5-萘二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种。
  6. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述增粘剂为松香树脂、马来松香、萜烯树脂中的任意一种或者至少两种的混合物。
  7. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述功能助剂为紫外线吸收剂。
  8. 根据权利要求1所述的低温易粘结的TPU热熔胶膜，其特征在于，所述抗氧化剂为2,4-二甲基-6-叔丁基苯酚与2,6-二叔丁基对甲酚的混合物。
  9. 一种低温易粘结的TPU热熔胶膜的制备方法，其特征在于，包括如下步骤：
    S1、按重量分数计，选取热塑性聚氨酯溶液70-95份、多元醇45-60份、多异氰酸酯13-20份、二羟烷基聚二甲基硅氧烷15-20份、增粘剂12-15份、功能助剂7-14份、抗氧化剂2-4份；
    S2、将步骤S1的原料充分搅拌混合，加热至125-145℃，抽真空脱出气泡，使配料处于熔融状态，形成热熔胶液；
    S3、通过挤出机将步骤S2中聚合后的热熔胶液进行挤出，经流延、压延进行成膜，通过冷却、牵引进行整形；
    S4、通过收卷工序，即得低温易粘结的TPU热熔胶膜。
  10. 根据权利要求9所述的低温易粘结的TPU热熔胶膜的制备方法，其特征在于，所述挤出机的温度控制在200-240℃。
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