CN110423330A - 一体成型的鞋大底及其制备方法 - Google Patents

一体成型的鞋大底及其制备方法 Download PDF

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Publication number
CN110423330A
CN110423330A CN201910695079.7A CN201910695079A CN110423330A CN 110423330 A CN110423330 A CN 110423330A CN 201910695079 A CN201910695079 A CN 201910695079A CN 110423330 A CN110423330 A CN 110423330A
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China
Prior art keywords
component
wear
polyurethane
shoes outsole
bottom material
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CN201910695079.7A
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English (en)
Inventor
冯建龙
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Guangdong Kangcheng New Material Science And Technology Co Ltd
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Guangdong Kangcheng New Material Science And Technology Co Ltd
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Priority to CN201910695079.7A priority Critical patent/CN110423330A/zh
Publication of CN110423330A publication Critical patent/CN110423330A/zh
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/02Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12Soles with several layers of different materials
    • A43B13/122Soles with several layers of different materials characterised by the outsole or external layer
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/02Soles; Sole-and-heel integral units characterised by the material
    • A43B13/12Soles with several layers of different materials
    • A43B13/125Soles with several layers of different materials characterised by the midsole or middle layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/021Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles by casting in several steps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • C08G18/08Processes
    • C08G18/10Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • CCHEMISTRY; METALLURGY
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08G18/4252Polycondensates having carboxylic or carbonic ester groups in the main chain containing oxygen in the form of ether groups derived from polyols containing at least one ether group and polycarboxylic acids derived from polyols containing polyether groups and polycarboxylic acids
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    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • C08G18/40High-molecular-weight compounds
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    • C08G18/4833Polyethers containing oxyethylene units
    • C08G18/4837Polyethers containing oxyethylene units and other oxyalkylene units
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/73Polyisocyanates or polyisothiocyanates acyclic
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    • C08G18/74Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/751Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring
    • C08G18/752Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing only one cycloaliphatic ring containing at least one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group
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    • C08G18/7671Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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Abstract

本发明涉及鞋大底制备技术领域,具体涉及一体成型的鞋大底及其制备方法,包括如下步骤:(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于已预热好的模具中,真空除泡,加压成型,制得鞋大底的耐磨底;(2)灌注成型:将模具预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底。本发明的制备方法将中底与耐磨底采用灌注成型或热压成型的一体成型方式替代现有技术,工艺时间缩短,人工成本降低,且无需使用胶水,更环保。

Description

一体成型的鞋大底及其制备方法
技术领域
本发明涉及鞋大底制备技术领域,具体涉及一体成型的鞋大底及其制备方法。
背景技术
传统制备的鞋子是在PU中底的下表面通过胶水粘合橡胶耐磨底形成鞋大底,橡胶耐磨底需先进行打磨、刷胶后才能实现与PU中底的贴合,胶水材料不环保,且橡胶耐磨底人工打磨生产时间长,人工成本高。
发明内容
为了克服现有技术中存在的缺点和不足,本发明的目的在于提供一种一体成型的鞋大底的制备方法,该制备方法将中底与耐磨底一体成型,不需要打磨与涮胶,采用灌注成型或热压成型的一体成型方式替代现有技术,工艺时间缩短,人工成本降低,且无需使用胶水,更环保。
本发明的另一目的在于提供一种一体成型的鞋大底,该鞋大底的邵氏硬度可以达到60-65A,耐磨性好,安全环保。
本发明的目的通过下述技术方案实现:一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于85-95℃已预热好的模具中,真空除泡,85-95℃加热2-6min后加压成型,85-95℃继续烘烤6-10min,脱模后室温放置或75-85℃烘烤10-12h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于80-100℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入60-70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,80-100℃继续烘烤15-20min,脱模后室温放置或75-85℃烘烤10-12h,制得所述鞋大底。
优选的,所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为350-450mPa.s,在50℃时的粘度为175-225mPa.s,所述组分P1在25℃时的粘度为1300-1500mPa.s,在50℃时的粘度为500-700mPa.s。本发明通过严格控制组分I1和组分P1的粘度,制得的耐磨底硬度高,耐磨性能好。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇40-80份、多异氰酸酯10-30份和增塑剂1-10份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇20-40份、填充剂20-40份、扩链剂1-10份、发泡剂5-15份、匀泡剂1-5份和其它助剂1-10份。
所述聚酯多元醇为聚乙二醇二乙二醇丁二酸酯多元醇、聚乙二醇二乙二醇苯酐己二酸酯多元醇、聚葵二酸-2-乙基-1,3-己二醇酯多元醇、聚乙二醇-1,4丁二醇己二酸酯多元醇、聚己二酸乙二醇二乙二醇三甲基戊二醇三羟甲基丙烷酯多元醇、聚环己烷二甲酸己二酸乙二醇二乙二醇1,3-丁二醇多元醇和聚二聚酸乙二醇1,4-丁二醇1,3-丁二醇三甲基戊二醇酯多元醇中的至少一种。本发明通过采用上述聚酯多元醇,制得的聚氨酯耐磨底材料既有橡胶的弹性,又有塑料的强度和优异的加工性能,还具有优异的耐磨性和弹性。
所述多异氰酸酯为4,4'-二苯基甲烷二异氰酸酯、2,4'-二苯基甲烷二异氰酸酯、碳化二胺-脲酮亚胺改性的4,4'-二苯基甲烷二异氰酸酯、萘-1,5二异氰酸酯、多苯基多次甲基多异氰酸酯、1,6-己二异氰酸酯和异佛尔酮二异氰酸酯中的至少一种。本发明通过采用上述多异氰酸酯,制得的聚氨酯耐磨底材料具有较高的机械强度、柔曲性和回弹性。
所述增塑剂为柠檬酸三丁酯、柠檬酸三辛酯、环氧大豆油、环氧乙酰亚麻油酸甲酯、环氧糠油酸丁酯、环氧蚕蛹油酸丁酯、环氧大豆油酸辛酯、9,10-环氧硬脂酸辛酯、氯代棕榈油甲酯和合成植物酯中的至少一种。本发明通过采用上述增塑剂,可以增加聚氨酯的可塑性,使其柔韧性增强,容易加工。
所述填充剂为碳酸钙、滑石粉、硅微粉、高岭土、石英粉、钛白粉、硫酸钡、陶土和二氧化硅中的至少一种。本发明通过采用上述填充剂,可以提高聚氨酯耐磨底材料的硬度和机械强度。
所述扩链剂为乙二醇、丙二醇、1,3-丁二醇、1,4-丁二醇、2-甲基-1,3-丙二醇、己二醇、3-甲基-1,5-戊二醇、1,4-环己烷二甲醇、对苯二酚双(2-羟乙基)醚、4-羟乙基氧乙基-1-羟乙基苯二醚、间苯二酚-双(β-羟乙基)醚和3-羟乙基氧乙基-1-羟乙基苯二醚中的至少一种。本发明通过采用扩链剂,可以提高聚氨酯耐磨底材料的力学性能和加工性能。
所述发泡剂为碳酸氢钠、碳酸铵、亚硝酸铵、叠氮化钙、硼氢化钠、过氧化氢、偶氮双甲酰胺、4,4'-氧代双苯磺酰肼、N,N-二亚硝基五亚甲基四胺、2,2'-偶氮二异丁腈和偶氮二甲酸二异丙酯中的至少一种。本发明通过采用上述发泡剂,其发泡效果好。
所述匀泡剂为二甲基硅氧烷、α-氢-ω-羟基-聚二甲基硅氧烷、双氨基硅油、1,3-双氨丙基-1,1,3,3-四甲基二硅氧烷、端羟基聚二甲基硅氧烷和三元共聚氨基硅油中的至少一种。本发明通过采用匀泡剂,可以提高发泡稳定性。
所述其它助剂为交联剂、偶联剂、分散剂、流平剂、抗黄变剂、抗氧剂、紫外线吸收剂中的至少一种。本发明通过采用交联剂和偶联剂,可以提高聚氨酯聚合速度;通过采用分散剂和流平剂,可以提高反应稳定性;通过采用抗黄变剂、抗氧剂和紫外线吸收剂,可以提高材料的抗黄变、抗氧化和抗紫外线性能。
本发明采用的交联剂、偶联剂、分散剂、流平剂、抗黄变剂、抗氧剂、紫外线吸收剂均为本领域常规助剂,在此不再赘述。
优选的,所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于30-40℃混合均匀,将组分P1'于45-55℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比45-55:100混合均匀。本发明通过严格控制组分I1和组分P1'的混合温度和混合比例,制得的耐磨底硬度高,耐磨性能好。
优选的,所述组分P1、催化剂和消泡剂的重量比为45-55:0.30-0.70:0.06-0.10。本发明通过严格控制组分P1、催化剂和消泡剂的重量比,制得的耐磨底硬度高,耐磨性能好。
所述催化剂为三乙胺、三乙烯二胺、五甲基二乙烯三胺、N,N-二甲基苄胺、N,N-二甲基环己胺、N,N,N',N'-四甲基亚烷基二胺、双(2-二甲氨基乙基)醚、N-乙基吗啉、N-甲基吗啉、辛酸亚锡、二月桂酸二丁基锡和N,N'-二乙基哌嗪中的至少一种。本发明通过采用上述催化剂,可以加速聚氨酯反应的进行。
所述消泡剂为乳化硅油、高碳醇脂肪酸酯复合物、聚氧乙烯聚氧丙烯季戊四醇醚、聚氧乙烯聚氧丙醇胺醚、聚氧丙烯甘油醚和聚氧丙烯聚氧乙烯甘油醚中的至少一种。本发明通过采用上述消泡剂,具有消泡速度快、抑泡时间长、效果好、扩散性、渗透性好、热稳定性好等特点。
优选的,所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比55-65:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇40-80份和多异氰酸酯10-30份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇20-40份、填充剂20-40份、扩链剂1-10份、催化剂0.1-1.0份、发泡剂5-15份、匀泡剂1-5份和其它助剂1-10份。
所述聚醚多元醇为聚氧化丙烯二醇、聚四氢呋喃二醇、四氢呋喃-氧化丙烯共聚二醇和环氧乙烷环氧丙烷共聚醚中的至少一种。本发明通过采用上述聚醚多元醇,制得的聚氨酯中底材料低温柔顺性能好,耐水解性能优良,虽然机械性能不如聚酯型聚氨酯,但原料体系粘度低,易与异氰酸酯、助剂等组份互溶,加工性能优良。
所述其它助剂为交联剂、偶联剂、分散剂、消泡剂、流平剂、抗黄变剂、抗氧剂、紫外线吸收剂中的至少一种。本发明通过采用交联剂和偶联剂,可以提高聚氨酯聚合速度;通过采用分散剂、消泡剂和流平剂,可以提高反应稳定性;通过采用抗黄变剂、抗氧剂和紫外线吸收剂,可以提高材料的抗黄变、抗氧化和抗紫外线性能。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
优选的,所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在80-90℃预热至固体完全熔为液体后于45-55℃搅拌均匀;b、将组分I2于30-40℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比55-65:100混合均匀。本发明通过严格控制组分I2和组分P2的混合温度和混合比例,制得的中底弹性好,柔韧性好,质量轻。
优选的,所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为25-35:60:85-95。本发明通过严格控制第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比,制得的中底弹性好,柔韧性好,质量轻。
优选的,所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。本发明制得的鞋大底的透明度为透明至半透明。
本发明的另一种较佳的实施方式为:一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于80-100℃已预热好的模具中,然后加入60-70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,80-100℃继续烘烤15-20min,脱模后室温放置或75-85℃烘烤10-12h,制得鞋大底的中底;
(2)制备耐磨底:将EVA耐磨底材料于90-110℃混炼5-25min,然后在80-120℃进行开炼10-30min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为140-180℃,发泡时间为1-10min,然后将模具冷却至10-50℃,制得鞋大底的耐磨底;
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为50-300千克力,成型温度为100-200℃,成型时间为10-14min,脱模后,制得所述鞋大底。
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂40-80份、乙烯-辛烯共聚物弹性体15-25份、三元乙丙橡胶10-20份、填充剂5-15份、改性碳纤维4-8份、发泡剂2-4份、发泡促进剂1.2-1.8份、交联剂0.4-0.8份、耐寒剂8-12份、分散剂0.6-1.0份、抗氧剂0.1-0.5份和润滑剂1.2-1.6份。
本发明的EVA耐磨底材料通过采用上述原料,并严格控制各原料的重量配比,制得的EVA耐磨底材料具有较高的硬度,耐磨性好,且轻便、有弹性、柔韧好、不易皱。
所述EVA树脂是由醋酸乙烯含量为15-25%的EVA树脂和醋酸乙烯含量为30-50%的EVA树脂以重量比2-4:1组成的混合物。本发明通过严格控制EVA树脂的醋酸乙烯含量、种类、复配及配比,制得的EVA耐磨底材料具有良好的柔软性,弹性,抗老化和耐臭氧强度好。
所述填充剂为碳酸钙、滑石粉、硅微粉、高岭土、石英粉、钛白粉、硫酸钡、陶土和二氧化硅中的至少一种。本发明通过采用上述填充剂,可以提高EVA耐磨底材料的强度和硬度。
所述发泡剂为碳酸氢钠、柠檬酸钠、碳酸氢铵、可膨胀微球、偶氮二甲酰胺、偶氮二异丁腈、偶氮二甲酸钡、对甲苯磺酰肼和4,4’-氧代双苯磺酰肼中的至少一种。本发明通过采用上述发泡剂,发泡效果好。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比1.5-2.5:1组成的混合物。本发明通过严格控制发泡促进剂的种类、复配及配比,可以促进发泡,增大发泡倍率,降低产品比重,提高产品质量,可明显改善产品比重及弹性。
所述交联剂为过氧化二异丙苯、双叔丁基过氧化二异丙基苯、1,1-双(叔丁基过氧)-3,3,5-三甲基环已烷和4,4-二(叔丁基过氧化)戊酸正丁酯中的至少一种。本发明通过采用上述交联剂,可以促进EVA树脂固化。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比2-4:1组成的混合物。本发明通过严格控制耐寒剂的种类、复配及配比,可以提高鞋底的耐寒性能。
本发明采用的分散剂、抗氧剂和润滑剂均为本领域常规助剂,在此不再赘述。本发明通过采用分散剂、抗氧剂和润滑剂可以提高材料分散性能、抗氧化性能和加工性能。
本发明的另一目的通过下述技术方案实现:一体成型的鞋大底,所述鞋大底根据上述所述的制备方法制得。
本发明的有益效果在于:本发明的制备方法将中底与耐磨底一体成型,不需要打磨与涮胶,采用灌注成型或热压成型的一体成型方式替代现有技术,工艺时间缩短,人工成本降低,且无需使用胶水,更环保。
本发明的鞋大底的邵氏硬度可以达到60-65A,耐磨性好,安全环保。
具体实施方式
为了便于本领域技术人员的理解,下面结合实施例对本发明作进一步的说明,实施方式提及的内容并非对本发明的限定。
实施例1
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于85℃已预热好的模具中,真空除泡,85℃加热6min后加压成型,85℃继续烘烤10min,脱模后室温放置或75℃烘烤12h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于80℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入60℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,80℃继续烘烤20min,脱模后室温放置或75℃烘烤12h,制得所述鞋大底。
所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为350mPa.s,在50℃时的粘度为175mPa.s,所述组分P1在25℃时的粘度为1300mPa.s,在50℃时的粘度为500mPa.s。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇40份、多异氰酸酯10份和增塑剂1份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇20份、填充剂20份、扩链剂1份、发泡剂5份、匀泡剂1份和其它助剂1份。
所述聚酯多元醇为聚乙二醇二乙二醇丁二酸酯多元醇或聚乙二醇二乙二醇苯酐己二酸酯多元醇。
所述多异氰酸酯为4,4'-二苯基甲烷二异氰酸酯或2,4'-二苯基甲烷二异氰酸酯。
所述增塑剂为柠檬酸三丁酯或柠檬酸三辛酯。
所述填充剂为碳酸钙或滑石粉。
所述扩链剂为乙二醇、丙二醇、1,3-丁二醇或1,4-丁二醇。
所述发泡剂为碳酸氢钠、碳酸铵或亚硝酸铵。
所述匀泡剂为二甲基硅氧烷。
所述其它助剂是由交联剂、分散剂和抗黄变剂以重量比1:1:1组成的混合物。
所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于30℃混合均匀,将组分P1'于45℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比45:100混合均匀。
所述催化剂为三乙胺、三乙烯二胺或五甲基二乙烯三胺。
所述消泡剂为乳化硅油。
所述组分P1、催化剂和消泡剂的重量比为45:0.30:0.06。
所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比55:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇40份和多异氰酸酯10份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇20份、填充剂20份、扩链剂1份、催化剂0.1份、发泡剂5份、匀泡剂1份和其它助剂1份。
所述聚醚多元醇为聚氧化丙烯二醇。
所述其它助剂是由交联剂、分散剂和抗黄变剂以重量比1:1:1组成的混合物。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在80℃预热至固体完全熔为液体后于45℃搅拌均匀;b、将组分I2于30℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比55:100混合均匀。
所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为25:60:85。
所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
实施例2
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于88℃已预热好的模具中,真空除泡,88℃加热5min后加压成型,88℃继续烘烤9min,脱模后室温放置或78℃烘烤11.5h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于85℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入62℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,85℃继续烘烤19min,脱模后室温放置或78℃烘烤11.5h,制得所述鞋大底。
所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为380mPa.s,在50℃时的粘度为190mPa.s,所述组分P1在25℃时的粘度为1350mPa.s,在50℃时的粘度为550mPa.s。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇50份、多异氰酸酯15份和增塑剂3份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇25份、填充剂25份、扩链剂3份、发泡剂8份、匀泡剂2份和其它助剂3份。
所述聚酯多元醇为聚葵二酸-2-乙基-1,3-己二醇酯多元醇或聚乙二醇-1,4丁二醇己二酸酯多元醇。
所述多异氰酸酯为碳化二胺-脲酮亚胺改性的4,4'-二苯基甲烷二异氰酸酯。
所述增塑剂为环氧大豆油、环氧乙酰亚麻油酸甲酯或环氧糠油酸丁酯。
所述填充剂为硅微粉或高岭土。
所述扩链剂为2-甲基-1,3-丙二醇、己二醇或3-甲基-1,5-戊二醇。
所述发泡剂为叠氮化钙、硼氢化钠或过氧化氢。
所述匀泡剂为α-氢-ω-羟基-聚二甲基硅氧烷。
所述其它助剂是由偶联剂、流平剂和抗氧剂以重量比1:1:1组成的混合物。
所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于32℃混合均匀,将组分P1'于48℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比48:100混合均匀。
所述催化剂为N,N-二甲基苄胺或N,N-二甲基环己胺。
所述消泡剂为高碳醇脂肪酸酯复合物。
所述组分P1、催化剂和消泡剂的重量比为48:0.40:0.07。
所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比58:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇50份和多异氰酸酯15份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇25份、填充剂25份、扩链剂3份、催化剂0.3份、发泡剂8份、匀泡剂2份和其它助剂3份。
所述聚醚多元醇为聚四氢呋喃二醇。
所述其它助剂是由偶联剂、消泡剂和抗氧剂以重量比1:1:1组成的混合物。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在82℃预热至固体完全熔为液体后于48℃搅拌均匀;b、将组分I2于32℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比58:100混合均匀。
所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为28:60:88。
所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
实施例3
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于90℃已预热好的模具中,真空除泡,90℃加热4min后加压成型,90℃继续烘烤8min,脱模后室温放置或80℃烘烤11h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于90℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入65℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,90℃继续烘烤18min,脱模后室温放置或80℃烘烤11h,制得所述鞋大底。
所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为400mPa.s,在50℃时的粘度为200mPa.s,所述组分P1在25℃时的粘度为1400mPa.s,在50℃时的粘度为600mPa.s。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇60份、多异氰酸酯20份和增塑剂5份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇30份、填充剂30份、扩链剂5份、发泡剂10份、匀泡剂3份和其它助剂5份。
所述聚酯多元醇为聚己二酸乙二醇二乙二醇三甲基戊二醇三羟甲基丙烷酯多元醇。
所述多异氰酸酯为萘-1,5二异氰酸酯。
所述增塑剂为环氧蚕蛹油酸丁酯或环氧大豆油酸辛酯。
所述填充剂为石英粉或钛白粉。
所述扩链剂为1,4-环己烷二甲醇或对苯二酚双(2-羟乙基)醚。
所述发泡剂为偶氮双甲酰胺或4,4'-氧代双苯磺酰肼。
所述匀泡剂为双氨基硅油。
所述其它助剂是由交联剂、流平剂和紫外线吸收剂以重量比1:1:1组成的混合物。
所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于35℃混合均匀,将组分P1'于50℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比51.5:100混合均匀。
所述催化剂为N,N,N',N'-四甲基亚烷基二胺或双(2-二甲氨基乙基)醚。
所述消泡剂为聚氧乙烯聚氧丙烯季戊四醇醚。
所述组分P1、催化剂和消泡剂的重量比为51.5:0.50:0.08。
所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比60:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇60份和多异氰酸酯20份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇30份、填充剂30份、扩链剂5份、催化剂0.5份、发泡剂10份、匀泡剂3份和其它助剂5份。
所述聚醚多元醇为四氢呋喃-氧化丙烯共聚二醇。
所述其它助剂是由交联剂、流平剂和紫外线吸收剂以重量比1:1:1组成的混合物。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在85℃预热至固体完全熔为液体后于50℃搅拌均匀;b、将组分I2于35℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比60:100混合均匀。
所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为30:60:90。
所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
实施例4
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于92℃已预热好的模具中,真空除泡,92℃加热3min后加压成型,92℃继续烘烤7min,脱模后室温放置或82℃烘烤10.5h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于95℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入68℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,95℃继续烘烤16min,脱模后室温放置或82℃烘烤10.5h,制得所述鞋大底。
所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为420mPa.s,在50℃时的粘度为210mPa.s,所述组分P1在25℃时的粘度为1450mPa.s,在50℃时的粘度为650mPa.s。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇70份、多异氰酸酯25份和增塑剂8份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇35份、填充剂35份、扩链剂8份、发泡剂12份、匀泡剂4份和其它助剂8份。
所述聚酯多元醇为聚环己烷二甲酸己二酸乙二醇二乙二醇1,3-丁二醇多元醇。
所述多异氰酸酯为1,6-己二异氰酸酯。
所述增塑剂为环氧大豆油酸辛酯或9,10-环氧硬脂酸辛酯。
所述填充剂为硫酸钡。
所述扩链剂为4-羟乙基氧乙基-1-羟乙基苯二醚或间苯二酚-双(β-羟乙基)醚。
所述发泡剂为4,4'-氧代双苯磺酰肼或N,N-二亚硝基五亚甲基四胺。
所述匀泡剂为1,3-双氨丙基-1,1,3,3-四甲基二硅氧烷。
所述其它助剂是由交联剂、分散剂、流平剂和抗黄变剂以重量比1:1:1:1组成的混合物。
所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于38℃混合均匀,将组分P1'于52℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比53:100混合均匀。
所述催化剂为N-乙基吗啉或N-甲基吗啉。
所述消泡剂为聚氧乙烯聚氧丙醇胺醚。
所述组分P1、催化剂和消泡剂的重量比为53:0.60:0.09。
所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比62:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇70份和多异氰酸酯25份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇35份、填充剂35份、扩链剂8份、催化剂0.8份、发泡剂12份、匀泡剂4份和其它助剂8份。
所述聚醚多元醇为环氧乙烷环氧丙烷共聚醚。
所述其它助剂是由交联剂、分散剂、流平剂和抗黄变剂以重量比1:1:1:1组成的混合物。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在88℃预热至固体完全熔为液体后于52℃搅拌均匀;b、将组分I2于38℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比62:100混合均匀。
所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为32:60:92。
所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
实施例5
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于95℃已预热好的模具中,真空除泡,95℃加热2min后加压成型,95℃继续烘烤6min,脱模后室温放置或85℃烘烤10h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于100℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,100℃继续烘烤15min,脱模后室温放置或85℃烘烤10h,制得所述鞋大底。
所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成,所述组分I1在25℃时的粘度为450mPa.s,在50℃时的粘度为225mPa.s,所述组分P1在25℃时的粘度为1500mPa.s,在50℃时的粘度为700mPa.s。
所述组分I1为聚氨酯预聚体组分,包括如下重量份的原料:聚酯多元醇80份、多异氰酸酯30份和增塑剂10份。
所述组分P1为多元醇组分,包括如下重量份的原料:聚酯多元醇40份、填充剂40份、扩链剂10份、发泡剂15份、匀泡剂5份和其它助剂10份。
所述聚酯多元醇为聚二聚酸乙二醇1,4-丁二醇1,3-丁二醇三甲基戊二醇酯多元醇。
所述多异氰酸酯为1,6-己二异氰酸酯或异佛尔酮二异氰酸酯。
所述增塑剂为氯代棕榈油甲酯或合成植物酯。
所述填充剂为二氧化硅。
所述扩链剂为间苯二酚-双(β-羟乙基)醚或3-羟乙基氧乙基-1-羟乙基苯二醚。
所述发泡剂为2,2'-偶氮二异丁腈或偶氮二甲酸二异丙酯。
所述匀泡剂为端羟基聚二甲基硅氧烷或三元共聚氨基硅油。
所述其它助剂是由偶联剂、分散剂、抗黄变剂、抗氧剂和紫外线吸收剂以重量比1:1:1:1:1组成的混合物。
所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于40℃混合均匀,将组分P1'于55℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比55:100混合均匀。
所述催化剂为辛酸亚锡、二月桂酸二丁基锡或N,N'-二乙基哌嗪。
所述消泡剂为聚氧丙烯甘油醚或聚氧丙烯聚氧乙烯甘油醚。
所述组分P1、催化剂和消泡剂的重量比为55:0.70:0.10。
所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比65:100组成。
所述组分I2为聚氨酯预聚体组分,包括如下重量份的原料:聚醚多元醇80份和多异氰酸酯30份。
所述组分P2为多元醇组分,包括如下重量份的原料:聚醚多元醇40份、填充剂40份、扩链剂10份、催化剂1.0份、发泡剂15份、匀泡剂5份和其它助剂10份。
所述聚醚多元醇为环氧乙烷环氧丙烷共聚醚。
所述其它助剂是由偶联剂、分散剂、抗黄变剂、抗氧剂和紫外线吸收剂以重量比1:1:1:1:1组成的混合物。
所述多异氰酸酯、填充剂、扩链剂、催化剂、发泡剂和匀泡剂与聚氨酯耐磨底材料一致,在此不再赘述。
所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在90℃预热至固体完全熔为液体后于55℃搅拌均匀;b、将组分I2于40℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比65:100混合均匀。
所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为35:60:95。
所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
实施例6
一体成型的鞋大底,所述鞋大底根据实施例1-5所述的制备方法制得。本发明制得的鞋大底的邵氏硬度可以达到60-65A,耐磨性好,安全环保。
实施例7
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于80℃已预热好的模具中,然后加入60℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,80℃继续烘烤20min,脱模后室温放置或75℃烘烤12h,制得鞋大底的中底;
该实施例采用的中底的制备原料与实施例1中中底的制备原料一致,在此不再赘述。
(2)制备耐磨底:将EVA耐磨底材料于90℃混炼25min,然后在80℃进行开炼30min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为140℃,发泡时间为10min,然后将模具冷却至10℃,制得鞋大底的耐磨底;
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂40份、乙烯-辛烯共聚物弹性体15份、三元乙丙橡胶10份、填充剂5份、改性碳纤维4份、发泡剂2份、发泡促进剂1.2份、交联剂0.4份、耐寒剂8份、分散剂0.6份、抗氧剂0.1份和润滑剂1.2份。
所述EVA树脂是由醋酸乙烯含量为15%的EVA树脂和醋酸乙烯含量为30%的EVA树脂以重量比2:1组成的混合物。
所述填充剂为碳酸钙或滑石粉。
所述发泡剂为碳酸氢钠、柠檬酸钠或碳酸氢铵。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比1.5:1组成的混合物。
所述交联剂为过氧化二异丙苯。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比2:1组成的混合物。
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为50千克力,成型温度为100℃,成型时间为10min,脱模后,制得所述鞋大底。
实施例8
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于85℃已预热好的模具中,然后加入62℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,85℃继续烘烤19min,脱模后室温放置或78℃烘烤11.5h,制得鞋大底的中底;
该实施例采用的中底的制备原料与实施例2中中底的制备原料一致,在此不再赘述。
(2)制备耐磨底:将EVA耐磨底材料于95℃混炼20min,然后在90℃进行开炼25min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为150℃,发泡时间为8min,然后将模具冷却至20℃,制得鞋大底的耐磨底;
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂50份、乙烯-辛烯共聚物弹性体18份、三元乙丙橡胶12份、填充剂8份、改性碳纤维5份、发泡剂2.5份、发泡促进剂1.4份、交联剂0.6份、耐寒剂9份、分散剂0.7份、抗氧剂0.2份和润滑剂1.3份。
所述EVA树脂是由醋酸乙烯含量为18%的EVA树脂和醋酸乙烯含量为35%的EVA树脂以重量比2.5:1组成的混合物。
所述填充剂为硅微粉或高岭土。
所述发泡剂为可膨胀微球或偶氮二甲酰胺。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比1.8:1组成的混合物。
所述交联剂为双叔丁基过氧化二异丙基苯。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比2.5:1组成的混合物。
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为100千克力,成型温度为120℃,成型时间为13min,脱模后,制得所述鞋大底。
实施例9
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于90℃已预热好的模具中,然后加入65℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,90℃继续烘烤18min,脱模后室温放置或80℃烘烤11h,制得鞋大底的中底;
该实施例采用的中底的制备原料与实施例3中中底的制备原料一致,在此不再赘述。
(2)制备耐磨底:将EVA耐磨底材料于100℃混炼15min,然后在100℃进行开炼20min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为160℃,发泡时间为5min,然后将模具冷却至30℃,制得鞋大底的耐磨底;
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂60份、乙烯-辛烯共聚物弹性体20份、三元乙丙橡胶15份、填充剂10份、改性碳纤维6份、发泡剂3份、发泡促进剂1.5份、交联剂0.6份、耐寒剂10份、分散剂0.8份、抗氧剂0.3份和润滑剂1.4份。
所述EVA树脂是由醋酸乙烯含量为20%的EVA树脂和醋酸乙烯含量为40%的EVA树脂以重量比3:1组成的混合物。
所述填充剂为石英粉或钛白粉。
所述发泡剂为偶氮二甲酰胺或偶氮二异丁腈。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比2:1组成的混合物。
所述交联剂为1,1-双(叔丁基过氧)-3,3,5-三甲基环已烷。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比3:1组成的混合物。
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为150千克力,成型温度为150℃,成型时间为12min,脱模后,制得所述鞋大底。
实施例10
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于95℃已预热好的模具中,然后加入68℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,95℃继续烘烤16min,脱模后室温放置或82℃烘烤10.5h,制得鞋大底的中底;
该实施例采用的中底的制备原料与实施例4中中底的制备原料一致,在此不再赘述。
(2)制备耐磨底:将EVA耐磨底材料于105℃混炼10min,然后在110℃进行开炼15min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为170℃,发泡时间为3min,然后将模具冷却至40℃,制得鞋大底的耐磨底;
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂70份、乙烯-辛烯共聚物弹性体22份、三元乙丙橡胶18份、填充剂12份、改性碳纤维7份、发泡剂3.5份、发泡促进剂1.6份、交联剂0.7份、耐寒剂11份、分散剂0.9份、抗氧剂0.4份和润滑剂1.5份。
所述EVA树脂是由醋酸乙烯含量为22%的EVA树脂和醋酸乙烯含量为45%的EVA树脂以重量比3.5:1组成的混合物。
所述填充剂为硫酸钡或陶土。
所述发泡剂为偶氮二甲酸钡或对甲苯磺酰肼。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比2.2:1组成的混合物。
所述交联剂为4,4-二(叔丁基过氧化)戊酸正丁酯。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比3.5:1组成的混合物。
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为200千克力,成型温度为180℃,成型时间为11min,脱模后,制得所述鞋大底。
实施例11
一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于100℃已预热好的模具中,然后加入70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,100℃继续烘烤15min,脱模后室温放置或85℃烘烤10h,制得鞋大底的中底;
该实施例采用的中底的制备原料与实施例5中中底的制备原料一致,在此不再赘述。
(2)制备耐磨底:将EVA耐磨底材料于110℃混炼5min,然后在120℃进行开炼10min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为180℃,发泡时间为1min,然后将模具冷却至50℃,制得鞋大底的耐磨底;
所述EVA耐磨底材料包括如下重量份的原料:EVA树脂80份、乙烯-辛烯共聚物弹性体25份、三元乙丙橡胶20份、填充剂15份、改性碳纤维8份、发泡剂4份、发泡促进剂1.8份、交联剂0.8份、耐寒剂8-12份、分散剂1.0份、抗氧剂0.5份和润滑剂1.6份。
所述EVA树脂是由醋酸乙烯含量为25%的EVA树脂和醋酸乙烯含量为50%的EVA树脂以重量比4:1组成的混合物。
所述填充剂为二氧化硅。
所述发泡剂为对甲苯磺酰肼或4,4’-氧代双苯磺酰肼。
所述发泡促进剂是由氧化锌和硬脂酸锌以重量比2.5:1组成的混合物。
所述交联剂为过4,4-二(叔丁基过氧化)戊酸正丁酯。
所述耐寒剂是由丁腈橡胶和顺丁橡胶以重量比4:1组成的混合物。
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为300千克力,成型温度为200℃,成型时间为10min,脱模后,制得所述鞋大底。
实施例12
一体成型的鞋大底,所述鞋大底根据实施例7-11所述的制备方法制得。本发明制得的鞋大底的邵氏硬度可以达到55-60A,耐磨性好,安全环保。
上述实施例为本发明较佳的实现方案,除此之外,本发明还可以其它方式实现,在不脱离本发明构思的前提下任何显而易见的替换均在本发明的保护范围之内。

Claims (10)

1.一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,其特征在于:鞋大底的制备方法包括如下步骤:
(1)制备耐磨底:将聚氨酯耐磨底材料混合均匀,浇注于85-95℃已预热好的模具中,真空除泡,85-95℃加热2-6min后加压成型,85-95℃继续烘烤6-10min,脱模后室温放置或75-85℃烘烤10-12h,制得鞋大底的耐磨底;
(2)灌注成型:将模具于80-100℃预热,将冷却后的耐磨底置于模具的模穴底部,将聚氨酯中底材料混合均匀,真空除泡后部分浇注于模具中,然后加入60-70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,使聚氨酯中底材料热融并与所述耐磨底的上表面粘合形成鞋大底的中底,80-100℃继续烘烤15-20min,脱模后室温放置或75-85℃烘烤10-12h,制得所述鞋大底。
2.根据权利要求1所述的一体成型的鞋大底的制备方法,其特征在于:所述步骤(1)中,聚氨酯耐磨底材料由组分I1和组分P1组成;所述组分I1在25℃时的粘度为350-450mPa.s,在50℃时的粘度为175-225mPa.s,所述组分P1在25℃时的粘度为1300-1500mPa.s,在50℃时的粘度为500-700mPa.s。
3.根据权利要求2所述的一体成型的鞋大底的制备方法,其特征在于:所述步骤(1)中,聚氨酯耐磨底材料的混合步骤具体为:A、将组分P1与催化剂、消泡剂混合均匀形成组分P1';B、将组分I1于30-40℃混合均匀,将组分P1'于45-55℃混合均匀;C、将混合均匀后的组分I1和组分P1'以重量比45-55:100混合均匀。
4.根据权利要求3所述的一体成型的鞋大底的制备方法,其特征在于:所述组分P1、催化剂和消泡剂的重量比为45-55:0.30-0.70:0.06-0.10。
5.根据权利要求1所述的一体成型的鞋大底的制备方法,其特征在于:所述步骤(2)中,聚氨酯中底材料由组分I2和组分P2以重量比55-65:100组成。
6.根据权利要求5所述的一体成型的鞋大底的制备方法,其特征在于:所述步骤(2)中,聚氨酯中底材料的混合步骤具体为:a、将组分P2在80-90℃预热至固体完全熔为液体后于45-55℃搅拌均匀;b、将组分I2于30-40℃混合均匀;c、将混合均匀后的组分I2和组分P2以重量比55-65:100混合均匀。
7.根据权利要求1所述的一体成型的鞋大底的制备方法,其特征在于:所述步骤(2)中,第一次浇注的聚氨酯中底材料、TPU颗粒和第二次浇注的聚氨酯中底材料的重量比为25-35:60:85-95。
8.根据权利要求1所述的一体成型的鞋大底的制备方法,其特征在于:所述聚氨酯中底材料为无色透明,所述TPU颗粒为红色,所述聚氨酯耐磨底材料为无色透明至半透明。
9.一体成型的鞋大底的制备方法,所述鞋大底包括中底和耐磨底,其特征在于:鞋大底的制备方法包括如下步骤:
(1)制备中底:将聚氨酯中底材料混合均匀,真空除泡后部分浇注于80-100℃已预热好的模具中,然后加入60-70℃已干燥的TPU颗粒,再继续浇注剩余的聚氨酯中底材料,在凝胶点时加压成型,80-100℃继续烘烤15-20min,脱模后室温放置或75-85℃烘烤10-12h,制得鞋大底的中底;
(2)制备耐磨底:将EVA耐磨底材料于90-110℃混炼5-25min,然后在80-120℃进行开炼10-30min,将开炼物置于模具中,后将其置于平板硫化机中进行模压发泡成型,发泡温度为140-180℃,发泡时间为1-10min,然后将模具冷却至10-50℃,制得鞋大底的耐磨底;
(3)热压成型:将制备的耐磨底和中底依次放入模具内热压成型,成型压力为50-300千克力,成型温度为100-200℃,成型时间为10-14min,脱模后,制得所述鞋大底。
10.一体成型的鞋大底,其特征在于:所述鞋大底根据权利要求1-9任一项所述的制备方法制得。
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Application publication date: 20191108