CN109180907A - 高标准鞋底用改性mdi及其制备方法 - Google Patents

高标准鞋底用改性mdi及其制备方法 Download PDF

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CN109180907A
CN109180907A CN201810730742.8A CN201810730742A CN109180907A CN 109180907 A CN109180907 A CN 109180907A CN 201810730742 A CN201810730742 A CN 201810730742A CN 109180907 A CN109180907 A CN 109180907A
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modified mdi
high standard
mdi
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polyester polyol
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李海朝
甘经虎
孙清峰
任明月
吴淑廷
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Shandong Inov Polyurethane Co Ltd
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Abstract

本发明属于聚氨酯技术领域,具体的涉及一种高标准鞋底用改性MDI及其制备方法。以重量百分数计,原料组成为:聚酯醚多元醇20%‑40%,二元醇5%‑10%,异氰酸酯50‑70%,阻聚剂30ppm。采用本发明所述的方法制备的改性MDI,很好的改善了制品泡沫壁的韧性和弹性,提高舒适度;产品体系中加入聚酯醚多元醇改变了聚氨酯制品的结构,显著提高了鞋底的弹性及尺寸稳定性,二元醇的引入增强了泡孔的承载力,采用本发明所述的改性MDI生产的聚氨酯鞋底具有优异的力学性能和曲挠性,并且回弹好、尺寸稳定性高,本发明所述的改性MDI的制备方法工艺简单,易操作。

Description

高标准鞋底用改性MDI及其制备方法
技术领域
本发明属于聚氨酯技术领域,具体的涉及一种高标准鞋底用改性MDI及其制备方法。
背景技术
鞋底原液兼具了弹性体优良的机械性能和泡沫的舒适性,与橡胶相比具有强度高、韧性好、重量轻及抗曲挠性能突出的优点,同时可以制成不同用途、不同颜色的鞋,满足人们不同需求。按使用的主体原料分为聚酯型和聚醚型两类。聚酯型鞋底耐磨性好、抗撕裂性优。聚醚型鞋底原液耐水解性、耐低温韧性优异,可以用于潮湿环境及气候恶劣地区,如寒冷、降雨量大的地区,主要生产制造拖鞋、耐寒鞋底产品。
近年来,受原材料价格及劳动力成本上涨以及劳动力短缺等影响,中国皮鞋行业发展面临了较大的压力,此种趋势必然加速落后产能的淘汰,引导企业向产业高附加值方向发展。鞋类产业的升级必将给行业的领先企业提供更多的行业发展机遇,迫切需求开发高附加值、功能化的新材料,特别是更加轻便、舒适、耐磨、环保性材料。
当前,聚醚改性MDI产品耐水解性能虽好,但是力学性能又存在很大的不足。聚酯改性MDI的产品性能虽好,但其开孔性及尺寸稳定性在低密度鞋底中都受到很大的局限性,并且水解性能不好,在潮湿环境下直接影响到了性能指标,所以,选择一种性能优异的高标准鞋底用改性MDI产品也就迫切要求。
发明内容
本发明的目的是克服现有技术的不足,提供一种高标准鞋底用改性MDI。采用本发明所述的改性MDI生产的聚氨酯鞋底具有优异的力学性能和曲挠性,并且回弹好、尺寸稳定性高;本发明同时提供了其制备方法。
本发明所述的高标准鞋底用改性MDI,以重量百分数计,原料组成为:
其中:
聚酯醚多元醇是以聚酯多元醇为起始剂的环氧丙烷和/或环氧乙烷的共聚物,羟值为50-80mgKOH/g。
聚酯多元醇为2官能度,数均分子量为1500-2500、羟值为45-75mg KOH/g。
聚酯多元醇是羟值为57mg KOH/g的聚酯多元醇PEA;聚酯多元醇PEA的制备方法为将乙二醇和1,4-丁二醇加入反应釜,边搅拌边升温,然后加入己二酸和催化剂钛酸四丁酯,当釜温升至130-150℃,酯化反应开始有水蒸馏出时,同时对反应釜抽气,控制并减缓升温速率,使反应平稳进行,保温2h-3h,然后升温到230℃并控制釜内压力,再保温4-5h,得产品聚酯多元醇PEA。
聚酯醚多元醇的制备方法为:将聚酯多元醇在催化剂作用下与环氧丙烷和/或环氧乙烷反应,制得聚酯醚多元醇PEPO;催化剂为二甲胺或二乙胺中的一种或两种。
当聚酯多元醇为PEA时,聚酯醚多元醇的制备方法为:将质量分数40-60%的PEA与二甲胺加入反应釜,减压;再投质量分数为0-20%的环氧丙烷和/或20-40%的环氧乙烷的共聚物,升温至100℃~130℃,釜内压力0.07~0.4MPa,反应3~5h,抽真空,待温度降至90℃以下,进行检测,分子量为2000-2200,羟值为52-57mg KOH/g,酸值≤1.5mg KOH/g,水分≤0.05%,即得聚酯醚多元醇产品。
异氰酸酯为MDI-100(万华化学)、MDI-50(万华化学)、44C(科思创)、0129M(科思创)或碳化二亚胺改性MDI中的一种或多种;二元醇为官能度为2,数均分子量为40-400。
碳化二亚胺改性MDI是103C(巴斯夫)或CD-C(科思创);二元醇是KG-02(市售)、1,4-丁二醇(市售)、乙二醇(市售)或DL-400(山东蓝星东大有限公司)中的一种或多种。
阻聚剂为磷酸或苯甲酰氯中的一种或两种,均为市售。
本发明所述的高标准鞋底用改性MDI的制备方法为:将配方量的聚酯醚多元醇、二元醇在常温下加入到搅拌釜进行搅拌,转速为80-100r/min,升温到100-110℃,抽真空至-0.095Mpa,脱水脱气2-3h;检测水分含量低于万分之五时,降温至30-40℃,加入异氰酸酯和阻聚剂,升温至70-85℃,反应2-3h,降至室温,氮气密封装桶。
使用时,利用公知的鞋底A组分和本发明所制备的改性MDI(B组分),按照异氰酸指数100的指标称量,将计量好的A组分和B组分倒入塑料杯,搅拌器转速3000r/min,搅拌4-6s,倒入400mm×100mm×5mm的模具,模温40-50℃,4分钟开模,放置48小时,测试机械力学性能。
其中,所述的A组分为:聚酯多元醇为90%的PE-2515(山东一诺威聚氨酯股份有限公司,数均分子量为1500,市售);二元醇为7%的乙二醇(市售);叔胺催化剂为2%的A33(市售);泡沫稳定剂为0.6%的DC2525(市售);发泡剂为0.4%的水。
本发明与现有技术相比,具有以下有益效果:
(1)采用本发明所述的方法制备的改性MDI,很好的改善了制品泡沫壁的韧性和弹性,提高舒适度;产品体系中加入聚酯醚多元醇改变了聚氨酯制品的结构,显著提高了鞋底的弹性及尺寸稳定性,二元醇的引入增强了泡孔的承载力。
(2)采用本发明所述的改性MDI生产的聚氨酯鞋底具有优异的力学性能和曲挠性,并且回弹好、尺寸稳定性高。
(3)本发明所述的改性MDI的制备方法工艺简单,易操作。
具体实施方式
以下结合实施例对本发明作进一步描述。
以下实施例中所述的PEPO的制备方法为:将60%的PEA与二甲胺加入反应釜,减压;再投入10%环氧丙烷和30%环氧乙烷的共聚物,升温至120℃,釜内压力0.2MPa,反应5h。抽真空,待温度降至90℃,检测分子量为2000-2200,羟值为57mg KOH/g、酸值酸值为0.7mgKOH/g、水分0.03%,即得产品。
实施例1
本发明所述的高标准鞋底用改性MDI,其原料组成为:以质量分数计,44C为60%、103C为5%、PEPO为30%、KG-02为5%、阻聚剂为总质量的30ppm。
制备时:将配方量的PEPO、KG-02常温下加入搅拌釜,开启搅拌,转速为100r/min,升温到105℃下搅拌,抽真空至低于-0.095Mpa,脱水脱气3h,检测水分含量低于万分之五,降温至40℃,加44C、103C和磷酸,升温到85℃,反应2h,抽样检测合格后,降温到室温,氮气密封装桶。
使用时:利用公知的鞋底A组分和本发明的改性MDI(B组分),按照异氰酸指数100的指标称量,将计量好的A组分和B组分倒入塑料杯内,搅拌器转速为3000r/min,搅拌4s,倒入400mm×100mm×5mm的模具中,模温40℃,4分钟开模,放置48h,测试机械力学性能。
实施例2
本发明所述的高标准鞋底用改性MDI,其原料组成为:MDI-50为10%、44C为45%、103C为10%、PEPO为29%、DL-400为6%、磷酸为总质量的30ppm。
制备时:将配方量的PEPO、DL-400常温下加入搅拌釜,开启搅拌,转速90r/min,升温到110℃,抽真空至低于-0.095Mpa,脱水脱气3h,检测水分含量低于万分之五,降温至35℃,加MDI-50、44C、103C和磷酸,升温到80℃,反应3h,抽样检测合格后,降温到室温,氮气密封装桶。
使用时:利用公知的鞋底A组分和本发明的改性MDI(B组分),按照异氰酸指数100的指标称量,将计量好的A组分和B组分倒入塑料杯内,搅拌器转速为3000r/min,搅拌6s,倒入400mm×100mm×5mm的模具,模温为45℃,4分钟开模,放置48小时,测试机械力学性能。
实施例3
本发明所述的鞋底用改性MDI,其原料组成为:MDI-100为70%、PEPO为25%、1,4-丁二醇为5%、苯甲酰氯为总质量的30ppm。
制备时:将配方量的PEPO、1,4-丁二醇常温下加入搅拌釜,开启搅拌,转速80r/min,升温到110℃下,抽真空至真空度低于-0.095Mpa,脱水脱气3h,检测水分含量低于万分之五,降温至40℃,加MDI-100和苯甲酰氯,升温到70℃,反应3h,抽样检测合格后,降温到室温,氮气密封装桶。
使用时:利用公知的鞋底A组分和本发明的改性MDI(B组分),按照异氰酸指数100的指标称量,将计量好的A组分和B组分倒入塑料杯内,搅拌器转速为3000r/min,搅拌5s,倒入400mm×100mm×50mm的模具,模温为50℃,4分钟开模,放置48h,测试机械力学性能。
对比例1
聚酯改性MDI,以质量分数计,44C为60%、103C为5%、PEA为35%、磷酸为总质量的10ppm。
制备时:将配方量的PEA加入搅拌釜,开启搅拌,转速为100r/min,升温到105℃下搅拌,抽真空至低于-0.095Mpa,脱水脱气3h,检测水分含量低于万分之五,降温至40℃,加44C、103C和磷酸,升温到85℃,反应2h,检测合格后,降温到室温,氮气密封装桶。
使用时:利用公知的鞋底A组分和对比例1制备的改性MDI,按照异氰酸指数100的指标称量,将计量好的A组分和B组分倒入塑料杯内,搅拌器转速为3000r/min,搅拌4s,倒入400mm×100mm×5mm的模具中,模温40℃,4分钟开模,放置48h,测试机械力学性能。
对实施例1-3和对比例1制备的聚氨酯鞋底进行性能测试,测试结果如下:
实施例1-3与对比例1测试的力学性能结果
注意:90°Ross曲挠测试为采用高铁检测仪器有限公司生产的Ross耐折试验机,型号GT-7011-R,以90°的角度、频率100/分钟的反复弯曲挠折视其受损及龟裂程度,符合ASTM-D1052等的标准要求。

Claims (10)

1.一种高标准鞋底用改性MDI,其特征在于:以重量百分数计,原料组成为:
2.根据权利要求1所述的高标准鞋底用改性MDI,其特征在于:聚酯醚多元醇是以聚酯多元醇为起始剂的环氧丙烷和/或环氧乙烷的共聚物,羟值为50-80mgKOH/g。
3.根据权利要求2所述的高标准鞋底用改性MDI,其特征在于:聚酯多元醇为2官能度,数均分子量为1500-2500、羟值为45-75mg KOH/g。
4.根据权利要求3所述的高标准鞋底用改性MDI,其特征在于:聚酯多元醇是羟值为57mg KOH/g的聚酯多元醇PEA;聚酯多元醇PEA的制备方法为将乙二醇和1,4-丁二醇加入反应釜,边搅拌边升温,然后加入己二酸和催化剂钛酸四丁酯,当釜温升至130-150℃,酯化反应开始有水蒸馏出时,同时对反应釜抽气,控制并减缓升温速率,使反应平稳进行,保温2h-3h,然后升温到230℃并控制釜内压力,再保温4-5h,得产品聚酯多元醇PEA。
5.根据权利要求1所述的高标准鞋底用改性MDI,其特征在于:聚酯醚多元醇的制备方法为:将聚酯多元醇在催化剂作用下与环氧丙烷和/或环氧乙烷反应,制得聚酯醚多元醇PEPO;催化剂为二甲胺或二乙胺中的一种或两种。
6.根据权利要求5所述的高标准鞋底用改性MDI,其特征在于:当聚酯多元醇为PEA时,聚酯醚多元醇的制备方法为:将质量分数40-60%的PEA与二甲胺加入反应釜,减压;再投质量分数0-20%的环氧丙烷和/或质量分数20-40%的环氧乙烷的共聚物,升温至100℃~130℃,釜内压力0.07~0.4MPa,反应3~5h,抽真空,待温度降至90℃以下,进行检测,分子量为2000-2200,羟值为52-57mg KOH/g,酸值≤1.5mg KOH/g,水分≤0.05%,即得聚酯醚多元醇产品。
7.根据权利要求1所述的高标准鞋底用改性MDI,其特征在于:异氰酸酯为MDI-100、MDI-50、44C、0129M或碳化二亚胺改性MDI中的一种或多种;二元醇为官能度为2,数均分子量为40-400。
8.根据权利要求7所述的高标准鞋底用改性MDI,其特征在于:碳化二亚胺改性MDI是103C或CD-C;二元醇是KG-02、1,4-丁二醇、乙二醇或DL-400中的一种或多种。
9.根据权利要求1所述的高标准鞋底用改性MDI,其特征在于:阻聚剂为磷酸或苯甲酰氯中的一种或两种。
10.一种权利要求1所述的高标准鞋底用改性MDI的制备方法,其特征在于:将配方量的聚酯醚多元醇、二元醇在常温下加入到搅拌釜进行搅拌,转速为80-100r/min,升温到100-110℃,抽真空至-0.095Mpa,脱水脱气2-3h;检测水分含量低于万分之五时,降温至30-40℃,加入异氰酸酯和阻聚剂,升温至70-85℃,反应2-3h,降至室温,氮气密封装桶。
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