CN112195656A - 一种环保型聚氨酯超细纤维合成革贝斯的制备方法 - Google Patents
一种环保型聚氨酯超细纤维合成革贝斯的制备方法 Download PDFInfo
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Abstract
本发明属于环保型聚氨酯超细纤维合成革的制备技术领域,具体涉及一种环保型聚氨酯超细纤维合成革贝斯的制备方法,包括以下处理步骤:纺丝、无纺布、无纺布定型、含浸、开纤、干燥、揉软以及后整理。本发明的制备方法采用环保型高固含聚氨酯,对超纤无纺布进行干式含浸更节能减排,并配以合理的超纤生产工艺,使得本发明制备的超纤贝斯具有生态环保,肉感丰满,折痕细腻等特性,可以提升超纤革的档次,媲美天然动物皮,大大降低了原材料的消耗,大大降低VOC的挥发,并提升了产品品质,可循环性经济性比较高,更具有可持续发展方向。
Description
技术领域
本发明涉及制革领域,尤其涉及一种降低了原材料的消耗,降低VOC的挥发,并提升了产品品质,可循环性经济性比较高,具有极高的抗拉力、耐磨的环保型聚氨酯超细纤维合成革贝斯的制备方法。
背景技术
目前,市场上多数的合成革采用溶剂型聚氨酯,溶剂型聚氨酯环保性差,在生产过程中有机溶剂挥发量大,不符合当今绿色环保的趋势。由于水性聚氨酯以水为分散介质,在生产过程中没有溶剂的挥发,对环境无污染,对生产车间的操作人员无健康危害,较为环保无害。同时,水性聚氨酯生产过程中没有异味,不易燃烧,加工过程安全可靠。随着人们生活品质的不断提高,水性聚氨酯越来越多的应用到合成革领域中。
如申请号为CN201110232140
.8的中国专利公开了一种超纤环保水性合成革及其制备方法,该合成革包括超纤无纺布、覆盖在无纺布上的底层,以及覆盖在底层上的面层,其中,面层包括至少4层由浆料涂刮形成的涂层,各浆料中包括:水性聚氨酯、水、以及水性助剂。该合成革通过采用水性聚氨酯树脂,避免了采用溶剂型聚氨酯树脂,使得所制备的合成革环保,无害于人体。
虽然上述合成革采用了水性聚氨酯,现有的合成革在抗拉力、耐磨等物理性能等方面仍有待进一步完善。
发明内容
本发明的目的在于为了解决现有的合成革在抗拉力、耐磨等物理性能较差的缺陷,而提供一种降低了原材料的消耗,降低VOC的挥发,并提升了产品品质,可循环性经济性比较高,具有极高的抗拉力、耐磨的环保型聚氨酯超细纤维合成革贝斯的制备方法。
为了实现上述目的,本发明采用以下技术方案:
一种环保型聚氨酯超细纤维合成革贝斯的制备方法,所述制备方法包括以下步骤:
(1)“定岛”型复合纤维的制备:将尼龙6和水溶性聚酯,经熔融螺杆挤出通过喷丝板获得“定岛”型复合短纤维,其中以尼龙6为“岛”,水溶性聚酯为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的“定岛”型复合纤维,经过开松、梳理、铺网、针刺,制备“定岛”超纤无纺布;
(3)预浸渍:配制浸渍浆料,再将浸渍浆料均匀的渗透到步骤(2)中的浸渍浆料里,干燥处理,烫辊制成无纺布;
(4)涂敷:配制涂敷浆料,将步骤(3)得到的无纺布经过浆料涂敷充分垫平,经过蒸汽凝胶,同时烘干固化成型,得到超纤三维结构贝斯;
(5)开纤:将步骤(4)制备的超纤贝斯置于热碱水中,将水溶性聚酯溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
本发明以“定岛”型复合纤维制备的无纺布作为基布,选用水性阴离子聚醚共聚有机硅树脂、水性异氰酸酯交联剂、水性非离子稳定剂、水性非离子渗透剂等原料进行浸渍,制备工艺环保,无毒。
本发明在涂覆前进行预浸渍-干燥-
烫辊,能够使浸渍液充分渗透进入纤维之间的空隙,提高无纺布对浸渍液的吸收率,从而提高产品的强度;其次,在干燥处理后,使得无纺布进行收缩形成“海绵”结构,再进行烫辊制成相对酷似天然动物皮,富有弹性的无纺布;并且先进行预浸渍-
烫缩,再涂覆,与直接涂覆浆料后烘干固化相比;后者固化时由于聚氨酯以及无纺布发生热缩,会导致革面出现褶皱而不够平整,且内应力无法消除。而预浸渍-干燥-烫辊-
涂覆的工艺则能够克服这一技术问题。
本发明在浸渍浆料与涂覆浆料中还添加有纳米海泡石纤维粉填料,由于海泡石属于链状结构的含水铝镁硅酸盐矿物,在链状结构中含有层状结构类型的小单元,属于2:1型层,海泡石的单元层孔洞,使得其具有良好的物理化学性能,而选择纳米海泡石纤维粉填料,是因为纳米级别的具有中空孔隙的管状无机材料,具有良好的吸附性,与聚氨酯复配固化形成革面后,能够起到吸湿的作用,提高产品的吸湿性和透气性,同时其也能提高合成革的抗拉力和耐磨性。
作为优选,步骤(1)中尼龙6和水溶性聚酯的质量比为70:30~80:20,“定岛”型复合短纤维的卷曲密度为3.0~4.0dtex,切断长度为51mm。
本发明选用上述特定的定岛型超细纤维无纺布,其强度高,制的绒面革后拉伸轻度、抗撕裂强度出色。其海组分溶解后,岛组分柔顺性好,能够提高绒面革的手感。
作为优选,步骤(2)中“定岛”超纤无纺布的幅宽为1500mm,厚度1.8mm,克重580g/m2。
作为优选,步骤(3)中干燥处理的温度为120-140℃,时间4-7min;烫辊的温度为80-120℃。
作为优选,步骤(4)中烘干成型的温度为90-130℃。
作为优选,步骤(5)中热碱水的碱液浓度为0.5-4%。
作为优选,步骤(2)中,所述浸渍浆料按重量份计,配比为:水性阴离子聚醚共聚有机硅树脂:100份,水性异氰酸酯交联剂:10-40份,水性非离子稳定剂:0.1~2份,水性非离子渗透剂:0.5~2份,纳米海泡石纤维粉填料:0~30份。
作为优选,所述水性阴离子聚醚共聚有机硅树脂为聚醚共聚型的水性聚氨酯改性树脂,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa。
作为优选,步骤(4)中,所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:60-90份,环保型高固含改性树脂FB:10-40份,凝胶剂:0.1~2份,纳米海泡石纤维粉填料:0~30份。
作为优选,所述环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa。
与现有技术相比,本发明的有益效果是:本发明制备的环保型聚氨酯超细纤维合成革贝斯,采用定岛超细纤维针刺无纺布与环保型高固含聚氨酯渗透复合烘干成型工艺无废水产生,经低碱度溶液减量开纤碱液可循环利用,经后整理其成三维立体结构,具有极高的抗拉力、耐磨等物理性能,透气性、柔软舒适性,使其达到了天然皮革的“仿真形”效果;
本发明的制备方法采用环保型高固含聚氨酯,对超纤无纺布进行干式含浸更节能减排,并配以合理的超纤生产工艺,使得本发明制备的超纤贝斯具有生态环保,肉感丰满,折痕细腻等特性,可以提升超纤革的档次,媲美天然动物皮,大大降低了原材料的消耗,大大降低VOC的挥发,并提升了产品品质,更节能减排经济效益高,可循环性经济性比较高,更具有可持续发展方向。
具体实施方式
为了使本技术领域的人员更好地理解本发明方案,下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分的实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都应当属于本发明保护的范围。
在本发明中使用的纳米海泡石纤维粉填料,是用偶联剂对海泡石纤维粉进行改性,具体改性方法属于常规技术手段。
实施例1
本实施例提供了一种环保型聚氨酯超细纤维合成革贝斯的制备方法,,所述制备方法包括以下步骤:
(1)
“定岛”型复合纤维的制备:将尼龙6(PA6)和水溶性聚酯(COPET),按照比例为PA6:COPET=70:30,经过A\B组份熔融螺杆挤出通过喷丝板获得线拉伸、卷曲密度为3.0dtex,切断长度为51mm左右的“定岛”型复合短纤维,其中以PA6为“岛”,COPET为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的定岛复合短纤维,经过开松、梳理、铺网、针刺工序,制备出具有幅宽1500mm、厚度1.8mm和克重580g/m2的无纺布;
(3)预浸渍:配制浸渍浆料,再通过设备将浆料通过机械发泡通过浸渍均匀的渗透到上道步骤中的无纺布里,经120℃的温度下经过4min的干燥处理,将进行收缩形成“海绵”结构,然后再经过80℃烫辊制成一定厚度的,相对酷似天然动物皮较有弹性的无纺布;浸渍浆料按重量份计,配比为:聚醚共聚型的水性聚氨酯改性树脂:100份,水性异氰酸酯交联剂:10份,水性非离子稳定剂:0.1份,水性非离子渗透剂:0.5份;其中,水性阴离子聚醚共聚有机硅树脂为,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa
(4)涂敷:配制涂敷浆料,通过涂敷设备将上道步骤得到的无纺布经过浆料涂敷充分垫平,并经过蒸汽凝胶同时90℃烘干固化成型得到超纤三维结构贝斯;所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:60份,环保型高固含改性树脂FB:10份,凝胶剂:0.1份;
其中,环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa;
(5)开纤:将上道步骤制备的浸渍超纤贝斯在碱液浓度0.5%的热碱水中将复合纤维中的COPET进行溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
实施例2
本实施例提供了一种环保型聚氨酯超细纤维合成革贝斯的制备方法,,所述制备方法包括以下步骤:
(1)
“定岛”型复合纤维的制备:将尼龙6(PA6)和水溶性聚酯(COPET),按照比例为PA6:COPET=80:20,经过A\B组份熔融螺杆挤出通过喷丝板获得线拉伸、卷曲密度为3.5dtex,切断长度为51mm左右的“定岛”型复合短纤维,其中以PA6为“岛”,COPET为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的定岛复合短纤维,经过开松、梳理、铺网、针刺等工序,制备出具有幅宽1500mm、厚度1.8mm和克重580g/m2的无纺布;
(3)预浸渍:配制浸渍浆料,再通过设备将浆料通过机械发泡通过浸渍均匀的渗透到上道步骤中的无纺布里,经130℃的温度下经过6min的干燥处理,将进行收缩形成“海绵”结构,然后再经过100℃烫辊制成一定厚度的,相对酷似天然动物皮较有弹性的无纺布;浸渍浆料按重量份计,配比为:聚醚共聚型的水性聚氨酯改性树脂:100份,水性异氰酸酯交联剂:25份,水性非离子稳定剂:1.2份,水性非离子渗透剂:1.5份,纳米海泡石纤维粉填料:18份;其中,水性阴离子聚醚共聚有机硅树脂为,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa
(4)涂敷:配制涂敷浆料,通过涂敷设备将上道步骤得到的无纺布经过浆料涂敷充分垫平,并经过蒸汽凝胶同时110℃烘干固化成型得到超纤三维结构贝斯;所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:75份,环保型高固含改性树脂FB:25份,凝胶剂:1.8份,纳米海泡石纤维粉填料:20份;
其中,环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa;
(5)开纤:将上道步骤制备的浸渍超纤贝斯在碱液浓度2.2%的热碱水中将复合纤维中的COPET进行溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
实施例3
本实施例提供了一种环保型聚氨酯超细纤维合成革贝斯的制备方法,,所述制备方法包括以下步骤:
(1)
“定岛”型复合纤维的制备:将尼龙6(PA6)和水溶性聚酯(COPET),按照比例为PA6:COPET=80:20,经过A\B组份熔融螺杆挤出通过喷丝板获得线拉伸、卷曲密度为4.0dtex,切断长度为51mm左右的“定岛”型复合短纤维,其中以PA6为“岛”,COPET为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的定岛复合短纤维,经过开松、梳理、铺网、针刺等工序,制备出具有幅宽1500mm、厚度1.8mm和克重580g/m2的无纺布;
(3)预浸渍:配制浸渍浆料,再通过设备将浆料通过机械发泡通过浸渍均匀的渗透到上道步骤中的无纺布里,经140℃的温度下经过7min的干燥处理,将进行收缩形成“海绵”结构,然后再经过120℃烫辊制成一定厚度的,相对酷似天然动物皮较有弹性的无纺布;浸渍浆料按重量份计,配比为:聚醚共聚型的水性聚氨酯改性树脂:100份,水性异氰酸酯交联剂:40份,水性非离子稳定剂:2份,水性非离子渗透剂:2份,纳米海泡石纤维粉填料:30份;其中,水性阴离子聚醚共聚有机硅树脂为,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa
(4)涂敷:配制涂敷浆料,通过涂敷设备将上道步骤得到的无纺布经过浆料涂敷充分垫平,并经过蒸汽凝胶同时130℃烘干固化成型得到超纤三维结构贝斯;所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:90份,环保型高固含改性树脂FB:40份,凝胶剂:2份,纳米海泡石纤维粉填料:30份;
其中,环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa;
(5)开纤:将上道步骤制备的浸渍超纤贝斯在碱液浓度4%的热碱水中将复合纤维中的COPET进行溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
实施例4
本实施例提供了一种环保型聚氨酯超细纤维合成革贝斯的制备方法,,所述制备方法包括以下步骤:
(1)
“定岛”型复合纤维的制备:将尼龙6(PA6)和水溶性聚酯(COPET),按照比例为PA6:COPET=70:30,经过A\B组份熔融螺杆挤出通过喷丝板获得线拉伸、卷曲密度为3.0dtex,切断长度为51mm左右的“定岛”型复合短纤维,其中以PA6为“岛”,COPET为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的定岛复合短纤维,经过开松、梳理、铺网、针刺等工序,制备出具有幅宽1500mm、厚度1.8mm和克重580g/m2的无纺布;
(3)预浸渍:配制浸渍浆料,再通过设备将浆料通过机械发泡通过浸渍均匀的渗透到上道步骤中的无纺布里,经140℃的温度下经过4min的干燥处理,将进行收缩形成“海绵”结构,然后再经过120℃烫辊制成一定厚度的,相对酷似天然动物皮较有弹性的无纺布;浸渍浆料按重量份计,配比为:聚醚共聚型的水性聚氨酯改性树脂:100份,水性异氰酸酯交联剂:36份,水性非离子稳定剂:1.8份,水性非离子渗透剂:2.4份,纳米海泡石纤维粉填料:10份;其中,水性阴离子聚醚共聚有机硅树脂为,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa
(4)涂敷:配制涂敷浆料,通过涂敷设备将上道步骤得到的无纺布经过浆料涂敷充分垫平,并经过蒸汽凝胶同时130℃烘干固化成型得到超纤三维结构贝斯;所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:90份,环保型高固含改性树脂FB:10份,凝胶剂:1.1份,纳米海泡石纤维粉填料:20份;
其中,环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa;
(5)开纤:将上道步骤制备的浸渍超纤贝斯在碱液浓度0.5%的热碱水中将复合纤维中的COPET进行溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
实施例5
本实施例提供了一种环保型聚氨酯超细纤维合成革贝斯的制备方法,,所述制备方法包括以下步骤:
(1)
“定岛”型复合纤维的制备:将尼龙6(PA6)和水溶性聚酯(COPET),按照比例为PA6:COPET=70:30,经过A\B组份熔融螺杆挤出通过喷丝板获得线拉伸、卷曲密度为4.0dtex,切断长度为51mm左右的“定岛”型复合短纤维,其中以PA6为“岛”,COPET为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的定岛复合短纤维,经过开松、梳理、铺网、针刺等工序,制备出具有幅宽1500mm、厚度1.8mm和克重580g/m2的无纺布;
(3)预浸渍:配制浸渍浆料,再通过设备将浆料通过机械发泡通过浸渍均匀的渗透到上道步骤中的无纺布里,经135℃的温度下经过6min的干燥处理,将进行收缩形成“海绵”结构,然后再经过115℃烫辊制成一定厚度的,相对酷似天然动物皮较有弹性的无纺布;浸渍浆料按重量份计,配比为:聚醚共聚型的水性聚氨酯改性树脂:100份,水性异氰酸酯交联剂:33份,水性非离子稳定剂:0.8份,水性非离子渗透剂:1.4份,纳米海泡石纤维粉填料:20份;其中,水性阴离子聚醚共聚有机硅树脂为,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa
(4)涂敷:配制涂敷浆料,通过涂敷设备将上道步骤得到的无纺布经过浆料涂敷充分垫平,并经过蒸汽凝胶同时125℃烘干固化成型得到超纤三维结构贝斯;所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:55份,环保型高固含改性树脂FB:25份,凝胶剂:2份,纳米海泡石纤维粉填料:10份;
其中,环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa;
(5)开纤:将上道步骤制备的浸渍超纤贝斯在碱液浓度2%的热碱水中将复合纤维中的COPET进行溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
对实施例1-3制备的环保型聚氨酯超细纤维合成革贝斯进行性能测试,测试结果见表1。
表1.测试结果
由表1可见,本发明制备的环保型聚氨酯超细纤维合成革贝斯,具有极高的抗拉力、耐磨等物理性能,透气性、柔软舒适性,使其达到了天然皮革的“仿真形”效果。
本发明的制备方法采用环保型高固含聚氨酯,对超纤无纺布进行干式含浸更节能减排,并配以合理的超纤生产工艺,使得本发明制备的超纤贝斯具有生态环保,肉感丰满,折痕细腻等特性,可以提升超纤革的档次,媲美天然动物皮,大大降低了原材料的消耗,大大降低VOC的挥发,并提升了产品品质,更节能减排经济效益高,可循环性经济性比较高,更具有可持续发展方向。
本发明中所用原料、设备,若无特别说明,均为本领域的常用原料、设备;本发明中所用方法,若无特别说明,均为本领域的常规方法。
虽然已参照几个典型实施例描述了本发明,但应当理解,所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质,所以应当理解,上述实施例不限于任何前述的细节,而应在随附权利要求所限定的精神和范围内广泛地解释,因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。
Claims (10)
1.一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,所述制备方法包括以下步骤:
(1)“定岛”型复合纤维的制备:将尼龙6和水溶性聚酯,经熔融螺杆挤出通过喷丝板获得“定岛”型复合短纤维,其中以尼龙6为“岛”,水溶性聚酯为“海”;
(2)“定岛”超纤无纺布的制备:采用步骤(1)中的“定岛”型复合纤维,经过开松、梳理、铺网、针刺,制备“定岛”超纤无纺布;
(3)预浸渍:配制浸渍浆料,再将浸渍浆料均匀的渗透到步骤(2)中的浸渍浆料里,干燥处理,烫辊制成无纺布;
(4)涂敷:配制涂敷浆料,将步骤(3)得到的无纺布经过浆料涂敷充分垫平,经过蒸汽凝胶,同时烘干固化成型,得到超纤三维结构贝斯;
(5)开纤:将步骤(4)制备的超纤贝斯置于热碱水中,将水溶性聚酯溶解去除,将每根“定岛”复合纤维分成束状超细纤维;
(6)后整理:将步骤(5)中的束状超细纤维,经过干燥、柔软处理、片皮、磨皮、染色,得到环保型聚氨酯超细纤维合成革贝斯。
2.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(1)中尼龙6和水溶性聚酯的质量比为70:30~80:20,“定岛”型复合短纤维的卷曲密度为3.0~4.0dtex,切断长度为51mm。
3.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(2)中“定岛”超纤无纺布的幅宽为1500mm,厚度1.8mm,克重580g/m2。
4.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(3)中干燥处理的温度为120-140℃,时间4-7min;烫辊的温度为80-120℃。
5.根据权利要求2所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(4)中烘干成型的温度为90-130℃。
6.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(5)中热碱水的碱液浓度为0.5-4%。
7.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(2)中,所述浸渍浆料按重量份计,配比为:水性阴离子聚醚共聚有机硅树脂:100份,水性异氰酸酯交联剂:10-40份,水性非离子稳定剂:0.1~2份,水性非离子渗透剂:0.5~2份,纳米海泡石纤维粉填料:0~30份。
8.根据权利要求7所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,所述水性阴离子聚醚共聚有机硅树脂为聚醚共聚型的水性聚氨酯改性树脂,固含量为50~60%,粘度为0.5~1万cps,模量为1.0~5.0MPa。
9.根据权利要求1所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,步骤(4)中,所述涂敷浆料按重量份计,配比为:环保型高固含改性树脂FA:60-90份,环保型高固含改性树脂FB:10-40份,凝胶剂:0.1~2份,纳米海泡石纤维粉填料:0~30份。
10.根据权利要求9所述的一种环保型聚氨酯超细纤维合成革贝斯的制备方法,其特征在于,所述环保型高固含改性树脂为聚炭聚醚共聚或共混型的环保型聚氨酯改性树脂,固含量为95-98%,粘度为3~10万cps,模量为2.0~9.0MPa。
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