CN116511007A - 一种高度耐磨的皮革涂层工艺 - Google Patents
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Abstract
本发明公开了一种高度耐磨的皮革涂层工艺,包括如下步骤:(1)坯革磨革:磨去伤残,打开粒面,利于涂层与坯革结合更牢固;(2)喷底层涂料:涂覆于坯革表面,起到结合皮革纤维、遮盖的作用;(3)压板:在温度和压力作用下,在皮面压制出均匀细致的纹路,使涂层和坯革结合更牢固,遮盖坯革的一些伤残,提高成品利用率;(4)中层喷涂:对坯革遮盖上色,用于保护坯革;(5)喷顶层保护层:对顶层进行喷涂,干燥后形成保护层。本发明工艺制造的成品皮革,耐磨性能达到2000转/负荷1Kg/CS‑17砂轮,4‑5级(按《GB/T2726‑2005皮革物理和机械试验耐磨性能的测定》标准中Taber耐磨法),远超目前市面上传统皮革品种的耐磨性能。
Description
技术领域
本发明涉及皮革制造生产技术领域,具体为一种高度耐磨的皮革涂层工艺。
背景技术
近些年来,随着人们生活水平的提高和观念的改变,皮革制品的消费越来越普及,使用的场景越来越广泛,对皮革制品的质量和性能要求也越来越高,越来越具体,如要求皮革制品耐干/湿擦,耐磨耗,耐曲挠,耐黄变,耐水等,标准不断提升。
皮革耐磨性能主要是考核皮革产品表面涂层的牢固程度,体现皮革制品耐不耐使用的重要指标。若耐磨性能差,皮革产品使用不久后就会出现表面涂层磨损、脱落,影响其使用性能,若是深色皮革产品甚至还会污染使用者的衣服、鞋子和袜子等,所以耐磨性能是皮革制品的一项非常重要的物理性能。
目前一般鞋面革的耐磨标准是:50转/负荷1Kg/CS-17砂轮,4-5级;一般包袋革的耐磨标准是:250转/负荷1Kg/CS-17砂轮,4-5级;一般沙发革的耐磨标准是:500转/负荷1Kg/CS-17砂轮,4-5级(以上按《GB/T 2726-2005皮革物理和机械试验耐磨性能的测定》标准中Taber耐磨法)。远未能满足消费者日益增长的对皮革制品耐用性的要求。
发明内容
针对上述存在的技术不足,本发明的目的是提供一种高度耐磨的皮革涂层工艺,以解决背景技术中提出的问题。
为解决上述技术问题,本发明采用如下技术方案:
本发明提供一种高度耐磨的皮革涂层工艺,包括如下步骤:
(1)坯革磨革:磨去伤残,打开粒面,利于涂层与坯革结合更牢固;
(2)喷底层涂料:涂覆于坯革表面,起到结合皮革纤维、遮盖的作用;
(3)压板:在温度和压力作用下,在皮面压制出均匀细致的纹路,使涂层和坯革结合更牢固,遮盖坯革的一些伤残,提高成品利用率;
(4)中层喷涂:对坯革遮盖上色,用于保护坯革;
(5)喷顶层保护层:对顶层进行喷涂,干燥后形成保护层。
优选地,底层涂层和中层涂层配方均包括脂肪族聚氨酯树脂、甲基丙烯酸树脂、无机硅酸盐填料、无机颜料膏、氧化石墨烯分散液和γ-氨丙基三乙氧基硅烷。脂肪族聚氨酯树脂黏着性强,柔韧性、耐磨性好,与颜料及其他树脂混溶性良好;甲基丙烯酸树脂与坯革具有良好的黏合力,柔韧且富有弹性;无机硅酸盐填料具有优良的填充性,可明显提高涂层的遮盖力;无机颜料膏稳定性优,遮盖力强,均匀度好;氧化石墨烯具有含氧基团,易溶于水,反应活性良好,可与聚丙烯酸酯、聚氨酯树脂中的羟基、羧基或氨基反应,也可与皮革胶原纤维的羟基、羧基或氨基结合,形成致密的石墨烯层,具有良好的防水性和耐磨性;γ-氨丙基三乙氧基硅烷是偶联剂,既含有与有机树脂相容性高的官能团,又含有可与无机材料结合的基团,实现聚氨酯树脂、丙烯酸树脂和氧化石墨烯、无机硅酸盐填料、无机颜料膏的高效交联复合,形成牢固的网状结构树脂膜,能够明显提高涂层的耐磨性能。
优选地,顶层保护层配方包括脂肪族聚氨酯树脂、有机硅手感剂、氧化石墨烯分散液和γ-氨丙基三乙氧基硅烷。脂肪族聚氨酯树脂黏着性强,柔韧性、耐磨性好,与颜料及其他树脂混溶性良好;有机硅手感剂赋予涂层滑爽舒适的手感,兼具良好的耐磨性;氧化石墨烯具有含氧基团,易溶于水,反应活性良好,可与聚丙烯酸酯、聚氨酯树脂中的羟基、羧基或氨基反应,也可与皮革胶原纤维的羟基、羧基或氨基结合,形成致密的石墨烯层,具有良好的防水性和耐磨性;γ-氨丙基三乙氧基硅烷是偶联剂,既含有与有机树脂相容性高的官能团,又含有可与无机材料结合的基团,实现聚氨酯树脂、有机硅手感剂和氧化石墨烯的高效交联复合,形成牢固的网状结构树脂膜,能够明显提高涂层的耐磨性能。
优选地,底层喷涂,喷底涂2次,每次6-10g/SF。
优选地,压板条件为:坯革经压板机在90-95℃、10-15MPa压力、2-4秒的作用下压制形成纹路。
优选地,中层喷涂,喷底涂2次,每次4-6g/SF。
优选地,顶层喷涂,喷顶层2次,每次3-6g/SF。
优选地,底层涂层和中层涂层的配方还包括水,且重量份为:水400-600份,脂肪族聚氨酯树脂400-600份,甲基丙烯酸树脂300-400份,无机硅酸盐填料150-250份,无机颜料膏180-280份,氧化石墨烯分散液20-40份;γ-氨丙基三乙氧基硅烷40-60份。
优选地,顶层保护层的配方还包括水,且重量份为:水100-150份,脂肪族聚氨酯树脂60-120份,有机硅手感剂8-16份,氧化石墨烯分散液10-20份;γ-氨丙基三乙氧基硅烷20-40份。
本发明的有益效果在于:
本发明工艺制造的成品皮革,耐磨性能达到2000转/负荷1Kg/CS-17砂轮,4-5级(按《GB/T 2726-2005皮革物理和机械试验耐磨性能的测定》标准中Taber耐磨法),远超目前市面上传统皮革品种的耐磨性能,且成品率高,利于推广使用。
具体实施方式
下面将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,都属于本发明保护的范围。
以下结合实施例对本发明的特征和性能作进一步的详细描述。
实施例1:
本发明提供了一种高度耐磨的皮革涂层工艺,包括如下步骤:
(1)选坯革:正常大生产坯革;
(2)坯革磨革:磨去伤残,打开粒面,利于涂层与坯革结合更牢固;
(3)底涂:喷底涂2次,每次6-10g/SF,涂覆于坯革表面,起到结合皮革纤维、遮盖的作用,底涂配方:水400-600份,脂肪族聚氨酯树脂(RU-73-901)400-600份,甲基丙烯酸树脂(Primal SB-300)300-400份,无机硅酸盐填料(EUDERM Matt SN-C)150-250份,无机颜料膏180-280份,氧化石墨烯分散液20-40份;γ-氨丙基三乙氧基硅烷(97%)40-60份;
(4)压板:经过压板机90-95℃、10-15MPa压力、2-4秒时间作用下,在皮面压制出均匀细致的纹路,使涂层和坯革结合更牢固,有效遮盖坯革的一些伤残,提高成品利用率;
(5)中涂:喷中涂2次,每次4-6g/SF,配方同底涂,起到遮盖、上色、保护的作用;
(6)顶层保护层:喷顶层2次,每次3-6g/SF,顶层配方:水100-150份,脂肪族聚氨酯树脂(BAYDERM Finish 3041)60-120份,有机硅手感剂(Melio WF-5230)8-16份,氧化石墨烯分散液10-20份;γ-氨丙基三乙氧基硅烷(97%)20-40份,干燥后形成光泽透亮、耐水、耐溶剂、耐干/湿擦、耐磨的保护层;
(7)成品:经过检验、量尺、打包即成品。
实施例2:
本发明提供了一种高度耐磨的皮革涂层工艺,包括如下步骤:
(1)选坯革:正常大生产坯革;
(2)坯革磨革:磨去伤残,打开粒面,利于涂层与坯革结合更牢固;
(3)底涂:喷底涂2次,每次8g/SF,涂覆于坯革表面,起到结合皮革纤维、遮盖的作用,底涂配方:水500份,脂肪族聚氨酯树脂(RU-73-901)500份,甲基丙烯酸树脂(PrimalSB-300)350份,无机硅酸盐填料(EUDERM Matt SN-C)200份,无机颜料膏230份,氧化石墨烯分散液30份;γ-氨丙基三乙氧基硅烷(97%)50份;
(4)压板:经过压板机92℃、13MPa压力、3秒时间作用下,在皮面压制出均匀细致的纹路,使涂层和坯革结合更牢固,有效遮盖坯革的一些伤残,提高成品利用率;
(5)中涂:喷中涂2次,每次5g/SF,配方同底涂,起到遮盖、上色、保护的作用;
(6)顶层保护层:喷顶层2次,每次5g/SF,顶层配方:水130份,脂肪族聚氨酯树脂(BAYDERM Finish 3041)90份,有机硅手感剂(Melio WF-5230)12份,氧化石墨烯分散液15份;γ-氨丙基三乙氧基硅烷(97%)30份,干燥后形成光泽透亮、耐水、耐溶剂、耐干/湿擦、耐磨的保护层;
(7)成品:经过检验、量尺、打包即成品。
本发明通过《GB/T 2726-2005皮革物理和机械试验耐磨性能的测定》标准Taber耐磨法对实施例1和实施例2所制成的成品进行检测:
由此可见,本发明所制成的皮革耐磨性能远高于普通皮革。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (9)
1.一种高度耐磨的皮革涂层工艺,其特征在于,包括如下步骤:
(1)坯革磨革:磨去伤残,打开粒面,利于涂层与坯革结合更牢固;
(2)喷底层涂料:涂覆于坯革表面,起到结合皮革纤维、遮盖的作用;
(3)压板:在温度和压力作用下,在皮面压制出均匀细致的纹路,使涂层和坯革结合更牢固,遮盖坯革的一些伤残,提高成品利用率;
(4)中层喷涂:对坯革遮盖上色,用于保护坯革;
(5)喷顶层保护层:对顶层进行喷涂,干燥后形成保护层。
2.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述底层涂层和中层涂层配方均包括脂肪族聚氨酯树脂、甲基丙烯酸树脂、无机硅酸盐填料、无机颜料膏、氧化石墨烯分散液和γ-氨丙基三乙氧基硅烷。
3.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述顶层保护层配方包括脂肪族聚氨酯树脂、有机硅手感剂、氧化石墨烯分散液和γ-氨丙基三乙氧基硅烷。
4.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述底层喷涂,喷底涂2次,每次6-10g/SF。
5.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述压板条件为:坯革经压板机在90-95℃、10-15MPa压力、2-4秒的作用下压制形成纹路。
6.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述中层喷涂,喷底涂2次,每次4-6g/SF。
7.如权利要求1所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述顶层喷涂,喷顶层2次,每次3-6g/SF。
8.如权利要求2所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述底层涂层和中层涂层的配方还包括水,且重量份为:水400-600份,脂肪族聚氨酯树脂400-600份,甲基丙烯酸树脂300-400份,无机硅酸盐填料150-250份,无机颜料膏180-280份,氧化石墨烯分散液20-40份;γ-氨丙基三乙氧基硅烷40-60份。
9.如权利要求3所述的一种高度耐磨的皮革涂层工艺,其特征在于,所述顶层保护层的配方还包括水,且重量份为:水100-150份,脂肪族聚氨酯树脂60-120份,有机硅手感剂8-16份,氧化石墨烯分散液10-20份;γ-氨丙基三乙氧基硅烷20-40份。
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