CN111410761A - 一种丁腈橡胶细纹手套的制备方法 - Google Patents
一种丁腈橡胶细纹手套的制备方法 Download PDFInfo
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Abstract
本发明公开了一种丁腈橡胶细纹手套的制备方法,属于丁腈手套生产技术领域,所述方法是先将手套内胆浸凝固剂,然后在丁腈起皱胶乳中浸胶,再分别浸入第一拉纹溶剂、第二拉纹溶剂中进行两次表面处理,最后硫化烘干制得丁腈橡胶细纹手套。通过第一次表面处理后,手套表面已形成均匀地细纹效果,但是第一次处理后花纹很快(1‑5min)会变浅、消失,本发明采取第二次固化拉纹处理,可以巩固这种细纹的立体感,避免花纹的变浅,提高手套的防滑性能。
Description
技术领域
本发明属于丁腈手套生产技术领域,具体涉及一种丁腈橡胶细纹手套的制备方法。
背景技术
手套是作业保护最重要的劳保用品,其发展速度很快,不断地满足了社会的需求。丁腈手套广泛应用于石油化工、油漆印刷、农牧、汽车机械维修等行业,是人们日常劳动中最主要的保护手部的劳动保护工具,具有轻巧灵敏、柔软,防油渍、耐酸碱、抗腐蚀等优点,但是现有的丁腈手套其表面多为光面,防滑效果很差,影响人们的使用。通常为了满足特殊需要(如需增大摩擦力)而要求对手套的胶面进行必要处理,目前市售皱纹手套,大多为天然乳胶类皱纹手套,但是天然乳胶类皱纹手套,虽然防滑效果较好,但是有乳胶特异性IgE,乳胶可通过皮肤、粘膜或者肠道外途径导致过敏,其耐油性、耐磨性能方面都明显不足。而由于丁腈胶乳是一种极性较大的胶乳,很难找到适于生产应用、能快速溶胀丁腈橡胶的油剂,因此很难起皱。虽有一些手套其局部经表面处理,形成磨砂手套来增大手套表面的摩擦力,但其制作工艺复杂,水环境污染严重。此外,现有技术中公开的一种丁腈橡胶起皱手套的制备方法,其主要是通过在手套胚浸胶后再浸入表面处理油剂进行表面处理,制得丁腈橡胶起皱手套。然而,该方法存在的问题是在经过表面处理油剂处理后产生的花纹随着温度的变化会很快扁平、消失,导致花纹立体感不强、花纹比较浅,所以摩擦系数较小,抓着能力弱,防滑性能差,因而其应用范围受到了局限。
发明内容
针对上述技术问题,本发明提供一种丁腈橡胶细纹手套的制备方法,通过在丁腈起皱胶乳中浸胶,再分别浸入第一拉纹溶剂、第二拉纹溶剂中进行两次表面处理,最后硫化烘干制得丁腈橡胶细纹手套,该细纹手套的花纹立体感强、稳定性好,不会随着温度变化而消失、变浅。
为实现上述目的,本发明采用以下技术方案:
一种丁腈橡胶细纹手套的制备方法,所述方法是先将手套内胆浸凝固剂,然后在丁腈起皱胶乳中浸胶,再分别浸入第一拉纹溶剂、第二拉纹溶剂中进行两次表面处理,最后硫化烘干制得丁腈橡胶细纹手套。
具体包括以下步骤:
(1)浸凝固剂:所述凝固剂以甲醇为有机溶剂,在甲醇中添加1-10wt%的硝酸钙、氯化钙、醋酸中的任意一种;
(2)浸胶:所述丁腈起皱胶乳由以下重量份数的原料制备而成:丁腈胶乳100份,稳定剂0.3份,硫化剂0.7-1份,活性剂2-3份,促进剂0.5-0.9份,防老剂0.3-0.5份,分散剂0.08-0.1份,增稠剂0.6-1份;
(3)第一次表面处理:浸入第一拉纹溶剂中进行第一次表面处理,所述第一拉纹溶剂为二甲苯、甲苯、丙酮中的任意一种或几种的组合;
(4)第二次表面处理:浸入第二拉纹溶剂中进行第二次表面处理,所述第二拉纹溶剂为二甲苯、甲苯、丙酮中的任意一种或几种的组合作为有机溶剂,在有机溶剂其中添加1-10wt%的硝酸钙、氯化钙、醋酸中的任意一种;
(5)硫化烘干。
优选的,所述步骤(1)中套有手套内胆的手摸温度45-65℃,在凝固剂内浸泡时间为0.5-2.5s。
优选的,所述步骤(2)中丁腈起皱胶乳的胶料粘度为2500-3500mpa.s,浸泡时间0.1-1s。
优选的,所述步骤(3)与步骤(4)的浸泡时间为5-15s。
优选的,所述步骤(5)中的硫化烘干分四段烘箱进行,第一段烘箱为常温20min,第二段烘箱40-60℃30min,第三段烘箱80-90℃20min,第四段烘箱90-110℃20min。
优选的,所述增稠剂为羧甲基纤维素钠CMC、羟甲基乙基纤维素、羟乙基丙基纤维素、聚丙烯酸钠、聚丙烯酸、干酪素、聚乙烯醇PVA中的任意一种或几种的组合。
优选的,所述促进剂为促进剂D、DETU、DPG、M、TMTD、BZ、PZ、ZDC及CZ中的任意一种或几种的组合。
优选的,所述活性剂为氧化锌、碳酸锌及硬脂酸锌中的任意一种或几种的组合。
优选的,所述硫化剂为硫磺、秋兰姆类中的任意一种或几种的组合。
本发明的有益技术效果为:将浸胶后的手套在不同的拉纹溶剂中先后进行两次表面处理,第一次表面处理后,手套表面已形成均匀地细纹效果,但是第一次处理后花纹很快(1-5min)会变浅、消失,导致丁腈橡胶起皱手套的防滑性能减弱,不能在实际中批量生产、得到广泛应用,而本发明采取第二次固化拉纹处理,可以巩固这种细纹的立体感,避免花纹的变浅,提高手套的防滑性能,采取第二次固化拉纹处理的技术在本发明中首次提出;本发明采用的丁腈起皱胶乳为人工合成改性丁腈胶乳,通过选用合适的材料和设计合理的比例,其伸长率、溶胀比、表面张力等指标均接近于天然胶乳,这便使得丁腈胶乳在表面处理过程中可以更容易溶胀,从而得到与天然胶乳相似的细纹效果。
附图说明
图1为本发明实施例1制备的丁腈橡胶细纹手套的照片;
图2为图1的局部放大图。
具体实施方式
下面结合具体实施例对本发明作进一步说明。
实施例1
一种丁腈橡胶细纹手套的制备方法,具体包括以下步骤:
(1)浸凝固剂:先将手套内胆浸凝固剂,套有手套内胆的手摸温度45-65℃,在凝固剂内浸泡时间为0.5-2.5s,然后淋滤、干燥,所述凝固剂以甲醇为有机溶剂,在甲醇中添加3wt%的硝酸钙;
(2)浸胶:在丁腈起皱胶乳中浸胶,浸泡时间0.1-1s,并采用热风直吹的方式加速胶乳表面迅速成膜,所述丁腈起皱胶乳由以下重量份数的原料制备而成:丁腈胶乳100份,稳定剂0.3份,硫化剂0.7-1份,活性剂2-3份,促进剂0.5-0.9份,防老剂0.3-0.5份,分散剂0.08-0.1份,增稠剂0.6-1份,所得丁腈起皱胶乳的胶料粘度为2500-3500mpa.s;
(3)第一次表面处理:浸入第一拉纹溶剂中进行第一次表面处理,浸泡时间为5-15s,所述第一拉纹溶剂为二甲苯、甲苯的混合液;
(4)第二次表面处理:浸入第二拉纹溶剂中进行第二次表面处理,浸泡时间为5-15s,然后过水浸泡30min,水温30-40℃,所述第二拉纹溶剂为甲苯、丙酮的混合液作为有机溶剂,在有机溶剂其中添加3.5wt%的硝酸钙;
(5)硫化烘干:硫化烘干分四段烘箱进行,第一段烘箱为常温20min,第二段烘箱40-60℃30min,第三段烘箱80-90℃20min,第四段烘箱90-110℃20min。
所述增稠剂为聚丙烯酸钠,所述促进剂为促进剂D,所述活性剂为氧化锌,所述硫化剂为硫磺。
如图1所示,本实施例制备得到的丁腈橡胶细纹手套的照片,由该照片可清晰地看到手套橡胶表面有弯弯曲曲不规则皱纹纹路,纹路立体感强且稳定性好。
实施例2
一种丁腈橡胶细纹手套的制备方法,具体包括以下步骤:
(1)浸凝固剂:先将手套内胆浸凝固剂,套有手套内胆的手摸温度45-65℃,在凝固剂内浸泡时间为0.5-2.5s,然后淋滤、干燥,所述凝固剂以甲醇为有机溶剂,在甲醇中添加5wt%的氯化钙;
(2)浸胶:在丁腈起皱胶乳中浸胶,浸泡时间0.1-1s,并采用热风直吹的方式加速胶乳表面迅速成膜,所述丁腈起皱胶乳由以下重量份数的原料制备而成:丁腈胶乳100份,稳定剂0.3份,硫化剂0.7-1份,活性剂2-3份,促进剂0.5-0.9份,防老剂0.3-0.5份,分散剂0.08-0.1份,增稠剂0.6-1份,所得丁腈起皱胶乳的胶料粘度为2500-3500mpa.s;
(3)第一次表面处理:浸入第一拉纹溶剂中进行第一次表面处理,浸泡时间为5-15s,所述第一拉纹溶剂为二甲苯、甲苯、丙酮的混合液;
(4)第二次表面处理:浸入第二拉纹溶剂中进行第二次表面处理,浸泡时间为5-15s,然后过水浸泡30min,水温30-40℃,所述第二拉纹溶剂为二甲苯、甲苯、丙酮的混合液作为有机溶剂,在有机溶剂其中添加4.5wt%的氯化钙;
(5)硫化烘干:硫化烘干分四段烘箱进行,第一段烘箱为常温20min,第二段烘箱40-60℃30min,第三段烘箱80-90℃20min,第四段烘箱90-110℃20min。
所述增稠剂为羧甲基纤维素钠CMC,所述促进剂为DETU,所述活性剂为碳酸锌,所述硫化剂为秋兰姆类。
实施例3
一种丁腈橡胶细纹手套的制备方法,具体包括以下步骤:
(1)浸凝固剂:先将手套内胆浸凝固剂,套有手套内胆的手摸温度45-65℃,在凝固剂内浸泡时间为0.5-2.5s,然后淋滤、干燥,所述凝固剂以甲醇为有机溶剂,在甲醇中添加8wt%的醋酸;
(2)浸胶:在丁腈起皱胶乳中浸胶,浸泡时间0.1-1s,并采用热风直吹的方式加速胶乳表面迅速成膜,所述丁腈起皱胶乳由以下重量份数的原料制备而成:丁腈胶乳100份,稳定剂0.3份,硫化剂0.7-1份,活性剂2-3份,促进剂0.5-0.9份,防老剂0.3-0.5份,分散剂0.08-0.1份,增稠剂0.6-1份,所得丁腈起皱胶乳的胶料粘度为2500-3500mpa.s;
(3)第一次表面处理:浸入第一拉纹溶剂中进行第一次表面处理,浸泡时间为5-15s,所述第一拉纹溶剂为甲苯、丙酮的混合液;
(4)第二次表面处理:浸入第二拉纹溶剂中进行第二次表面处理,浸泡时间为5-15s,然后过水浸泡30min,水温30-40℃,所述第二拉纹溶剂为二甲苯作为有机溶剂,在有机溶剂其中添加7.5wt%的醋酸;
(5)硫化烘干:硫化烘干分四段烘箱进行,第一段烘箱为常温20min,第二段烘箱40-60℃30min,第三段烘箱80-90℃20min,第四段烘箱90-110℃20min。
所述增稠剂为羟甲基乙基纤维素,所述促进剂为BZ,所述活性剂为硬脂酸锌,所述硫化剂为硫磺。
对上述实施例1-3制得的丁腈橡胶细纹手套进行性能检测,检测结果如下:
表1 EN388测试结果
表2 EN420灵活度测试结果(根据可拿起最小直径圆柱体)
8MM | 3级 |
EN388测试结果为耐磨性能4级,抗割性能1级,抗撕裂性能3级,防穿刺性能1级;EN420测试灵活度为3级。
实施例1-3制备的手套防滑性能达到了A级,在轻油轻水的环境中其抓握力防滑性比光面的手套防滑性能大大提高。抗老化性能测试在60℃进行老化240小时无发粘硬化的现象。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的技术方案的基础上,本领域技术人员不需要付出创造性劳动即可做出的各种修改或变形仍在本发明的保护范围内。
Claims (10)
1.一种丁腈橡胶细纹手套的制备方法,其特征在于,所述方法是先将手套内胆浸凝固剂,然后在丁腈起皱胶乳中浸胶,再分别浸入第一拉纹溶剂、第二拉纹溶剂中进行两次表面处理,最后硫化烘干制得丁腈橡胶起皱手套。
2.根据权利要求1所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,具体包括以下步骤:
(1)浸凝固剂:所述凝固剂以甲醇为有机溶剂,在甲醇中添加1-10wt%的硝酸钙、氯化钙、醋酸中的任意一种;
(2)浸胶:所述丁腈起皱胶乳由以下重量份数的原料制备而成:丁腈胶乳100份,稳定剂0.3份,硫化剂0.7-1份,活性剂2-3份,促进剂0.5-0.9份,防老剂0.3-0.5份,分散剂0.08-0.1份,增稠剂0.6-1份;
(3)第一次表面处理:浸入第一拉纹溶剂中进行第一次表面处理,所述第一拉纹溶剂为二甲苯、甲苯、丙酮中的任意一种或几种的组合;
(4)第二次表面处理:浸入第二拉纹溶剂中进行第二次表面处理,所述第二拉纹溶剂为二甲苯、甲苯、丙酮中的任意一种或几种的组合作为有机溶剂,在有机溶剂其中添加1-10wt%的硝酸钙、氯化钙、醋酸中的任意一种;
(5)硫化烘干。
3.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述步骤(1)中套有手套内胆的手摸温度45-65℃,在凝固剂内浸泡时间为0.5-2.5s。
4.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述步骤(2)中丁腈起皱胶乳的胶料粘度为2500-3500mpa.s,浸泡时间0.1-1s。
5.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述步骤(3)与步骤(4)的浸泡时间为5-15s。
6.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述步骤(5)中的硫化烘干分四段烘箱进行,第一段烘箱为常温20min,第二段烘箱40-60℃30min,第三段烘箱80-90℃20min,第四段烘箱90-110℃20min。
7.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述增稠剂为羧甲基纤维素钠CMC、羟甲基乙基纤维素、羟乙基丙基纤维素、聚丙烯酸钠、聚丙烯酸、干酪素、聚乙烯醇PVA中的任意一种或几种的组合。
8.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述促进剂为促进剂D、DETU、DPG、M、TMTD、BZ、PZ、ZDC及CZ中的任意一种或几种的组合。
9.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述活性剂为氧化锌、碳酸锌及硬脂酸锌中的任意一种或几种的组合。
10.根据权利要求2所述的一种丁腈橡胶细纹手套的制备方法,其特征在于,所述硫化剂为硫磺、秋兰姆类中的任意一种或几种的组合。
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