CN114922003A - 一种防水耐污相纸的制备方法 - Google Patents
一种防水耐污相纸的制备方法 Download PDFInfo
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Abstract
本发明公开了一种防水耐污相纸的制备方法,属于相纸加工技术领域,包括如下步骤:S1、原纸的制备;S2、原纸处理;S3、淋膜;S4、涂布。本申请提供了一种防水耐污相纸的制备方法,通过原纸制备、原纸吹、淋膜、涂布等工艺的技术改进,不仅提高了相纸的防水耐污性,还显著改善了相纸的力学性能,并且效果持久。
Description
技术领域
本发明属于相纸加工技术领域,具体涉及一种防水耐污相纸的制备方法。
背景技术
相纸,又被称为感光印纸、照相纸和印相纸,根据其输出影像的方式被分为三大种类,分别为传统意义上的银盐冲印相纸、喷墨打印相纸和印刷相纸。目前相纸在市场上被广泛应用于婚纱摄影、儿童摄影等专业性较强的影像输出领域;还有广告材料、菜单、名片、简历以及家庭办公使用的各类大众领域。
随着数码显像及输出技术的飞速发展,对相纸的表面性能的要求越来越高,相纸原纸一般都是不防水的,并且耐污性极差,现今最常用的方式就是通过在原相纸的两面都淋膜一层树脂,来解决相纸纸基的防水问题,这种方法比较简单,但是在长时间的保存和使用中,表面的树脂层会发生开裂,从而失去防水性和耐污性。
发明内容
本发明的目的是针对现有的问题,提供了一种防水耐污相纸的制备方法。
本发明是通过以下技术方案实现的:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,完成后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为90~98:1共同置于珠磨机内进行研磨处理,完成后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末800~900份、铵磷脂3~5份、醋酸酯淀粉70~90份、2,4-二氯苯氧乙酸4~6份、施胶剂10~13份、湿强剂8~14份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
进一步地,步骤S101中所述的电离浸润处理具体为:在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1~2%、氨水2~4%、氯化银0.6~0.8%、硝酸铜0.4~0.6%、果胶酶0.03~0.05%、纤维素酶0.05~0.07%、半纤维素酶0.03~0.04%,余量为纯水,浸润时电压为200~220V,电流为5~7A,浸润时间为2~3h。
进一步地,步骤S102中所述的研磨处理时控制珠磨机的转速为1300~1700rpm,研磨时间为45~65min。
通过采用上述技术方方案,本申请在常规的淋膜工艺的基础上进行了很大程度的改进,不仅提高了相纸的防水耐污性能,还很好的增强了相纸的力学性能,具体的首先在原纸的制备中,在电离条件下对纤维原料进行浸润处理,通过通电,浸润液中的化合物会被电离成阳离子和阴离子,与纤维素酶、半纤维素酶等共同作用于纤维原料,提高纤维原料的原料,改善纤维原料的加工特性。然后将所得的纤维原料与纳米氧化锌按照一定的比例共同置于珠磨机内进行研磨处理,在研磨的过程中,纤维素的共价键和次价键被裂解,聚合度和结晶度下降,纳米氧化锌均匀地粘附到纤维原料的表面,提高纤维原料的比表面积,提高了纤维素的反应性能,另外此处理过程能促使纳米材料与原纸基体材料之间的紧密结合,从而增强相纸的防水性和耐污性,将所得的混合粉末同铵磷脂、醋酸酯淀粉、2,4-二氯苯氧乙酸等制成浆料,获得均相稳定的浆料。
进一步地,步骤S2中所述的电子束-冷等离子体循环处理时,剂量为300~500Gy的电子束辐照5~7min,功率为80~100W的冷等离子体处理3~5min为一个循环,总共处理3~5个循环。
通过采用上述技术方案,如果直接对原纸进行淋膜,会导致膜液黏附不紧密,防水耐污性能不显著的情况,因此本申请并没有直接对制得的原纸进行淋膜,而是在淋膜之前进行电子束-冷等离子体循环处理,电子束的辐照会激发原纸链骨架上的活性自由基,提高膜液的黏着,但是仅仅如此,只是会改善淋膜的效果,而对防水耐污性并没有直接的积极改善效果,本申请人在大量的试验中发现,将电子束和冷等离子体进行循环处理,不仅能提高膜液的黏着性,还能细化表面,提高表面膜液的致密性,改善其防水耐污性。
进一步地,步骤S401和步骤S402中所述的涂布液为同一种涂布液,涂布液中各成分及对应重量百分比为:颜料6~7%、胶黏剂2~3%、交联剂0.3~0.5%、固色剂0.2~0.5%、紫外线吸收剂0.2~0.4%、抗氧化剂0.07~0.09%、分散剂0.5~0.7%、表面活性剂2~5%、消泡剂0.05~0.09%,余量为纯水。
进一步地,步骤S401中所述的低温干燥时控制真空度为2~4Pa,干燥温度为30~34℃。
通过采用上述技术方案,通过两步涂布的方式来增强兔兔效果,先是进行喷覆,然后在半干的状态下进行涂布,能有效的防止一次涂布表面凹凸不平现象的发生,另外喷覆之后进行低温真空干燥,能形成一层薄薄的渗透层,能加强涂布的效果。
本发明相比现有技术具有以下优点:
本申请提供了一种防水耐污相纸的制备方法,通过原纸制备、原纸吹、淋膜、涂布等工艺的技术改进,不仅提高了相纸的防水耐污性,还显著改善了相纸的力学性能,并且效果持久。
具体实施方式
实施例1:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1%、氨水2%、氯化银0.6%、硝酸铜0.4%、果胶酶0.03%、纤维素酶0.05%、半纤维素酶0.03%,余量为纯水,浸润时电压为200V,电流为5A,浸润2h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为90:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1300rpm,研磨45min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末800份、铵磷脂3份、醋酸酯淀粉70份、2,4-二氯苯氧乙酸4份、施胶剂10份、湿强剂8份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为300Gy的电子束辐照5min,功率为80W的冷等离子体处理3min为一个循环,总共处理3个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为2Pa,干燥温度为30℃,涂布液中各成分及对应重量百分比为:颜料6%、胶黏剂2%、交联剂0.3%、固色剂0.2%、紫外线吸收剂0.2%、抗氧化剂0.07%、分散剂0.5%、表面活性剂2%、消泡剂0.05%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
实施例2:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为400Gy的电子束辐照6min,功率为90W的冷等离子体处理4min为一个循环,总共处理4个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
实施例3:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠2%、氨水4%、氯化银0.8%、硝酸铜0.6%、果胶酶0.05%、纤维素酶0.07%、半纤维素酶0.04%,余量为纯水,浸润时电压为220V,电流为7A,浸润3h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为98:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1700rpm,研磨65min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末900份、铵磷脂5份、醋酸酯淀粉90份、2,4-二氯苯氧乙酸6份、施胶剂13份、湿强剂14份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为500Gy的电子束辐照7min,功率为100W的冷等离子体处理5min为一个循环,总共处理5个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为4Pa,干燥温度为34℃,涂布液中各成分及对应重量百分比为:颜料7%、胶黏剂3%、交联剂0.5%、固色剂0.5%、紫外线吸收剂0.4%、抗氧化剂0.09%、分散剂0.7%、表面活性剂5%、消泡剂0.09%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
为了对本发明做更进一步的解释,下面结合下述具体实施例进行阐述。
对比例1:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行浸润处理,浸润处理的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为400Gy的电子束辐照6min,功率为90W的冷等离子体处理4min为一个循环,总共处理4个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例2:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、将纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S102、称取相应重量份的步骤S101所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S103、将步骤S102中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为400Gy的电子束辐照6min,功率为90W的冷等离子体处理4min为一个循环,总共处理4个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例3:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1混匀得混合物备用;
S103、称取相应重量份的步骤S102所得的混合物850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为400Gy的电子束辐照6min,功率为90W的冷等离子体处理4min为一个循环,总共处理4个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例4:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照处理,剂量为400Gy的电子束辐照24min,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例5:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行冷等离子体处理,功率为90W的冷等离子体处理24min,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例6:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、淋膜:
在步骤S1的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S3、涂布:
S301、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干,控制真空度为3Pa,干燥温度为32℃,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
S302、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
对比例7:
一种防水耐污相纸的制备方法,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1.5%、氨水3%、氯化银0.7%、硝酸铜0.5%、果胶酶0.04%、纤维素酶0.06%、半纤维素酶0.035%,余量为纯水,浸润时电压为210V,电流为6A,浸润2.5h后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为94:1共同置于珠磨机内进行研磨处理,控制珠磨机的转速为1500rpm,研磨55min后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末850份、铵磷脂4份、醋酸酯淀粉80份、2,4-二氯苯氧乙酸5份、施胶剂11.5份、湿强剂11份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,剂量为400Gy的电子束辐照6min,功率为90W的冷等离子体处理4min为一个循环,总共处理4个循环,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可,涂布液中各成分及对应重量百分比为:颜料6.5%、胶黏剂2.5%、交联剂0.4%、固色剂0.35%、紫外线吸收剂0.3%、抗氧化剂0.08%、分散剂0.6%、表面活性剂3.5%、消泡剂0.07%,余量为纯水;
为了对比本申请技术效果,分别用上述实施例2、对比例1~7的方法对应制备相纸,然后进行性能测试。
具体试验对比数据如下表1所示:
表1
接触角(°) | 耐破强度(kg/cm<sup>2</sup>) | |
实施例2 | 152.0 | 69.9 |
对比例1 | 146.0 | 63.2 |
对比例2 | 139.0 | 58.0 |
对比例3 | 141.0 | 61.6 |
对比例4 | 143.0 | 53.5 |
对比例5 | 137.0 | 54.2 |
对比例6 | 135.0 | 50.0 |
对比例7 | 147.0 | 64.6 |
由上表1可以看出,通过本申请方法制备的相纸,申请提供了一种防水耐污相纸的制备方法,通过原纸制备、原纸吹、淋膜、涂布等工艺的技术改进,不仅提高了相纸的防水耐污性,还显著改善了相纸的力学性能,并且效果持久。
Claims (6)
1.一种防水耐污相纸的制备方法,其特征在于,包括如下步骤:
S1、原纸的制备:
S101、对纤维原料进行电离浸润处理,完成后滤出烘干备用;
S102、将步骤S101中滤出的纤维原料与纳米氧化锌按照重量比为90~98:1共同置于珠磨机内进行研磨处理,完成后得混合粉末备用;
S103、称取相应重量份的步骤S102所得的混合粉末800~900份、铵磷脂3~5份、醋酸酯淀粉70~90份、2,4-二氯苯氧乙酸4~6份、施胶剂10~13份、湿强剂8~14份制成浆料备用;
S104、将步骤S103中所得的浆料压榨成原纸备用;
S2、原纸处理:
对步骤S1中所得的原纸进行电子束辐照-冷等离子体循环处理,完成后得处理后得原纸备用;
S3、淋膜:
在步骤S2处理后的原纸的双面淋聚乙烯膜,得到淋膜纸基备用;
S4、涂布:
S401、将涂布液均匀喷覆到步骤S3的淋膜纸基的表面,在真空条件下,低温干燥至半干;
S402、将涂布液均匀涂布到半干状态的淋膜纸基上,烘干即可。
2.根据权利要求1所述一种防水耐污相纸的制备方法,其特征在于,步骤S101中所述的电离浸润处理具体为:在电解槽内施加电流电压进行浸润处理,其中所使用的浸润液中各成分及对应重量百分比为:氢氧化钠1~2%、氨水2~4%、氯化银0.6~0.8%、硝酸铜0.4~0.6%、果胶酶0.03~0.05%、纤维素酶0.05~0.07%、半纤维素酶0.03~0.04%,余量为纯水,浸润时电压为200~220V,电流为5~7A,浸润时间为2~3h。
3.根据权利要求1所述一种防水耐污相纸的制备方法,其特征在于,步骤S102中所述的研磨处理时控制珠磨机的转速为1300~1700rpm,研磨时间为45~65min。
4.根据权利要求1所述一种防水耐污相纸的制备方法,其特征在于,步骤S2中所述的电子束-冷等离子体循环处理时,剂量为300~500Gy的电子束辐照5~7min,功率为80~100W的冷等离子体处理3~5min为一个循环,总共处理3~5个循环。
5.根据权利要求1所述一种防水耐污相纸的制备方法,其特征在于,步骤S401和步骤S402中所述的涂布液为同一种涂布液,涂布液中各成分及对应重量百分比为:颜料6~7%、胶黏剂2~3%、交联剂0.3~0.5%、固色剂0.2~0.5%、紫外线吸收剂0.2~0.4%、抗氧化剂0.07~0.09%、分散剂0.5~0.7%、表面活性剂2~5%、消泡剂0.05~0.09%,余量为纯水。
6.根据权利要求1所述一种防水耐污相纸的制备方法,其特征在于,步骤S401中所述的低温干燥时控制真空度为2~4Pa,干燥温度为30~34℃。
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