CN115233378B - 一种卫生材料用sm材料的制备方法 - Google Patents

一种卫生材料用sm材料的制备方法 Download PDF

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Publication number
CN115233378B
CN115233378B CN202211009542.6A CN202211009542A CN115233378B CN 115233378 B CN115233378 B CN 115233378B CN 202211009542 A CN202211009542 A CN 202211009542A CN 115233378 B CN115233378 B CN 115233378B
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Prior art keywords
woven fabric
melt
spun
preparation
blown
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CN115233378A (zh
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黄文胜
刘雨佳
谢国东
张卫东
孙伟峰
孙松
苏芮
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Dongying Junfu Purification Technology Co ltd
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Dongying Junfu Purification Technology Co ltd
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Priority to CN202211009542.6A priority Critical patent/CN115233378B/zh
Publication of CN115233378A publication Critical patent/CN115233378A/zh
Priority to PCT/CN2023/088574 priority patent/WO2024040991A1/zh
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
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    • B32B5/265—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary characterised by one fibrous or filamentary layer being a non-woven fabric layer
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
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    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
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    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/44—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds
    • D01F6/46—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds as major constituent with other polymers or low-molecular-weight compounds of polyolefins
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    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
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    • D04H1/4291—Olefin series
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    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
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    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
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Abstract

本发明公开了一种卫生材料用SM材料的制备方法，属于SM材料技术领域，所述制备方发包括：制备纺粘无纺布，制备熔喷无纺布，制备改性液，复合；所述制备纺粘无纺布，将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为68‑70:3‑5:10‑12:2‑4:1‑3投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布在改性液中浸泡，然后干燥，得到纺粘无纺布；本发明能够在提高SM无纺布的透气性和透水蒸气性的同时，提高SM无纺布的强度、柔软度、均匀性，降低SM无纺布的热收缩率。

Description

一种卫生材料用SM材料的制备方法
技术领域
本发明涉及SM材料技术领域，具体涉及一种卫生材料用SM材料的制备方法。
背景技术
目前，消费者除了关心纸尿裤的安全性外，选择纸尿裤更多考虑其舒适性，而透气性又是影响舒适性的一个重要因素。当婴幼儿睡觉或外出前，父母可能为他们穿上纸尿裤，在他们便溺前的好长一段时间，如果纸尿裤透气性不好，婴幼儿会因为纸尿裤不透气，体表温度升高，觉得不舒服，从而引起皮肤不适。另外，在有便溺情况时，纸尿裤与皮肤之间的空隙就会变得湿热，若透水蒸气性好，会减轻湿热的程度，增强舒适度；反之，透水蒸气性太差，产生的焐热感会使婴幼儿不舒服，严重时还会引起湿疹；现有的纸尿裤材料主要是将聚乙烯膜与纺粘无纺布膜进行复合，虽然强度高，抗渗透性好，但是透气性、透湿性和柔软度差，使用熔喷无纺布与纺粘无纺布复合制得SM无纺布，能够解决透气性、透湿性和柔软度的问题，但是SM无纺布易分层，而且强度低，抗渗透性差。
为了提高SM无纺布的强度和抗渗透性，解决易分层的问题，目前最常用的方法是增加无纺布的厚度，但是增加无纺布的厚度的同时，会造成SM无纺布的透气性、透湿性和柔软度降低，还会造成SM无纺布的热收缩率大，均匀性差。目前，还没有能够在提高SM无纺布的强度和抗渗透性性的同时，提高SM无纺布的透气性、透湿性、柔软度、均匀性，避免分层，并降低SM无纺布的热收缩率的方法。
发明内容
针对现有技术存在的不足，本发明提供了一种卫生材料用SM材料的制备方法，能够在提高SM无纺布的强度和抗渗透性性的同时，提高SM无纺布的透气性、透湿性、柔软度、均匀性，避免分层，并降低SM无纺布的热收缩率。
为解决以上技术问题，本发明采取的技术方案如下：
一种卫生材料用SM材料的制备方法，包括：制备纺粘无纺布，制备熔喷无纺布，制备改性液，复合。
所述制备纺粘无纺布，将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为68-70:3-5:10-12:2-4:1-3投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布浸入改性液中，在30-35℃下静置20-25min，得到浸泡后的初级纺粘无纺布，然后将浸泡后的初级纺粘无纺布置于50-55℃干燥45-50min，得到纺粘无纺布；
所述制备纺粘无纺布中，所述PP料的MFR范围为35-40g/10min；
所述制备纺粘无纺布中，所述熔喷PP料的MFR范围为1500-1800g/10min；
所述改性填料的制备方法为：将微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠加入球磨机中进行球磨，控制球磨时的球料比为10-12:1，转速为320-350rpm，时间为30-35min，球磨结束进行紫外-超声处理，控制紫外-超声处理中紫外灯的功率为300-320W，紫外灯中心波长为340-360nm，超声波的输出功率为380-400W，紫外-超声处理时间为20-25min，紫外-超声处理结束，得到改性填料；
所述改性填料的制备中，微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠的重量比为3-5:18-20:3-7:4-6:1-2；
所述改性填料的制备中，所述纳米碳酸钙的粒径为50-80nm；
所述制备纺粘无纺布中，所述改性液的组成，按重量份计，包括：3-5份聚乙烯醇，2-4份聚乙烯吡咯烷酮，1-2份明矾，0.1-0.3份聚乙烯亚胺，30-35份去离子水；
所述制备纺粘无纺布中，初级纺粘无纺布与改性液的重量比为1:2-2.3。
所述制备熔喷无纺布，将熔喷PP料、聚乙烯蜡、纳米电气石粉、包覆粉末按照重量比为70-75:2-4:6-9:5-8投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量后，经热气流超倍牵伸后，纤维冷却固化沉积于集网装置上，收卷成网，即得到熔喷无纺布；
所述包覆粉末的制备方法为：将纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼混合后加入球磨机中进行球磨，控制球磨时的球料比为10-12:1，转速为300-320rpm，时间为30-35min，球磨结束后得到混合粉，将混合粉置于包裹液中，进行超声震荡，控制超声震荡的频率为30-40kHz，功率为300-400W，时间为30-35min，超声震荡结束，得到浆料，将浆料置于70-75℃下烘至质量不再发生变化，得到包覆粉末；
所述包覆粉末的制备中，纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼的重量比为22-25:3-5:4-6:2-4；
所述包覆粉末的制备中，混合粉与包裹液的重量比为10:3-4；
所述包裹液的组成，按重量份计，包括：2-4份硅烷偶联剂KH540，1-3份阿拉伯胶，1-2份1,2-丙二醇，1.5-3份葡聚糖，12-15份去离子水。
所述包覆粉末的制备中，所述纳米氧化铝的粒径为180-200nm；
所述包覆粉末的制备中，所述纳米氮化硼的粒径为80-100nm；
所述制备熔喷无纺布中，所述熔喷PP料的MFR范围为1200-1400g/10min；
所述制备熔喷无纺布中，所述纳米电气石粉的粒径为100-120nm。
所述制备改性液，将透明质酸、山梨酸、硝酸银、十二烷基二甲基甜菜碱、甲酸、明胶、去离子水按照重量比为5-7:1-2:0.3-0.5:1.5-2:4-6:1-2:36-38混合均匀，在50-55℃下以100-120rpm的搅拌速度搅拌20-25min，得到初级改性液，对初级改性液进行微波改性，控制微波改性的功率为400-450W，时间为4-6min，微波改性结束得到改性液；
所述制备改性液中，所述透明质酸的重均分子量为100-120万。
所述复合，将改性液喷淋至纺粘无纺布，控制喷淋速度为200-220mL/min，改性液的用量为300-320mL/m2，喷淋结束后置于40-45℃下干燥1.5-2h，得到喷淋后的纺粘无纺布，然后向喷淋后的纺粘无纺布喷热熔胶，控制热熔胶的上胶量为3-5g/m，得到喷胶后的纺粘无纺布，将喷胶后的纺粘无纺布与熔喷无纺布进行复合，得到SM无纺布。
与现有技术相比，本发明的有益效果为：
（1）本发明的卫生材料用SM材料的制备方法，能够提高SM无纺布的透气性和透水蒸气性，制备的SM无纺布的透气度为1.9-2.2cc/cm2•sec，透湿度为13800-14300g/m2•24hr；
（2）本发明的卫生材料用SM材料的制备方法，能够提高SM无纺布的强度，制备的SM无纺布的抓取强度为63-68N，撕裂强度为22-26N，顶破强度为191-197N；
（3）本发明的卫生材料用SM材料的制备方法，能够提高SM无纺布的柔软度，制备的SM无纺布的柔软度为3.65-3.71g；
（4）本发明的卫生材料用SM材料的制备方法，能够提高SM无纺布的均匀性，制备的SM无纺布的纤网不匀率CV值为0.9-1.2%；
（5）本发明的卫生材料用SM材料的制备方法，能够降低SM无纺布的热收缩率，制备的SM无纺布的干热收缩率为0.3-0.5%；
（6）本发明的卫生材料用SM材料的制备方法，能够提高SM无纺布的抗渗透能力，制备的SM无纺布的静水压为73.2-75.7cmH2O，相比较于单独的熔喷无纺布，抗渗透能力大大增强。
具体实施方式
为了对本发明的技术特征、目的和效果有更加清楚的理解，现说明本发明的具体实施方式。
实施例1
一种卫生材料用SM材料的制备方法，具体为：
1.制备纺粘无纺布：将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为68:3:10:2:1投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布浸入改性液中，在30℃下静置20min，得到浸泡后的初级纺粘无纺布，然后将浸泡后的初级纺粘无纺布置于50℃干燥45min，得到纺粘无纺布；
所述PP料的MFR范围为35g/10min；
所述熔喷PP料的MFR范围为1500g/10min；
所述改性填料的制备方法为：将微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠加入球磨机中进行球磨，控制球磨时的球料比为10:1，转速为320rpm，时间为30min，球磨结束进行紫外-超声处理，控制紫外-超声处理中紫外灯的功率为300W，紫外灯中心波长为340nm，超声波的输出功率为380W，紫外-超声处理时间为20min，紫外-超声处理结束，得到改性填料；
其中，微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠的重量比为3:18:3:4:1；
所述纳米碳酸钙的粒径为50nm；
所述改性液的组成，按重量份计，包括：3份聚乙烯醇，2份聚乙烯吡咯烷酮，1份明矾，0.1份聚乙烯亚胺，30份去离子水；
其中，初级纺粘无纺布与改性液的重量比为1:2。
2.制备熔喷无纺布：将熔喷PP料、聚乙烯蜡、纳米电气石粉、包覆粉末按照重量比为70:2:6:5投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量后，经热气流超倍牵伸后，纤维冷却固化沉积于集网装置上，收卷成网，即得到熔喷无纺布；
所述包覆粉末的制备方法为：将纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼混合后加入球磨机中进行球磨，控制球磨时的球料比为10:1，转速为300rpm，时间为30min，球磨结束后得到混合粉，将混合粉置于包裹液中，进行超声震荡，控制超声震荡的频率为30kHz，功率为300W，时间为30min，超声震荡结束，得到浆料，将浆料置于70℃下烘至质量不再发生变化，得到包覆粉末；
其中，纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼的重量比为22:3:4:2；
其中，混合粉与包裹液的重量比为10:3；
所述包裹液的组成，按重量份计，包括：2份硅烷偶联剂KH540，1份阿拉伯胶，1份1,2-丙二醇，1.5份葡聚糖，12份去离子水。
所述纳米氧化铝的粒径为180nm；
所述纳米氮化硼的粒径为80nm；
所述熔喷PP料的MFR范围为1200g/10min；
所述纳米电气石粉的粒径为100nm。
3.制备改性液：将透明质酸、山梨酸、硝酸银、十二烷基二甲基甜菜碱、甲酸、明胶、去离子水按照重量比为5:1:0.3:1.5:4:1:36混合均匀，在50℃下以100rpm的搅拌速度搅拌20min，得到初级改性液，对初级改性液进行微波改性，控制微波改性的功率为400W，时间为4min，微波改性结束得到改性液；
所述透明质酸的重均分子量为100万。
4.复合：所述复合，将改性液喷淋至纺粘无纺布，控制喷淋速度为200mL/min，改性液的用量为300mL/m2，喷淋结束后置于40℃下干燥1.5h，得到喷淋后的纺粘无纺布，然后向喷淋后的纺粘无纺布喷热熔胶，控制热熔胶的上胶量为3g/m，得到喷胶后的纺粘无纺布，将喷胶后的纺粘无纺布与熔喷无纺布进行复合，得到SM无纺布。
实施例2
一种卫生材料用SM材料的制备方法，具体为：
1.制备纺粘无纺布：将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为69:4:11:3:2投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布浸入改性液中，在32℃下静置22min，得到浸泡后的初级纺粘无纺布，然后将浸泡后的初级纺粘无纺布置于52℃干燥47min，得到纺粘无纺布；
所述PP料的MFR范围为37g/10min；
所述熔喷PP料的MFR范围为1600g/10min；
所述改性填料的制备方法为：将微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠加入球磨机中进行球磨，控制球磨时的球料比为11:1，转速为330rpm，时间为32min，球磨结束进行紫外-超声处理，控制紫外-超声处理中紫外灯的功率为310W，紫外灯中心波长为350nm，超声波的输出功率为390W，紫外-超声处理时间为22min，紫外-超声处理结束，得到改性填料；
其中，微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠的重量比为4:19:4:5:1.5；
所述纳米碳酸钙的粒径为70nm；
所述改性液的组成，按重量份计，包括：4份聚乙烯醇，3份聚乙烯吡咯烷酮，1.5份明矾，0.2份聚乙烯亚胺，32份去离子水；
其中，初级纺粘无纺布与改性液的重量比为1:2.2。
2.制备熔喷无纺布：将熔喷PP料、聚乙烯蜡、纳米电气石粉、包覆粉末按照重量比为72:3:7:6投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量后，经热气流超倍牵伸后，纤维冷却固化沉积于集网装置上，收卷成网，即得到熔喷无纺布；
所述包覆粉末的制备方法为：将纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼混合后加入球磨机中进行球磨，控制球磨时的球料比为11:1，转速为310rpm，时间为32min，球磨结束后得到混合粉，将混合粉置于包裹液中，进行超声震荡，控制超声震荡的频率为35kHz，功率为350W，时间为32min，超声震荡结束，得到浆料，将浆料置于72℃下烘至质量不再发生变化，得到包覆粉末；
其中，纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼的重量比为23:4:5:3；
其中，混合粉与包裹液的重量比为10:3.5；
所述包裹液的组成，按重量份计，包括：3份硅烷偶联剂KH540，2份阿拉伯胶，1.5份1,2-丙二醇，2份葡聚糖，13份去离子水。
所述纳米氧化铝的粒径为190nm；
所述纳米氮化硼的粒径为90nm；
所述熔喷PP料的MFR范围为1300g/10min；
所述纳米电气石粉的粒径为110nm。
3.制备改性液：将透明质酸、山梨酸、硝酸银、十二烷基二甲基甜菜碱、甲酸、明胶、去离子水按照重量比为6:1.5:0.4:1.7:5:1.5:37混合均匀，在52℃下以110rpm的搅拌速度搅拌22min，得到初级改性液，对初级改性液进行微波改性，控制微波改性的功率为420W，时间为5min，微波改性结束得到改性液；
所述透明质酸的重均分子量为110万。
4.复合：所述复合，将改性液喷淋至纺粘无纺布，控制喷淋速度为210mL/min，改性液的用量为310mL/m2，喷淋结束后置于42℃下干燥1.7h，得到喷淋后的纺粘无纺布，然后向喷淋后的纺粘无纺布喷热熔胶，控制热熔胶的上胶量为4g/m，得到喷胶后的纺粘无纺布，将喷胶后的纺粘无纺布与熔喷无纺布进行复合，得到SM无纺布。
实施例3
一种卫生材料用SM材料的制备方法，具体为：
1.制备纺粘无纺布：将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为70:5:12:4:3投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布浸入改性液中，在35℃下静置25min，得到浸泡后的初级纺粘无纺布，然后将浸泡后的初级纺粘无纺布置于55℃干燥50min，得到纺粘无纺布；
所述PP料的MFR范围为40g/10min；
所述熔喷PP料的MFR范围为1800g/10min；
所述改性填料的制备方法为：将微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠加入球磨机中进行球磨，控制球磨时的球料比为12:1，转速为350rpm，时间为35min，球磨结束进行紫外-超声处理，控制紫外-超声处理中紫外灯的功率为320W，紫外灯中心波长为360nm，超声波的输出功率为400W，紫外-超声处理时间为25min，紫外-超声处理结束，得到改性填料；
其中，微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠的重量比为5:20:7:6:2；
所述纳米碳酸钙的粒径为80nm；
所述改性液的组成，按重量份计，包括：5份聚乙烯醇，4份聚乙烯吡咯烷酮，2份明矾，0.3份聚乙烯亚胺，35份去离子水；
其中，初级纺粘无纺布与改性液的重量比为1:2.3。
2.制备熔喷无纺布：将熔喷PP料、聚乙烯蜡、纳米电气石粉、包覆粉末按照重量比为75:4:9:8投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量后，经热气流超倍牵伸后，纤维冷却固化沉积于集网装置上，收卷成网，即得到熔喷无纺布；
所述包覆粉末的制备方法为：将纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼混合后加入球磨机中进行球磨，控制球磨时的球料比为12:1，转速为320rpm，时间为35min，球磨结束后得到混合粉，将混合粉置于包裹液中，进行超声震荡，控制超声震荡的频率为40kHz，功率为400W，时间为35min，超声震荡结束，得到浆料，将浆料置于75℃下烘至质量不再发生变化，得到包覆粉末；
其中，纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼的重量比为25:5:6:4；
其中，混合粉与包裹液的重量比为10:4；
所述包裹液的组成，按重量份计，包括：4份硅烷偶联剂KH540，3份阿拉伯胶，2份1,2-丙二醇，3份葡聚糖，15份去离子水。
所述纳米氧化铝的粒径为200nm；
所述纳米氮化硼的粒径为100nm；
所述熔喷PP料的MFR范围为1400g/10min；
所述纳米电气石粉的粒径为120nm。
3.制备改性液：将透明质酸、山梨酸、硝酸银、十二烷基二甲基甜菜碱、甲酸、明胶、去离子水按照重量比为7:2:0.5:2:6:2:38混合均匀，在55℃下以120rpm的搅拌速度搅拌25min，得到初级改性液，对初级改性液进行微波改性，控制微波改性的功率为450W，时间为6min，微波改性结束得到改性液；
所述透明质酸的重均分子量为120万。
4.复合：所述复合，将改性液喷淋至纺粘无纺布，控制喷淋速度为220mL/min，改性液的用量为320mL/m2，喷淋结束后置于45℃下干燥2h，得到喷淋后的纺粘无纺布，然后向喷淋后的纺粘无纺布喷热熔胶，控制热熔胶的上胶量为5g/m，得到喷胶后的纺粘无纺布，将喷胶后的纺粘无纺布与熔喷无纺布进行复合，得到SM无纺布。
对比例1
采用实施例1所述的卫生材料用SM材料的制备方法，其不同之处在于：第1步制备纺粘无纺布步骤中使用纳米碳酸钙代替改性填料。
对比例2
采用实施例1所述的卫生材料用SM材料的制备方法，其不同之处在于：第2步制备熔喷无纺布步骤中省略包覆粉末的加入。
对比例3
采用实施例1所述的卫生材料用SM材料的制备方法，其不同之处在于：省略第3步制备改性液，及第4步复合步骤中省略将改性液喷淋至纺粘无纺布，即直接对纺粘无纺布喷热熔胶后，与熔喷无纺布复合。
对比例4
采用实施例1所述的卫生材料用SM材料的制备方法中第2步制备熔喷无纺布步骤制备的熔喷无纺布。
试验例1
对实施例1-3和对比例1-3制备的卫生材料用SM材料的透气均值、水蒸气透过量、抓取强度、撕裂强度、柔软度、CV值进行测试，测试结果如下：
除非另有说明，本发明中所采用的百分数均为质量百分数。
最后应说明的是：以上所述仅为本发明的优选实施例而已，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (4)

1.一种卫生材料用SM材料的制备方法，其特征在于，包括：制备纺粘无纺布，制备熔喷无纺布，制备改性液，复合；
所述制备纺粘无纺布，将PP料、熔喷PP料、改性填料、氧化聚乙烯蜡、白油按照重量比为68-70:3-5:10-12:2-4:1-3投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量、纺丝、冷却、气流牵引、成网、热轧粘合后得到初级纺粘无纺布，然后将初级纺粘无纺布浸入改性液中，在30-35℃下静置20-25min，得到浸泡后的初级纺粘无纺布，然后将浸泡后的初级纺粘无纺布置于50-55℃干燥45-50min，得到纺粘无纺布；
所述改性填料的制备方法为：将微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠加入球磨机中进行球磨，控制球磨时的球料比为10-12:1，转速为320-350rpm，时间为30-35min，球磨结束进行紫外-超声处理，控制紫外-超声处理中紫外灯的功率为300-320W，紫外灯中心波长为340-360nm，超声波的输出功率为380-400W，紫外-超声处理时间为20-25min，紫外-超声处理结束，得到改性填料；
所述改性填料的制备中，微细二氧化硅气凝胶、纳米碳酸钙、三聚氰胺、木质素磺酸钠、十二烷基苯磺酸钠的重量比为3-5:18-20:3-7:4-6:1-2；
所述改性填料的制备中，所述纳米碳酸钙的粒径为50-80nm；
所述制备纺粘无纺布中，所述改性液的组成，按重量份计，包括：3-5份聚乙烯醇，2-4份聚乙烯吡咯烷酮，1-2份明矾，0.1-0.3份聚乙烯亚胺，30-35份去离子水；
所述制备熔喷无纺布，将熔喷PP料、聚乙烯蜡、纳米电气石粉、包覆粉末按照重量比为70-75:2-4:6-9:5-8投入混料机中，经过混料后，进行熔融挤压、熔体过滤、熔体计量后，经热气流超倍牵伸后，纤维冷却固化沉积于集网装置上，收卷成网，即得到熔喷无纺布；
所述包覆粉末的制备方法为：将纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼混合后加入球磨机中进行球磨，控制球磨时的球料比为10-12:1，转速为300-320rpm，时间为30-35min，球磨结束后得到混合粉，将混合粉置于包裹液中，进行超声震荡，控制超声震荡的频率为30-40kHz，功率为300-400W，时间为30-35min，超声震荡结束，得到浆料，将浆料置于70-75℃下烘至质量不再发生变化，得到包覆粉末；
所述包覆粉末的制备中，纳米氧化铝、黄原胶、聚乙二醇1500、纳米氮化硼的重量比为22-25:3-5:4-6:2-4；
所述包覆粉末的制备中，混合粉与包裹液的重量比为10:3-4；
所述包裹液的组成，按重量份计，包括：2-4份硅烷偶联剂KH540，1-3份阿拉伯胶，1-2份1,2-丙二醇，1.5-3份葡聚糖，12-15份去离子水；
所述包覆粉末的制备中，所述纳米氧化铝的粒径为180-200nm；
所述包覆粉末的制备中，所述纳米氮化硼的粒径为80-100nm；
所述制备改性液，将透明质酸、山梨酸、硝酸银、十二烷基二甲基甜菜碱、甲酸、明胶、去离子水按照重量比为5-7:1-2:0.3-0.5:1.5-2:4-6:1-2:36-38混合均匀，在50-55℃下以100-120rpm的搅拌速度搅拌20-25min，得到初级改性液，对初级改性液进行微波改性，控制微波改性的功率为400-450W，时间为4-6min，微波改性结束得到改性液；
所述制备改性液中，所述透明质酸的重均分子量为100-120万；
所述复合，将改性液喷淋至纺粘无纺布，控制喷淋速度为200-220mL/min，改性液的用量为300-320mL/m2，喷淋结束后置于40-45℃下干燥1.5-2h，得到喷淋后的纺粘无纺布，然后向喷淋后的纺粘无纺布喷热熔胶，控制热熔胶的上胶量为3-5g/m，得到喷胶后的纺粘无纺布，将喷胶后的纺粘无纺布与熔喷无纺布进行复合，得到SM材料。
2.根据权利要求1所述的卫生材料用SM材料的制备方法，其特征在于，所述制备纺粘无纺布中，所述PP料的MFR范围为35-40g/10min；
所述制备纺粘无纺布中，所述熔喷PP料的MFR范围为1500-1800g/10min。
3.根据权利要求1所述的卫生材料用SM材料的制备方法，其特征在于，所述制备纺粘无纺布中，初级纺粘无纺布与改性液的重量比为1:2-2.3。
4.根据权利要求1所述的卫生材料用SM材料的制备方法，其特征在于，所述制备熔喷无纺布中，所述熔喷PP料的MFR范围为1200-1400g/10min；
所述制备熔喷无纺布中，所述纳米电气石粉的粒径为100-120nm。
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