CN111235686A - 复合超短纤维及其制备方法 - Google Patents
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- 239000000835 fiber Substances 0.000 title claims abstract description 49
- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title description 5
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 44
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 44
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 12
- 239000010936 titanium Substances 0.000 claims abstract description 12
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000009987 spinning Methods 0.000 claims description 11
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 10
- 238000005886 esterification reaction Methods 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000006068 polycondensation reaction Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 5
- 239000003999 initiator Substances 0.000 claims description 5
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 4
- 239000007795 chemical reaction product Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000032050 esterification Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000010410 layer Substances 0.000 abstract description 8
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 6
- 239000012792 core layer Substances 0.000 abstract description 3
- 229920005672 polyolefin resin Polymers 0.000 abstract description 2
- 239000011162 core material Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- 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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
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- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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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
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/10—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one other macromolecular compound obtained by reactions only involving carbon-to-carbon unsaturated bonds as constituent
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- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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Abstract
本发明公开了一种复合超短纤维,为皮芯结构,皮层为HDPE、改性HDPE混合而成,芯层为PET,其特征在于:所述改性HDPE为马来酸酐接枝HDPE。并公开了其制备方法。本发明用马来酸酐接株HDPE,可提高聚烯烃树脂和各种基材的粘结性,并提高HDPE马来酸酐接株率,减少改性HDPE在双组份复合超短纤维内的使用量比例,进一步提高纤维的粘合能力。本发明采用在线添加技术,通过调整钛系催化剂聚合工艺,改善HDPE熔体粘结性能等方法,保证了皮层具有良好的粘合性能,制得具有较高的拉伸强度和粘结性能的复合超短纤维。该短纤维可提高纤维皮层与芯层、皮层与木浆,以及纤维间的粘合性能,从而在提高质量的同时,降低成本。
Description
技术领域
本发明专利涉及皮芯复合纤维,尤其涉及一种复合超短纤维、其制备方法及其在卫生材料上的应用。
背景技术
用干法生产无尘纸(非织造布)时,所用材料为木浆,仅用少量超短纤维要使木浆能粘结为纸,且具有一定的力学性能,以及柔软的手感,对超短纤维的要求比较高,要求纤维具有较高的拉伸强度和粘结性能。
发明内容
针对上述问题,本发明提供了一种复合超短纤维,具有较高的拉伸强度和粘结性能。
为达到上述目的,本发明采用的技术方案为:一种复合超短纤维,为皮芯结构,皮层为HDPE、改性HDPE混合而成,芯层为PET,其特征在于:所述改性HDPE为马来酸酐接枝HDPE。
优选的,所述改性HDPE比例为HDPE组份总量的10~20%。组份总量是指改性HDPE+未改性HDPE。
优选的,所述马来酸酐接枝的引发剂为过氧化二异丙苯,含量为0.3PPM,马来酸酐接株率为0.7~1.2wt%。
优选的,所述HDPE密度0.96g/cm3,流动速率17.0~23.0g/min,熔点130~134℃。
本发明还公共了上述的复合超短纤维的制备方法,其步骤包括:
1)HDPE熔融挤出,同时HDPE、MAH单体、引发剂充分混合,然后混合物加入双螺杆挤压机进行熔融挤出,并经过滤后,计量汇入HDPE熔体中,混合均匀后进入纺丝箱体A;
2)将精对苯二甲酸与乙二醇按比例调配,加入钛系催化剂后进行酯化反应,酯化反应产物送入预缩反应釜进行预缩反应,同时,在齐聚物管道上用注射器加入钛系催化剂,经过预缩反应的物料进入终聚釜,进行终缩聚反应,终缩聚产物计量后进入纺丝箱体B;
3)两种熔体经复合喷丝组件喷出成皮芯结构的纤维,冷却成型后上油,然后卷绕、拉伸、切断,制成复超短纤维。
优选的,步骤1)中HDPE熔融挤压温度为245~275℃,马来酸酐与HDPE混合物熔融挤压温度为280~290℃。
优选的,步骤2)中精对苯二甲酸与乙二醇的摩尔比1.1~1.5,酯化反应温度260~270℃,相对压力0.07MPa;预缩聚控制料温265~275℃,反应压力10~30Kpa;终聚釜反应料温270~280℃,真空不低于200Pa;钛系催化剂占聚酯重量的4~6PPM,酯化过程和缩聚过程中添加钛系催化剂的比例为3:7~7.3。
优选的,步骤3)中,两种熔体重量的比为HDPE:PET=60:40,纺丝成型温度287~297℃,冷却温度33~37℃,丝束冷却距离600~1000mm,上油给湿率24~32%。
本发明还公开了上述的复合超短纤维在作为卫生材料上的应用。
有益效果:
本发明用马来酸酐接株HDPE,HDPE经马来酸酐接株后,可以改善与无机填料的亲和性,也可提高与不相容或相容性差的相容性,还可以增加与高分子等材料的粘合力,提高聚烯烃树脂和各种基材的粘结性,并提高HDPE马来酸酐接株率,减少改性HDPE在双组份复合超短纤维内的使用量比例,进一步提高纤维的粘合能力。本发明采用在线添加技术,通过调整钛系催化剂聚合工艺,改善HDPE熔体粘结性能等方法,保证了皮层具有良好的粘合性能,同时PET芯材具有一定强度,制得具有较高的拉伸强度和粘结性能的复合超短纤维。该超短纤维在与木浆混合成网过程中,施以热风,可提高纤维皮层与芯层、皮层与木浆,以及纤维间的粘合性能,从而在提高质量的同时,降低成本。
具体实施方式
实施例1-3
本复合超短纤维的制备方法,其步骤包括:
1)HDPE熔融挤出,同时HDPE、MAH单体、引发剂充分混合,然后混合物加入双螺杆挤压机进行熔融挤出,并经过滤后,计量汇入HDPE熔体中,混合均匀后进入纺丝箱体A;
2)将精对苯二甲酸与乙二醇按比例调配,加入钛系催化剂后进行酯化反应,酯化反应产物送入预缩反应釜进行预缩反应,同时,在齐聚物管道上用注射器加入钛系催化剂,经过预缩反应的物料进入终聚釜,进行终缩聚反应,终缩聚产物计量后进入纺丝箱体B;
3)两种熔体经复合喷丝组件喷出成皮芯结构的纤维,冷却成型后上油,然后卷绕、拉伸、切断,制成复合超短纤维。
对制得的复合超短纤维性能按国家标准进行检测,结果见表1。
表1实施例1-3的参数及检测参数
无尘纸试验
将市售超短纤维和实施例1制得的超短纤维加入木浆中,采用同样的工艺步骤制成无尘纸,对制得的无尘纸进行检测,结果如表2所示。
表2无尘纸试验结果
Claims (9)
1.一种复合超短纤维,为皮芯结构,皮层为HDPE、改性HDPE混合而成,芯层为PET,其特征在于:所述改性HDPE为马来酸酐接枝HDPE。
2.根据权利要求1所述的复合超短纤维,其特征在于:所述改性HDPE比例为HDPE组份总量的10~20%。
3.根据权利要求1或2所述的复合超短纤维,其特征在于:所述马来酸酐接枝的引发剂为过氧化二异丙苯,含量为0.3PPM,马来酸酐接株率为0.7~1.2wt%。
4.根据权利要求3所述的复合超短纤维,其特征在于:所述HDPE密度0.96g/cm3,流动速率17.0~23.0g/min,熔点130~134℃。
5.权利要求1-4中任一项所述的复合超短纤维的制备方法,其步骤包括:
1)HDPE熔融挤出,同时HDPE、MAH单体、引发剂充分混合,然后混合物加入双螺杆挤压机进行熔融挤出,并经过滤后,计量汇入HDPE熔体中,混合均匀后进入纺丝箱体A;
2)将精对苯二甲酸与乙二醇按比例调配,加入钛系催化剂后进行酯化反应,酯化反应产物送入预缩反应釜进行预缩反应,同时,在齐聚物管道上用注射器加入钛系催化剂,经过预缩反应的物料进入终聚釜,进行终缩聚反应,终缩聚产物计量后进入纺丝箱体B;
3)两种熔体经复合喷丝组件喷出成皮芯结构的纤维,冷却成型后上油,然后卷绕、拉伸、切断,制成复合超短纤维。
6.根据权利要求5所述的复合超短纤维的制备方法,其特征在于:步骤1)中HDPE熔融挤压温度为245~275℃,马来酸酐与HDPE混合物熔融挤压温度为280~290℃。
7.根据权利要求6所述的复合超短纤维的制备方法,其特征在于:步骤2)中精对苯二甲酸与乙二醇的摩尔比1.1~1.5,酯化反应温度260~270℃,相对压力0.07MPa;预缩聚控制料温265~275℃,反应压力10~30Kpa;终聚釜反应料温270~280℃,真空不低于200Pa;钛系催化剂占聚酯重量的40~60PPM,酯化过程和缩聚过程中添加钛系催化剂的比例为3:7~7.3。
8.根据权利要求7所述的复合超短纤维的制备方法,其特征在于:步骤3)中,两种熔体重量的比为HDPE:PET=60:40,纺丝成型温度287~297℃,冷却温度33~37℃,丝束冷却距离600~1000mm,上油给湿率24~32%。
9.权利要求1-4中任一项所述的复合超短纤维在作为卫生材料上的应用。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111979600A (zh) * | 2020-08-22 | 2020-11-24 | 江苏江南高纤股份有限公司 | 驻极体复合短纤维及其制备方法 |
| CN114318586A (zh) * | 2022-01-07 | 2022-04-12 | 广东秋盛资源股份有限公司 | 复合纤维材料、制备方法以及针刺非织造布 |
| CN115368547A (zh) * | 2022-07-29 | 2022-11-22 | 浙江恒创先进功能纤维创新中心有限公司 | 一种钛系催化剂在三釜聚酯装置上的产业化应用 |
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| CN109234846A (zh) * | 2018-10-11 | 2019-01-18 | 江苏江南高纤股份有限公司 | 康舒复合短纤维的制备方法 |
| CN109930237A (zh) * | 2017-12-19 | 2019-06-25 | 东丽纤维研究所(中国)有限公司 | 一种芯鞘复合纤维 |
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| CN1259178A (zh) * | 1997-04-08 | 2000-07-05 | 菲伯维森斯公司 | 粘合纤维素的纤维 |
| CN109930237A (zh) * | 2017-12-19 | 2019-06-25 | 东丽纤维研究所(中国)有限公司 | 一种芯鞘复合纤维 |
| CN108716027A (zh) * | 2018-08-31 | 2018-10-30 | 江苏江南高纤股份有限公司 | Pe-pet复合超短纤维的制备方法、应用及后纺系统 |
| CN109234846A (zh) * | 2018-10-11 | 2019-01-18 | 江苏江南高纤股份有限公司 | 康舒复合短纤维的制备方法 |
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| CN114318586A (zh) * | 2022-01-07 | 2022-04-12 | 广东秋盛资源股份有限公司 | 复合纤维材料、制备方法以及针刺非织造布 |
| CN114318586B (zh) * | 2022-01-07 | 2023-12-01 | 广东秋盛资源股份有限公司 | 复合纤维材料、制备方法以及针刺非织造布 |
| CN115368547A (zh) * | 2022-07-29 | 2022-11-22 | 浙江恒创先进功能纤维创新中心有限公司 | 一种钛系催化剂在三釜聚酯装置上的产业化应用 |
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