CN102747457A - 一种疏水阻燃纤维及其制造方法 - Google Patents
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Abstract
本发明公开一种疏水阻燃纤维及其制造方法。该纤维的皮、芯体积比为2∶8—6∶4,其特征在于该纤维皮层料质量百分比组成为:PET79.9-88.8%、PVDF8—13%,阻燃剂3-6%、相容剂0.1—0.5%、偶联剂0.1—0.6%;相容剂为丙烯酸酯接枝聚烯烃弹性体和马来酸酐接枝聚烯烃弹性体中的一种;该纤维芯层料质量百分比组成为:PET91—95%、阻燃剂5—9%;阻燃剂均为聚苯磷酸双酚砜酯、芳基聚磷酸酯、聚对亚苯基苯基磷酸酯和聚对二苯砜苯基磷酸酯中的一种。该纤维制造方法采用下述工艺:1.制造阻燃切片;2.制造纤维皮层料;3.制造纤维芯层料;4.制造皮芯复合疏水阻燃纤维。
Description
技术领域
本发明涉及功能性化学纤维技术,具体为一种疏水阻燃纤维及其制造方法。
背景技术
疏水阻燃纤维是一种具有一定疏水和阻燃性能的功能纤维。对于疏水阻燃纤维已有专利文献报道,例如,中国专利文献CN101143923公开了一种用于防雨布的拒水聚酯纤维,其特征是在精对苯二甲酸和乙二醇聚合制浆时加入B型添加剂硅酮或二聚酸制取拒水聚酯,再用该聚酯纺丝,通过异形喷丝板(喷丝孔截面呈方型),制得具有方型截面拒水纤维。该种纤维虽然具有疏水作用,但没有阻燃功能。中国专利文献CN102337667A公开了一种具有阻燃拒水功能的含有阻燃聚酯纤维的纺织品及其生产方法,该纺织品中溴元素的含量≤5μg/g,氟元素的含量≤5μg/g。该纺织品采用非卤素阻燃加工剂及非氟素拒水加工剂进行功能性整理加工制得。由于该种织物是通过整理加工制得的,因此一方面织物的手感差,而且不耐洗,功能整理剂容易脱落。中国专利文献CN101787579A公开一种阻燃聚酯纤维及其制备方法和装置,该阻燃聚酯纤维为内外两层结构,内层为添加有阻燃剂的PET树脂,外层为PET树脂。该行为由于皮或外层原料为普通涤纶,因而不具备疏水性能,而且由于阻燃剂添加在纤维的内层,不利于阻燃性能的发挥。
发明内容
针对现有技术的不足,本发明拟解决的技术问题是,提供一种疏水阻燃纤维及其制造方法。该纤维同时具有良好的疏水性能和阻燃性能,具有耐水洗,功能持久,同时手感好,适于纺织和服用。该纤维制造方法采用皮芯复合纺丝技术,可使纤维的两种功能互补并得到加强,同时工艺简单,适于工业化实施推广。
本发明解决所述纤维技术问题的技术方案是:设计一种疏水阻燃纤维,具有皮芯结构,皮、芯体积比为2∶8—6∶4,其特征在于该纤维皮层料的质量百分比组成为:聚对苯二甲酸乙二醇酯79.9-88.8%、聚偏氟聚乙烯8—13%,阻燃剂3-6%、相容剂0.1—0.5%、偶联剂0.1—0.6%;所述聚偏氟聚乙烯的熔融指数MI=18-45;所述相容剂为丙烯酸酯接枝聚烯烃弹性体和马来酸酐接枝聚烯烃弹性体中的一种;所述偶联剂为三异硬脂酰基钛酸异丙酯、三(十二烷基苯磺酰基)钛酸异丙酯、三(二辛磷酰氧基)钛酸异丙酯和三(二辛基焦磷酰氧基)钛酸异丙酯的一种与石蜡1:1质量比的混合物;该纤维芯层料的质量百分比组成为:聚对苯二甲酸乙二醇酯91—95%、阻燃剂5—9%;皮层料和芯层料中所述的阻燃剂均为聚苯磷酸双酚砜酯、芳基聚磷酸酯、聚对亚苯基苯基磷酸酯和聚对二苯砜苯基磷酸酯中的一种。
本发明解决所述制造方法技术问题的技术方案是:设计一种疏水阻燃纤维制造方法,该制造方法采用本发明所述的疏水阻燃纤维质量百分比组成和下述工艺:
(1). 制造阻燃切片;把皮层料中所述的阻燃剂和干燥的部分聚对苯二甲酸乙二醇酯均匀混合后,在255-260℃温度下,经双螺杆机挤出,造粒,获得阻燃切片;阻燃切片中阻燃剂的质量含量为6-9%;
(2).制造疏水阻燃纤维皮层料:把皮层料中的聚偏氟聚乙烯、所得的阻燃切片和制造阻燃切片余下的聚对苯二甲酸乙二醇酯干燥后,与相容剂、偶联剂按所述皮层料质量百分比组成均匀混合,在255-260℃温度下,经双螺杆机挤出,造粒,即获得疏水阻燃纤维皮层料;
(3).制造疏水阻燃纤维芯层料:按所述芯层料重量百分比组成,把所述聚对苯二甲酸乙二醇酯与阻燃剂均匀混合后,在 260--265℃温度下,经双螺杆机挤出,造粒,即获得疏水阻燃纤维芯层料;
(4).制造皮芯复合疏水阻燃纤维:将上述(2)、(3)步所得的皮层料和芯层料,按2∶8—6∶4的纤维皮、芯体积比,用皮芯复合纺丝机纺出卷绕丝,经拉伸后,制成纤维长丝,即得到所述的疏水阻燃纤维。
与现有技术相比,本发明疏水阻燃纤维既具有良好的疏水性能,又具有阻燃功能。本发明设计的疏水阻燃纤维皮层料含有聚偏氟聚乙烯和阻燃剂,会具有永久的疏水和一定的阻燃作用;而纤维的芯层料因含有阻燃剂而具有永久阻燃功能,实现本发明的主要目的。另外,本发明疏水阻燃纤维由于是各种添加材料与聚合物熔融混合后纺制的纤维,因此,与涂层织物相比,具有耐水洗和手感好等特点,更适于纺织和服用。本发明疏水阻燃纤维制造方法是将两种不同功能的混合料纺制成具有皮芯复合结构的纤维,使制造的纤维具有疏水和阻燃双重功能,实现两种功能既独立、不干扰,且又互补的特点,而所采用的复合纺丝技术,容易工业化生产,制造成本比较低。
具体实施方式
下面结合实施例进一步叙述本发明:
本发明设计的疏水阻燃纤维(简称纤维),具有皮芯复合结构,皮、芯体积比为2∶8—6∶4,其特征在于该纤维皮层料的质量百分比组成为:聚对苯二甲酸乙二醇酯(PET)79.9-88.8%、聚偏氟聚乙烯(PVDF)8—13%,阻燃剂3-6%、相容剂0.1—0.5%、偶联剂0.1—0.6%;各组分之和为100%;该纤维芯层料的质量百分比组成为:聚对苯二甲酸乙二醇酯(PET)91—95%、阻燃剂5—9%,各组分之和为100%。
本发明纤维皮层料中所述的PET和芯层料中所述的PET为同一种聚合物,都是常规的聚对苯二甲酸乙二醇酯。但皮层料中还混有另一种聚合物PVDF。所述PVDF的熔融指数MI=18-45。
本发明纤维皮层料中所述的阻燃剂为聚苯磷酸双酚砜酯、芳基聚磷酸酯、聚对亚苯基苯基磷酸酯和聚对二苯砜苯基磷酸酯的一种。
本发明纤维皮层料中所述的相容剂为丙烯酸酯接枝聚烯烃弹性体和马来酸酐接枝聚烯烃弹性体中的一种。
本发明纤维皮层料中所述的偶联剂为三异硬脂酰基钛酸异丙酯、三(十二烷基苯磺酰基)钛酸异丙酯、三(二辛磷酰氧基)钛酸异丙酯和三(二辛基焦磷酰氧基)钛酸异丙酯一种与石蜡1:1的混合物。
本发明纤维芯层料所述的阻燃剂为聚苯磷酸双酚砜酯、芳基聚磷酸酯、聚对亚苯基苯基磷酸酯和聚对二苯砜苯基磷酸酯的一种,即与皮层料中所述的阻燃剂一样。
本发明同时设计了疏水阻燃纤维的制造方法(简称制造方法),该制造方法采用本发明所述疏水阻燃纤维质量百分比组成和下述工艺:
1. 制造阻燃切片;把皮层料中所述的阻燃剂和干燥的部分聚对苯二甲酸乙二醇酯均匀混合后,在255-260℃温度下,经双螺杆机挤出,造粒,获得阻燃切片;所述阻燃切片中阻燃剂的质量含量为6-9%;
2. 制造疏水阻燃纤维皮层料: 按照所述皮层料质量百分比组成,把另一部分(制造阻燃切片余下的)PET、PVDF和所得阻燃切片干燥后,与所述的相容剂、偶联剂均匀混合后,在255-260℃温度下,经双螺杆机挤出,造粒后,获得疏水阻燃纤维皮层料;
本发明纤维皮层料中的阻燃切片是由部分PET和所述比例的阻燃剂混和后,通过熔融造粒制备的;阻燃切片中阻燃剂的质量含量为6-9%。制造阻燃切片余下的另一部分PET干燥后,用于制造皮层料。两部分PET之和构成皮层料中所述比例的PET。采用先制造阻燃切片再与其他原料混合是为了使物料混合更加均匀。
3.制造疏水阻燃纤维芯层料:按照所述芯层料重量百分比组成,把所述PET和阻燃剂均匀混合后,在 260-265℃温度下,经双螺杆机挤出,造粒,获得疏水阻燃纤维芯层料;
4.制造皮芯复合疏水阻燃纤维:将上述(2)、(3)步所得的皮层料和芯层料,按2∶8—6∶4的纤维皮、芯体积比,用皮芯复合纺丝机纺出卷绕丝,经拉伸后,制成纤维长丝,即得到本发明所述的疏水阻燃纤维。
所述的皮芯体积比关系到纤维的阻燃性能。如果纤维的皮层比例过大,芯层比例太小,纤维芯层阻燃作用不明显,影响纤维阻燃效果;反之,如果纤维的皮层比例过小,芯层比例太大,这将会影响纤维的疏水性能,因此要求皮芯层体积比控制在所述的范围内,但优选的皮芯体积比为3∶7—5∶5。所述的拉伸为公知拉伸或常规拉伸,一般拉伸3-5倍。经检测,本发明纤维的疏水角为86-90度,极限氧指数为27-29,因此称之为疏水阻燃纤维。该纤维的强力等一般物理指标也满足常规纺织要求。
本发明未述及之处适用于现有技术。
以下给出本发明的几个具体实施例。具体实施例仅是对本发明技术方案的进一步具体说明,不限制本申请权利要求的保护范围。
实施例1
取干燥后的PET 60.7公斤,聚苯磷酸双酚砜酯6公斤,经充分混合后, 在255℃下经双螺杆机挤出,制备出66.7公斤阻燃切片。
然后取干燥后的PET 19.2 公斤、熔融指数45的PVDF 13公斤,干燥后的所得阻燃切片66.7公斤,丙烯酸酯接枝聚烯烃弹性体0.5公斤,三异硬脂酰基钛酸异丙酯0.3公斤,石蜡0.3公斤,经充分混合后, 在255℃下经双螺杆机挤出,造粒,制造出纤维皮层料;取干燥后的PET 91公斤, 聚苯磷酸双酚砜酯9公斤,经充分混合后, 在260℃下经双螺杆机挤出,造粒,制造出纤维芯层料;将所得皮芯料充分烘干后,按2∶8的纤维皮、芯体积比用皮芯复合纺丝机纺制出卷绕丝,再将所得的卷绕丝在120℃温度下拉伸3倍,得到成品疏水阻燃纤维长丝。
经检测,该纤维的疏水角度为90度, 极限氧指数为29。
实施例2
取干燥后的PET 47公斤,芳基聚磷酸酯 3公斤,经充分混合后, 在260℃下经双螺杆机挤出,制备出50公斤阻燃切片。
然后取干燥后的PET 41.8 公斤、熔融指数18的聚偏氟聚乙烯(PVDF)8公斤,干燥后的阻燃切片50公斤,马来酸酐接枝聚烯烃弹性体0.1公斤,三(十二烷基苯磺酰基)钛酸异丙酯0.05公斤,石蜡0.05公斤,经充分混合后, 在260℃下经双螺杆机挤出,造粒,制造出纤维皮层料;取干燥后的PET 95公斤, 芳基聚磷酸酯5公斤,经充分混合后, 在265℃下经双螺杆机挤出,造粒,制造出纤维芯层料;将所得皮芯料充分烘干后,按6∶4的纤维皮、芯体积比用皮芯复合纺丝机纺制出卷绕丝,再将所得的卷绕丝在120℃温度下拉伸3.5倍,得到成品疏水阻燃纤维长丝。
经检测,该纤维的疏水角度为86度, 极限氧指数27。
实施例3
取干燥后的PET 57.5公斤,聚对亚苯基苯基磷酸酯5公斤,经充分混合后, 在255℃下经双螺杆机挤出,制备出62.5公斤阻燃切片。
然后取干燥后的PET 24.6公斤、 熔融指数35的PVDF 12公斤,干燥后的所得阻燃切片62.5公斤,丙烯酸酯接枝聚烯烃弹性体0.4公斤,三(二辛磷酰氧基)钛酸异丙酯0.25公斤,石蜡0.25公斤,经充分混合后, 在255℃下经双螺杆机挤出,造粒,制造出纤维皮层料;取干燥后的PET 92公斤, 聚苯磷酸双酚砜酯8公斤,经充分混合后, 在260℃下经双螺杆机挤出,造粒,制造出纤维芯层料;将所得皮芯料充分烘干后,按3∶7的纤维皮、芯体积比用皮芯复合纺丝机纺制出卷绕丝,再将所得的卷绕丝在120℃温度下拉伸4倍,得到成品疏水阻燃纤维长丝。
经检测,该纤维的疏水角度为89度, 极限氧指数为29。
实施例4
取干燥后的PET 53.2公斤,聚对二苯砜苯基磷酸酯4公斤,经充分混合后, 在255℃下经双螺杆机挤出,制备出57.2公斤阻燃切片。
然后取干燥后的PET 32.1公斤、 熔融指数30的PVDF10公斤,干燥后的所得阻燃切片57.2份,马来酸酐接枝聚烯烃弹性体0.3公斤,三(二辛基焦磷酰氧基)钛酸异丙酯0.2公斤,石蜡0.2公斤,经充分混合后, 在255℃下经双螺杆机挤出,造粒,制造出纤维皮层料;取干燥后的PET 91公斤, 聚苯磷酸双酚砜酯9公斤,经充分混合后, 在265℃下经双螺杆机挤出,造粒,制造出纤维芯层料;将所得皮芯料充分烘干后,按4∶6的纤维皮、芯体积比用皮芯复合纺丝机纺制出卷绕丝,再将所得的卷绕丝在120℃温度下拉伸4.5倍,得到疏水阻燃纤维长丝。
经检测,该纤维长丝的疏水角度为88度, 极限氧指数为28。
实施例5
取干燥后的PET 62.7公斤,聚苯磷酸双酚砜酯4公斤,经充分混合后, 在260℃下经双螺杆机挤出,制备出66.7公斤阻燃切片。
然后取干燥后的PET 23.8公斤、 熔融指数25的PVDF 9公斤,干燥后的阻燃切片66.7公斤,丙烯酸酯接枝聚烯烃弹性体0.2公斤,三异硬脂酰基钛酸异丙酯0.15公斤,石蜡0.15公斤,经充分混合后, 在255℃下经双螺杆机挤出,造粒,制造出纤维皮层料;取干燥后的PET 92公斤, 聚苯磷酸双酚砜酯8公斤,经充分混合后, 在265℃下经双螺杆机挤出,造粒,制造出纤维芯层料;将所得皮芯料充分烘干后,按5∶5的纤维皮、芯体积比用皮芯复合纺丝机纺制出卷绕丝,再将所得的卷绕丝在120℃温度下拉伸5倍,得到疏水阻燃纤维长丝。
经检测,该纤长丝维的疏水角度为87度, 极限氧指数为28。
Claims (3)
1.一种疏水阻燃纤维,具有皮芯结构,皮、芯体积比为2∶8—6∶4,其特征在于该纤维皮层料的质量百分比组成为:聚对苯二甲酸乙二醇酯 79.9—88.8%、聚偏氟聚乙烯8—13%,阻燃剂3—6%、相容剂0.1—0.5%、偶联剂0.1—0.6%;所述聚偏氟聚乙烯的熔融指数MI=18-45;所述相容剂为丙烯酸酯接枝聚烯烃弹性体和马来酸酐接枝聚烯烃弹性体中的一种;所述偶联剂为三异硬脂酰基钛酸异丙酯、三(十二烷基苯磺酰基)钛酸异丙酯、三(二辛磷酰氧基)钛酸异丙酯和三(二辛基焦磷酰氧基)钛酸异丙酯的一种与石蜡1:1质量比的混合物;该纤维芯层料的质量百分比组成为:聚对苯二甲酸乙二醇酯91—95%、阻燃剂5—9%;皮层料和芯层料中所述的阻燃剂均为聚苯磷酸双酚砜酯、芳基聚磷酸酯、聚对亚苯基苯基磷酸酯和聚对二苯砜苯基磷酸酯中的一种。
2. 根据权利要求1所述的疏水阻燃纤维,其特征在于所述的皮、芯体积比为3∶7—5∶5。
3.一种疏水阻燃纤维制造方法,该制造方法采用权利要求1或2所述的疏水阻燃纤维质量百分比组成和下述工艺:
(1) 制造阻燃切片;把皮层料中所述的阻燃剂和干燥的部分聚对苯二甲酸乙二醇酯均匀混合后,在255-260℃温度下,经双螺杆机挤出,造粒,获得阻燃切片;阻燃切片中阻燃剂的质量含量为6-9%;
(2).制造疏水阻燃纤维皮层料:把皮层料中的聚偏氟聚乙烯、所得的阻燃切片和制造阻燃切片余下的聚对苯二甲酸乙二醇酯干燥后,与相容剂、偶联剂按所述皮层料质量百分比组成均匀混合,在255-260℃温度下,经双螺杆机挤出,造粒,即获得疏水阻燃纤维皮层料;
(3).制造疏水阻燃纤维芯层料:按所述芯层料重量百分比组成,把所述聚对苯二甲酸乙二醇酯与阻燃剂均匀混合后,在 260--265℃温度下,经双螺杆机挤出,造粒,即获得疏水阻燃纤维芯层料;
(4).制造皮芯复合疏水阻燃纤维:将上述(2)、(3)步所得的皮层料和芯层料,按2∶8—6∶4的纤维皮、芯体积比,用皮芯复合纺丝机纺出卷绕丝,经拉伸后,制成纤维长丝,即得到所述的疏水阻燃纤维。
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CN105541149A (zh) * | 2015-12-08 | 2016-05-04 | 余姚市交通规划设计研究院 | 一种用于沥青路面面层的改性同芯复合细纤维及应用 |
CN106366518A (zh) * | 2016-08-30 | 2017-02-01 | 常熟三爱富振氟新材料有限公司 | Pvdf内牙咀 |
CN107142596A (zh) * | 2017-06-24 | 2017-09-08 | 海宁和心家居有限公司 | 健康环保型负氧离子阻燃复合功能大提花窗帘面料 |
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