CN112853561A - 一种阻燃涤纶纱线及其制备方法 - Google Patents
一种阻燃涤纶纱线及其制备方法 Download PDFInfo
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Abstract
本发明涉及功能性涤纶纱线技术领域,特别是涉及一种阻燃涤纶纱线及其制备方法,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为(4~6):1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为15~30%;所述阻燃芯纱为氨纶芯纱上涂覆有阻燃涂层剂。制备方法为将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线。本发明解决现有技术中阻燃剂和涤纶的性能无法兼顾的问题,提供的包纱线通过设计阻燃涤纶鞘纱和阻燃芯纱可以兼顾阻燃性能和包纱线的力学性能。
Description
技术领域
本发明涉及功能性涤纶纱线技术领域,特别是涉及一种阻燃涤纶纱线及其制备方法。
背景技术
涤纶是合成纤维中的一个重要品种,是以聚对苯二甲酸(PTA)或对苯二甲酸二甲酯(DMT)和乙二醇(MEG)为原料经酯化或酯交换和缩聚反应而制得的成纤高聚物--聚对苯二甲酸乙二醇酯(PET),经纺丝和后处理制成的纤维。
涤纶的用途很广,大量用于制造衣着面料和工业制品。涤纶具有极优良的定形性能。涤纶纱线或织物经过定形后生成的平挺、蓬松形态或褶皱等,在使用中经多次洗涤,仍能经久不变。涤纶有结实耐用、弹性好、不易变形、耐腐蚀、绝缘、挺括、易洗快干等特点,为人们所喜爱。
在现有技术中,人们对日用品的安全性要求也随之提高,而涤纶的氧指数在22~24,不仅不具备阻燃效果,且属于易燃物品,容易引发安全隐患。现有技术中阻燃剂的添加量如果在涤纶中添加量太少时阻燃效果不好,如果在涤纶中添加量过多也会导致涤纶的韧性和强度等力学性能大幅度下降。
发明内容
鉴于以上所述现有技术的缺点,本发明的目的在于提供一种阻燃涤纶纱线,用于解决现有技术中阻燃剂和涤纶的性能无法兼顾的问题,同时,本发明还将提供一种阻燃涤纶纱线的制备方法。本发明的包纱线通过设计阻燃涤纶鞘纱和阻燃芯纱可以兼顾阻燃性能和包纱线的力学性能。
为实现上述目的及其他相关目的,
本发明的第一方面,提供一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为(4~6):1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为15~30%;
所述阻燃芯纱为氨纶芯纱上涂覆有阻燃涂层剂;
所述阻燃添加剂包括重量份数的如下组分:20~40份的聚磷酸铵,1~10份的三(2-羟乙基)异氰尿酸酯,1~3份的水合硼酸锌,3~8份的氢氧化铝,3~8份的偶联剂;
所述阻燃涂层剂包括重量份数的如下组分:20~40份的聚磷酸铵,2~8份的三(2-羟乙基)异氰尿酸酯,1~3份的三聚氰胺氰尿酸,3~8份的氢氧化铝,1~5份的偶联剂,3~8份的粘结剂。
阻燃涤纶纱线的鞘纱和芯纱均具有良好的阻燃效果,从而使得阻燃涤纶纱线整体具有良好的阻燃效果。阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维混纺而成,使得阻燃涤纶纱线更加柔软亲肤,从而拓宽其使用范围。氨纶芯纱上涂覆有阻燃涂层剂,使得氨纶芯纱也具有良好的阻燃效果,并且具有一定增强氨纶芯纱力学性能的效果。阻燃添加剂中阻燃剂的主要成分为聚磷酸铵,整体采用无卤阻燃剂,更为绿色环保;通过添加水合硼酸锌和氢氧化铝,可以提高阻燃添加剂的阻燃性能,还能减少燃烧时烟雾的产生,也能避免涤纶燃烧过程中形成熔滴;通过添加偶联剂提高阻燃添加剂整体的均匀度以及对涤纶的附着力。阻燃涂层剂的主要成分与阻燃添加剂相同,阻燃涂层剂中没有采用水合硼酸锌而是采用三聚氰胺氰尿酸,由于氨纶燃烧后灰烬为软蓬松黑灰,因此不添加水合硼酸锌而是选择添加三聚氰胺氰尿酸,此外三聚氰胺氰尿酸也具有更好的阻燃效果。
偶联剂一般采用硅烷偶联剂,如乙烯基三乙氧基硅烷、乙烯基三硅烷、γ-甲基丙烯酸丙酯基三甲氧基硅烷、γ-胺丙基三乙氧基硅烷、N-β-(胺乙基)-γ-胺丙基-三甲氧基硅烷、β-(3,4-氧撑环己基)-乙基三甲氧基硅烷、γ-缩水甘油氧丙基三甲氧基硅烷、γ-脲丙基三乙氧基硅烷或γ-巯丙基三甲氧基硅烷。
粘结剂一般采用氰基丙烯酸酯粘结剂。
于本发明的一实施例中,所述阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成。阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维混纺而成,使得阻燃涤纶纱线更加柔软亲肤,从而拓宽其使用范围。
于本发明的一实施例中,所述阻燃涤纶纤维中阻燃添加剂的重量百分比为20~25%。阻燃涤纶纤维中阻燃添加剂控制在20~25%,从而兼顾阻燃效果以及涤纶的力学性能。
于本发明的一实施例中,所述阻燃添加剂包括重量份数的如下组分:30~35份的聚磷酸铵,3~5份的三(2-羟乙基)异氰尿酸酯,2~3份的水合硼酸锌,5~8份的氢氧化铝,5~8份的偶联剂。
阻燃添加剂中阻燃剂的主要成分为聚磷酸铵,整体采用无卤阻燃剂,更为绿色环保;通过添加水合硼酸锌和氢氧化铝,可以提高阻燃添加剂的阻燃性能,还能减少燃烧时烟雾的产生,也能避免涤纶燃烧过程中形成熔滴;通过添加偶联剂提高整体的均匀度以及对涤纶的附着力。
于本发明的一实施例中,所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:(3~5)。
氨纶芯纱上涂覆有阻燃涂层剂,使得氨纶芯纱也具有良好的阻燃效果,并且具有一定增强氨纶芯纱力学性能的效果。
于本发明的一实施例中,所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4。
于本发明的一实施例中,所述阻燃涂层剂包括重量份数的如下组分:30~35份的聚磷酸铵,5~8份的三(2-羟乙基)异氰尿酸酯,1~2份的三聚氰胺氰尿酸,5~8份的氢氧化铝,3~5份的偶联剂,5~8份的粘结剂。
阻燃涂层剂的主要成分与阻燃添加剂相同,阻燃涂层剂中没有采用水合硼酸锌而是采用三聚氰胺氰尿酸,由于氨纶燃烧后灰烬为软蓬松黑灰,因此不添加水合硼酸锌而是选择添加三聚氰胺氰尿酸,此外三聚氰胺氰尿酸也具有更好的阻燃效果;通过添加偶联剂提高阻燃涂层剂整体的均匀度以及对氨纶的附着力;粘结剂可以将阻燃成分粘结在氨纶上,并且可以形成表面均匀的涂层。
本发明的第二方面,提供一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,即得阻燃芯纱;将PET切片后烘干,再将烘干的PET置于250~280℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线。
拉丝的过程为:将经过熔融步骤的物料进行挤压成型,冷却后形成POY丝线,并将POY丝线依次经过第一罗拉胃入、上热箱加热、第二罗拉进行拉伸、下热箱定型、第三罗拉进一步定型、上油器进行加油、卷绕辊成型得到阻燃涤纶纤维。
喷气纺纱的主要原理是利用喷射气流对牵伸后,纤维条施行加捻时,纤维条上一些头端自由纤维包缠在纤维条外围纺纱。有单喷嘴和双喷嘴式两种,后者纺纱质量好且稳定。纤维条被牵伸装置拉细,从前罗拉输出,经第一喷嘴、第二喷嘴、导纱钩、引纱罗拉,由槽筒卷绕成筒子,两喷嘴的涡流旋转方向相反,且第二喷嘴的旋涡强度大于第一喷嘴,使两个喷嘴间纱条上的捻回能克服第一喷嘴对纱条所加的扭矩和阻力;传向前罗拉钳口处,纤维条外围被加捻的纤维自由头端受第一喷嘴的影响,以相反的方向包缠到纤维条上,受捻的纱芯部分纤维经过喷嘴后退拈,而包缠纤维则在反向退拈过程中愈包愈紧提供成纱强力及抱合力。同环锭纺纱比较,喷气纺纱有产量高、卷装大、工序短等优点。喷气纺纱速度范围由100~200米/分钟,适纺纱支范围是:5.5~3.0特斯。产量为环锭纺10倍,气流纺2倍,适纺各种短纤和长丝包芯纱。
于本发明的一实施例中,所述步骤一中阻燃芯纱的烘干温度为160~180℃;所述步骤一中PET切片的烘干温度为150~180℃。
于本发明的一实施例中,所述步骤二中第一喷嘴压力为0.35~0.40Mpa;第二喷嘴压力为0.45~0.50Mpa,卷绕比为0.98~1.00,第一喷嘴用H3型;第二喷嘴选用H3-H40;喷气纺车间的温度控制在25~28℃,相对湿度为65~75%。
如上所述,本发明的一种阻燃涤纶纱线及其制备方法,具有以下有益效果:阻燃涤纶纱线的鞘纱和芯纱均具有良好的阻燃效果,从而使得阻燃涤纶纱线整体具有良好的阻燃效果。阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维混纺而成,使得阻燃涤纶纱线更加柔软亲肤,从而拓宽其使用范围。氨纶芯纱上涂覆有阻燃涂层剂,使得氨纶芯纱也具有良好的阻燃效果,并且具有一定增强氨纶芯纱力学性能的效果。阻燃添加剂中阻燃剂的主要成分为聚磷酸铵,整体采用无卤阻燃剂,更为绿色环保;通过添加水合硼酸锌和氢氧化铝,可以提高阻燃添加剂的阻燃性能,还能减少燃烧时烟雾的产生,也能避免涤纶燃烧过程中形成熔滴;通过添加偶联剂提高整体的均匀度以及对涤纶的附着力。阻燃涂层剂的主要成分与阻燃添加剂相同,阻燃涂层剂中没有采用水合硼酸锌而是采用三聚氰胺氰尿酸,由于氨纶燃烧后灰烬为软蓬松黑灰,因此不添加水合硼酸锌而是选择添加三聚氰胺氰尿酸,此外三聚氰胺氰尿酸也具有更好的阻燃效果。
具体实施方式
以下由特定的具体实施例说明本发明的实施方式,熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
实施例1
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为4:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为15%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:3;
所述阻燃添加剂包括重量份数的如下组分:20份的聚磷酸铵,1份的三(2-羟乙基)异氰尿酸酯,1份的水合硼酸锌,3份的氢氧化铝,3份的乙烯基三乙氧基硅烷;
所述阻燃涂层剂包括重量份数的如下组分:20份的聚磷酸铵,2份的三(2-羟乙基)异氰尿酸酯,1份的三聚氰胺氰尿酸,3份的氢氧化铝,1份的乙烯基三乙氧基硅烷,3份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为160℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为150℃,再将烘干的PET置于250℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.35Mpa;第二喷嘴压力为0.45Mpa;卷绕比为0.98;喷气纺车间的温度控制在25℃,相对湿度为65%。
实施例2
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为6:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为15~30%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:5;
所述阻燃添加剂包括重量份数的如下组分:40份的聚磷酸铵,10份的三(2-羟乙基)异氰尿酸酯,3份的水合硼酸锌,8份的氢氧化铝,8份的乙烯基三硅烷;
所述阻燃涂层剂包括重量份数的如下组分:40份的聚磷酸铵,8份的三(2-羟乙基)异氰尿酸酯,3份的三聚氰胺氰尿酸,8份的氢氧化铝,5份的乙烯基三硅烷,8份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为180℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为180℃,再将烘干的PET置于280℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.40Mpa;第二喷嘴压力为0.50Mpa;卷绕比为1.00;喷气纺车间的温度控制在28℃,相对湿度为75%。
实施例3
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为20%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4;
所述阻燃添加剂包括重量份数的如下组分:30份的聚磷酸铵,3份的三(2-羟乙基)异氰尿酸酯,2份的水合硼酸锌,5份的氢氧化铝,5份的γ-甲基丙烯酸丙酯基三甲氧基硅烷;
所述阻燃涂层剂包括重量份数的如下组分:30份的聚磷酸铵,5份的三(2-羟乙基)异氰尿酸酯,1份的三聚氰胺氰尿酸,5份的氢氧化铝,3份的γ-甲基丙烯酸丙酯基三甲氧基硅烷,5份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为180℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为180℃,再将烘干的PET置于280℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.40Mpa;第二喷嘴压力为0.50Mpa;卷绕比为1.00;喷气纺车间的温度控制在28℃,相对湿度为75%。
实施例4
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为25%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4;
所述阻燃添加剂包括重量份数的如下组分:35份的聚磷酸铵,5份的三(2-羟乙基)异氰尿酸酯,3份的水合硼酸锌,8份的氢氧化铝,8份的乙烯基三乙氧基硅烷;
所述阻燃涂层剂包括重量份数的如下组分:35份的聚磷酸铵,8份的三(2-羟乙基)异氰尿酸酯,2份的三聚氰胺氰尿酸,8份的氢氧化铝,5份的乙烯基三乙氧基硅烷,8份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为170℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为160℃,再将烘干的PET置于270℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.38Mpa;第二喷嘴压力为0.48Mpa;卷绕比为0.99;喷气纺车间的温度控制在27℃,相对湿度为70%。
实施例5
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为22%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4;
所述阻燃添加剂包括重量份数的如下组分:32份的聚磷酸铵,4份的三(2-羟乙基)异氰尿酸酯,2份的水合硼酸锌,7份的氢氧化铝,6份的乙烯基三乙氧基硅烷;
所述阻燃涂层剂包括重量份数的如下组分:32份的聚磷酸铵,6份的三(2-羟乙基)异氰尿酸酯,2份的三聚氰胺氰尿酸,7份的氢氧化铝,4份的乙烯基三乙氧基硅烷,7份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为170℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为160℃,再将烘干的PET置于270℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.38Mpa;第二喷嘴压力为0.48Mpa;卷绕比为0.99;喷气纺车间的温度控制在27℃,相对湿度为70%。
对比例1
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和氨纶芯纱,所述阻燃鞘纱和氨纶芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为22%;
所述阻燃添加剂包括重量份数的如下组分:32份的聚磷酸铵,4份的三(2-羟乙基)异氰尿酸酯,2份的水合硼酸锌,7份的氢氧化铝,6份的乙烯基三乙氧基硅烷;
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将PET切片后烘干,烘干温度为160℃,再将烘干的PET置于270℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将氨纶芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.38Mpa;第二喷嘴压力为0.48Mpa;卷绕比为0.99;喷气纺车间的温度控制在27℃,相对湿度为70%。
对比例2
一种阻燃涤纶纱线,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为22%;
所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4;
所述阻燃添加剂包括重量份数的如下组分:32份的聚磷酸铵,4份的三(2-羟乙基)异氰尿酸酯,6份的乙烯基三乙氧基硅烷;
所述阻燃涂层剂包括重量份数的如下组分:32份的聚磷酸铵,6份的三(2-羟乙基)异氰尿酸酯,4份的乙烯基三乙氧基硅烷,7份的氰基丙烯酸酯粘结剂。
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,烘干温度为170℃,即得阻燃芯纱;将PET切片后烘干,烘干温度为160℃,再将烘干的PET置于270℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.38Mpa;第二喷嘴压力为0.48Mpa;卷绕比为0.99;喷气纺车间的温度控制在27℃,相对湿度为70%。
对比例3
一种涤纶纱线,所述涤纶纱线包括涤纶鞘纱和氨纶芯纱,所述鞘纱和氨纶芯纱采用喷气纺的方式制成包芯纱;
所述涤纶鞘纱由涤纶纤维和棉纤维按照质量比为5:1混纺制备而成;
一种制备上述阻燃涤纶纱线的方法,包括如下步骤:
步骤一、将PET切片后烘干,烘干温度为160℃,再将烘干的PET置于270℃的熔炉中,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将涤纶纤维与棉纤维按照上述质量比进行混纺,得到涤纶鞘纱;
步骤二、将氨纶芯纱和涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线;第一喷嘴用H3型;第二喷嘴选用H3-H40,第一喷嘴压力为0.38Mpa;第二喷嘴压力为0.48Mpa;卷绕比为0.99;喷气纺车间的温度控制在27℃,相对湿度为70%。
对比例1相对于实施例5而言没有采用阻燃芯纱。对比例2相对于实施例而言,阻燃添加剂中没有添加水合硼酸锌和氢氧化铝,阻燃涂层剂中没有添加三聚氰胺氰尿酸和氢氧化铝。对比例3相对于实施例5而言没有添加阻燃物质。
将实施例1~实施例5以及对比例1~对比例3制备得到的涤纶纱线进行如下测试,根据GB/T 5455-2014进行测试续燃时间、阻燃时间、炭长、融滴数量等,测试结果如表1所示:
表格1
阻燃添加剂中阻燃剂的主要成分为聚磷酸铵,整体采用无卤阻燃剂,更为绿色环保;通过添加水合硼酸锌和氢氧化铝,可以提高阻燃添加剂的阻燃性能,还能减少燃烧时烟雾的产生,也能避免涤纶燃烧过程中形成熔滴;通过添加偶联剂提高整体的均匀度以及对涤纶的附着力。阻燃涂层剂的主要成分与阻燃添加剂相同,阻燃涂层剂中没有采用水合硼酸锌而是采用三聚氰胺氰尿酸,由于氨纶燃烧后灰烬为软蓬松黑灰,因此不添加水合硼酸锌而是选择添加三聚氰胺氰尿酸,此外三聚氰胺氰尿酸也具有更好的阻燃效果。
综上所述,本发明包纱线通过设计阻燃涤纶鞘纱和阻燃芯纱可以兼顾阻燃性能和包纱线的力学性能。所以,本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效,而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下,对上述实施例进行修饰或改变。因此,举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变,仍应由本发明的权利要求所涵盖。
Claims (10)
1.一种阻燃涤纶纱线,其特征在于,所述阻燃涤纶纱线包括阻燃涤纶鞘纱和阻燃芯纱,所述阻燃鞘纱和阻燃芯纱采用喷气纺的方式制成包芯纱;
所述阻燃涤纶鞘纱由阻燃涤纶纤维和棉纤维按照质量比为(4~6):1混纺制备而成;所述阻燃涤纶纤维中阻燃添加剂的重量百分比为15~30%;
所述阻燃芯纱为氨纶芯纱上涂覆有阻燃涂层剂;
所述阻燃添加剂包括重量份数的如下组分:20~40份的聚磷酸铵,1~10份的三(2-羟乙基)异氰尿酸酯,1~3份的水合硼酸锌,3~8份的氢氧化铝,3~8份的偶联剂;
所述阻燃涂层剂包括重量份数的如下组分:20~40份的聚磷酸铵,2~8份的三(2-羟乙基)异氰尿酸酯,1~3份的三聚氰胺氰尿酸,3~8份的氢氧化铝,1~5份的偶联剂,3~8份的粘结剂。
2.根据权利要求1所述的一种阻燃涤纶纱线,其特征在于:所述阻燃涤纶纤维和棉纤维按照质量比为5:1混纺制备而成。
3.根据权利要求1或2所述的一种阻燃涤纶纱线,其特征在于:所述阻燃涤纶纤维中阻燃添加剂的重量百分比为20~25%。
4.根据权利要求3所述的一种阻燃涤纶纱线,其特征在于:所述阻燃添加剂包括重量份数的如下组分:30~35份的聚磷酸铵,3~5份的三(2-羟乙基)异氰尿酸酯,2~3份的水合硼酸锌,5~8份的氢氧化铝,5~8份的偶联剂。
5.根据权利要求1所述的一种阻燃涤纶纱线,其特征在于:所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:(3~5)。
6.根据权利要求1或5所述的一种阻燃涤纶纱线,其特征在于:所述阻燃涂层剂形成的涂层与氨纶芯纱的质量比为1:4。
7.根据权利要求1或5所述的一种阻燃涤纶纱线,其特征在于:所述阻燃涂层剂包括重量份数的如下组分:30~35份的聚磷酸铵,5~8份的三(2-羟乙基)异氰尿酸酯,1~2份的三聚氰胺氰尿酸,5~8份的氢氧化铝,3~5份的偶联剂,5~8份的粘结剂。
8.一种制备如权利要求1~7任一项所述阻燃涤纶纱线的方法,其特征在于,包括如下步骤:
步骤一、将阻燃涂层剂按照上述重量百分比喷涂在氨纶芯纱后烘干,即得阻燃芯纱;将PET切片后烘干,再将烘干的PET置于250~280℃的熔炉中,再按照上述重量百分比加入阻燃添加剂,在熔炉中混合均匀后进行拉丝,拉丝完成后得到阻燃涤纶纤维,再将阻燃涤纶纤维与棉纤维按照上述质量比进行混纺,得到阻燃涤纶鞘纱;
步骤二、将阻燃芯纱和阻燃涤纶鞘纱同时喂入喷气纺的第一个喷嘴中,从第二个喷嘴中即得阻燃涤纶纱线。
9.根据权利要求8所述的一种制备阻燃涤纶纱线的方法,其特征在于:所述步骤一中阻燃芯纱的烘干温度为160~180℃;所述步骤一中PET切片的烘干温度为150~180℃。
10.根据权利要求8所述一种制备阻燃涤纶纱线的方法,其特征在于:所述步骤二中第一喷嘴压力为0.35~0.40Mpa;第二喷嘴压力为0.45~0.50Mpa。
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