CN113026363A - 一种pbs单丝及其制备方法 - Google Patents
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Abstract
本申请涉及纺织技术领域,更具体地说,它涉及一种PBS单丝及其制备方法。PBS单丝包括芯纱以及包覆于芯纱表面的PBS复合材料,所述PBS复合材料包括以下重量份的组分:PBS、PSF、增容剂、云母粉以及阻燃母粒;其制备方法为:将云母粉和阻燃母粒进行碾压粉碎,得到混合粉末,将PBS、PSF、增容剂以及混合粉末搅拌混合60‑100min,得到PBS复合材料;将PBS复合材料塑化成均匀的熔化体,并通过挤出机挤出,同时将聚酯长丝通过挤出机挤出,使TPE复合材料包覆在聚酯长丝的外表面上,得到PBS单丝。本申请的PBS单丝可用于纺织物,其具有更佳的阻燃隔热性能。
Description
技术领域
本申请涉及纺织技术领域,更具体地说,它涉及一种PBS单丝及其制备方法。
背景技术
科学技术的不断发展促使纺织行业新型原料的研发和生产达到了一个空前鼎盛的时期,各种新型原料不断涌现。给纺织品研究工作开辟了一个崭新的领域。同时随着人们生活水平的不断提高,消费者对于纺织品的选择已经不止局限在款式和花色上,更多的考虑到面料的舒适性、环保性和功能性。
纱线是确保纺织品质量的关键,目前较多的纺织品为了提高其触感柔软度以及力学性能,通常采用聚丁二酸丁二醇酯(PBS)和其他纤维混纺来制得。PBS力学性能优异,接近PP和ABS塑料;耐热性能好,克服了其它生物降解塑料耐热温度低的缺点。
针对上述中的相关技术,发明人认为存在有以下缺陷:针对用于长期处于高温现场作业的工人衣物或是需要经常进行高温杀菌消毒的衣物用品而言,目前PBS材料的耐热性能还是远远不够的。
发明内容
为了提高PBS单丝的阻燃隔热性能,本申请提供一种PBS单丝及其制备方法。
第一方面,本申请提供一种PBS单丝,采用如下的技术方案:
一种PBS单丝,包括芯纱以及包覆于芯纱表面的PBS复合材料,所述PBS复合材料包括以下重量份的组分:
PBS 30-65份;
PSF 12-20份;
增容剂 8-15份;
云母粉 3-8份;
阻燃母粒 3-10份。
通过采用上述技术方案,PBS是一种新型的可生物降解高分子材料,力学性能优异,耐热性能好,自身热变形温度接近100℃,但由于针对长期处于高温现场作业的纺织品或是需要经常高温杀菌消毒的纺织物而言,采用目前的PBS单丝制作形成的纺织品的阻燃隔热性能是不能满足的,因而,本申请通过采用PSF与PBS配合使用形成复合树脂,且在配方中添加阻燃母粒后,能显著提高制成的PBS单丝的阻燃隔热效果。
优选的,所述PSF经过预处理,预处理步骤主要为:将PSF加入至乙醇溶剂中,然后在80-110℃下恒温搅拌30-90min,随后升温至150-200℃,保温25-30min。
通过采用上述技术方案,能预先对PSF进行软化,软化后的PSF能增强与PBS的相容性,以改善制得的PBS单丝的机械性能。
优选的,所述搅拌速度为350-500r/min。
通过采用上述技术方案,将搅拌速度控制在上述范围内,能对PSF进行充分的软化处理,而又不致于导致物料的结构受损。
优选的,所述PBS复合材料包括以下重量份的组分:
PBS 50-65份;
PSF 15-20份;
增容剂 8-10份;
云母粉 5-8份;
阻燃母粒 5-10份。
通过采用上述技术方案,采用上述的配方方案,所制得的PBS复合材料用于制作PBS单丝,能具有阻燃效果以及加工性能更佳的优点。
优选的,所述阻燃母粒包括以下重量份的组分:
红磷 20-40份
石蜡粉 5-15份;
海泡石粉 8-15份;
硅酮粉 2-5份。
通过采用上述技术方案,采用石蜡粉能提高红磷在PBS复合材料体系中的分散性;海泡石粉具有收缩率低,可塑性好的特点,还具有脱色、隔热、绝缘、抗腐蚀、抗辐射及热稳定等性能;采用硅酮粉能提高PBS复合材料的加工流动性和爽滑性能,改善利用PBS复合材料制得的PBS单丝表面的光泽度,进而增加PBS单丝的丝质触感,上述四种物料复配形成的阻燃母粒能显著提高PBS复合材料的阻燃性能,且在耐老化方面也得到提升。
优选的,所述石蜡粉为酰胺蜡粉,所述酰胺蜡粉的主要制备步骤为:向60份石蜡粉中加入20-30份脂肪酸与0.03-0.1份抗氧剂,在惰性气体的保护下加热至熔融,搅拌下缓缓加入8-15份二胺,反应1-2h,温度保持在120-140℃,真空抽滤并烘干。
通过采用上述技术方案,石蜡采用酰胺化的酰胺蜡,能增强石蜡本身的乳化性能,提高阻燃母粒在体系中的分散相容性能,且提高PBS复合材料的耐老化黄化的性能。
优选的,所述阻燃母粒包括以下重量份的组分:
红磷 40份
酰胺蜡粉 15份;
海泡石粉 8份;
硅酮粉 2份。
通过采用上述技术方案,采用上述特定的配比方案,能提高阻燃母粒在PBS复合材料体系中的相容性,提高制得的PBS单丝的机械性能。
优选的,所述云母粉为白云母粉。
通过采用上述技术方案,白云母粉具有更好的耐酸碱性、耐老化性,从而使用白云母粉制备得到的PBS复合材料的稳定性更强。
第二方面,本申请提供一种PBS单丝的制备方法,采用如下的技术方案:
一种PBS单丝的制备方法,包括以下步骤:
步骤一、按照重量份计,将云母粉和阻燃母粒进行碾压粉碎,得到细微均匀的混合粉末;
步骤二、将PBS、PSF、增容剂以及步骤一得到的混合粉末搅拌混合60-100min,得到PBS复合材料;
步骤三、将步骤二得到PBS复合材料塑化成均匀的熔化体,并通过挤出机挤出,同时将芯纱通过挤出机挤出,使TPE复合材料包覆在芯纱的外表面上,得到PBS单丝。
优选的,所述混合粉末的粒径为0.3-1微米。
通过采用上述技术方案,首先将云母粉和阻燃母粒进行粉碎能够得到更细微均匀的混合粉末,有利于后续与其他组分进行作用,最后将得到的PBS复合材料通过挤出成型工艺包覆在芯纱表面,实现PBS单丝的连续化生产,能提高生产效率,降低生产成本。
综上所述,本申请具有以下有益效果:
1、由于本申请采用PSF与PBS配合使用形成复合树脂,且在配方中添加阻燃母粒后,能显著提高制成的PBS单丝的阻燃隔热效果。
2、本申请中优选采用红磷、石蜡粉、海泡石粉以及硅酮粉复配形成的阻燃母粒,能显著提高PBS复合材料的阻燃性能,且在耐老化方面也得到提升。
具体实施方式
以下结合实施例对本申请作进一步详细说明。
以下制备例、实施例以及对比例中涉及到的原料来源如下(可选择以下材料,但不限于此):
表1原料来源表
制备例1
一种阻燃母粒,具体制备步骤为:取20g红磷、5g石蜡粉、15g海泡石粉以及5g硅酮粉放至搅拌机中进行搅拌混合,转速为4200r/min,搅拌时间为30min。
制备例2-3
一种阻燃母粒,与制备例1的区别在于各组分的配比不同,具体参见表2。
制备例4
一种阻燃母粒,与制备例3的区别在于,本实施例的石蜡粉采用酰胺蜡,酰胺蜡粉的具体制备步骤为:向60份石蜡粉中加入20份脂肪酸与0.03份抗氧剂,在惰性气体的保护下加热至熔融,搅拌下缓缓加入15份二胺,反应1h,温度保持在120℃,真空抽滤并烘干。
表2各制备例的组分配比表
组分 | 红磷 | 石蜡粉 | 海泡石粉 | 硅酮粉 |
制备例1 | 20 | 5 | 15 | 5 |
制备例2 | 40 | 15 | 8 | 2 |
制备例3 | 30 | 10 | 12 | 3 |
制备例4 | 30 | 10 | 12 | 3 |
实施例1
一种PBS单丝,由以下步骤制得:
步骤一、将3g云母粉和3g制备例1制得的阻燃母粒进行碾压粉碎,转速为4800r/min,粉碎时间为10min,得到细微均匀的混合粉末。其中,云母粉为黑云母粉。
步骤二、将30g PBS、12g PSF、15g增容剂以及步骤一得到的混合粉末搅拌混合60min,得到PBS复合材料;
步骤三、将步骤二得到PBS复合材料塑化成均匀的熔化体,并通过挤出机挤出,同时将芯纱通过挤出机挤出,使TPE复合材料包覆在芯纱的外表面上,得到PBS单丝。在本实施例中,芯纱由PTT纤维(磷酸三苯酯)和聚四氟乙烯纤维混纺形成。
实施例2-4
一种PBS单丝,与实施例1的区别在于,采用不同制备例得到的阻燃母粒以及各组分的配比不同,具体参见表3。
实施例5
一种PBS单丝,与实施例1的区别在于,本实施例中的PSF经过预处理,预处理步骤具体为:将12g PSF加入至10ml乙醇溶剂中,然后在80℃下恒温搅拌90min,随后升温至150,保温30min。
实施例6
一种PBS单丝,与实施例2的区别在于,本实施例中的云母粉采用白云母粉。
实施例7
一种PBS单丝,与实施例1的区别在于,本实施例中的阻燃母粒仅由红磷单一组分组成。
实施例8
一种PBS单丝,与实施例8的区别在于,本实施例中的PSF经过预处理,具体预处理步骤与实施例5相同。
实施例9
一种PBS单丝,与实施例4的区别在于,本实施例在步骤一得到细微均匀的混合粉末后,对混合粉末进行筛分,得到粒径小于1微米的粉末。
对比例1
一种PBS单丝,与实施例1的区别在于,采用等量的PBS替代PSF。
对比例2
一种PBS单丝,与实施例1的区别在于,采用等量的云母粉替代阻燃母粒。
表3各实施例和各对比例的组分配比表
性能检测试验按上述各实施例和各对比例制成11组PBS单丝,分别进行性能测试,测试项目及测试标准如下:
断裂强度:根据GB/T 3917.2-2009测试PBS单丝的撕破性能,测试结果见表4。
阻燃性能测试:根据GB/T 5455-1997,将30cm*8cm的试样放在规定的燃烧器下点燃,测量规定点燃时间12s后,记录试样的续燃,阴燃时间及损毁长度(碳长),测试结果见表4。
高温耐老化性能测试:将各实施例和个对比例制成的PBS单丝均置于300℃的高温下30min后,进行断裂强度的测试,计算PBS单丝断裂强度的变化,测试结果见表4。
表4各实施例和各对比例的测试结果
结合实施例1-4并结合表4可以看出,在PBS复合材料的配方中添加PSF和阻燃母粒所制得的PBS单丝,其续燃时间均在3s以下,阴燃时间均在10s以下,将PBS单丝放置在300℃的高温条件下放置30min,其断裂强力变化均在100N以下,即PBS单丝具有较高的阻燃隔热性能。其中,实施例1与实施例2或实施例3对比,实施例2和实施例3制得的PBS单丝,在阻燃性能测试中,续燃时间和阴燃时间均有较好的表现,即采用实施例2或实施例3的组分配比方案,能提高PBS单丝的阻燃隔热效果。另外,再用实施例3和实施例4结合对比,可发现采用实施例4的组分配比方案,能更进一步提高PBS单丝的阻燃隔热效果。
结合实施例1和实施例5并结合表4可以看出,采用经过本申请的预处理方法对PSF处理后,所制得的PBS单丝的断裂强力从1374N提升至1435N,即提高了PBS单丝的机械性能。
结合实施例2和实施例6并结合表4可以看出,采用白云母代替黑云母,所制得的PBS单丝在经过断裂强力测试后,其断裂强力的变化减少,即提高了PBS单丝的高温耐老化性能。
结合实施例1和实施例7并结合表4可以看出,采用实施例1的四种组分复配形成的阻燃母粒能提高PBS单丝的机械性能,此外,结合实施例5、实施例7-8并结合表4可以看出,采用四种组分复配性能的阻燃母粒以及采用本申请预处理方法处理过的PSF共同使用,所制得的PBS单丝在阻燃隔热效果上有显著的提升。
结合实施例4和实施例9并结合表4可以看出,在制备过程中将混合粉末的粒径控制在1微米范围内,能提高PBS单丝的机械性能。
结合实施例1和对比例1-2并结合表4可以看出,需要采用PSF与阻燃母粒共同配合使用才能对PBS单丝的阻燃隔热性能起到显著的提升。
本具体实施例仅仅是对本申请的解释,其并不是对本申请的限制,本领域技术人员在阅读完本说明书后可以根据需要对本实施例做出没有创造性贡献的修改,但只要在本申请的权利要求范围内都受到专利法的保护。
Claims (10)
1.一种PBS单丝,其特征在于:包括芯纱以及包覆于芯纱表面的PBS复合材料,所述PBS复合材料包括以下重量份的组分:
PBS 30-65份;
PSF 12-20份;
增容剂 8-15份;
云母粉 3-8份;
阻燃母粒 3-10份。
2.根据权利要求1所述的一种PBS单丝,其特征在于:所述PSF经过预处理,预处理步骤主要为:将PSF加入至乙醇溶剂中,然后在80-110℃下恒温搅拌30-90min,随后升温至150-200℃,保温25-30min。
3.根据权利要求2所述的一种PBS单丝,其特征在于:所述搅拌速度为350-500r/min。
4.根据权利要求1-3任一所述的一种PBS单丝,其特征在于:所述阻燃母粒包括以下重量份的组分:
红磷 20-40份
石蜡粉 5-15份;
海泡石粉 8-15份;
硅酮粉 2-5份。
5.根据权利要求4所述的一种PBS单丝,其特征在于:所述石蜡粉为酰胺蜡粉,所述酰胺蜡粉的主要制备步骤为:向60份石蜡粉中加入20-30份脂肪酸与0.03-0.1份抗氧剂,在惰性气体的保护下加热至熔融,搅拌下缓缓加入8-15份二胺,反应1-2h,温度保持在120-140℃,真空抽滤并烘干。
6.根据权利要求5所述的一种PBS单丝,其特征在于:所述阻燃母粒包括以下重量份的组分:
红磷 40份
酰胺蜡粉 15份;
海泡石粉 8份;
硅酮粉 2份。
7.根据权利要求1所述的一种PBS单丝,其特征在于:所述PBS复合材料包括以下重量份的组分:
PBS 50-65份;
PSF 15-20份;
增容剂 8-10份;
云母粉 5-8份;
阻燃母粒 5-10份。
8.根据权利要求1-3、5-7任一所述的一种PBS单丝,其特征在于:所述云母粉为白云母粉。
9.权利要求1-8任一所述的一种PBS单丝的制备方法,其特征在于:包括以下步骤:
步骤一、按照重量份计,将云母粉和阻燃母粒进行碾压粉碎,得到细微均匀的混合粉末;
步骤二、将PBS、PSF、增容剂以及步骤一得到的混合粉末搅拌混合60-100min,得到PBS复合材料;
步骤三、将步骤二得到PBS复合材料塑化成均匀的熔化体,并通过挤出机挤出,同时将芯纱通过挤出机挤出,使TPE复合材料包覆在芯纱的外表面上,得到PBS单丝。
10.根据权利要求9所述的一种PBS单丝的制备方法,其特征在于:所述混合粉末的粒径为0.3-1微米。
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