CN114456583A - 一种单层高透湿的tpu薄膜及其制备方法 - Google Patents
一种单层高透湿的tpu薄膜及其制备方法 Download PDFInfo
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- CN114456583A CN114456583A CN202210089701.1A CN202210089701A CN114456583A CN 114456583 A CN114456583 A CN 114456583A CN 202210089701 A CN202210089701 A CN 202210089701A CN 114456583 A CN114456583 A CN 114456583A
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- tpu film
- tpu
- ammonium carbonate
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- 239000002356 single layer Substances 0.000 title claims abstract description 18
- 229920002803 thermoplastic polyurethane Polymers 0.000 title claims description 68
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000004433 Thermoplastic polyurethane Substances 0.000 title description 58
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000001099 ammonium carbonate Substances 0.000 claims abstract description 31
- 235000012501 ammonium carbonate Nutrition 0.000 claims abstract description 31
- 239000004743 Polypropylene Substances 0.000 claims abstract description 29
- 239000012510 hollow fiber Substances 0.000 claims abstract description 29
- -1 polypropylene Polymers 0.000 claims abstract description 29
- 229920001155 polypropylene Polymers 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 28
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000005187 foaming Methods 0.000 claims abstract description 21
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003063 flame retardant Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 17
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 239000012745 toughening agent Substances 0.000 claims abstract description 16
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 11
- 229920000570 polyether Polymers 0.000 claims abstract description 11
- 229920005862 polyol Polymers 0.000 claims abstract description 10
- 150000003077 polyols Chemical class 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001868 water Inorganic materials 0.000 claims abstract description 6
- 230000002940 repellent Effects 0.000 claims abstract description 4
- 239000005871 repellent Substances 0.000 claims abstract description 4
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- 239000000463 material Substances 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000006229 carbon black Substances 0.000 claims description 8
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 8
- 229920001296 polysiloxane Polymers 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 6
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical group CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 6
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 6
- BZQKBFHEWDPQHD-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-[2-(2,3,4,5,6-pentabromophenyl)ethyl]benzene Chemical compound BrC1=C(Br)C(Br)=C(Br)C(Br)=C1CCC1=C(Br)C(Br)=C(Br)C(Br)=C1Br BZQKBFHEWDPQHD-UHFFFAOYSA-N 0.000 claims description 5
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 32
- 229920001971 elastomer Polymers 0.000 abstract description 23
- 239000000806 elastomer Substances 0.000 abstract description 23
- 239000006260 foam Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 239000003973 paint Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 21
- 238000000071 blow moulding Methods 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- PRKQVKDSMLBJBJ-UHFFFAOYSA-N ammonium carbonate Chemical group N.N.OC(O)=O PRKQVKDSMLBJBJ-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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Abstract
本申请涉及TPU弹性体的领域,更具体地说,它涉及一种单层高透湿的TPU薄膜及其制备方法。具体公开了一种单层高透湿的TPU薄膜,包括以下重量份的原料:包括以下重量份的组分:聚醚多元醇70‑80份;二苯甲烷二异氰酸酯100‑130份;1,4‑丁二醇30‑50份;增透剂50‑80份;润滑剂5‑8份;疏水剂10‑12份;增韧剂3‑8份;阻燃剂10‑15份;抗氧剂1‑3份;所述增透剂包括聚丙烯中空纤维和碳酸铵,所述聚丙烯中空纤维和碳酸铵的重量比为(1‑5):(25‑29)。本申请中的碳酸铵通过发泡使得TPU弹性体内形成泡孔,从而能够增强TPU弹性体的透气性和透湿性,且聚丙烯中空纤维内的空心孔能够进一步增强TPU弹性体的透气性和透湿性,因此TPU弹性体制备的TPU薄膜能够具备更好地透湿性。
Description
技术领域
本申请涉及TPU弹性体的领域,更具体地说,它涉及一种单层高透湿的TPU薄膜及其制备方法。
背景技术
热可塑性TPU弹性体具有弹性好、物性佳、各种机械强度都较佳的特点,热可塑性TPU弹性体适用于射出、押出、吹塑及溶解成溶液型树脂等加工方式,是塑胶加工业者经常使用的塑胶材料,其制成产品涵盖了工业应用和民用必需品的范围。
TPU弹性体弹性较好且较为柔软,TPU弹性体制备出的薄膜可用于制备衣服配件或者贴身用品,但是用作贴身用品,例如鞋垫、手套时,TPU薄膜透气、透湿性较差,水分较难穿过,因此造成了较差的使用体验,需要进一步改进。
发明内容
为了提高TPU薄膜的透湿性,本申请提供一种单层高透湿的TPU薄膜及其制备方法。第一方面,本申请提供的一种单层高透湿的TPU薄膜,采用如下的技术方案:
一种单层高透湿的TPU薄膜,包括以下重量份的组分:
聚醚多元醇 70-80份;
二苯甲烷二异氰酸酯 100-130份;
1,4-丁二醇 30-50份;
增透剂 50-80份;
润滑剂 5-8份;
疏水剂 10-12份;
增韧剂 3-8份;
阻燃剂 10-15份;
抗氧剂 1-3份;
所述增透剂包括聚丙烯中空纤维和碳酸铵,所述聚丙烯中空纤维和碳酸铵的重量比为(1-5):(25-29)。
通过采用上述技术方案,聚醚多元醇、二苯甲烷二异氰酸酯和1,4-丁二醇混合挤出形成TPU弹性体,TPU弹性体具有弹性好、物性佳的优点,增透剂能够增强头弹性体的透气性和透湿性,聚丙烯中空纤维有空心孔,空气和水汽能够通过句柄新中空纤维的空心孔穿过,另外碳酸铵在高温下分解成氨气和二氧化碳和水,氨气和二氧化碳会使得TPU弹性体内形成泡孔,从而进一步增强了tup弹性体的透气性。另外,疏水剂能够减少水分粘附在TPU薄膜上,从而进一步提升了TPU薄膜的使用体验
在一个具体的可实施方式中,所述聚丙烯中空纤维和碳酸铵的重量比为(2-4):(26-28)。
在一个具体的可实施方式中,所述聚丙烯中空纤维和碳酸铵的重量比为3:27。
在一个具体的可实施方式中,所述润滑剂选用硬脂酸锌和二乙烯三胺中的一种或两种。
在一个具体的可实施方式中,所述疏水剂选用疏水白碳黑和丁苯橡胶中的一种或两种。
在一个具体的可实施方式中,所述增韧剂选用丙烯酸乙酯。
在一个具体的可实施方式中,所述抗氧剂选用抗氧剂1010和抗氧剂264中的一种或两种。
在一个具体的可实施方式中,所述阻燃剂选用硅酮粉和十溴二苯乙烷中的一种或两种。
第二方面,本申请提供一种单层高透湿的TPU薄膜的制备方法,包括以下步骤:
混料:将聚醚多元醇、二苯甲烷二异氰酸酯、1,4-丁二醇、聚丙烯中空纤维、润滑剂、疏水剂、增韧剂、阻燃剂、抗氧剂混合,在180-220℃下熔炼混合,熔炼时间为20-30min,得到一级混料;
发泡:将碳酸铵和一级混料共混发泡,发泡时间为10-20min,发泡温度为150-180℃,得到二级混合物;
挤出成型:将二级混合物挤出,并进行吹塑,形成TPU薄膜,并自然冷却。
通过采用上述技术方案,通过混炼将原料进行混合,混炼过程中温度较高,因此不加入碳酸铵,混炼结束后加入碳酸铵,碳酸铵在高温下分解,分解产生的气体会在TPU弹性体内形成泡孔,从而便于气体和蒸汽的穿过,因此通过本申请的方法制备的TPU薄膜具有较强的透湿性和透气性。另外本申请的方法简单,条件要求较低,便于进行实施。
综上所述,本申请具有以下有益效果:
1、由于通过聚醚多元醇、二苯甲烷二异氰酸酯和1,4-丁二醇混合挤出形成TPU弹性体,同时TPU弹性体中有增透剂,增透剂中的碳酸铵通过发泡使得TPU弹性体内形成泡孔,从而能够增强TPU弹性体的透气性和透湿性,聚丙烯中空纤维能够增强TPU弹性体的机械强度,且聚丙烯中空纤维内的空心孔能够进一步增强TPU弹性体的透气性和透湿性,因此TPU弹性体制备的TPU薄膜能够具备更好地透湿性。
2、本申请中优选硬脂酸锌和二乙烯三胺作为润滑剂,能够增强TPU薄膜的表面的光滑度,从而获得更好地使用体验,优选采用疏水白碳黑和丁苯橡胶作为疏水剂,能够减少水分在TPU薄膜上的粘附,进一步提高了透湿性,优选采用丙烯酸乙酯作为增韧剂,进一步提高了TPU薄膜的韧性,优选采用硅酮粉和十溴二苯乙烷作为阻燃剂,能够提高TPU薄膜的耐燃效果,提高了TPU薄膜的使用安全性。
3、本申请的方法,通过碳酸铵的发泡在二级混合物内形成泡孔,从而提高了透气性,通过吹塑使得泡孔进一步连通和扩大,进一步提高了TPU薄膜的透湿性。
具体实施方式
表1:部分原料组分的来源及型号
实施例
实施例1
混料:将聚醚多元醇70kg、二苯甲烷二异氰酸酯100kg、1,4-丁二醇30kg、聚丙烯中空纤维5kg、润滑剂5kg、疏水剂10kg、增韧剂3kg、阻燃剂10kg、抗氧剂1kg混合,在180℃下熔炼混合,熔炼时间为20min,得到一级混料,润滑剂选用硬脂酸锌,疏水剂选用疏水性白碳黑,增韧剂选用丙烯酸乙酯,阻燃剂选用硅酮粉,抗氧剂选用抗氧剂1010。
发泡:将碳酸铵45kg和一级混料共混发泡,发泡时间为10min,发泡温度为150℃,得到二级混合物。
挤出成型:将二级混合物挤出,并进行吹塑,形成厚度为10um的TPU薄膜,并自然冷却至常温。
实施例2
混料:将聚醚多元醇80kg、二苯甲烷二异氰酸酯130kg、1,4-丁二醇50kg、聚丙烯中空纤维8kg、润滑剂8kg、疏水剂12kg、增韧剂8kg、阻燃剂15kg、抗氧剂3kg混合,在220℃下熔炼混合,熔炼时间为30min,得到一级混料,润滑剂选用硬脂酸锌,疏水剂选用疏水性白碳黑,增韧剂选用丙烯酸乙酯,阻燃剂选用硅酮粉,抗氧剂选用抗氧剂1010。
发泡:将碳酸铵72kg和一级混料共混发泡,发泡时间为20min,发泡温度为180℃,得到二级混合物。
挤出成型:将二级混合物挤出,并进行吹塑,形成厚度为10um的TPU薄膜,并自然冷却至常温。
实施例3
混料:将聚醚多元醇75kg、二苯甲烷二异氰酸酯120kg、1,4-丁二醇40kg、聚丙烯中空纤维7kg、润滑剂7kg、疏水剂11kg、增韧剂5kg、阻燃剂13kg、抗氧剂2kg混合,在200℃下熔炼混合,熔炼时间为25min,得到一级混料,润滑剂选用硬脂酸锌,疏水剂选用疏水性白碳黑,增韧剂选用丙烯酸乙酯,阻燃剂选用硅酮粉,抗氧剂选用抗氧剂1010。
发泡:将碳酸铵63kg和一级混料共混发泡,发泡时间为15min,发泡温度为170℃,得到二级混合物。
挤出成型:将二级混合物挤出,并进行吹塑,形成厚度为10um的TPU薄膜,并自然冷却至常温。
实施例4
实施例4与实施例3的不同之处仅在于,实施例4中的聚丙烯中空纤维的用量为2.33kg,碳酸铵的用量为67.67kg。
实施例5
实施例5与实施例3的不同之处仅在于,实施例5中的聚丙烯中空纤维的用量为4.67kg,碳酸铵的用量为65.33kg。
实施例6
实施例6与实施例3的不同之处仅在于,实施例6中的聚丙烯中空纤维的用量为9.33kg,碳酸铵的用量为60.67kg。
实施例7
实施例7与实施例3的不同之处仅在于,实施例7中的聚丙烯中空纤维的用量为11.67kg,碳酸铵的用量为58.33kg。
实施例8
实施例8与实施例3 的不同之处仅在于,实施例8中的润滑剂选用3.5kg硬脂酸锌和3.5kg二乙烯三胺。
实施例9
实施例9与实施例3 的不同之处仅在于,实施例9中的润滑剂选用7kg二乙烯三胺。
实施例10
实施例10与实施例3 的不同之处仅在于,实施例10中的疏水剂选用5.5kg疏水性白碳黑和5.5kg丁苯橡胶。
实施例11
实施例11与实施例3 的不同之处仅在于,实施例11中的疏水剂选用11kg丁苯橡胶。
实施例12
实施例12与实施例3的不同之处仅在于,实施例12中的抗氧剂选用1kg抗氧剂1010和1kg抗氧剂264。
实施例13
实施例13与实施例3的不同之处仅在于,实施例13中的抗氧剂选用2kg抗氧剂264。
实施例14
实施例14与实施例3的不同之处仅在于,实施例14中的阻燃剂选用6.5kg硅酮粉和6.5kg十溴二苯乙烷。
实施例15
实施例15与实施例3的不同之处仅在于,实施例15中的阻燃剂选用13kg十溴二苯乙烷。
对比例
对比例1
对比例1与实施例3的区别仅在于,对比例1未添加增透剂。
对比例2
对比例2与实施例3的区别仅在于,对比例2未添加聚丙烯中空玻璃纤维。
对比例3
对比例3与实施例3的区别仅在于,对比例3未添加碳酸铵。
对比例4
对比例4与实施例3的区别仅在于,对比例4未添加疏水剂。
对比例5
对比例5与实施例3 的区别仅在于,对比例5未添加增韧剂。
性能检测试验
检测方法/试验方法
1、根据 GB/T 1447-2005《纤维增强塑料拉伸性能试验方法》对各实施例和各对比例中的TPU薄膜进行拉伸强度和断裂伸长率的测定。
2、GB/T 21529-2008《塑料薄膜和薄片水蒸气透过率的测定——电解传感器法》,对各实施例和各对比例中的TPU薄膜的透湿性进行测试,测试条件为38±0.5℃,相对湿度为90%±2%,测试时间为30min。
结果及结果分析
表2:各实施例和各对比例实验数据
结合实施例1-3和对比例1-3及表2可以看出,本申请中,以聚醚多元醇、二苯甲烷二异氰酸酯和1,4-丁二醇为基料制备的TPU薄膜的透湿性得到了极大地提高。聚丙烯中空纤维能够略微提高TPU薄膜的透湿性,且能够提高TPU薄膜的拉伸强度和断裂伸长率。碳酸铵能够大幅提高TPU薄膜的透湿性,碳酸铵和聚丙烯中空纤维联合使用能够极大地增强tup薄膜的透湿性,也能略微提高tup薄膜的拉伸强度。
结合实施例3和实施例4-7及表2,碳酸铵和聚丙烯中空纤维的配比会影响到TPU薄膜的透湿性和拉伸强度,但碳酸铵和聚丙烯中空纤维的配比在本申请所限定的范围内能够达到较佳,当碳酸铵和聚丙烯中空纤维的重量比为3:27时,增透性和拉伸强度的效果达到了最佳。
结合实施例3和实施例8-9及表2,润滑剂的添加能够提高了TPU薄膜的透气性,但是会略微降低拉伸强度,且二乙烯三胺对TPU薄膜拉伸强度的影响略大于硬脂酸锌。
结合实施例3、实施例10-11和对比例4及表2,疏水剂的加入能够减少水分在TPU薄膜上的黏附,也能够减少水蒸气黏附在TPU薄膜上形成的气孔内的黏附。丁苯橡胶加入到TPU薄膜中的疏水性略微优于疏水性白碳黑。
结合实施例3和实施例12-13及表2,抗氧剂的加入能够提高TPU薄膜的抗氧性,进而提高tup薄膜的使用寿命。
结合实施例3和实施例14-15及表2,阻燃剂能够提高TPU薄膜的耐燃性,从而提高了TPU薄膜的使用安全性。
结合实施例和对比例5,增韧剂能够提高TPU薄膜的拉伸强度和断裂伸长率,并且能够略微提高了TPU薄膜的透湿性,韧性较高的TPU薄膜内行程的气孔会更加地稳定。
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 (9)
1.一种单层高透湿的TPU薄膜,其特征在于,包括以下重量份的组分:
聚醚多元醇 70-80份;
二苯甲烷二异氰酸酯 100-130份;
1,4-丁二醇 30-50份;
增透剂 50-80份;
润滑剂 5-8份;
疏水剂 10-12份;
增韧剂 3-8份;
阻燃剂 10-15份;
抗氧剂 1-3份;
所述增透剂包括聚丙烯中空纤维和碳酸铵,所述聚丙烯中空纤维和碳酸铵的重量比为(1-5):(25-29)。
2.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述聚丙烯中空纤维和碳酸铵的重量比为(2-4):(26-28)。
3.根据权利要求2所述的一种单层高透湿的TPU薄膜,其特征在于:所述聚丙烯中空纤维和碳酸铵的重量比为3:27。
4.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述润滑剂选用硬脂酸锌和二乙烯三胺中的一种或两种。
5.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述疏水剂选用疏水白碳黑和丁苯橡胶中的一种或两种。
6.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述增韧剂选用丙烯酸乙酯。
7.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述抗氧剂选用抗氧剂1010和抗氧剂264中的一种或两种。
8.根据权利要求1所述的一种单层高透湿的TPU薄膜,其特征在于:所述阻燃剂选用硅酮粉和十溴二苯乙烷中的一种或两种。
9.权利要求1-8任一项所述的一种单层高透湿的TPU薄膜的制备方法,其特征在于:包括以下步骤:
混料:将聚醚多元醇、二苯甲烷二异氰酸酯、1,4-丁二醇、聚丙烯中空纤维、润滑剂、疏水剂、增韧剂、阻燃剂、抗氧剂混合,在180-220℃下熔炼混合,熔炼时间为20-30min,得到一级混料;
发泡:将碳酸铵和一级混料共混发泡,发泡时间为10-20min,发泡温度为150-180℃,得到二级混合物;
挤出成型:将二级混合物挤出,并进行吹塑,形成TPU薄膜,并自然冷却。
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