CN116217875A - 一种用于汽车地毯的低密度聚氨酯泡沫材料 - Google Patents
一种用于汽车地毯的低密度聚氨酯泡沫材料 Download PDFInfo
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- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 75
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- -1 phenyl hydrogen Chemical compound 0.000 claims abstract description 17
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Abstract
本申请涉及聚氨酯材料技术领域,更具体地说,它涉及一种用于汽车地毯的低密度聚氨酯泡沫材料。一种用于汽车地毯的低密度聚氨酯泡沫材料,由包含以下重量份的原料组成:聚醚多元醇80‑120份、催化剂0.5‑2份、稳泡剂0.5‑3份、发泡剂2‑5份、交联剂0.5‑3份、含苯基二异氰酸酯40‑80份;稳泡剂由苯基含氢硅油和烯基聚醚按照质量比为(2‑5):1反应制得,本申请制得的低密度聚氨酯泡沫材料具有良好的力学性能。
Description
技术领域
本申请涉及聚氨酯材料技术领域,更具体地说,它涉及一种用于汽车地毯的低密度聚氨酯泡沫材料。
背景技术
随着中国汽车工业的蓬勃发展,汽车内饰材料的舒适性、安全性受到了消费者越来越多的关注,汽车地毯作为汽车重要的内饰件,其缓冲性、隔热保温、吸音降噪等性能很大程度上影响着整车舒适性和安全性。
聚氨酯泡沫材料因其良好的性能而被广泛应用于汽车地毯的制造中,聚氨酯泡沫用于汽车地毯中有如下优势:第一,加工方便,其加工是一个由液体转变为固体的过程,因此只要有模具,聚氨酯就可以做出与汽车内部贴合性较好的产品;第二,具有优异的弹性,能够起到缓冲减震的作用;第三,泡沫多孔结构能够起到隔热保温、吸音降噪的作用,提高汽车的乘坐舒适性。
近年来,由于汽车轻量化的发展趋势和厂家降低生产成本的需求,汽车地毯生产商家纷纷提出降低聚氨酯泡沫密度的需求,各种低密度聚氨酯泡沫材料应运而生。为了降低聚氨酯泡沫材料的密度,在其发泡过程中通常会增加发泡剂的用量,提高发泡数量。然而,发泡剂用量的增多可能导致泡沫容易塌泡,使得聚氨酯泡沫材料的力学性能受到损失。
发明内容
为了解决低密度聚氨酯泡沫力学性能不佳的问题,本申请提供一种用于汽车地毯的低密度聚氨酯泡沫材料。
第一方面,本申请提供一种用于汽车地毯的低密度聚氨酯泡沫材料,采用如下的技术方案:
一种用于汽车地毯的低密度聚氨酯泡沫材料,由包含以下重量份的原料组成:聚醚多元醇80-120份、催化剂0.5-2份、稳泡剂0.5-3份、发泡剂2-5份、交联剂0.5-3份、含苯基二异氰酸酯40-80份;
所述稳泡剂由苯基含氢硅油和烯基聚醚按照质量比为(2-5):1反应制得。
通过采用上述技术方案,一方面,交联剂上含有活性基团,这些活性基团同二异氰酸酯发生交联反应,产生网络结构,能够提高低密度聚氨酯泡沫的力学性能;另一方面,苯基含氢硅油与烯基聚醚反应制得稳泡剂,该稳泡剂由亲水的聚醚链段与亲油的苯基硅油链段组成,亲油链段含有苯基,与含苯基二异氰酸酯的相容性较好,使得该稳泡剂具有优异的亲油性和亲水性能,能够较好地乳化发泡原料,改善原料反应前、反应中的相容状态,从而使发泡反应和交联反应顺利进行;该稳泡剂还能够降低泡孔壁内的应力使得薄化的泡孔壁稳定,防止快速长大的泡沫塌陷,直至泡孔壁具有足够的强度、能够自支撑为止;综上可知,交联剂与稳泡剂共同提升了低密度聚氨酯泡沫材料的力学性能。
优选的,所述聚醚多元醇的重量份为80-100份。
优选的,所述催化剂的重量份为0.5-1份。
优选的,所述苯基含氢硅油和烯基聚醚的质量比为(4-5):1。
优选的,当苯基含氢硅油和烯基聚醚按照上述质量比反应时,能够更好地平衡稳泡剂的亲水和亲油能力,从而进一步改善原料反应前、中的相容状态,进一步保证发泡反应和交联反应的顺利进行,从而进一步提升了低密度聚氨酯泡沫材料的力学性能。
优选的,所述交联剂为三乙醇胺、异丙醇胺、丙三醇、三羟甲基丙烷中的一种或多种。
优选的,所述交联剂为三乙醇胺和/或三羟甲基丙烷。
通过采用上述技术方案,三乙醇胺和三羟甲基丙烷在提高聚氨酯的力学性能方面协同增效。
优选的,所述交联剂由多羟基化合物与含羟基无机填料按照质量比为(10-15):1反应制得;所述多羟基化合物为三乙醇胺、丙三醇、三羟甲基丙烷中的一种或多种;所述含羟基无机填料为氧化石墨烯、白炭黑、羟基化碳纳米管中的一种或多种。
通过采用上述技术方案,过量的多羟基化合物与含羟基无机填料反应,制得交联剂,该交联剂上含有多个活性基团,这些活性基团能够参与聚氨酯泡沫的交联反应,形成力学性能较好的交联网络;此外,该交联剂上接枝有无机填料,这些无机填料分散在聚氨酯泡沫材料中,能够作为物理交联点,当聚氨酯泡沫材料受到外力时,这些无机填料能够耗散一部分应力,使得聚氨酯泡沫材料不易被外力破坏,从而进一步提高了低密度聚氨酯泡沫材料的力学性能。
优选的,所述含羟基无机填料为白炭黑和/或羟基化碳纳米管。
通过采用上述技术方案,白炭黑和羟基化碳纳米管在提高聚氨酯力学性能方面协同增效。
优选的,所述催化剂由胺类催化剂和锡类催化剂按照质量比为(2-5):1复配制得。
通过采用上述技术方案,胺类催化剂和锡类催化剂按照上述比例复配制得催化剂,再将该催化剂用于聚氨酯泡沫的生产,能够使得反应速度适中,得到孔径大小均匀的泡孔,保证生产效率的同时,降低因反应速度过快而出现塌泡的可能性,进而提高了低密度聚氨酯泡沫材料的力学性能。
综上所述,本申请具有以下有益效果:
1、本申请的原料中包含交联剂和稳泡剂,一方面,交联剂上含有活性基团,这些活性基团同二异氰酸酯发生交联反应,产生网络结构,能够提高低密度聚氨酯泡沫的力学性能;另一方面,苯基含氢硅油与烯基聚醚反应制得稳泡剂,该稳泡剂由亲水的聚醚链段与亲油的苯基硅油链段组成,亲油链段含有苯基,与含苯基二异氰酸酯的相容性较好,使得该稳泡剂具有优异的亲油性和亲水性能,能够较好地乳化发泡原料,改善原料反应前、反应中的相容状态,从而使发泡反应和交联反应顺利进行;该稳泡剂还能够降低泡孔壁内的应力使得薄化的泡孔壁稳定,防止快速长大的泡沫塌陷,直至泡孔壁具有足够的强度、能够自支撑为止;综上可知,交联剂与稳泡剂共同提升了低密度聚氨酯泡沫材料的力学性能。
2、本申请中优选采用由多羟基化合物与含羟基无机填料反应制得的交联剂,过量的多羟基化合物与含羟基无机填料反应,制得交联剂,该交联剂上含有多个活性基团,这些活性基团能够参与聚氨酯泡沫的交联反应,形成力学性能较好的交联网络;此外,该交联剂上接枝有无机填料,这些无机填料分散在聚氨酯泡沫材料中,能够作为物理交联点,当聚氨酯泡沫材料受到外力时,这些无机填料能够耗散一部分应力,使得聚氨酯泡沫材料不易被外力破坏,从而进一步提高了低密度聚氨酯泡沫材料的力学性能。
具体实施方式
以下结合实施例对本申请做进一步详细说明。
若无特殊说明,以下实施例以及对比例中所用的原料规格详见表1。
表1.原料规格信息
原料 | 规格 |
苯基含氢硅油 | 分子量:2000 |
烯丙基聚醚 | 型号:DX-600 |
聚醚多元醇 | 分子量:5000 |
胺类催化剂 | 型号:LE530 |
无苯基含氢硅油 | 型号:JN-202 |
稳泡剂的制备例
制备例A
稳泡剂,按照如下步骤制得:
取2kg苯基含氢硅油、在氮气保护下升温至90℃,在1h内滴加1kg烯丙基聚醚和0.02g氯铂酸催化剂,滴加完毕后降温至85℃,保温反应5h,停止加热,真空抽除低沸点物质,降温至25℃,得到稳泡剂。
制备例B
稳泡剂,与制备例A的区别点在于,苯基含氢硅油和烯丙基聚醚的用量不同,具体用量如下:
苯基含氢硅油2.5kg、烯丙基聚醚0.5kg。
制备例C
稳泡剂,与制备例A的区别点在于,苯基含氢硅油和烯丙基聚醚的用量不同,具体用量如下:
苯基含氢硅油2.4kg、烯丙基聚醚0.6kg。
稳泡剂的制备对比例
制备对比例1
稳泡剂,与制备例A的区别点在于,本制备对比例将苯基含氢硅油等质量更换为无苯基含氢硅油。
交联剂的制备例
制备例1
交联剂,按照如下步骤制得
取1kg三乙醇胺与2kg水混合,加入100g氧化石墨烯,超声分散20min,干燥,得到交联剂。
制备例2
交联剂,按照如下步骤制得
取1.5kg三乙醇胺与2kg水混合,加入100g氧化石墨烯,超声分散20min,干燥,得到交联剂。
制备例3
交联剂,按照如下步骤制得
取1.2kg三乙醇胺与2kg水混合,加入100g氧化石墨烯,超声分散20min,干燥,得到交联剂。
制备例4
交联剂,与制备例1的区别点在于,本制备例将三乙醇胺等质量更换为丙三醇。
制备例5
交联剂,与制备例1的区别点在于,本制备例将氧化石墨烯等质量更换为白炭黑。
制备例6
交联剂,与制备例1的区别点在于,本制备例将氧化石墨烯等质量更换为羟基化碳纳米管。
制备例7
交联剂,与制备例1的区别点在于,本制备例将氧化石墨烯更换为50g白炭黑+50g羟基化碳纳米管。
实施例
实施例1
一种用于汽车地毯的低密度聚氨酯泡沫材料,其配方如下:
聚醚多元醇8kg、胺类催化剂0.05kg、稳泡剂0.05kg、发泡剂0.2kg、交联剂0.05kg、二苯基甲烷二异氰酸酯4kg。
一种用于汽车地毯的低密度聚氨酯泡沫材料,按照如下步骤制得:
S1:在25℃,将聚醚多元醇、催化剂、制备例A制得的稳泡剂、发泡剂水、制备例1制得的交联剂混合,混合搅拌1h,形成A料;
S2:在25℃,将二苯基甲烷二异氰酸酯加入另一搅拌釜中,搅拌混合1h,形成B料;
S3:在25℃,将A料与B料混合,发泡、熟化,得到低密度聚氨酯泡沫材料。
实施例2
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例2制得的交联剂。
实施例3
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例3制得的交联剂。
实施例4
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例4制得的交联剂。
实施例5
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例5制得的交联剂。
实施例6
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例6制得的交联剂。
实施例7
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为制备例7制得的交联剂。
实施例8
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为三乙醇胺。
实施例9
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂等质量更换为三羟甲基丙烷。
实施例10
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,交联剂的来源不同,本实施例将制备例1制得的交联剂更换为0.025kg的三乙醇胺+0.025kg的三羟甲基丙烷。
实施例11
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,稳泡剂的来源不同,本实施例将制备例A制得的稳泡剂等质量更换为制备例B制得的稳泡剂。
实施例12
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,稳泡剂的来源不同,本实施例将制备例A制得的稳泡剂等质量更换为制备例C制得的稳泡剂。
实施例13
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,催化剂的选择不同,本实施例将胺类催化剂等质量更换为二丁基锡二月桂酸酯。
实施例14
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,催化剂的选择不同,本实施例将胺类催化剂替换为0.033kg的胺类催化剂+0.017kg的二丁基锡二月桂酸酯。
实施例15
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,催化剂的选择不同,本实施例将胺类催化剂替换为0.042kg的胺类催化剂+0.008kg的二丁基锡二月桂酸酯。
实施例16-17
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,原料的组分不同,具体组分如下表2所示:
表2.低密度聚氨酯泡沫材料的原料组成
对比例
对比例1
一种用于汽车地毯的低密度聚氨酯泡沫材料,与实施例1的区别点在于,稳泡剂的来源不同,本实施例将制备例A制得的稳泡剂等质量更换为制备对比例1制得的稳泡剂。
检测方法
参照GB/T 6344—2008,对实施例1-17和对比例1制得的低密度聚氨酯泡沫材料的拉伸强度进行检测,以此表征其力学性能。具体检测结果如下表3所示:
参照GB/T 6343—1995,对实施例1-17和对比例1制得的低密度聚氨酯泡沫材料的密度进行检测,具体检测结果如下表3所示:
表3.低密度聚氨酯泡沫材料的性能检测
由表3可以看出,本申请实施例制得的低密度聚氨酯泡沫材料的拉伸强度≥81.2kPa、密度≤36.9kg/m3,这表明本申请实施例制得的聚氨酯泡沫材料的密度较低,且拉伸强度较高,力学性能较佳。
结合实施例1和对比例1并结合表3可以看出,实施例1制得的低密度聚氨酯泡沫材料的拉伸强度远高于对比例1,这可能是因为,实施例1中选用的是制备例A制得的稳泡剂,制备例A中,选用苯基含氢硅油与烯基聚醚反应制得稳泡剂,该稳泡剂由亲水的聚醚链段与亲油的苯基硅油链段组成,亲油链段含有苯基,与含苯基二异氰酸酯的相容性较好,使得该稳泡剂具有优异的亲油性和亲水性能,能够较好地乳化发泡原料,改善原料反应前、反应中的相容状态,从而使发泡反应和交联反应顺利进行;该稳泡剂还能够降低泡孔壁内的应力使得薄化的泡孔壁稳定,防止快速长大的泡沫塌陷,直至泡孔壁具有足够的强度、能够自支撑为止,从而提升了低密度聚氨酯泡沫材料的力学性能。
结合实施例1和实施例8-10并结合表3可以看出,实施例1制得的低密度聚氨酯泡沫材料的拉伸强度高于实施例8-10,这可能是因为,实施例1选用的交联剂与实施例8-10选用的不同,实施例1中的交联剂由多羟基化合物与含羟基无机填料按照质量比为(10-15):1反应制得。多羟基化合物与含羟基无机填料反应,制得交联剂,该交联剂上含有多个活性基团,这些活性基团能够参与聚氨酯泡沫的交联反应,形成力学性能较好的交联网络;此外,该交联剂上接枝有无机填料,这些无机填料分散在聚氨酯泡沫材料中,能够作为物理交联点,当聚氨酯泡沫材料受到外力时,这些无机填料能够耗散一部分应力,使得聚氨酯泡沫材料不易被外力破坏,从而进一步提高了低密度聚氨酯泡沫材料的力学性能。
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)
1.一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:由包含以下重量份的原料组成:聚醚多元醇80-120份、催化剂0.5-2份、稳泡剂0.5-3份、发泡剂2-5份、交联剂0.5-3份、含苯基二异氰酸酯40-80份;
所述稳泡剂由苯基含氢硅油和烯基聚醚按照质量比为(2-5):1反应制得。
2.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述聚醚多元醇的重量份为80-100份。
3.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述催化剂的重量份为0.5-1份。
4.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述苯基含氢硅油和烯基聚醚的质量比为(4-5):1。
5.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述交联剂为三乙醇胺、异丙醇胺、丙三醇、三羟甲基丙烷中的一种或多种。
6.根据权利要求5所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述交联剂为三乙醇胺和/或三羟甲基丙烷。
7.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述交联剂由多羟基化合物与含羟基无机填料按照质量比为(10-15):1反应制得;所述多羟基化合物为三乙醇胺、丙三醇、三羟甲基丙烷中的一种或多种;所述含羟基无机填料为氧化石墨烯、白炭黑、羟基化碳纳米管中的一种或多种。
8.根据权利要求7所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述含羟基无机填料为白炭黑和/或羟基化碳纳米管。
9.根据权利要求1所述的一种用于汽车地毯的低密度聚氨酯泡沫材料,其特征在于:所述催化剂由胺类催化剂和锡类催化剂按照质量比为(2-5):1复配制得。
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JPH08156143A (ja) * | 1994-11-30 | 1996-06-18 | Rojiyaasu Inoatsuku:Kk | 電子写真装置用転写ローラ |
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