CN107353388A - 高阻燃性高回弹聚氨酯座椅泡沫组合物及发泡工艺 - Google Patents

高阻燃性高回弹聚氨酯座椅泡沫组合物及发泡工艺 Download PDF

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CN107353388A
CN107353388A CN201710499455.6A CN201710499455A CN107353388A CN 107353388 A CN107353388 A CN 107353388A CN 201710499455 A CN201710499455 A CN 201710499455A CN 107353388 A CN107353388 A CN 107353388A
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刘恩
王宏立
严鹏
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Chongqing City Grand Vertical Motorcycle Manufacturing Co Ltd
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Abstract

本发明公开了一种高阻燃性高回弹聚氨酯座椅泡沫组合物,由组分A和B按重量比100:30~35组成,组分A原料如下:阻燃聚醚多元醇40~60份,普通高活性聚醚多元醇60~40份,有机硅泡沫稳定剂0.8~1份、发泡催化剂0.08~0.12份,平衡催化剂0.25~0.35份,交联剂1.1~1.3份,水2.5~3.5份,纳米三氧化二锑4~10份,阻燃聚醚多元醇和普通高活性聚醚多元醇加起来为100份,交联剂为二乙醇胺和三乙醇胺;组分B由甲苯二异氰酸酯与多苯基多亚甲基多异氰酸酯混合得到,其中甲苯二异氰酸酯占70~80%,多苯基多亚甲基多异氰酸酯占20~30%。还公开了该泡沫的发泡工艺。

Description

高阻燃性高回弹聚氨酯座椅泡沫组合物及发泡工艺
技术领域
本发明涉及座椅泡沫技术领域,具体涉及一种高阻燃性高回弹聚氨酯座椅泡沫组合物及发泡工艺。
背景技术
汽车座椅泡沫阻燃性要求不高,美国要求燃烧速率低于100mm/min即可,我国国内部分车企要求燃烧速率低于80mm/min即可,一般聚氨酯高回弹泡沫无需做任何处理直接就可达到该阻燃要求,甚至直接达到离火即熄。但是航空座椅泡沫、高铁座椅泡沫对阻燃性要求非常高。现有工艺技术仅使用阻燃聚醚多元醇并不能完全保证氧指数能达到28%,要保证氧指数能达到28%就必须要添加无机阻燃剂或其它含卤素或含磷阻燃剂或三聚氰胺,无论是添加液态的含磷阻燃剂还是无机粉末阻燃剂或是三聚氰胺,虽然阻燃性能可能能达到要求,但都是在牺牲其它物理机械性能或工艺操作性能换取来的。目前国内高铁座椅泡沫参考英国标准BS6853或德国标准DIN5510而设计,国内等同标准测试指标如下:
1、烟密度(GB/T8323.2:2008):DS1.5≤100,DS4≤200
2、氧指数(GB/T2406.2:2009):≧28%
3、燃烧性能试验(UIC564-2:1991):A级,燃烧长度L≤25mm,无滴落
4、毒性气体分析(TB/T3237-2010):
CO<3500PPM CO2<50000PPM HF<100PPM HBr<100PPM
HCL<100PPM NOx<100PPM SO2<100PPM HCN<100PPM
然而目前能达到如此标准的座椅泡沫配方及工艺较少,很多制造企业无法制造出能满足此标准要求的产品。
发明内容
本发明的目的是针对上述问题,提供一种具有高阻燃性、高回弹性的聚氨酯座椅泡沫组合物及发泡工艺。
本发明解决其技术问题采用的技术方案:
一种高阻燃性高回弹聚氨酯座椅泡沫组合物,由组分A和B按重量比100:30~35组成,其中,
组分A以重量份数计,原料如下:
阻燃聚醚多元醇40~60份,普通高活性聚醚多元醇60~40份,有机硅泡沫稳定剂0.8~1份、发泡催化剂0.08~0.12份,平衡催化剂0.25~0.35份,交联剂1.1~1.3份,水2.5~3.5份,纳米三氧化二锑4~10份,所述阻燃聚醚多元醇和普通高活性聚醚多元醇加起来为100份,所述交联剂为二乙醇胺和三乙醇胺;
组分B由甲苯二异氰酸酯与多苯基多亚甲基多异氰酸酯混合得到,其中甲苯二异氰酸酯占组分B的重量百分比为70~80%,多苯基多亚甲基多异氰酸酯占组分B的重量百分比为20~30%。
所述阻燃聚醚多元醇羟值为22-28mg KOH/g,所述普通高活性聚醚多元醇羟值在32-36mg KOH/g。
所述有机硅泡沫稳定剂为L-3002或者8715或者6070,所述发泡催化剂为A-1,所述平衡催化剂为三乙烯二胺。
一种高阻燃性高回弹聚氨酯座椅泡沫发泡工艺,包括如下步骤:
(1)配料:
配组分A:取权利要求1至3任一所述的组分A,将阻燃聚醚多元醇和普通高活性聚醚多元醇按比例加入配料釜中,开启高速搅拌,缓慢加入纳米三氧化二锑,持续搅拌60-90分钟,再降低搅拌速度,加入有机硅泡沫稳定剂、发泡催化剂、平衡催化剂、交联剂、水,搅拌30~50分钟;
配组分B:取权利要求1至3任一所述的组分B,混合均匀即得;
(2)浇注发泡:
将上述配制的组分A和组分B保持料温20~30℃,按重量比100:(30~35)抽到低压发泡机里,合模保压时间4~6min,模具温度60~70℃;
(3)开模取件。
本发明的有益效果是:1、采用了纳米级阻燃剂与阻燃聚醚并用,以确保阻燃效果,使得产品的氧指数能达到28.5%以上、具有高阻燃性,且大幅减少了阻燃剂的用量;2、纳米级阻燃剂起到纳米填料作用,能有效改善泡沫制品的耐温性及撕裂、拉伸强度等物理机械性能。本发明不仅阻燃效果好,而且对现有产品综合性能有较好的改善。本发明能够占领市场先机,市场前景好。
具体实施方式
下面结合实施例对本发明作进一步说明,但并不因此而限制本发明。
实施例1制备高阻燃性高回弹聚氨酯座椅泡沫
(1)配料:
配A料:原料及用量:阻燃聚醚多元醇(3028)40Kg,高活性聚醚多元醇(330N)60Kg,有机硅泡沫稳定剂L-30020.8Kg、发泡催化剂A-10.08Kg,平衡催化剂三乙烯二胺0.35Kg,交联剂二乙醇胺1.1Kg,水(化学发泡剂)2.5Kg,纳米阻燃剂三氧化二锑4Kg。A料的制备:将阻燃聚醚多元醇和高活性聚醚多元醇按比例加入配料釜中,开启高速搅拌(130-160 RPM),缓慢加入纳米阻燃剂(5分钟加完)持续搅拌60-90分钟,再降低搅拌速度(60-80 RPM),按顺序依次加入有机硅泡沫稳定剂、催化剂、交联剂、发泡剂,再持续搅拌30分钟。
配B料:甲苯二异氰酸酯(TDI)与多苯基多亚甲基多异氰酸酯(粗MDI)按重量百分比TDI占70%,MDI占比30%混合均匀即得B料。
(2)浇注发泡:
将上述配制的A料和B料抽到低压发泡机里,保持料温20-30℃,按A:B=100∶30通过发泡机过滤器、计量泵、混合头浇注到模具里发泡。浇注重量按泡沫理论密度80Kg/m3计算并加上5%损耗即可。模具温度60-70℃。合模保压时间4-6min。
(3)开模取件、破孔,产品芯密度75Kg/m3左右。
产品性能指标:
A、烟密度
B、氧指数:28.5%。
C、燃烧性能试验
项目 1 2 3 4 平均值
燃烧时间(s) 0 0 0 0 0
阴燃时间(s) 0 0 0 0 0
燃烧长度(mm) 24 25 25 25 24
燃烧滴落物成碎片 -
分级:A级
D、燃烧气体毒性分析
实施例2制备高阻燃性高回弹聚氨酯座椅泡沫
(1)配料:
配A料:原料及用量:阻燃聚醚多元醇(POP290)50Kg,高活性聚醚多元醇(1618)50Kg,有机硅泡沫稳定剂(8715)0.9Kg、发泡催化剂A-1 0.1Kg,平衡催化剂三乙烯二胺0.3Kg,交联剂二乙醇胺1.2Kg,水3Kg,纳米阻燃剂三氧化二锑5Kg。A料的制备:将阻燃聚醚多元醇和高活性聚醚多元醇按比例加入配料釜中,开启高速搅拌(130-160RPM),缓慢加入纳米阻燃剂(5分钟加完)持续搅拌60-90分钟,再降低搅拌速度(60-80RPM),按顺序依次加入有机硅泡沫稳定剂、催化剂、交联剂、发泡剂,再持续搅拌40分钟。
配B料:甲苯二异氰酸酯(TDI)与多苯基多亚甲基多异氰酸酯(粗MDI)按重量百分比TDI占80%,MDI占比20%混合均匀即得B料。
(2)浇注发泡
将上述配制的A料和B料抽到低压发泡机里,保持料温20-30℃,按A:B=100:32通过发泡机过滤器、计量泵、混合头浇注到模具里发泡。浇注重量按泡沫理论密度80Kg/m3计算并加上5%损耗即可。模具温度60-70℃。合模保压时间4-6min。
(3)开模取件、破孔,产品芯密度75Kg/m3左右。
产品性能指标:
A、烟密度
B、氧指数:30.5%。
C、燃烧性能试验
D、燃烧气体毒性分析
实施例3制备高阻燃性高回弹聚氨酯座椅泡沫
(1)配料
配A料:原料及用量:阻燃聚醚多元醇(3028)60Kg,高活性聚醚多元醇(3135)40Kg,有机硅泡沫稳定剂(6070)1Kg、发泡催化剂A-1 0.12Kg,平衡催化剂三乙烯二胺0.25Kg,交联剂三乙醇胺1.3Kg,水3.5Kg,纳米阻燃剂三氧化二锑10Kg。A料的制备:将阻燃聚醚多元醇和高活性聚醚多元醇按比例加入配料釜中,开启高速搅拌(130-160RPM),缓慢加入纳米阻燃剂(5分钟加完)持续搅拌60-90分钟,再降低搅拌速度(60-80RPM),按顺序依次加入有机硅泡沫稳定剂、催化剂、交联剂、发泡剂,再持续搅拌50分钟。
配B料:甲苯二异氰酸酯(TDI)与多苯基多亚甲基多异氰酸酯(粗MDI)按重量百分比TDI占75%,MDI占比25%混合均匀即得B料。
(2)浇注发泡
将上述配制的A料和B料抽到低压发泡机里,保持料温20-30℃,按A:B=100:35通过发泡机过滤器、计量泵、混合头浇注到模具里发泡。浇注重量按泡沫理论密度80Kg/m3计算并加上5%损耗即可。模具温度60-70℃。合模保压时间4-6min。
(3)开模取件、破孔,产品芯密度75Kg/m3左右。
产品性能指标:
A、烟密度
B、氧指数:29.5%。
C、燃烧性能试验
D、燃烧气体毒性分析

Claims (4)

1.一种高阻燃性高回弹聚氨酯座椅泡沫组合物,其特征在于:由组分A和B按重量比100:30~35组成,其中,
组分A以重量份数计,原料如下:
阻燃聚醚多元醇40~60份,普通高活性聚醚多元醇60~40份,有机硅泡沫稳定剂0.8~1份、发泡催化剂0.08~0.12份,平衡催化剂0.25~0.35份,交联剂1.1~1.3份,水2.5~3.5份,纳米三氧化二锑4~10份,所述阻燃聚醚多元醇和普通高活性聚醚多元醇加起来为100份,所述交联剂为二乙醇胺和三乙醇胺;
组分B由甲苯二异氰酸酯与多苯基多亚甲基多异氰酸酯混合得到,其中甲苯二异氰酸酯占组分B的重量百分比为70~80%,多苯基多亚甲基多异氰酸酯占组分B的重量百分比为20~30%。
2.如权利要求1所述的高阻燃性高回弹聚氨酯座椅泡沫发泡组合物,其特征在于:所述阻燃聚醚多元醇羟值为22-28mg KOH/g,所述普通高活性聚醚多元醇羟值在32-36mg KOH/g。
3.如权利要求1所述的高阻燃性高回弹聚氨酯座椅泡沫发泡组合物,其特征在于:所述有机硅泡沫稳定剂为L-3002或者8715或者6070,所述发泡催化剂为A-1,所述平衡催化剂为三乙烯二胺。
4.一种高阻燃性高回弹聚氨酯座椅泡沫发泡工艺,其特征在于:包括如下步骤:
(1)配料:
配组分A:取权利要求1至3任一所述的组分A,将阻燃聚醚多元醇和普通高活性聚醚多元醇按比例加入配料釜中,开启高速搅拌,缓慢加入纳米三氧化二锑,持续搅拌60-90分钟,再降低搅拌速度,加入有机硅泡沫稳定剂、发泡催化剂、平衡催化剂、交联剂、水,搅拌30~50分钟;
配组分B:取权利要求1至3任一所述的组分B,混合均匀即得;
(2)浇注发泡:
将上述配制的组分A和组分B保持料温20~30℃,按重量比100:(30~35)抽到低压发泡机里,合模保压时间4~6min,模具温度60~70℃;
(3)开模取件。
CN201710499455.6A 2017-06-27 2017-06-27 高阻燃性高回弹聚氨酯座椅泡沫组合物及发泡工艺 Pending CN107353388A (zh)

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Application publication date: 20171117