CN109181269A - 一种汽车座椅海绵的制备方法 - Google Patents
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Abstract
本发明涉及一种汽车座椅海绵的制备方法,属于装饰材料技术领域。本发明利用硅氢缩合反应制备硅橡胶泡沫,甲基含氢硅油由内水相向外水相扩散到油相与外水相的界面,并与吸附在相界面的液体硅橡胶,在铂系催化剂的作用下发生硅氢加成和缩合反应,进而沉积在相界面完成对三元乙丙橡胶的包覆形成微胶囊,硅橡胶主链由Si‑O‑Si键交替连接形成,由于特殊的骨架结构,在铂系催化剂的作用下,乙烯基硅油与含氢硅油发生交联反应,羟基硅油与含氢硅油产生发泡气体氢气进行发泡反应,加入聚乙二醇,聚乙二醇中的羟基与含氢硅油可以发生反应,形成硅橡胶泡沫材料;本发明留了硅橡胶独特的物理性能的同时,也具有海绵轻质、隔热、柔韧性和回弹性等优点。
Description
技术领域
本发明涉及一种汽车座椅海绵的制备方法,属于装饰材料技术领域。
背景技术
汽车座椅海绵是汽车座椅的重要组成部分,它直接关系到司机与乘员在乘车中的舒适程度。目前,汽车用聚氨酯海绵均为单一密度单一硬度海绵产品,常用的MDI体系座椅海绵的力学性能如下:25%压陷硬度为(150±20)N,65%压陷硬度为(390±20)N,密度为(50±5)kg/m3。该海绵虽然一定程度上满足了乘坐的要求,但是这种产品当前已无法满足乘客的舒适性要求。汽车座椅海绵如果硬一点,会使人乘坐不舒适,长时间使用,会使乘坐者感觉比较累;如果软一点,海绵支撑性不足,与面料搭配效果较差,同时会造成座椅侧滑,影响安全。
海绵是聚氨酯泡沫塑料的一种,属于软质聚氨酯泡沫塑料,因其多孔状蜂窝结构,具有优良的柔软性、弹性、吸水性、耐水性的特点,被广泛用于沙发、床垫、服装、软包装等行业。随着汽车行业的发展,汽车座椅用海绵也越来越受到人们的重视。
汽车座椅用海绵多采用高回弹海绵,由聚醚型组合料与异氰酸酯类原料进行冷熟化模塑发泡成型。目前,汽车座椅用海绵主要有以下几种类型:1)TDI(二甲基二异氰酸酯)体系座椅海绵:此类型的座椅海绵相对密度低,发泡体积大,手感舒适;但是其支撑力不足,回弹性不足,原料有剧毒,生产过程中会散发令人难以忍受的气味,严重损害人们的身体健康。2)TM(二甲基二异氰酸酯与二苯基甲烷二异氰酸酯混合)体系座椅海绵:此类海绵手感舒适,回弹性好,发泡体积次于TDI体系;但是其原料中仍还有部分剧毒的TDI原料,生产车间气味仍然很大。3)MDI(二苯基甲烷二异氰酸酯)体系座椅海绵:此类座椅海绵回弹性较好,压陷硬度高,原料气味较小,因此得到了较大的发展;但是目前的MDI体系汽车座椅海绵产品的气味、TVOC(总挥发性有机化合物)含量及回弹性能还不能满足人们对于汽车座椅海绵环保性能和力学性能的要求。
发明内容
本发明所要解决的技术问题:针对TDI(二甲基二异氰酸酯)体系座椅海绵;支撑力不足,回弹性不足,原料有剧毒,生产过程中会散发令人难以忍受的气味,严重损害人们的身体健康的问题,提供了一种汽车座椅海绵的制备方法。
一种汽车尾气清洁剂的制备方法的制备方法为解决上述技术问题,本发明采用的技术方案是:
(1)按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取10~18份溶胶、5~7份甲基含氢硅油、0.2~0.3份铂催化剂、0.1~0.2份聚乙二醇、1~2份Span-80、6~12份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在8000~10000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在600~800r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤3~5次,加入促进剂TMTD并硫化,在-15~-20℃冷冻干燥5~8h,得微球材料;
(2)按重量份数计,分别称取聚醚多元醇50~80份、接枝聚醚20~50份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.2~0.3份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.2~0.5份、双二甲胺基丙基胺异丙醇0.5~0.7份、发泡剂3~4份、交联剂1~2份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为80~100℃下将搅拌釜抽真空,搅拌3~5h,冷却至室温得组合料;
(3)按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,保温保压处理,成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品80%~90%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
步骤(1)所述的硫化处理为在温度为110~170℃、压力为0.4~0.6MPa下硫化。
步骤(2)所述的聚醚多元醇为环氧乙烷-环氧丙烷类共聚聚醚多元醇、三羟甲基丙烷与环氧丙烷、环氧乙烷的共聚多元醇中的一种。
步骤(2)所述的接枝聚醚为环氧丙烷类接枝聚醚。
步骤(2)所述的发泡剂为偶氮二甲肽胺、2,2-偶氮二异丁腈和碳酸氢钠中的一种。
步骤(2)所述的交联剂为二乙醇胺、三乙醇胺中的任意一种。
步骤(3)所述的保温保压处理为在模具温度50~60℃、0.4~0.6MPa压力条件下保温保压3~5min。
本发明与其他方法相比,有益技术效果是:
(1)本发明利用硅氢缩合反应制备硅橡胶泡沫,甲基含氢硅油由内水相向外水相扩散到油相与外水相的界面,并与吸附在相界面的液体硅橡胶,在铂系催化剂的作用下发生硅氢加成和缩合反应,进而沉积在相界面完成对三元乙丙橡胶的包覆形成微胶囊,硅橡胶主链由Si-O-Si键交替连接形成,侧链上连接有机基团,属于一种半有机半无机的高分子,由于特殊的骨架结构,硅橡胶具有许多独特的性能,包括良好的介电性能、耐化学性、耐紫外线和机械稳定性等,在铂系催化剂的作用下,含有Si-CH=CH2键的乙烯基硅油与含有Si-H键的含氢硅油发生交联反应,含有Si-OH键的羟基硅油与含有Si-H键的含氢硅油产生发泡气体氢气进行发泡反应,加入聚乙二醇,聚乙二醇中的羟基与含氢硅油可以发生反应,形成孔隙率高、泡孔均匀度较高、泡孔结构易控制的硅橡胶泡沫材料;
(2)本发明中聚醚活性较大,生产出来的海绵泡孔直径大小混合分布,骨架粗细不同,有很大的开孔率,在受压时会在不同形变状态下产生不同支撑力的反弹力,液体硅橡胶在促进剂的作用下,经过高温硫化成弹性体,保留了硅橡胶独特的物理性能的同时,也具有海绵轻质、隔热、柔韧性和回弹性等优点。
具体实施方式
按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取10~18份溶胶、5~7份甲基含氢硅油、0.2~0.3份铂催化剂、0.1~0.2份聚乙二醇、1~2份Span-80、6~12份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在8000~10000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在600~800r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤3~5次,加入促进剂TMTD,在温度为110~170℃、压力为0.4~0.6MPa下硫化,在-15~-20℃冷冻干燥5~8h,得微球材料;按重量份数计,分别称取聚醚多元醇50~80份、接枝聚醚20~50份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.2~0.3份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.2~0.5份、双二甲胺基丙基胺异丙醇0.5~0.7份、发泡剂3~4份、交联剂1~2份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为80~100℃下将搅拌釜抽真空,搅拌3~5h,冷却至室温得组合料;按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,在模具温度50~60℃、0.4~0.6MPa压力条件下保温保压3~5min成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品80%~90%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
实例1
按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取10份溶胶、5份甲基含氢硅油、0.2份铂催化剂、0.1份聚乙二醇、1份Span-80、6份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在8000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在600r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤3次,加入促进剂TMTD,在温度为110℃、压力为0.4MPa下硫化,在-15℃冷冻干燥5h,得微球材料;按重量份数计,分别称取聚醚多元醇50份、接枝聚醚20份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.2份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.2份、双二甲胺基丙基胺异丙醇0.5份、发泡剂3份、交联剂1份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为80℃下将搅拌釜抽真空,搅拌3h,冷却至室温得组合料;按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,在模具温度50℃、0.4MPa压力条件下保温保压3min成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品80%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
实例2
按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取14份溶胶、6份甲基含氢硅油、0.25份铂催化剂、0.15份聚乙二醇、1.5份Span-80、9份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在9000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在700r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤4次,加入促进剂TMTD,在温度为140℃、压力为0.5MPa下硫化,在-17℃冷冻干燥6.5h,得微球材料;按重量份数计,分别称取聚醚多元醇65份、接枝聚醚35份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.25份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.35份、双二甲胺基丙基胺异丙醇0.6份、发泡剂3.5份、交联剂1.5份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为90℃下将搅拌釜抽真空,搅拌4h,冷却至室温得组合料;按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,在模具温度55℃、0.5MPa压力条件下保温保压4min成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品85%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
实例3
按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取18份溶胶、7份甲基含氢硅油、0.3份铂催化剂、0.2份聚乙二醇、2份Span-80、12份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在10000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在800r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤5次,加入促进剂TMTD,在温度为170℃、压力为0.6MPa下硫化,在-20℃冷冻干燥8h,得微球材料;按重量份数计,分别称取聚醚多元醇80份、接枝聚醚50份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.3份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.5份、双二甲胺基丙基胺异丙醇0.7份、发泡剂4份、交联剂2份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为100℃下将搅拌釜抽真空,搅拌5h,冷却至室温得组合料;按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,在模具温度60℃、0.6MPa压力条件下保温保压5min成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品90%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
将本发明制备的汽车座椅海绵及市售车辆座椅海绵进行检测,具体检测结果如下表表1:
表1汽车座椅海绵性能表征
由表1可知本发明制备的汽车座椅海绵,回弹率好,柔韧性强,舒适度高,值得推广应用,具有广阔的市场价值前景。
Claims (7)
1.一种汽车座椅海绵的制备方法,其特征在于具体制备步骤为:
(1)按质量比1∶5将三元乙丙橡胶和200#溶剂油混合搅拌均匀,得溶胶,按重量份数计,分别称取10~18份溶胶、5~7份甲基含氢硅油、0.2~0.3份铂催化剂、0.1~0.2份聚乙二醇、1~2份Span-80、6~12份环己烷,将甲基含氢硅油、铂催化剂和聚乙二醇加入到溶胶中,搅拌均匀后,得混合溶胶,将Span-80溶于环己烷得油相,在8000~10000r/min的乳化速率下,将混合溶胶加入油相混合均匀,得乳液,在600~800r/min的搅拌速率下,将乳液滴加入液体硅橡胶中,搅拌均匀得复相乳液,于40℃下保温1h,离心分离产物,并用水和乙醇洗涤3~5次,加入促进剂TMTD并硫化,在-15~-20℃冷冻干燥5~8h,得微球材料;
(2)按重量份数计,分别称取聚醚多元醇50~80份、接枝聚醚20~50份、N,N,N’-三甲基-N’羟乙基二氨基乙醚0.2~0.3份、N-甲基-N-(二甲氨基丙基)氨基乙醇0.2~0.5份、双二甲胺基丙基胺异丙醇0.5~0.7份、发泡剂3~4份、交联剂1~2份,将聚醚多元醇、接枝聚醚、胺类催化剂、前期凝胶催化剂、后期凝胶催化剂、发泡剂、交联剂、稳定剂混合,在温度为80~100℃下将搅拌釜抽真空,搅拌3~5h,冷却至室温得组合料;
(3)按质量比5∶3将组合料与微球材料混合均匀,进行模具浇铸,保温保压处理,成型后进行脱模,得产品材料,将产品材料进行真空开泡处理,将产品80%~90%体积进行压缩,排出废气,然后进行抽真空处理,抽走废气,即得汽车座椅海绵。
2.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(1)所述的硫化处理为在温度为110~170℃、压力为0.4~0.6MPa下硫化。
3.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(2)所述的聚醚多元醇为环氧乙烷-环氧丙烷类共聚聚醚多元醇、三羟甲基丙烷与环氧丙烷、环氧乙烷的共聚多元醇中的一种。
4.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(2)所述的接枝聚醚为环氧丙烷类接枝聚醚。
5.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(2)所述的发泡剂为偶氮二甲肽胺、2,2-偶氮二异丁腈和碳酸氢钠中的一种。
6.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(2)所述的交联剂为二乙醇胺、三乙醇胺中的任意一种。
7.根据权利要求1所述的一种汽车座椅海绵的制备方法,其特征在于:步骤(3)所述的保温保压处理为在模具温度50~60℃、0.4~0.6MPa压力条件下保温保压3~5min。
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CN109880378A (zh) * | 2019-03-18 | 2019-06-14 | 西安科技大学 | 一种阻燃环保型座椅 |
CN113004700A (zh) * | 2021-02-03 | 2021-06-22 | 嘉兴未来新材料科技有限公司 | 一种有机硅慢回弹海绵及其制备方法 |
CN116023787A (zh) * | 2022-11-11 | 2023-04-28 | 武汉中科先进材料科技有限公司 | 一种具有双峰泡孔结构的有机硅泡沫及其制备方法 |
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CN109880378A (zh) * | 2019-03-18 | 2019-06-14 | 西安科技大学 | 一种阻燃环保型座椅 |
CN113004700A (zh) * | 2021-02-03 | 2021-06-22 | 嘉兴未来新材料科技有限公司 | 一种有机硅慢回弹海绵及其制备方法 |
CN116023787A (zh) * | 2022-11-11 | 2023-04-28 | 武汉中科先进材料科技有限公司 | 一种具有双峰泡孔结构的有机硅泡沫及其制备方法 |
CN116023787B (zh) * | 2022-11-11 | 2023-08-22 | 武汉中科先进材料科技有限公司 | 一种具有双峰泡孔结构的有机硅泡沫及其制备方法 |
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