CN107955119A - 环保型阻燃冷链保温箱用组合聚醚及其制备方法 - Google Patents
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Abstract
本发明涉及一种环保型阻燃冷链保温箱用组合聚醚及其制备方法,属于有机化工合成技术领域。所述的环保型阻燃冷链保温箱用组合聚醚,由下列质量分数的物质组成:A组分:聚酯多元醇A:20‑40%;聚醚多元醇B:15‑25%;聚醚多元醇C:10‑20%;泡沫稳定剂:1‑2%;化学发泡剂:1‑2.5%;催化剂:0.5‑2%;阻燃剂:10‑25%;物理发泡剂:5‑15%;B组分:聚合二苯基甲烷二异氰酸或多甲基多苯基异氰酸酯。制得的制品具有高阻燃、低导热系数、高强度、良好保温性能和表面无缺陷等优点。同时,本发明所述的制备方法不含氟,无VOC,符合环保要求,工艺简单,易于实施,科学合理。
Description
技术领域
本发明涉及一种环保型阻燃冷链保温箱用组合聚醚及其制备方法,属于有机化工合成技术领域。
背景技术
生鲜网购越来越越被消费者接受,生鲜冷链到户配送是冷链物流的最后一公里延伸,将包裹或者食品食材从商家配送到消费者手中,其各个环节必须处于低温环境,以保证食品质量安全,防止污染的特殊供应链***。目前国内生鲜电商采取的冷链配送主要有两种:一是用制冷设备运送,如冷藏车;二是用保温设备运送,如保温箱。其中,冷藏车用作冷链宅配工具,温控并不是最好的,弊端表现有:1.一旦路况复杂,低速行驶制冷能力不够;2.多次开门散失冷气;3.只有一个温区,离开车厢就脱冷等弊端。使用保温箱可以针对不同食材设置不同温度,配送到最后仍能达到理想效果。聚氨酯硬质泡沫塑料作为保温效果极好的隔热结构材料在冷链行业有着极其广阔的应用前景。
聚氨酯硬泡业现在正处于发泡剂替代的时期,已经有多种零ODP的发泡剂在推广使用,而FSI公司推出的甲酸甲酯由于其化学稳定性好,相对分子质量仅为HCFC-141b的一半,远低于HFC-245fa和HFC-365mfc,沸点32℃,ODP值为零,无VOC,且GWP值较低,生产工艺比较简单,价格低廉,可以提高发泡工艺的经济性。
发明内容
针对现有技术的不足,本发明的目的是提供一种环保型阻燃冷链保温箱用组合聚醚,具有高强度、高阻燃、良好保温性能和表面无缺陷的特性。
同时,本发明还提供了一种环保型阻燃冷链保温箱用组合聚醚的制备方法,不含氟,无VOC,符合环保要求,工艺简单,易于实施,科学合理。
本发明所述的环保型阻燃冷链保温箱用组合聚醚,由下列质量分数的物质组成:
A组分:
B组分:
聚合二苯基甲烷二异氰酸酯或多甲基多苯基异氰酸酯。
所述的聚酯多元醇A为2官能度,羟值为220-260mgKOH/g的聚酯多元醇;优选PS-2352,南京金陵斯泰潘化学有限公司。
聚酯多元醇PS-2352,结构本身具有大量芳香杂环及其它五元杂环,能够起到结构阻燃的作用,同时该聚酯多元醇在发泡过程中具有较好的整体熟化性能,缩短脱模时间,提高生产效率。
所述的聚醚多元醇B为5-6官能度,羟值为460-500mgKOH/g的聚醚多元醇;优选INOVL R6048,山东一诺威新材料有限公司。
聚醚多元醇INOVL R6048官能度、羟值较高,能够提供反应过程中的骨架,有效提高交联密度与交联速度,从反应角度缩短整个发泡过程的时间,减少反应时间,提高脱模性;较高的官能度能够提供更多骨架起到提高泡沫强度的作用;该聚醚使用山梨醇作为单一起始剂,具有较好的流动性,且自生的高官能度能够提供较高的反应动力,能大幅度提高组合聚醚的流动性。
所述的聚醚多元醇C为2官能度,羟值为100-120mgKOH/g的聚醚多元醇;优选INOVLC210,山东一诺威新材料有限公司。
聚醚多元醇INOVL C210分子链较长,在发泡过程中能够更好的浸润箱体基材,达到更好的粘结效果,能够改善聚氨酯泡沫与箱体基材的粘结力,在低温时不会出现脱壳现象。同时加入该组份能够有效降低组合聚醚多元醇的粘度,能够在发泡反应初期使泡沫更快的填满整个箱体增强整体流动性,在制备保温箱时具有更好的工艺操作性。
所述的泡沫稳定剂为SI-C类表面活性剂;优选L-16268,迈图高新材料有限公司。
L-16268,在A组份中与各种成分互溶性好,在A、B两组份反应时具有更好的乳化、成核作用,因此得到的聚氨酯泡沫泡孔结构均匀,泡沫细腻,导热系数低,保温效果好。
所述的化学发泡剂为水;优选去离子水。
所述的阻燃剂为TCPP(磷酸三(1-氯-2-丙基)酯)。
所述的催化剂为PT303、Dabco BX405、TMR-2和PC-46的混合物。其中,PT303,DabcoBX405和TMR-2都为空气化工(中国)投资有限公司产品。
所述的PC-46为75%的醋酸钾溶液。
所述的催化剂均为低气味催化剂,使整个发泡过程更环保,生产过程更加安全,制得的泡沫具有低散发性特点。使用PT303能够加快反应过程中的起发速度,使泡沫快速充满模腔提高流动性;TMR-2与PC-46搭配提高反应过程中过量异氰酸酯转化为六元环的转化率,从而提高聚氨酯泡沫中结构阻燃成分的含量,提高阻燃性。
所述的物理发泡剂为甲酸甲酯。
所述的甲酸甲酯在组合聚醚中具有优良的溶解度,有利于改善泡沫的阻燃性、尺寸稳定性和压缩强度,同时可以减少表面活性剂、阻燃剂等的用量,且甲酸甲酯不与异氰酸酯反应,可以避免发泡过程中脲键的产生,能够改善泡沫脆性。
本发明所述的环保型阻燃冷链保温箱用组合聚醚的制备方法,包括以下步骤:
1)A组分制备:将称量好的聚酯多元醇A、聚醚多元醇B、聚醚多元醇C、泡沫稳定剂、化学发泡剂、催化剂、阻燃剂和物理发泡剂,依次加入反应釜中,常温下,搅拌0.5-1小时,充分混合,得到组分A;
2)B组分制备:将聚合二苯基甲烷二异氰酸酯或多甲基多苯基异氰酸酯称量备用;
3)使用时,将A组分和B组分按质量比1:1.2-1.4通过高压发泡机混合均匀后,注入模具,生产保温箱。
与现有技术相比,本发明具有如下有益效果:
1.采用甲酸甲酯作为物理发泡剂,利用发泡剂本身的特性结合配方本身优势,制得的组合聚醚泡沫具有高阻燃、低导热系数、高强度、良好保温性能和表面无缺陷等优点;
2.所述的制备方法不含氟,无VOC,符合环保要求,工艺简单,易于实施,科学合理。
具体实施方式
下面结合实施例对本发明做进一步的说明。
实施例1
分别称量PS-2352:73kg,INOVL R6048:44kg,INOVL C210:30kg,Y-16268:2.7kg,去离子水:3.2kg,PT303:0.4kg,DabcoBX405:0.7kg,TMR-2:0.4kg,PC-46:0.6kg,TCPP30kg,甲酸甲酯:15kg;
(1)将称量好的PS-2352、INOVL R6048、INOVL C210、Y-16268、去离子水、PT303、DabcoBX405、TMR-2、PC-46、TCPP和甲酸甲酯依次加入反应釜中,在常温下搅拌0.5小时,充分混合,得到A组分;
(2)B组分:聚合二苯基甲烷二异氰酸酯,240kg;
(3)A组分与B组分按照质量比1:1.2通过高压机均匀混合注入保温箱模具中,制得本产品。
实施例2
分别称量PS-2352:80kg,INOVL R6048:32kg,INOVL C210:27kg,Y-16268:2.9kg,去离子水:3.4kg,PT303:0.5kg,DabcoBX405:0.8kg,TMR-2:0.5kg,PC-46:0.9kg;TCPP35kg,甲酸甲酯:17kg。
(1)将称量好的PS-2352、INOVL R6048、INOVL C210、Y-16268、去离子水、PT303、DabcoBX405、TMR-2、PC-46、TCPP和甲酸甲酯依次加入反应釜中,在常温下搅拌0.5小时,充分混合,得到A组分;
(2)B组分:聚合二苯基甲烷二异氰酸酯,280kg;
(3)A组分与B组分按照质量比1:1.4通过高压机均匀混合注入保温箱模具中,制得本产品。
实施例3
分别称量PS-2352:73kg,INOVL R6048:39kg,INOVL C210:20kg,Y-16268:2.6kg,去离子水:2.9kg,PT303:0.3kg,DabcoBX405:1.1kg,TMR-2:0.4kg,PC-46:0.7kg,TCPP40kg,甲酸甲酯20kg。
(1)将称量好的PS-2352、INOVL R6048、INOVL C210、Y-16268、去离子水、PT303、DabcoBX405、TMR-2、PC-46、TCPP和甲酸甲酯依次加入反应釜中,在常温下搅拌0.5小时,充分混合,得到A组分;
(2)B组分:聚合二苯基甲烷二异氰酸酯,260kg;
(3)A组分与B组分按照质量比1:1.3通过高压机均匀混合注入保温箱模具中,制得本产品。
对实施例1-3产品进行质量检测,所得检测结果如表1所示。
表1泡沫产品质量检测数据
从表1中可以看出,使用本发明制成的保温箱用聚氨酯泡沫导热系数低保温性能好,压缩强度高,尺寸稳定性好,阻燃性能优异,在经过高低温循环试验后无变形、脱壳和开裂现象。实施例2中,A、B组份质量比为1:1.4,其异氰酸指数在三组体系中最高,在聚氨酯泡沫内部的三聚环更多,因此在表1测试结果中,该条件下泡沫强度及阻燃性能均为各实施例中最好的。
Claims (10)
1.一种环保型阻燃冷链保温箱用组合聚醚,其特征在于:由下列质量分数的物质组成:
A组分:
B组分:
聚合二苯基甲烷二异氰酸酯或多甲基多苯基异氰酸酯。
2.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:聚酯多元醇A为2官能度,羟值为220-260mgKOH/g的聚酯多元醇。
3.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:聚醚多元醇B为5-6官能度,羟值为460-500mgKOH/g的聚醚多元醇。
4.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:聚醚多元醇C为2官能度,羟值为100-120mgKOH/g的聚醚多元醇。
5.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:泡沫稳定剂为SI-C类表面活性剂。
6.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:化学发泡剂为水。
7.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:阻燃剂为TCPP。
8.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:催化剂为PT303、Dabco BX405、TMR-2和PC-46的混合物。
9.根据权利要求1所述的环保型阻燃冷链保温箱用组合聚醚,其特征在于:物理发泡剂为甲酸甲酯。
10.一种权利要求1所述的环保型阻燃冷链保温箱用组合聚醚的制备方法,其特征在于:包括以下步骤:
1)A组分制备:将称量好的聚酯多元醇A、聚醚多元醇B、聚醚多元醇C、泡沫稳定剂、化学发泡剂、催化剂、阻燃剂和物理发泡剂,依次加入反应釜中,常温下,搅拌0.5-1小时,充分混合,得到组分A;
2)B组分制备:将聚合二苯基甲烷二异氰酸酯或多甲基多苯基异氰酸酯称量备用;
3)使用时,将A组分和B组分按质量比1:1.2-1.4通过高压发泡机混合均匀后,注入模具,生产保温箱。
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