CN111303364A - 一种高保温聚氨酯发泡配方及基于其的冰柜 - Google Patents

一种高保温聚氨酯发泡配方及基于其的冰柜 Download PDF

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CN111303364A
CN111303364A CN202010295557.8A CN202010295557A CN111303364A CN 111303364 A CN111303364 A CN 111303364A CN 202010295557 A CN202010295557 A CN 202010295557A CN 111303364 A CN111303364 A CN 111303364A
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江峰
刘鹏
程琳
吴园
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Changhong Meiling Co Ltd
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Abstract

本发明公开了一种高保温聚氨酯发泡配方，涉及冰柜技术领域。本发明的高保温聚氨酯发泡配方重量份包括：白100份；HFO‑1233ZD15‑20份；环戊烷5‑10份；黑料140‑155份；其中，白料按重量百分比包括：蔗糖35‑40％；二亚乙基三胺30‑35％；甘油10‑15％；季戊四醇10‑15％；水1‑2％；催化剂2‑4％；稳定剂2‑4％。本发明通过对聚氨酯发泡配方的调整，实现聚氨酯发泡保温层的高保温性能，实现超薄冰柜的制作要求；解决了现有超薄冰柜生产工序繁琐，以及生产成本高的问题。

Description

一种高保温聚氨酯发泡配方及基于其的冰柜
技术领域
本发明属于冰柜技术领域，特别是涉及一种高保温聚氨酯发泡配方及基于其的冰柜。
背景技术
冰柜是生活中不可或缺的电器，随着技术的不断发展，产品的不断竞争，超薄冰柜逐渐成为发展方向。同等容积下，超薄冰柜的占地面积更小；同等占地面积，超薄冰柜的容积更大。并且超薄冰柜的运输成本以及仓储成本均可降低。因此，无论是对消费者还是对制造商而言，超薄冰柜均是更好的选择。
要制作超薄冰柜，一般是采用真空绝热板(以下简称VIP板)技术，利用VIP板超高的保温效果，从而达到降低冰柜保温层(即聚氨酯保温层)厚度的目的，完成超薄冰柜的制作。
但是该技术方案所用到的VIP板本身价格很高，并且增加制作工序，同时VIP板在现场使用过程中的废品率较高，从而导致超薄冰柜整体生产成本较高。因此，如何采用低成本的技术方案达到制作超薄冰柜的要求，成为行业内共同的难点。
发明内容
本发明的目的在于提供一种高保温聚氨酯发泡配方及基于其的冰柜，通过对聚氨酯发泡配方的调整，实现聚氨酯发泡保温层的高保温性能，实现超薄冰柜的制作要求；解决了现有超薄冰柜生产工序繁琐，以及生产成本高的问题。
为解决上述技术问题，本发明是通过以下技术方案实现的：
本发明为一种高保温聚氨酯发泡配方，按重量份包括：
白料 100份；
HFO-1233ZD 15-20份；
环戊烷 5-10份；
黑料 140-155份；
所述黑料为多亚甲基多苯基异氰酸酯，且粘度为850-900(25℃)/mPa·s，异氰酸根含量为36-38％
其中，所述白料按重量百分比包括：
Figure BDA0002452056740000021
一种冰柜，所述冰柜包括聚氨酯保温层；所述聚氨酯保温层通过上述的高保温聚氨酯发泡配方制备获得。
本发明具有以下有益效果：
本发明通过对聚氨酯发泡配方的进行重新配置调整，有效的提升了聚氨酯发泡层的保温效果，实现了聚氨酯发泡保温层的高保温性能，从而可有效降低冰柜箱体和门体的壁厚，实现超薄冰柜的制作要求，相比采用真空绝热板的制造方式，有效的简化了生产工序，降低了生产成本。
当然，实施本发明的任一产品并不一定需要同时达到以上所述的所有优点。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本发明为一种高保温聚氨酯发泡配方，按重量份包括：
白料 100份；
HFO-1233ZD 15-20份，其中，HFO-1233ZD以下简称为LBA；
环戊烷 5-10份；
黑料 140-155份；
黑料为多亚甲基多苯基异氰酸酯，且粘度为850-900(25℃)/mPa·s，异氰酸根含量为36-38％。
其中，白料按重量百分比包括：
Figure BDA0002452056740000031
一种冰柜，冰柜包括聚氨酯保温层；聚氨酯保温层通过上述的高保温聚氨酯发泡配方制备获得，具体制备方法如下：
制备步骤包括：
步骤一：在物料温度18℃条件下，将白料、环戊烷、LBA按配方比在白料预混罐中混合，得到混合白料；
步骤二：在物料温度18℃条件下，将粘度为850-900(25℃)/mPa·s，高官能度的异氰酸酯，放入黑料预混罐中搅拌均匀，得到黑料；其中，异氰酸根含量为36-38％；
步骤三：将混合白料、黑料同时高速高压射入注料枪头内腔，充分混合后的发泡原料通过枪头喷嘴注入待发泡的冰柜箱体以及门体模具中；
步骤四：发泡原料在模具中经过固化后，脱模，即在冰柜箱体以及门体中形成硬质聚氨酯保温层。
实施例一：
高保温聚氨酯发泡配方，各原料按质量份数为：
其中，白料为多种不同分量比例的聚醚多元醇、水、催化剂、稳定剂的混合物质，各原料按质量百分比为：
Figure BDA0002452056740000042
Figure BDA0002452056740000051
将上述配方按如下步骤制备得到用于冰柜的高保温聚氨酯保温层：
步骤一：在物料温度18℃条件下，将白料、环戊烷、LBA按配方比在白料预混罐中混合，得到混合白料；
步骤二：在物料温度18℃条件下，将粘度为850-900(25℃)/mPa·s，高官能度的异氰酸酯，放入黑料预混罐中搅拌均匀，得到黑料；其中，异氰酸根含量为36-38％；
步骤三：将混合白料、黑料同时高速高压射入注料枪头内腔，充分混合后的发泡原料通过枪头喷嘴注入待发泡的冰柜箱体以及门体模具中；
步骤四：发泡原料在模具中经过固化后，脱模，即在冰柜箱体以及门体中形成硬质聚氨酯保温层。
对比例：
常用聚氨酯发泡配方，各原料按质量份数的构成为：
白料 100份；
LBA 2份；
环戊烷 13份；
黑料 138份；
黑料为普通官能度的多亚甲基多苯基异氰酸酯，其粘度为300-400(25℃)/mPa·S，异氰酸根含量30-32％，由万华化学集团股份有限公司提供，牌号为PM-200。
其中，白料各原料按质量百分比为：
Figure BDA0002452056740000061
将上述配方按实施例一的制备步骤制备得到常用的冰柜聚氨酯保温层，并将实施例一和对比例制备得到的冰柜聚氨酯保温层进行对比测试，技术参数见表1.性能对比：
表1.性能对比
参数 实施例 对比例
黑白料料比 1.2:1 1.2:1
LBA份数 18 2
环戊烷份数 6 13
物料温度℃ 18 18
模具温度℃ 45 45
填充系数α 1.7 1.7
导热系数mw/mk 16.7 19.8
通过表1可以看出，实施例一中制备的聚氨酯保温层的导热系数比对比例要低的多，仅为16.7mw/mk，从而相对常用的聚氨酯保温层具有更好的保温性能。从而利用其高保温性能，可有效降低冰柜箱体和门体的壁厚，实现超薄冰柜的制作要求，相比采用真空绝热板的制造方式，可有效的简化了生产工序，以及降低了生产成本。
在本说明书的描述中，参考术语“一个实施例”、“示例”、“具体示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上公开的本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节，也不限制该发明仅为所述的具体实施方式。显然，根据本说明书的内容，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本发明的原理和实际应用，从而使所属技术领域技术人员能很好地理解和利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。

Claims (3)

1.一种高保温聚氨酯发泡配方，其特征在于，按重量份包括：
Figure FDA0002452056730000011
其中，所述白料按重量百分比包括：
Figure FDA0002452056730000012
2.根据权利要求1所述的一种高保温聚氨酯发泡配方，其特征在于，所述黑料为多亚甲基多苯基异氰酸酯，且粘度为850-900(25℃)/mPa·s，异氰酸根含量为36-38％。
3.一种冰柜，所述冰柜包括聚氨酯保温层；其特征在于，所述聚氨酯保温层通过权利要求1或2所述的高保温聚氨酯发泡配方制备获得。
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