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    • 4. 发明授权
    • Rigid foam and process for producing the same
    • 刚性泡沫及其制造方法
    • US5034424A
    • 1991-07-23
    • US547830
    • 1990-06-28
    • Udo WenningJan Brodsky
    • Udo WenningJan Brodsky
    • C08J9/12C08G18/00C08G101/00C08J9/14
    • C08J9/148C08J2375/04
    • A rigid foam, especially a largely closed-cell polyurethane or polyisocyanurate rigid foam, includes a cell structure being formed by the expansion of rigid foam raw materials with carbon dioxide as an inflating agent. The cell structure is substantially homogeneous and has a cell content of substantially CO.sub.2 inflating agent and proportions of a physical inflating agent being at least substantially insoluble in at least one of the rigid foam raw materials. A process for producing a rigid foam having a cell structure formed by the expansion of rigid foam raw materials with carbon dioxide includes forming a fine-celled rigid foam material by preparing an inflating agent being at least substantially insoluble in at least one of the rigid foam raw materials. The inflating agent is homogeneously emulsified in at least one of the rigid foam raw materials prior to the beginning of a chemical reaction, in the form of the disperse phase of an emulsion having a liquid droplet size being at most equal to 10 .mu.m in diameter and a proportion by weight of less than 3.5% of the rigid foam material. The rigid foam raw materials include components for producing an essential required amount of inflating agent in the form of carbon dioxide. The rigid foam raw materials in particular are polyols and isocyanates. Activators and/or stabilizers are optionally additionally used to form the cell structure. The cell structure preferably has a cell size of less than 100 .mu.m in diameter.
    • 硬质泡沫,特别是大部分密闭的聚氨酯或聚异氰脲酸酯硬质泡沫,包括通过膨胀硬质泡沫原料与二氧化碳作为充气剂形成的泡孔结构。 细胞结构基本上是均质的,并且具有基本上CO 2充气剂的细胞含量,并且至少基本上不溶于至少一种硬质泡沫原料的物理充气剂的比例。 一种用于生产具有通过用二氧化碳膨胀硬质泡沫原料形成的泡孔结构的刚性泡沫的方法包括通过制备至少基本上不溶于至少一种刚性泡沫塑料的膨胀剂来形成细小泡沫刚性泡沫材料 原料。 膨胀剂在化学反应开始之前的至少一种刚性泡沫原料中以具有至多等于10μm直径的液滴尺寸的乳液的分散相的形式均匀地乳化 并且重量比小于刚性泡沫材料的3.5%。 刚性泡沫原料包括用于生产二氧化碳形式的必需量的充气剂的组分。 硬质泡沫原料尤其是多元醇和异氰酸酯。 任选地另外使用活化剂和/或稳定剂以形成细胞结构。 电池结构优选具有小于100μm的电池尺寸。
    • 6. 发明授权
    • Thermally insulating wall
    • 隔热墙
    • US07645003B2
    • 2010-01-12
    • US09969190
    • 2001-10-01
    • Udo WenningHans-Frieder EberhardtMichael NeumannThomas Zeiler
    • Udo WenningHans-Frieder EberhardtMichael NeumannThomas Zeiler
    • A47B96/04
    • B32B27/06B29C47/0021B29C47/06B32B27/304B32B27/306B32B27/32B32B27/34B32B2307/304B32B2307/7242B32B2607/00E04B1/803F25D23/06F25D2201/14Y02A30/242Y02A30/243Y02B40/34Y02B80/12Y02B80/14
    • A refrigeration appliance includes a thermally insulating housing and a thermally insulating door. At least one of the housing and the door define an evacuated interspace and have an evacuated thermal insulation filling the interspace, a shaped, thermoplastic, substantially gas and water vapor impermeable outer cladding, and a shaped, thermoplastic, substantially gas and water vapor impermeable inner cladding. The inner cladding and the outer cladding substantially surround the interspace in a vacuum-tight manner. The cladding can be formed from polyolefins, polyvinylidene chloride, perfluoroalkoxy polymers. For reducing gas permeability, the cladding can be formed from ethylene/vinyl alcohol copolymer, polyacrylonitrile, and polyamide. The claddings can have co-extruded and/or laminated layers. The cladding can include a sputtered metal layer and/or a plastic/metal composite foil. The cladding can be formed from a thermoformed or blow-molded plastic. The insulation can have pressed silica or aerogel plates with a density of between 100 and 150 kg/m3.
    • 制冷装置包括绝热壳体和绝热门。 壳体和门中的至少一个限定了抽空的间隙,并且具有填充空隙的真空绝热,成形的,热塑性的,基本上气体和水蒸气不可渗透的外包层,以及成形的,热塑性的,基本上气体和水蒸气不可渗透的内部 包层 内包层和外包层基本上以真空密封的方式围绕空隙。 包层可以由聚烯烃,聚偏二氯乙烯,全氟烷氧基聚合物形成。 为了降低透气性,包层可以由乙烯/乙烯醇共聚物,聚丙烯腈和聚酰胺形成。 包层可以具有共挤出和/或层压层。 包层可以包括溅射的金属层和/或塑料/金属复合箔。 包层可以由热成型或吹塑成型的塑料形成。 绝缘体可以压制密度在100至150kg / m 3之间的二氧化硅或气凝胶板。