CN103759097B - 低边缘热桥效应的真空绝热板 - Google Patents

低边缘热桥效应的真空绝热板 Download PDF

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CN103759097B
CN103759097B CN201410022956.1A CN201410022956A CN103759097B CN 103759097 B CN103759097 B CN 103759097B CN 201410022956 A CN201410022956 A CN 201410022956A CN 103759097 B CN103759097 B CN 103759097B
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film
aluminum
aluminizer
aluminium foil
aluminum foil
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CN103759097A (zh
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徐银海
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Zhejiang Huanshi Innovative Materials Co ltd
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JIAXING USEFOIL PACKAGING Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/06Arrangements using an air layer or vacuum
    • F16L59/065Arrangements using an air layer or vacuum using vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/02Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L59/00Thermal insulation in general
    • F16L59/02Shape or form of insulating materials, with or without coverings integral with the insulating materials
    • F16L59/029Shape or form of insulating materials, with or without coverings integral with the insulating materials layered

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Laminated Bodies (AREA)
  • Building Environments (AREA)

Abstract

本发明公开了一种低边缘热桥效应的真空绝热板,目的在于降低因结构引起的热桥效应,使真空绝热板热导系数更低,更加节能。它是由铝塑复合膜制成的铝箔袋,在铝箔袋中放置有隔热芯材,铝箔袋经封装形成在四周有封口的真空绝热板,其特征是在封口处铝塑复合膜中的铝箔或镀铝膜重合宽度小于封口的宽度,即四周封口处铝塑复合膜中的铝箔或镀铝膜缩进在内。本发明由于减小了相互重合的热传导面积,使得保温性能下降的热桥效应减弱,同时铝箔或镀铝膜的边缘被铝箔或镀铝膜内外两面导热性能相对较差的塑料膜封住而不暴露在外,也阻止了铝箔或镀铝膜与外界的直接热交换,使真空绝热板的隔热和保温的性能大大提高,节能效果更好。

Description

低边缘热桥效应的真空绝热板
技术领域
本发明属于保温绝热材料,尤其涉及到低边缘热桥效应的真空绝热板。
背景技术
真空绝热板(VIP板)是英文Vacuum Insulation Panel的简称,是真空保温材料中的一种,它是由填充芯材与真空保护表层复合而成,它有效地避免空气对流引起的热传递,因此导热系数可大幅度降低,小于0.003w/m.k,并且不含有任何ODS材料,具有环保和高效节能的特性,是目前世界上较为优良的高效保温材料。真空绝热板通常由铝塑复合膜制成的铝箔袋和隔热芯材组成,其中隔热芯材放置在铝箔袋中,在高真空封装机中封装形成真空绝热板如图1所示,而铝箔袋是在铝箔或镀铝膜的两面复合有塑料薄膜,铝箔和镀铝膜是一种热传导性很好的材料,由于起封闭作用的袋体四周是由两层铝塑复合膜直接粘结(中间无隔热芯材隔开),通过热传导可以将真空绝热板前后两表面铝塑复合膜上的热量相互传递,降低真空绝热板的隔热效果。为了降低这种边缘热桥效应,有许多真空绝热板采用不含铝箔的包裹材料如专利公布号:CN102720923A一种真空绝热板及其制备方法,但对于有反射热辐射或有屏蔽要求的绝热板来讲,无铝箔的真空绝热板其保温、隔热性能将大大降低,对于有屏蔽要求的就无法满足。因此,设计一种既用铝塑复合膜但又导热系数较低的真空绝热板,对于节约能源、提高设备或装置的保温、隔热性能具有十分重要的意义,这也是目前众多科技人员试图解决而一直未曾解决的问题。
发明内容
本发明的目的在于降低因结构引起的热桥效应,提高绝热效果,使VIP真空绝热板热导系数更低,更加节能。
为了达到上述效果,本发明的技术方案是:它是由铝塑复合膜制成的铝箔袋或镀铝膜袋,在铝箔袋或镀铝膜袋中放置有隔热芯材,铝箔袋或镀铝膜袋经封装形成四周有封口的真空绝热板,其特征是在封口处铝塑复合膜中的铝箔或镀铝膜重合宽度小于封口的宽度,即四周封口处铝塑复合膜中的铝箔或镀铝膜缩进在内。
所述封口处铝塑复合膜中的铝箔或镀铝膜重合宽度为1-8毫米。
所述铝塑复合膜的结构由外而内依次是由:PET膜、NY膜、铝箔或镀铝膜、PE膜层叠复合而成。
所述铝塑复合膜的结构由外而内依次是由:NY膜、PET膜、铝箔或镀铝膜、PE膜层叠复合而成。
所述铝塑复合膜的结构由外而内依次是由:NY膜、铝箔或镀铝膜、PET膜、PE膜层叠复合而成。
所述铝塑复合膜的结构由外而内依次是由:PET膜、铝箔或镀铝膜、NY膜、PE膜层叠复合而成。
根据上述结构设计的低边缘热桥效应的真空绝热板,由于导热系数高的铝箔或镀铝膜在四周封口宽度的减小,即减小了相互重合的热传导面积,使得保温性能下降的热桥效应减弱,同时由于封口外缘铝箔或镀铝膜的内缩,铝箔或镀铝膜的边缘被铝箔或镀铝膜内外两面导热性能相对较差的塑料膜封住而不暴露在外,也阻止了铝箔或镀铝膜与外界的直接热交换,使真空绝热板的隔热和保温的性能大大提高,节能效果更好。
附图说明
图1是现有真空绝热板的剖视图;
图2是低边缘热桥效应的真空绝热板剖视图。
图中:1、铝塑复合膜;2、铝箔袋;3、隔热芯材;4、封口;5、铝箔或镀铝膜;6、PET膜;7、NY膜;8、PE膜。
具体实施方式
下面结合附图和具体实施例对本发明作进一步的描述。
图2是低边缘热桥效应的真空绝热板的剖视图。从图中看出,它是由铝塑复合膜1制成的铝箔袋2,在铝箔袋2中放置有隔热芯材3,铝箔袋2经封装形成在四周有封口4的真空绝热板,在封口4处铝塑复合膜1中的铝箔5重合宽度A小于封口的宽度B,即四周封口4处铝塑复合膜1中的铝箔或镀铝膜5缩进在内。所述封口4处铝塑复合膜1中的铝箔或镀铝膜5重合宽度为1-8毫米。所述铝塑复合膜1的结构由外而内依次是由:PET膜6、NY膜7、铝箔或镀铝膜5和PE膜8层叠复合而成。铝塑复合膜1的结构也还可以由外而内依次是NY膜7、PET膜6、铝箔或镀铝膜5和PE膜8层叠复合而成,或NY膜7、铝箔或镀铝膜5、PET膜6和PE膜8层叠复合而成,或PET膜6、铝箔或镀铝膜5、NY膜7和PE膜8层叠复合而成。所述的铝箔是指用高纯度的铝压延后形成的薄片,镀铝膜是指用铝的蒸气沉淀堆积在基膜上形成的薄片。上述PET为聚对苯二甲酸乙二醇酯、NY为尼龙、PE为聚乙烯。

Claims (6)

1.低边缘热桥效应的真空绝热板,它是由铝塑复合膜制成的铝箔袋或镀铝膜袋,在铝箔袋或镀铝膜袋中放置有隔热芯材,铝箔袋或镀铝膜袋经封装形成四周有封口的真空绝热板,其特征是在封口处铝塑复合膜中的铝箔或镀铝膜重合宽度小于封口的宽度,即四周封口处铝塑复合膜中的铝箔或镀铝膜缩进在内。
2.根据权利要求1所述的低边缘热桥效应的真空绝热板,其特征在于所述封口处铝塑复合膜中的铝箔或镀铝膜重合宽度为1-8毫米。
3.根据权利要求1或2所述的低边缘热桥效应的真空绝热板,其特征在于所述铝塑复合膜的结构由外而内依次是由:PET膜、NY膜、铝箔或镀铝膜、PE膜层叠复合而成。
4.根据权利要求1或2所述的低边缘热桥效应的真空绝热板,其特征在于所述铝塑复合膜的结构由外而内依次是由:NY膜、PET膜、铝箔或镀铝膜、PE膜层叠复合而成。
5.根据权利要求1或2所述的低边缘热桥效应的真空绝热板,其特征在于所述铝塑复合膜的结构由外而内依次是由:NY膜、铝箔或镀铝膜、PET膜、PE膜层叠复合而成。
6.根据权利要求1或2所述的低边缘热桥效应的真空绝热板,其特征在于所述铝塑复合膜的结构由外而内依次是由:PET膜、铝箔或镀铝膜、NY膜、PE膜层叠复合而成。
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CN104295861B (zh) * 2014-10-16 2016-08-17 南京航空航天大学 一种低热桥的真空绝热板
CN104595634A (zh) * 2015-01-26 2015-05-06 黄国平 一种真空绝热板
CN105987256A (zh) * 2015-02-11 2016-10-05 福建赛特新材股份有限公司 一种低边缘热桥效应长寿命的真空绝热板及其制造方法
GB2537602B (en) * 2015-04-14 2020-03-11 Kingspan Holdings Irl Ltd Vacuum insulation panel and process of manufacture
CN106121071A (zh) * 2016-08-26 2016-11-16 安徽百特新材料科技有限公司 一种真空隔热保温板及其加工方法
CN109239128A (zh) * 2018-11-09 2019-01-18 上海海事大学 真空绝热板边缘热桥效应评估及实验方法

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