CN110564315A - 一种收缩率低的eva胶膜 - Google Patents

一种收缩率低的eva胶膜 Download PDF

Info

Publication number
CN110564315A
CN110564315A CN201910869130.1A CN201910869130A CN110564315A CN 110564315 A CN110564315 A CN 110564315A CN 201910869130 A CN201910869130 A CN 201910869130A CN 110564315 A CN110564315 A CN 110564315A
Authority
CN
China
Prior art keywords
adhesive film
eva adhesive
eva
stripes
low shrinkage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910869130.1A
Other languages
English (en)
Inventor
吕松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU SIWEIKE PHOTOVOLTAIC NEW MATERIAL Co Ltd
Original Assignee
CHANGZHOU SIWEIKE PHOTOVOLTAIC NEW MATERIAL Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHANGZHOU SIWEIKE PHOTOVOLTAIC NEW MATERIAL Co Ltd filed Critical CHANGZHOU SIWEIKE PHOTOVOLTAIC NEW MATERIAL Co Ltd
Priority to CN201910869130.1A priority Critical patent/CN110564315A/zh
Publication of CN110564315A publication Critical patent/CN110564315A/zh
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/04—Homopolymers or copolymers of ethene
    • C09J123/08—Copolymers of ethene
    • C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C09J123/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

本发明涉及光伏胶膜技术领域，尤其是一种收缩率低的EVA胶膜，包括上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层，所述上层EVA胶膜层的内表面设有若干第一防滑条纹，所述聚烯烃弹性体的上表面和下表面分别设有倾斜方向相反的上防滑条纹和下防滑条纹，层叠后，若干第一防滑条纹和若干上防滑条纹相间设置，若干第二防滑条纹和若干下防滑条纹相间设置；聚烯烃弹性体具有较高的强度和伸长率，具有较低的水蒸气透过率，内聚力更大，所以本发明中通过在两层EVA胶膜层之间设置一层聚烯烃弹性体层，可以有效解决EVA胶膜收缩率低、水蒸气透过率和吸水率较大，耐候性较差的不足，两者配合层压，提高了本发明中的EVA胶膜的整体性能，降低了EVA胶膜的收缩率。

Description

一种收缩率低的EVA胶膜
技术领域
本发明涉及光伏胶膜技术领域，尤其是一种收缩率低的EVA胶膜。
背景技术
EVA胶膜加热后收缩率比较大，尤其是在长度方向上和宽度方向上收缩率的差异则更大，这给组件生产带来了很大问题。首先是电池串横向、电池竖向位移和汇流条位移。电池位移使串间距不等，严重时并串甚至重叠。电池位移则导致电池间互连条凸起，在组件背面形成鼓包，严重时引起电池碎片和鼓包刺破背板。
EVA胶膜加热后收缩率大带来的另一个问题是需要加大EVA胶膜的尺寸来防止EVA缩到组件内部，造成组件边缘无EVA胶的情况。以前EVA胶膜和背板尺寸都要大于玻璃四周几厘米，多出来的EVA胶膜不仅浪费材料，还污染了层压机、传送带以及组件自身。层压机和传送带被污染会使后速组件沾污和产生压痕，严重时组件粘在层压机上盖或高温布上掉下来被摔碎。组件割边割下来的肥料每天都有好几大包，不仅浪费价格不菲的EVA胶膜和TPT背板，还污染环境。
发明内容
本发明的目的是：克服现有技术中不足，提供一种收缩率低、使用方便的收缩率低的EVA胶膜。
为解决上述技术问题，本发明采用的技术方案如下：
一种收缩率低的EVA胶膜，包括上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层，所述上层EVA胶膜层的内表面设有若干第一防滑条纹，所述聚烯烃弹性体的上表面和下表面分别设有倾斜方向相反的上防滑条纹和下防滑条纹，层叠后，若干第一防滑条纹和若干上防滑条纹相间设置，若干第二防滑条纹和若干下防滑条纹相间设置。
进一步的，所述第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的倾斜角度为30-45°。
进一步的，所述第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的横截面呈三角形。
进一步的，所述上层EVA胶膜层和下层EVA胶膜层的边缘呈倾斜状。
进一步的，所述上层EVA胶膜层中填充有若干光扩散粒子，所述光扩散粒子呈鱼鳞片状。
进一步的，所述光扩散粒子的粒径大小为2-8μm。
进一步的，所述聚烯烃弹性体为聚丙烯弹性体，所述聚丙烯弹性体内填充有若干纳米级的聚乳酸或苯乙烯共聚物。
采用本发明的技术方案的有益效果是：
聚烯烃弹性体具有较高的强度和伸长率，同时还具有良好的耐候性、耐紫外老化性能，优异的耐热、耐低温性能，具有较低的水蒸气透过率，内聚力更大，所以本发明中通过在两层EVA胶膜层之间设置一层聚烯烃弹性体层，可以有效解决EVA胶膜收缩率低、水蒸气透过率和吸水率较大，耐候性较差的不足，两者配合层压，提高了本发明中的EVA胶膜的整体性能，降低了EVA胶膜的收缩率。
具体实施方式
为使本发明的上述目的、特征和优点能够更加明显易懂，下面结合具体实施方式对本发明作进一步详细的说明。
一种收缩率低的EVA胶膜，包括上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层，所述上层EVA胶膜层的内表面设有若干第一防滑条纹，所述聚烯烃弹性体的上表面和下表面分别设有倾斜方向相反的上防滑条纹和下防滑条纹，层叠后，若干第一防滑条纹和若干上防滑条纹相间设置，若干第二防滑条纹和若干下防滑条纹相间设置，EVA胶膜强度低，水蒸气透过率和吸收率较大，耐候性较差，正常使用过程中会有水汽透过，导致胶膜雾化，影响透光率，降低组件的发电量，而且EVA胶膜加热后收缩率比较大，尤其是在长度方向上和宽度方向上收缩率的差异则更大，所以本发明中将EVA胶膜设计成汉堡结构，在两层EVA胶膜层中设计一层聚烯烃弹性体层，这样可以互补，弥补EVA胶膜的不足，提高了EVA胶膜的整体性能。
本实施例中第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的倾斜角度为30-45°，采用此结构，上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层之间的防滑效果更好，不同层面上的防滑条纹之间的交错设置更稳定，层与层之间的连接更紧凑， EVA胶膜的整体强度更高，受热收缩率低。
本实施例中第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的横截面呈三角形，采用此结构，防滑效果好，而且结构简单，生产工艺简单。
本实施例中上层EVA胶膜层和下层EVA胶膜层的边缘呈倾斜状，采用此结构，上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层之间热熔合后，边缘部由于是倾斜的结构，长期使用后，不会发生翘起或卷边的问题。
本实施例中上层EVA胶膜层中填充有若干光扩散粒子，所述光扩散粒子呈鱼鳞片状，光扩散粒子的设置，可以增加胶膜的反射率，提高光电转换率。本实施中光扩散粒子的粒径大小为4-12μm，优选为10μm。
本实施例中聚烯烃弹性体为聚丙烯弹性体，聚丙烯弹性体内填充有若干纳米级的聚乳酸或苯乙烯共聚物。
以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内，进行多样的变更以及修改。凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。

Claims (7)

1.一种收缩率低的EVA胶膜，其特征在于：包括上层EVA胶膜层、聚烯烃弹性体层和下层EVA胶膜层，所述上层EVA胶膜层的内表面设有若干第一防滑条纹，所述聚烯烃弹性体的上表面和下表面分别设有倾斜方向相反的上防滑条纹和下防滑条纹，层叠后，若干第一防滑条纹和若干上防滑条纹相间设置，若干第二防滑条纹和若干下防滑条纹相间设置。
2.根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的倾斜角度为30-45°。
3.根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹的横截面呈等边三角形。
4.根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述第一防滑条纹、上防滑条纹、下防滑条纹和第二防滑条纹
根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述上层EVA胶膜层和下层EVA胶膜层的边缘呈倾斜状。
5.根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述上层EVA胶膜层中填充有若干光扩散粒子，所述光扩散粒子呈鱼鳞片状。
6.根据权利要求5所述的一种收缩率低的EVA胶膜，其特征在于：所述光扩散粒子的粒径大小为2-8μm。
7.根据权利要求1所述的一种收缩率低的EVA胶膜，其特征在于：所述聚烯烃弹性体为聚丙烯弹性体，所述聚丙烯弹性体内填充有若干纳米级的聚乳酸或苯乙烯共聚物。
CN201910869130.1A 2019-09-16 2019-09-16 一种收缩率低的eva胶膜 Pending CN110564315A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910869130.1A CN110564315A (zh) 2019-09-16 2019-09-16 一种收缩率低的eva胶膜

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910869130.1A CN110564315A (zh) 2019-09-16 2019-09-16 一种收缩率低的eva胶膜

Publications (1)

Publication Number Publication Date
CN110564315A true CN110564315A (zh) 2019-12-13

Family

ID=68779983

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910869130.1A Pending CN110564315A (zh) 2019-09-16 2019-09-16 一种收缩率低的eva胶膜

Country Status (1)

Country Link
CN (1) CN110564315A (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206069756U (zh) * 2016-05-16 2017-04-05 常州斯威克光伏新材料有限公司 双玻组件用透明eva封装胶膜
CN108987513A (zh) * 2018-07-23 2018-12-11 常州百佳年代薄膜科技股份有限公司 紫外线截止型三层共挤复合膜及其应用

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206069756U (zh) * 2016-05-16 2017-04-05 常州斯威克光伏新材料有限公司 双玻组件用透明eva封装胶膜
CN108987513A (zh) * 2018-07-23 2018-12-11 常州百佳年代薄膜科技股份有限公司 紫外线截止型三层共挤复合膜及其应用

Similar Documents

Publication Publication Date Title
US20110036390A1 (en) Composite encapsulants containing fillers for photovoltaic modules
CN102386251B (zh) 一种用软基片制备的柔性太阳能电池光伏组件
US20120042948A1 (en) Thin-film solar cell and manufacture method thereof
JP2011155175A5 (zh)
CN110379867A (zh) 硅基异质结太阳电池叠瓦光伏组件及其制备方法
CN102254975A (zh) 一种柔性薄膜太阳能电池及其封装方法
CN111293183B (zh) 一种光伏组件及其制备方法
CN213958974U (zh) 一种光伏组件及包含其的发电系统
CN203055958U (zh) 具有双玻结构的晶体硅太阳能电池组件
WO2011122652A1 (ja) 太陽電池セル及び太陽電池モジュール
CN110564315A (zh) 一种收缩率低的eva胶膜
CN201868451U (zh) 一种双玻太阳能电池组件专用胶条
CN104134717A (zh) 太阳能电池组件的制造方法
CN206806341U (zh) 一种反光光伏组件
EP3157066A1 (en) Solar cell module
CN109817743A (zh) 一种下板式晶体硅光伏组件
CN202487586U (zh) 一种彩色太阳能电池组件
CN211743168U (zh) 一种柔性串并联叠瓦光伏组件
CN203983304U (zh) 一种高效太阳能电池双玻组件
CN208422940U (zh) 光伏组件的复合封装胶膜及光伏组件
CN202282367U (zh) 一种太阳能电池组件封装胶膜
CN103904149B (zh) 一种晶硅太阳能电池的封装结构和方法
CN204632780U (zh) 一种可裁切柔性薄膜太阳能电池组件
CN203085588U (zh) 太阳能板用的透明密封层
CN202332901U (zh) 软基柔性太阳能电池光伏组件

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20191213