CN116218392A - 一种阻水泡棉胶带及其制备方法与应用 - Google Patents
一种阻水泡棉胶带及其制备方法与应用 Download PDFInfo
- Publication number
- CN116218392A CN116218392A CN202211649142.1A CN202211649142A CN116218392A CN 116218392 A CN116218392 A CN 116218392A CN 202211649142 A CN202211649142 A CN 202211649142A CN 116218392 A CN116218392 A CN 116218392A
- Authority
- CN
- China
- Prior art keywords
- water
- foam
- blocking
- pressure
- sensitive adhesive
- 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
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Classifications
-
- 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
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- 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
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- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
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- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- 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
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- 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
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- 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
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
-
- 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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/385—Acrylic polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/14—Gas barrier composition
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- 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
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
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- 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
-
- 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
-
- 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
- C09J2467/00—Presence of polyester
- C09J2467/005—Presence of polyester in the release coating
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- 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
- C09J2483/00—Presence of polysiloxane
- C09J2483/006—Presence of polysiloxane in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
本发明公开了一种阻水泡棉胶带及其制备方法与应用,所述阻水泡棉胶带由上至下包括双面离型层、第一阻水压敏胶层、泡棉层、第二阻水压敏胶层,所述第一阻水压敏胶层与第二阻水压敏胶层由阻水胶黏剂制备得到,所述阻水胶黏剂包括按质量分数计的以下组分:100份溶剂型压敏胶、0.2~10份固化剂、1~15份抗氧化剂、1~5份紫外吸收剂、10~30份增粘树脂、3~5份阻水聚合物以及25~60份有机溶剂。本发明通过在胶黏剂中引入阻水聚合物等以提高胶层的阻水性能,并与阻水泡棉基材层复合得到阻水泡棉胶带,可实现更好的阻水性能,而具有泡棉基材的胶带柔软性好,便于贴合,且阻水压敏胶层的粘结性高、耐候性好,长期户外使用不易脆化、脱落或是变黄,适用于太阳能组件边框的密封。
Description
技术领域
本发明涉及胶黏剂制备以及太阳能组件密封技术领域,具体涉及一种阻水泡棉胶带及其制备方法与应用。
背景技术
太阳能组件电池片作为太阳能发电的核心部件,封装是将易损坏的太阳能电池封装起来形成物理特性更好的组件,以便于大规模应用太阳能发电。早期双玻组件为降低重量和成本,采用无边框的结构。相对于高分子背板而言,玻璃水透是零,因此双玻组件被认为可用于水面电站、高温高湿地区,且使用寿命会比较长。然而,运行一段时间后发现,水汽非常容易通过光伏组件的边缘渗入。当水汽透过组件边缘进入组件内部会导致组件分层,从而影响太阳能电池的发电效率以及使用寿命,因此光伏组件边缘密封十分重要。
现阶段多采用金属铝框加硅胶形式封装的组件,对于边框材料来说,非铝材料的开发一直都在进行。在着手对不同材料和设计进行大量对比测试后发现,钢边框在高可靠性、可量产性,可适用性的性能、生产、系统匹配测试评估中脱颖而出,面对不断增多的严苛的应用场景,钢边框是比铝边框更适合的选择。相比铝材,钢材的强度更好,且抗撕裂方面有更好的表现,测试显示,钢合金边框安装孔部位抗撕裂能力相比铝边框在相同部位强度高出约30%。同时钢边框成本相对应铝边框有更大的降本空间。
新型钢边框组件,现阶段使用密封硅胶存在一些问题点。铝合金边框可通过模具挤压成型,精度易控;而钢边框采用冷轧折弯工艺,该工艺生产精度难以控制。由于钢边框精度缺陷,导致其边框连接处易出现缝隙,在使用过程中易出现水汽渗入,再加上冷凝现象,水滴在钢边框内部凝聚,易导致钢边框从内部腐蚀等问题。另外,目前多使用硅胶来密封铝框,但硅胶与钢板的相容性相对较差,后期在二者界面处容易出现裂缝。此外,随着市场硅胶需求量增大,硅胶成本也在不断增加,为降低成本会在一定程度上减少硅胶的使用量,从而导致了太阳能组件的正面、边框与玻璃之间容易出现缺胶问题。随着这些太阳能组件在户外的长期使用,雨水逐渐从组件正面,即玻璃与边框之间的缝隙中逐渐流入,随着时间的积累,水汽逐渐渗透到组件内部;硅胶老化及边缘缺胶,使得水汽进入组件内部导致低绝缘。
由此可知,目前采用硅胶密封光伏组件边框存在成本高、相容性差异大等问题,且硅胶老化及缺胶问题易引发严重的安全问题。
发明内容
本发明要解决的技术问题是提供一种阻水泡棉胶带及其制备方法与应用,采用具有新型阻水胶凝剂制备阻水胶层,并与阻水泡棉基材层复合得到阻水泡棉胶带,其中泡棉基材平衡了高服帖性和高内聚强度,且柔软性好,便于与光伏组件边框进行粘结、贴合,且制备的阻水压敏胶层具有高粘结性且耐候性好,在户外长期使用不易出现脆化、脱落、变黄等问题,包含上述阻水泡棉基材以及阻水压敏胶层的阻水泡棉胶带,表现出优异的阻水性能。
为了解决上述技术问题,本发明提供以下技术方案:
本发明第一方面提供了一种阻水泡棉胶带,所述阻水泡棉胶带包括泡棉基材层,与所述泡棉基材层上表面相贴合的第一阻水压敏胶层、与所述泡棉基材层下表面相贴合的第二阻水压敏胶层、以及与所述第一阻水压敏胶层上表面相贴合的离型膜层;
所述第一阻水压敏胶层与第二阻水压敏胶层由阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂包括按质量份数计的以下组分:100份溶剂型压敏胶、0.2~10份固化剂、1~15份抗氧化剂、1~5份紫外吸收剂、10~30份增粘树脂、3~5份阻水聚合物以及25~60份有机溶剂。
进一步地,所述泡棉基材层的材质为聚氨酯泡棉、电子交联聚乙烯泡棉、辐射交联聚丙烯泡棉、乙烯-醋酸乙烯酯共聚物泡棉、丙烯酸泡棉或有机硅泡棉;所述泡棉基材的厚度为0.5~3mm,密度为0.4~0.9g/cm3,压缩变形率≤5%,发泡方式为独立闭孔发泡结构。
本发明选择具有气泡结构、密度小且柔性好的泡棉材料作为基材,这类基材的导热系数低、不吸收且防渗透性能好,耐腐蚀性以及耐老化性能好,且易于和胶层复合,与胶层的界面结合力强,不易出现分层问题。
进一步地,所述阻水聚合物选自氯丁橡胶、丁基橡胶、聚异丁烯、苯乙烯嵌段共聚物、聚烯烃嵌段共聚物、丙烯酸共聚物、聚氨酯、丁腈橡胶、三元乙丙橡胶中的一种或多种。通过在胶层中引入阻水聚合物,由于侧链排列密集,限制了胶层中聚合物分子的热运动,而气体(水汽)通过聚合物的扩散速度和聚合物分子的热运动有关,因此,阻水聚合物的存在降低了胶层的透气率,从而提高了胶层的阻水性能;且本发明添加的这类阻水聚合物具有良好的热稳定性以及耐老化性,可进一步提高胶层的稳定性。
进一步地,所述溶剂型压敏胶选自聚氨酯型压敏胶、有机硅压敏胶、丙烯酸压敏胶、天然橡胶基体的压敏胶、合成橡胶基体的压敏胶中的一种或多种。
进一步地,所述溶剂型压敏胶优选丙烯酸压敏胶和有机硅压敏胶。其中,丙烯酸压敏胶主要是由丙烯酸酯单体共聚而成,粘结强度高且粘结性能好,与多孔的基体表面具有良好的粘附性,且持粘性好。有机硅压敏胶具有良好的耐高低温性能,能在-100℃~260℃的广泛温度内长期使用,具有良好的化学惰性(例如耐水性、耐候性、耐腐蚀性、耐酸碱性好等优点),且由其形成的胶层柔韧性好、减震性能强,可对聚烯烃、含氟聚合物和有机硅隔离纸等难粘材料进行粘接,甚至能够粘接带有湿气和油的界面,与各种材料的相容性好。
进一步地,所述固化剂选自环氧型交联剂、异氰酸酯类交联剂、有机过氧化物、金属氧化物中的一种或多种,更优选环氧型交联剂和/或异氰酸酯类交联剂。交联剂用以控制压敏胶的交联度,提高胶层的耐温性、耐热性、耐水性以及使其高温不易分解,但交联剂在胶黏层中的含量要适中,含量多低,压敏胶的交联程度低,剥离时易出现残胶现象,若含量过高,压敏胶过度交联则导致粘性较低。
进一步地,所述抗氧化剂选自芳香胺类抗氧剂、受阻酚类抗氧剂、辅助抗氧剂中的一种或多种,更优选芳香胺类抗氧剂和/或受阻酚类抗氧剂。在胶层中加入少量抗氧化剂,可延缓或抑制聚合物氧化过程的进行,从而阻止聚合物的老化并延长其使用寿命。
进一步地,所述紫外吸收剂选自水杨酸酯类、苯酮类、苯并三唑类、取代丙烯腈类、三嗪类与受阻胺类复配物中的一种或多种,更优选水杨酸酯类、苯酮类、苯并三唑类中的一种或多种。紫外吸收剂是一种光稳定剂,能吸收阳光及荧光光源中的紫外线部分,而本身又不发生变化,本发明在胶黏剂中引入少量紫外吸收剂,以吸收高能量紫外线,减缓胶层老化程度。
进一步地,所述增粘树脂选自松香树脂、改性松香树脂、萜烯树脂、合成石油树脂中一种或多种。
进一步地,所述有机溶剂选自乙酸丁酯、乙酸乙酯、甲苯、二甲苯、甲基乙基酮、甲基异丁基酮、环己酮中的一种或多种。
进一步地,所述第一、第二阻水压敏胶层的厚度相同或不相同,为20μm~60μm种。
进一步地,根据GBT 2792-2014胶粘带剥离强度的试验方法测试剥离力,所述阻水泡棉胶带胶层的剥离强度≥15N/25mm;根据GB/T 15331-2020压敏胶粘带水蒸气透过率试验方法测试水汽透过率,所述阻水泡棉胶的水汽透过率≤15g(m2·day)。
进一步地,所述离型膜层的材料为双面离型的聚酯离型膜或聚乙烯淋膜离型纸,所述离型膜层包括重离型面和轻离型面,所述重离型面与轻离型面的离型力比为1:2~4。
进一步地,所述离型膜层的厚度为25~150μm。
本发明第二方面提供了一种第一方面所述阻水泡棉胶带的制备方法,包括以下步骤:
(1)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值均大于48dyn/cm;将溶剂型压敏胶、固化剂抗氧化剂、紫外吸收剂、增粘树脂、阻水聚合物以及有机溶剂按比例混合均匀,控制固含量为20%~50%,得到阻水压敏胶黏剂;
(2)将步骤(1)制备的阻水压敏胶黏剂涂布在第一离型膜的一侧上,干燥处理后与步骤(1)处理后的泡棉基材的一面进行复合收卷;再将阻水压敏胶黏剂涂布在第二离型膜的一侧上,干燥处理后与上述泡棉基材的另一面进行复合,剥离第一或第二离型膜,收卷熟化。
进一步地,步骤(1)中,对泡棉基材进行双面电晕预处理,提高基材双面的达因值,提高泡棉基材双面的润湿性,进而提高胶层与泡棉基材的界面结合力。
进一步地,步骤(2)中,当所述第一、第二离型膜为具有轻离型面以及重离型面的双面离型膜,所述阻水压敏胶黏剂涂布在第一离型膜的轻离型面上,干燥处理后与步骤(1)处理后的泡棉基材的一面进行复合收卷,再将阻水压敏胶黏剂涂布在第二离型膜的重离型面上,剥离第一离型膜,收卷熟化。
进一步地,步骤(2)中,所述干燥处理具体为:以15~30m/min的速度依次通过七节烘箱,其中,第一节烘箱的温度为80℃、第二节烘箱的温度为90℃、第三节烘箱的温度为110℃、第四节烘箱的温度为120℃、第五节烘箱的温度为130℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
本发明第三方面提供了一种第一方面所述的阻水泡棉胶带在太阳能组件封装方面的应用。
进一步地,所述太阳能组件为钢边框组件。
与现有技术相比,本发明的有益效果:
1.本发明提供了一种阻水泡棉胶带,以泡棉材料为基材与新型阻水压敏胶黏剂制备的阻水压敏胶层复合制备得到,其中泡棉基材的存在使阻水胶带同时具备高贴附性以及高内聚强度,且柔软性好,使胶带便于与光伏组件边框贴合、粘接;此外,本发明制备的阻水泡棉胶带具有阻水压敏胶层,该胶层与具有多孔结构的泡棉基材的结合强度高,且与钢材具有良好的相容性,粘结强度高,该阻水压敏胶层的耐候性好,在户外长期使用不易出现脆化、脱落、变黄等问题。
2.相较于硅胶搭配钢边框组件的密封性,采用本发明制备的阻水泡棉胶搭配钢边框组件的密封性能更优,表现出更好的阻水性能,在光伏组件密封以及其它防水密封方面具有良好的应用前景。
实施方式
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
下面结合具体实施例对本发明作进一步说明,以使本领域的技术人员可以更好地理解本发明并能予以实施,但所举实施例不作为对本发明的限定。
实施例1
本实施例涉及一种阻水泡棉胶带的制备,所述阻水泡棉胶带由上至下包括第一离型膜层、第一阻水压敏胶层、泡棉基材层、第二阻水压敏胶层。其中,离型膜为双面离型的聚酯离型膜,厚度为50μm,双面离型力不同,轻离型面离型力在10~15g,重离型面离型力在30~40g;泡棉基材选择辐射交联聚丙烯泡棉,厚度1.0mm,密度0.6g/cm3,压缩率3.4%,发泡方式为独立闭孔发泡结构,颜色黑色;第一、第二阻水压敏胶层由以下配方组成的阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂的配方如表1所示:
表1阻水压敏胶黏剂的配方
本实施例阻水泡棉胶带的制备包括以下步骤:
(1)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值>48dyn/cm;根据上述阻水压敏胶黏剂配方,将各组分混合均匀并控制固含量为40%,得到阻水压敏胶黏剂;
(2)将阻水压敏胶黏剂涂布在第一双面离型膜的轻离型面上,胶层厚度为40μm,经过干燥处理后再与步骤(1)中电晕处理的泡棉基材面进行复合;再将阻水压敏胶黏剂涂布在第而双面离型膜的重离型面上,胶层厚度为40μm,经过干燥处理后再与上述泡棉基材的另一面进行复合,同时剥离第一双面离型膜收卷,在45℃熟化48h。
步骤(2)中,干燥处理在烘箱中完成,以25m/min的速度依次通过七节烘箱,第一节烘箱的温度为80℃、第二节烘箱的温度为90℃、第三节烘箱的温度为110℃、第四节烘箱的温度为120℃、第五节烘箱的温度为130℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
实施例2
本实施例涉及一种阻水泡棉胶带的制备,所述阻水泡棉胶带由上至下包括第一离型膜层、第一阻水压敏胶层、泡棉基材层、第二阻水压敏胶层。其中,离型膜为双面离型的聚酯离型膜,厚度为50μm,双面离型力不同,轻离型面离型力在10~15g,重离型面离型力在30~40g;泡棉基材选择辐射交联聚丙烯泡棉,厚度1.0mm,密度0.6g/cm3,压缩率4.1%,发泡方式为独立闭孔发泡结构,颜色黑色;第一、第二阻水压敏胶层由以下配方组成的阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂的配方如表2所示:
表2阻水压敏胶黏剂的配方
本实施例阻水泡棉胶带的制备包括以下步骤:
(1)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值>48dyn/cm;根据上述阻水压敏胶黏剂配方,将各组分混合均匀并控制固含量为40%,得到阻水压敏胶黏剂;
(2)将阻水压敏胶黏剂涂布在第一双面离型膜的轻离型面上,胶层厚度为40μm,经过干燥处理后再与步骤(1)中电晕处理的泡棉基材面进行复合;再将阻水压敏胶黏剂涂布在第而双面离型膜的重离型面上,胶层厚度为40μm,经过干燥处理后再与上述泡棉基材的另一面进行复合,同时剥离第一双面离型膜收卷,在45℃熟化48h。
步骤(2)中,干燥处理在烘箱中完成,以25m/min的速度依次通过七节烘箱,第一节烘箱的温度为80℃、第二节烘箱的温度为90℃、第三节烘箱的温度为110℃、第四节烘箱的温度为120℃、第五节烘箱的温度为130℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
实施例3
本实施例涉及一种阻水泡棉胶带的制备,所述阻水泡棉胶带由上至下包括第一离型膜层、第一阻水压敏胶层、泡棉基材层、第二阻水压敏胶层。其中,离型膜为双面离型的聚酯离型膜,厚度为50μm,双面离型力不同,轻离型面离型力在10~15g,重离型面离型力在30~40g;泡棉基材选择丙烯酸体发泡泡棉,厚度1.0mm,密度0.65g/cm3,压缩率3.8%,发泡方式为独立闭孔发泡结构,颜色黑色;第一、第二阻水压敏胶层由以下配方组成的阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂的配方如表3所示:
表3阻水压敏胶黏剂的配方
本实施例阻水泡棉胶带的制备包括以下步骤:
(3)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值>48dyn/cm;根据上述阻水压敏胶黏剂配方,将各组分混合均匀并控制固含量为40%,得到阻水压敏胶黏剂;
(4)将阻水压敏胶黏剂涂布在第一双面离型膜的轻离型面上,胶层厚度为50μm,经过干燥处理后再与步骤(1)中电晕处理的泡棉基材面进行复合;再将阻水压敏胶黏剂涂布在第而双面离型膜的重离型面上,胶层厚度为50μm,经过干燥处理后再与上述泡棉基材的另一面进行复合,同时剥离第一双面离型膜收卷,在45℃熟化48h。
步骤(2)中,干燥处理在烘箱中完成,以25m/min的速度依次通过七节烘箱,第一节烘箱的温度为80℃、第二节烘箱的温度为90℃、第三节烘箱的温度为110℃、第四节烘箱的温度为120℃、第五节烘箱的温度为130℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
实施例4
本实施例涉及一种阻水泡棉胶带的制备,所述阻水泡棉胶带由上至下包括第一离型膜层、第一阻水压敏胶层、泡棉基材层、第二阻水压敏胶层。其中,离型膜为氟素离型的双面离型聚酯离型膜,厚度为50μm,双面离型力不同,轻离型面离型力在10~15g,重离型面离型力在30~40g;泡棉基材选择有机硅发泡泡棉,厚度1.0mm,密度0.6g/cm3,压缩率4.1%,发泡方式为独立闭孔发泡结构,颜色黑色;第一、第二阻水压敏胶层由以下配方组成的阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂的配方如表4所示:
表4阻水压敏胶黏剂的配方
本实施例阻水泡棉胶带的制备包括以下步骤:
(3)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值>48dyn/cm;根据上述阻水压敏胶黏剂配方,将各组分混合均匀并控制固含量为40%,得到阻水压敏胶黏剂;
(4)将阻水压敏胶黏剂涂布在第一双面离型膜的轻离型面上,胶层厚度为50μm,经过干燥处理后再与步骤(1)中电晕处理的泡棉基材面进行复合;再将阻水压敏胶黏剂涂布在第而双面离型膜的重离型面上,胶层厚度为50μm,经过干燥处理后再与上述泡棉基材的另一面进行复合,同时剥离第一双面离型膜收卷,在45℃熟化48h。
步骤(2)中,干燥处理在烘箱中完成,以15m/min的速度依次通过七节烘箱,第一节烘箱的温度为80℃、第二节烘箱的温度为100℃、第三节烘箱的温度为120℃、第四节烘箱的温度为150℃、第五节烘箱的温度为150℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
对比例1
本对比例涉及一种阻水泡棉胶带的制备,与实施例1的区别仅在于:制备的阻水压敏胶黏剂中不包含阻水聚合物(聚异丁烯),其它组分以及制备方法均相同。
对比例2
本对比例涉及一种阻水泡棉胶带的制备,与实施例2的区别仅在于:制备的阻水压敏胶黏剂中不包含固化剂(六亚甲基二氰酸酯),其它组分以及制备方法均相同。
对比例3
本对比例涉及一种阻水泡棉胶带的制备,与实施例1的区别仅在于:制备的阻水压敏胶黏剂中阻水材料更换成阻水高分子物质蜡粉(聚乙烯蜡或氧化聚乙烯蜡),其它组分以及制备方法均相同。
对比例4
本对比例涉及一种阻水泡棉胶带的制备,与实施例1的区别仅在于:制备的泡棉基材选择丙烯酸体发泡泡棉,厚度1.0mm,密度0.3g/cm3,压缩率50%,发泡方式为连续看空发泡结构,其它组分以及制备方法均相同。
性能测试
对上述实施例及对比例制备的阻水泡棉胶带的性能进行测试,测试标准如下:
厚度测试:参考GBT 7125-2014胶粘带厚度的试验方法;
剥离力测试:参考GBT 2792-2014胶粘带剥离强度的试验方法;
动态剪切强度:参考GBT 33332-2016胶粘带动态剪切强度的试验方法;动态剪切强度的测试主要反映成品泡棉胶带的内聚力,就是材料本身抵抗外界作用的能力;
机械性能测试:参考GB/T 30776-2014胶粘带拉伸强度与断裂伸长率的试验方法;
水汽透过率测试:GB/T 15331-2020中压敏胶粘带水蒸气透过率试验方法进行测试。
测试及计算结果如下表5所示:
表5不同实施例及对比例制备的阻水泡棉胶带的性能数据
由表5可知,本发明实施例1~4制备的阻水泡棉胶带在高温、低温条件下的剥离力大、动态剪切强度高,拉伸强度、断裂伸长率等机械性能均较优,且较之于胶层中不包含阻水聚合物的对比例1,实施例1制备的胶带的水汽透过率显著下降,表现出优异的阻水性能。
相比较于实施例2,对比例2制备的阻水泡棉胶带的胶层中不包含固化剂,胶带的剥离力减小,动态剪切强度高明显降低;相比较于实施例1,对比例3制备的阻水泡棉胶带的胶层中包含阻水高分子物质蜡粉但不包含阻水聚合物,蜡粉的引入降低了胶层的剥离力以及动态剪切强度,相比较于对比例1,添加阻水蜡粉制备的对比例3,其阻水性能并未提升;相比较于其它实施例及对比例制备的胶带,对比例4采用低密度的丙烯酸体发泡泡沫作为泡棉基材,其阻水性能显著下降。
采用本发明实施例1制备的阻水泡棉胶带以及市售的硅胶用于搭配钢边框来封装太阳能组件,测试不同密封处理得到的太阳能组件的绝缘密封性能,测试标准参考组件绝缘性能测试IEC61215,测试结果如下表6所示:
表6太阳能组件绝缘密封性能对比
由表6可知,经过长期湿热实验以及循环湿冻实验测试,由阻水泡棉胶带搭配钢边框密封的太阳能组件的绝缘性更好,由此可知,采用本发明制备的阻水泡棉胶带搭配钢边框用以密封太阳能组件,其密封性要优于硅胶。
以上所述实施例仅是为充分说明本发明而所举的较佳的施例,本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换,均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。
Claims (10)
1.一种阻水泡棉胶带,其特征在于,所述阻水泡棉胶带包括泡棉基材层,与所述泡棉基材层上表面相贴合的第一阻水压敏胶层、与所述泡棉基材层下表面相贴合的第二阻水压敏胶层、以及与所述第一阻水压敏胶层上表面相贴合的离型膜层;
所述第一阻水压敏胶层与第二阻水压敏胶层由阻水压敏胶黏剂制备得到,所述阻水压敏胶黏剂包括按质量份数计的以下组分:100份溶剂型压敏胶、0.2~10份固化剂、1~15份抗氧化剂、1~5份紫外吸收剂、10~30份增粘树脂、3~5份阻水聚合物以及25~60份有机溶剂。
2.根据权利要求1所述的阻水泡棉胶带,其特征在于,所述泡棉基材层的材质为聚氨酯泡棉、电子交联聚乙烯泡棉、辐射交联聚丙烯泡棉、乙烯-醋酸乙烯酯共聚物泡棉、丙烯酸泡棉或有机硅泡棉;所述泡棉基材的厚度为0.5~3mm,密度为0.4~0.9g/cm3,压缩变形率≤5%,发泡为独立闭孔发泡结构。
3.根据权利要求1所述的阻水泡棉胶带,其特征在于,所述阻水聚合物选自氯丁橡胶、丁基橡胶、聚异丁烯、苯乙烯嵌段共聚物、聚烯烃嵌段共聚物、丙烯酸共聚物、聚氨酯、丁腈橡胶、三元乙丙橡胶中的一种或多种。
4.根据权利要求1所述的阻水泡棉胶带,其特征在于,所述溶剂型压敏胶选自聚氨酯型压敏胶、有机硅压敏胶、丙烯酸压敏胶、天然橡胶基体的压敏胶、合成橡胶基体的压敏胶中的一种或多种;
所述固化剂选自环氧型交联剂、异氰酸酯类交联剂、有机过氧化物、金属氧化物中的一种或多种;
所述抗氧化剂选自芳香胺类抗氧剂、受阻酚类抗氧剂、辅助抗氧剂中的一种或多种;
所述紫外吸收剂选自水杨酸酯类、苯酮类、苯并三唑类、取代丙烯腈类、三嗪类与受阻胺类复配物中的一种或多种;
所述增粘树脂选自松香树脂、改性松香树脂、萜烯树脂、合成石油树脂中一种或多种;
所述有机溶剂选自乙酸丁酯、乙酸乙酯、甲苯、二甲苯、甲基乙基酮、甲基异丁基酮、环己酮中的一种或多种。
5.根据权利要求1所述的阻水泡棉胶带,其特征在于,所述第一、第二阻水压敏胶层的厚度相同或不相同,为20μm~60μm。
6.根据权利要求1所述的阻水泡棉胶带,其特征在于,根据GBT 2792-2014胶粘带剥离强度的试验方法测试剥离力,所述阻水泡棉胶带胶层的剥离强度≥15N/25mm;根据GB/T15331-2020压敏胶粘带水蒸气透过率试验方法测试水汽透过率,所述阻水泡棉胶的水汽透过率≤15g(m2·day)。
7.根据权利要求1所述的阻水泡棉胶带,其特征在于,所述离型膜层的材料为双面离型的聚酯离型膜或聚乙烯淋膜离型纸,所述离型膜层包括重离型面和轻离型面,所述重离型面与轻离型面的离型力比为1:2~4。
8.一种权利要求1~7任一项所述阻水泡棉胶带的制备方法,其特征在于,包括以下步骤:
(1)对泡棉基材进行双面电晕预处理,使泡棉基材双面的达因值均大于48dyn/cm;将溶剂型压敏胶、固化剂抗氧化剂、紫外吸收剂、增粘树脂、阻水聚合物以及有机溶剂按比例混合均匀,控制固含量为20%~50%,得到阻水压敏胶黏剂;
(2)将步骤(1)制备的阻水压敏胶黏剂涂布在第一离型膜的一侧上,干燥处理后与步骤(1)处理后的泡棉基材的一面进行复合收卷;再将阻水压敏胶黏剂涂布在第二离型膜的一侧上,干燥处理后与上述泡棉基材的另一面进行复合,剥离第一或第二离型膜,收卷熟化。
9.一种权利要求8所述的制备方法,其特征在于,步骤(2)中,所述干燥处理具体为:以15~30m/min的速度依次通过七节烘箱,其中,第一节烘箱的温度为80℃、第二节烘箱的温度为90℃、第三节烘箱的温度为110℃、第四节烘箱的温度为120℃、第五节烘箱的温度为130℃、第六节烘箱的温度为120℃、第七节烘箱的温度为110℃。
10.一种权利要求1~7任一项所述的阻水泡棉胶带在太阳能组件封装方面的应用。
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