CN104774562A - Waterproof sealant for photovoltaic modules - Google Patents
Waterproof sealant for photovoltaic modules Download PDFInfo
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- CN104774562A CN104774562A CN201510118792.7A CN201510118792A CN104774562A CN 104774562 A CN104774562 A CN 104774562A CN 201510118792 A CN201510118792 A CN 201510118792A CN 104774562 A CN104774562 A CN 104774562A
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Abstract
The invention discloses a waterproof sealant for photovoltaic modules. The sealant is composed of the following components in parts by weight: 82 to 84 parts of ethyl dimethoxy siloxy terminated polydimethyl silane, 16 to 18 parts of polyisobutene, 15 to 17 parts of methyl acrylate, 14 to 16 parts of methyl silicone oil, 6 to 8 parts of cerium oxide, 10 to 12 parts of titanium oxide, 22 to 26 parts of 200-mesh diatomite, 4 to 6 parts of 120-mesh hollow glass beads, 35 to 37 parts of nano active light calcium carbonate, 6 to 8 parts of aluminum hydroxide, 8 to 10 parts of magnesium hydroxide, 16 to 18 parts of methyl triethyoxy silane, 6 to 8 parts of aminopropyl triethyoxy silane, and 0.3 to 0.5 part of dibutyl tin dilaurate; wherein ethyl dimethoxy siloxy terminated polydimethyl silane, polyisobutene and methyl acrylate are taken as the basic materials, methyl silicone oil, cerium oxide, and titanium oxide form the performance modulating unit, and 200-mesh diatomite and 120-mesh hollow glass beads form the water absorbing unit.
Description
Technical field
The present invention relates to sealing material technical field, particularly a kind of waterproof gasket cement for photovoltaic module.
Background technology
Glass cement as solar module has been reported in Chinese patent literature, wherein have two component and single-component point, glass cement condensed type double-component glass cement disclosed in application for a patent for invention publication number CN1528821A of two component, single-component silicone glass cement of a kind of solar module that the glass cement of single-component is introduced as application for a patent for invention publication number CN101353563A and preparation method thereof.Wherein, a patent application indicates the shortcoming of last patent application, and to quick-setting room temperature vulcanized silicone rubber disclosed in US Patent No. 5238988 when applying, whether there will be flavescence and proposing query.Therefore, CN101353563A adopts petroleum resin and filler to promote the steam-preventing through performance of glass cement, but, because petroleum resin are mostly the multipolymer of ethylenic unsaturation hydro carbons, lipid and arene, its relative molecular weight reaches 200-3000, show very active in reaction and solidification process, volatile and precipitation.And petroleum resin have certain fragility, and petroleum resin are insoluble to lower alcohol and ketones solvent, thus can't show gratifying degree to what prevent water vapor through effect.Why not mentioned result of testing according to relevant provision some technical indicator to silicone glass cement in CNS GB/T9395 table 1 in the specification sheets of this patent application, perhaps be caused by this reason, namely owing to employing petroleum resin, steam-preventing transmitance (g/m
2d) be difficult to control to≤1.
In recent years, solar module development is swift and violent, reason as known in industry, solar module is installed on outdoor, except requiring to have except good UV resistant irradiation performance, excellent high and low temperature resistance and corrosion resistance nature, also require that there is good stopping property, namely quite harsh to the through performance of water-repellancy and water vapor.Again because the life cycle of solar module reaches 20-30 doubly usually, therefore the sealing effectiveness of glass cement must meet this time requirement, even higher than (being longer than) this time span.
The silicon single crystal of solar module or the surface of polycrystal silicon cell plate are all pasted with the thin film for implementing protection to silicon single crystal or polysilicon be made up of matrix material, therefore water vapor is once penetrate into glass cement inside, just aforesaid film can be affected, and then the mildew phenomena caused in silicon single crystal or polysilicon interlayer, and then, because film itself is not by glass cement used corrosion or because glass cement occurs that monomer is separated out in the curing process, thus make film occur xanthochromia (yellowing) phenomenon, work-ing life of solar cell wafer and aforesaid silicon single crystal or polysilicon and photoelectric transformation efficiency are had an impact, more particularly, the work-ing life of silicon chip can be shortened and reduce photoelectric transformation efficiency.
At present, industry is all explored being devoted to the glass cement to solar module, makes every effort to the transmitance (g/m making water vapor
2d)≤1, and the phase get glass cement in the curing process and solidification after all there will not be monomer separate out phenomenon, meet this two conditions because only have, the film be attached on silicon chip just can be avoided to occur yellowing, and then ensure work-ing life and the photoelectric transformation efficiency of silicon chip.But, in published document, be not seen in the technology enlightenment of being used for reference, and do not hear the report having business success yet.
Summary of the invention
For the deficiencies in the prior art, an object of the present invention is to provide a kind of waterproof gasket cement for photovoltaic module, and sealing glue has excellent water resistance when keeping the mechanical property of seal gum in prior art, electric property and adhesive property.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 82-84 part, polyisobutene 16-18 part, methyl acrylate 15-17 part, three forms base-material jointly, methyl-silicone oil 14-16 part, cerium oxide 6-8 part, titanium oxide 10-12 part, three is performance allotment constituent element ,-200 order diatomite 22-26 parts,-120 order hollow glass micropearl 4-6 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 35-37 part, aluminium hydroxide 6-8 part, magnesium hydroxide 8-10 part, Union carbide A-162 16-18 part and aminopropyl triethoxysilane 6-8 part and dibutyl tin laurate 0.3-0.5 part.
Sealing glue can be prepared as follows: first by ethyl dimethoxy siloxy end-blocking polydimethylsiloxane, polyisobutene, dewater in methyl acrylate input vacuum kneader blended, control kneading temperature is 135-145 DEG C, control vacuum tightness is 0.04-0.05MPa, proceed to after blended 20-25 minute in stirring tank to stir and be cooled to room temperature, obtain base-material, then by methyl-silicone oil, cerium oxide, titanium oxide,-200 order diatomite,-120 order hollow glass micropearls, nano active light calcium carbonate, aluminium hydroxide, magnesium hydroxide, Union carbide A-162 and aminopropyl triethoxysilane are put into base-material in stirring tank with described and are mixed, control vacuum tightness is 0.04-0.05MPa, the rotating speed of the agitator of stirring tank is 350-450r/min, the time of being uniformly mixed is 120-150min, dibutyl tin laurate remix is added after mixing terminates, controlling the remix time is 35-45min, the waterproof gasket cement for photovoltaic module is obtained after remix terminates.
Described nano active light calcium carbonate is by the nano active light calcium carbonate of lipid acid, silane coupling agent or resinous acid modification.
Described aluminium hydroxide or magnesium hydroxide are by the magnesium hydroxide of lipid acid, silane coupling agent or resinous acid modification and aluminium hydroxide.
The present invention has following beneficial effect:
1) on the basis of great many of experiments, determine material choice and the content proportioning of the filler in seal gum, and with other component rational proportion, make it reach collaborative technique effect, and then pass through the temperature of optimized fabrication process, the processing parameters such as time, make the excellent performance of the seal gum prepared, sealing glue possesses the mechanical property of conventional seal gum: 100% tensile elongation modulus is 0.8-0.9MPa, and elongation at break 630-650%, mechanical property meets user demand.
2) by selecting waterproof absorbent composition material diatomite and hollow glass micropearl, particularly define the granularity selection of the two, and the content proportioning of the two, when making not affect seal gum traditional performance its waterproof and water absorbing properties excellent: water vapor transmittance is less than 0.6g/m
2.d, desirable water vapor rejection effect can be played.Prove to only have the composition of employing "-200 order diatomite 22-26 parts ,-120 order hollow glass micropearl 4-6 parts " through test, just can reach the perfect coordination of mechanical property and water resistance, the change of change of granularity or composition and ratio, or will affect the mechanical properties, or affects steam breathability energy.And the composition and ratio of above-mentioned waterproof absorbent composition needs the suitable adjustment of matrix and other components to coordinate the results of property that just can be achieved above-mentioned excellence.
Embodiment
Embodiment one
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 82 parts, polyisobutene 18 parts, methyl acrylate 15 parts, three forms base-material jointly, methyl-silicone oil 16 parts, cerium oxide 6 parts, titanium oxide 12 parts, three is performance allotment constituent element ,-200 22 parts, order diatomite,-120 order hollow glass micropearls 6 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 35 parts, 8 parts, aluminium hydroxide, magnesium hydroxide 8 parts, Union carbide A-162 18 parts and aminopropyl triethoxysilane 6 parts and dibutyl tin laurate 0.5 part.
Aforesaid method of the present invention is adopted to prepare.
Sealing colloidality energy: 100% tensile elongation modulus is 0.8MPa, and elongation at break 650%, water vapor transmittance is less than 0.6g/m
2.d.
Embodiment two
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 84 parts, polyisobutene 16 parts, methyl acrylate 17 parts, three forms base-material jointly, methyl-silicone oil 14 parts, cerium oxide 8 parts, titanium oxide 10 parts, three is performance allotment constituent element ,-200 26 parts, order diatomite,-120 order hollow glass micropearls 4 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 37 parts, 6 parts, aluminium hydroxide, magnesium hydroxide 10 parts, Union carbide A-162 16 parts and aminopropyl triethoxysilane 8 parts and dibutyl tin laurate 0.3 part.
Aforesaid method of the present invention is adopted to prepare.
Sealing colloidality energy: 100% tensile elongation modulus is 0.85MPa, and elongation at break 630%, water vapor transmittance is less than 0.5g/m
2.d.
Embodiment three
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 83 parts, polyisobutene 17 parts, methyl acrylate 16 parts, three forms base-material jointly, methyl-silicone oil 15 parts, cerium oxide 7 parts, titanium oxide 11 parts, three is performance allotment constituent element ,-200 24 parts, order diatomite,-120 order hollow glass micropearls 5 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 36 parts, 7 parts, aluminium hydroxide, magnesium hydroxide 9 parts, Union carbide A-162 17 parts and aminopropyl triethoxysilane 7 parts and dibutyl tin laurate 0.4 part.
Sealing colloidality energy: 100% tensile elongation modulus is 0.9MPa, and elongation at break 640%, water vapor transmittance is less than 0.5g/m
2.d.
Comparative example one
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 83 parts, polyisobutene 17 parts, methyl acrylate 16 parts, three forms base-material jointly, methyl-silicone oil 15 parts, cerium oxide 7 parts, titanium oxide 11 parts, three is performance allotment constituent element ,-100 24 parts, order diatomite,-200 order hollow glass micropearls 5 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 36 parts, 7 parts, aluminium hydroxide, magnesium hydroxide 9 parts, Union carbide A-162 17 parts and aminopropyl triethoxysilane 7 parts and dibutyl tin laurate 0.4 part.
Aforesaid method of the present invention is adopted to prepare.
Sealing colloidality energy: 100% tensile elongation modulus is 0.7MPa, and elongation at break 600%, water vapor transmittance is less than 0.7g/m
2.d.
Comparative example two
A kind of waterproof gasket cement for photovoltaic module, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 83 parts, polyisobutene 17 parts, methyl acrylate 16 parts, three forms base-material jointly, methyl-silicone oil 15 parts, cerium oxide 7 parts, titanium oxide 11 parts, three is performance allotment constituent element ,-200 20 parts, order diatomite,-120 order hollow glass micropearls 8 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 36 parts, 7 parts, aluminium hydroxide, magnesium hydroxide 9 parts, Union carbide A-162 17 parts and aminopropyl triethoxysilane 7 parts and dibutyl tin laurate 0.4 part.
Aforesaid method of the present invention is adopted to prepare.
Sealing colloidality energy: 100% tensile elongation modulus is 0.5MPa, and elongation at break 570%, water vapor transmittance is less than 0.8g/m
2.d.
Applicant states, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, namely do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to equivalence replacement and the interpolation of ancillary component, the concrete way choice etc. of each raw material of product of the present invention, all drops within protection scope of the present invention and open scope.
Claims (3)
1. the waterproof gasket cement for photovoltaic module, it is characterized in that, described seal gum is made up of following component with parts by weight: ethyl dimethoxy siloxy end-blocking polydimethylsiloxane 82-84 part, polyisobutene 16-18 part, methyl acrylate 15-17 part, three forms base-material jointly, methyl-silicone oil 14-16 part, cerium oxide 6-8 part, titanium oxide 10-12 part, three is performance allotment constituent element,-200 order diatomite 22-26 parts ,-120 order hollow glass micropearl 4-6 parts, the two is waterproof absorbent function constituent element; And nano active light calcium carbonate 35-37 part, aluminium hydroxide 6-8 part, magnesium hydroxide 8-10 part, Union carbide A-162 16-18 part and aminopropyl triethoxysilane 6-8 part and dibutyl tin laurate 0.3-0.5 part.
2. as claimed in claim 1 for the waterproof gasket cement of photovoltaic module, it is characterized in that, described nano active light calcium carbonate is by the nano active light calcium carbonate of lipid acid, silane coupling agent or resinous acid modification.
3. the waterproof gasket cement for photovoltaic module as described in claim 1-2, is characterized in that, described aluminium hydroxide or magnesium hydroxide are by the magnesium hydroxide of lipid acid, silane coupling agent or resinous acid modification and aluminium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118792.7A CN104774562A (en) | 2015-03-18 | 2015-03-18 | Waterproof sealant for photovoltaic modules |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510118792.7A CN104774562A (en) | 2015-03-18 | 2015-03-18 | Waterproof sealant for photovoltaic modules |
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| CN104774562A true CN104774562A (en) | 2015-07-15 |
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| CN201510118792.7A Pending CN104774562A (en) | 2015-03-18 | 2015-03-18 | Waterproof sealant for photovoltaic modules |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004224929A (en) * | 2003-01-23 | 2004-08-12 | Fujikura Ltd | Flame-retardant adhesive admixture |
| CN101792653A (en) * | 2010-03-19 | 2010-08-04 | 江苏明昊新材料科技有限公司 | Sealant for acrylic ester modified solar photovoltaic module and preparation method thereof |
| CN101805585A (en) * | 2010-03-18 | 2010-08-18 | 常熟市恒信粘胶有限公司 | One-component flame retardant solar photovoltaic subassembly sealant and preparation method thereof |
| CN103709987A (en) * | 2013-11-27 | 2014-04-09 | 常熟市赛蒂镶嵌玻璃制品有限公司 | Two-component organosilicon sealant for hollow glass |
-
2015
- 2015-03-18 CN CN201510118792.7A patent/CN104774562A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004224929A (en) * | 2003-01-23 | 2004-08-12 | Fujikura Ltd | Flame-retardant adhesive admixture |
| CN101805585A (en) * | 2010-03-18 | 2010-08-18 | 常熟市恒信粘胶有限公司 | One-component flame retardant solar photovoltaic subassembly sealant and preparation method thereof |
| CN101792653A (en) * | 2010-03-19 | 2010-08-04 | 江苏明昊新材料科技有限公司 | Sealant for acrylic ester modified solar photovoltaic module and preparation method thereof |
| CN103709987A (en) * | 2013-11-27 | 2014-04-09 | 常熟市赛蒂镶嵌玻璃制品有限公司 | Two-component organosilicon sealant for hollow glass |
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Application publication date: 20150715 |