CN103172768A - Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation - Google Patents
Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation Download PDFInfo
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- CN103172768A CN103172768A CN2011104430185A CN201110443018A CN103172768A CN 103172768 A CN103172768 A CN 103172768A CN 2011104430185 A CN2011104430185 A CN 2011104430185A CN 201110443018 A CN201110443018 A CN 201110443018A CN 103172768 A CN103172768 A CN 103172768A
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- 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
Abstract
The invention discloses a method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation. The method comprises the following steps: preparing raw materials, feeding the raw material, controlling the reaction temperature, cleaning, stably processing and dehydrating. PVA (polyvinyl alcohol) is used as the raw material, and the prepared PVB resin is used for producing a laminated film of a solar energy photovoltaic power generation plate, thus the laminated film replaces the prior EVA (ethylene-vinyl acetate) film, so as to greatly improve the transparency, the high temperature resistance and the cold resistance of the power generation plate, and prolong the service life.
Description
Technical field
The present invention relates to photovoltaic material, more particularly, relate to a kind of solar energy power generating PVB process for preparing resins.
Background technology
The laminate structure of traditional solar energy power generating plate is made of sheet glass 1, EVA film 2, solar silicon wafers 3, EVA film 2 and back cover PTP hardboard 4 as shown in Figure 1 from top to down successively.Due to the self character of EVA material, some important indicators of EVA film 2 are as follows: transparency≤90%; Water-intake rate be (20 ℃, 24h)≤0.1%; Degree of crosslinking 〉=85%; Stripping strength 〉=15N/cm; Anti-ultraviolet ageing performance (UV shines 1000h, 83 ℃): xanthochromia index Δ YI≤1; Heat aging property (1000h, 85 ℃): xanthochromia index Δ YI≤2; Wet and heat ageing resistant performance (1000h, RH90%, 85 ℃): xanthochromia index Δ YI≤2.Therefore, in actual use, the transparency of this EVA film 2 is in 90%, and the life-span can only reach 15 years, and is high temperature resistant and winter hardiness is relatively poor, and stripping strength is also relatively poor.In addition, the EVA material of present domestic use mostly is imported materials and items, and is expensive, causes the power generation plate cost higher.
Summary of the invention
For the above-mentioned shortcoming that exists in prior art, the purpose of this invention is to provide a kind of solar energy power generating PVB process for preparing resins, with obtain to have better transparency, high temperature resistant winter hardiness and the EVA equivalent material in longer work-ing life.
For achieving the above object, the present invention adopts following technical scheme:
This solar energy power generating comprises following concrete steps with the PVB process for preparing resins:
A. preparation of raw material, wherein, raw material comprises PVA, ultrapure water, butyraldehyde and the hydrochloric acid of 1400 polymerization degree;
B. feed intake, step comprises: PVA is added carry out 95 ℃ of insulation dissolvings 4 hours in ultrapure water, and forced filtration sampling survey solids content, make the weight ratio of PVA and ultrapure water maintain all the time 100: 1500; Filter is finished and is lowered the temperature after 80 ℃ of maintenances add the full dose butyraldehyde and are incubated 30 minutes; When liquid temperature is 10 ℃, add the full dose hydrochloric acid that diluted with three times of ultrapure waters; And the weight ratio of the PVA in the whole process that feeds intake and ultrapure water, butyraldehyde, hydrochloric acid is 100: 1500: 60: 30;
C. react temperature control, step comprises: hydrochloric acid finishes rear former temperature insulation 1 hour; 15 ℃～25 ℃ heated up 1.5 hours; 25 ℃ are incubated 1 hour; 25 ℃～45 ℃ heated up 2.5 hours; 45 ℃～50 ℃ heated up 1 hour; 50 ℃ are incubated 1 hour; Be cooled to below 30 ℃;
D. washing, step comprises: add ultrapure water to stir after 30 minutes and drain, and repeatedly, until that the PVB resin detects is no acidic, without the chlorine root;
E. stabilizing treatment, step comprises: adding ultrapure water to carry out acid-base neutralisation, and insulation 2 hours after being warming up to 50 ℃, is 8～9 and when remaining unchanged when recording pH value, be cooled to below 30 ℃, then washed twice
F. dehydrate, make the water content of PVB resin below 1.5%.
In steps A, described ultrapure water is water white, obtains by 20 milliliters of 1000 ml water simmer down tos, and its pH value is 6.8-7.2, and the conductivity apparatus measuring resistance is more than 1,000,000 ohm;
Described butyraldehyde is no more than 7 days for distillation, and content is more than 95%;
Described hydrochloric acid is water white CP grade hydrochloric acid.
In step D, described multiplicity is 20 times.
In step e, the ultrapure water that each washing adds is 9: 1 with the weight ratio of the rear PVB resin of reaction.
In technique scheme, solar energy power generating of the present invention comprises preparation of raw material, feeds intake, reacts temperature control, washing, stabilizing treatment and dehydrates six large steps with the PVB process for preparing resins, the present invention is take PVA as raw material, prepared PVB resin, can be used for making the doubling film of solar energy power generating plate, to substitute original EVA film, can greatly improve the transparency of power generation plate, high temperature resistant winter hardiness, and extend its work-ing life.
Description of drawings
Fig. 1 is the laminate structure figure of the solar energy power generating plate of prior art;
Fig. 2 is the main flow chart of PVB process for preparing resins of the present invention.
Embodiment
Further illustrate technical scheme of the present invention below in conjunction with drawings and Examples.
See also shown in Figure 2ly, solar energy power generating of the present invention mainly comprises preparation of raw material, feeds intake, reacts temperature control, washing, stabilizing treatment and dehydrates six large steps with PVB process for preparing resins (PVB is polyvinyl butyral acetal), wherein:
In the preparation of raw material process, raw material comprises PVA (PVA is polyvinyl alcohol), ultrapure water, butyraldehyde and the hydrochloric acid of 1400 polymerization degree, wherein, described ultrapure water is water white, obtain by 20 milliliters of 1000 ml water simmer down tos, its pH value is 6.8-7.2, and the conductivity apparatus measuring resistance is more than 1,000,000 ohm; Described butyraldehyde requires as distillation is no more than 7 days, and content is more than 95%; Described hydrochloric acid is water white CP grade hydrochloric acid (HCL).
In the process of feeding intake, its key step comprises: first above-mentioned PVA is added and carry out 95 ℃ of insulation dissolvings 4 hours in ultrapure water, and forced filtration sampling survey solids content, make the weight ratio of PVA and ultrapure water maintain all the time 100: 1500; Cooling after keeping 80 ℃ to add the full dose butyraldehyde and be incubated 30 minutes after filter is finished; Then when liquid temperature is 10 ℃, add the full dose hydrochloric acid that diluted with three times of ultrapure waters; And the weight ratio of the PVA in the whole process that feeds intake and ultrapure water, butyraldehyde, hydrochloric acid is 100: 1500: 60: 30.
In the reaction temperature control, its key step comprises: former temperature insulation is 1 hour after hydrochloric acid finishes; Then carrying out successively 15 ℃～25 ℃ heated up 1.5 hours; 25 ℃ are incubated 1 hour; 25 ℃～45 ℃ heated up 2.5 hours; 45 ℃～50 ℃ heated up 1 hour; 50 ℃ are incubated 1 hour; At last, be cooled to and carry out washing step below 30 ℃;
In washing process, its key step comprises: add ultrapure water to stir after 30 minutes and drain, and repeatedly (better as 20 times), until that the PVB resin detects is no acidic, without the chlorine root, enter the stabilizing treatment step; Wherein, the each washing ultrapure water that adds and weight ratio of reacting rear PVB resin is 9: 1.
In the stabilizing treatment process, its key step comprises: adding ultrapure water to carry out acid-base neutralisation, and insulation 2 hours after being warming up to 50 ℃, is 8～9 and when remaining unchanged when recording pH value, be cooled to below 30 ℃, then washed twice.
F. dehydrate, the water content of PVB resin is controlled at below 1.5%, can pack with every bag of 500KG, the making that is used for photovoltaic generation PVB doubling film is standby.
Need to prove at this, common PVB resin is mainly that its proportioning and preparation method are different from the present invention for the manufacture of aviation splinter-proof glass, ground shatter proof glass and building safety glass etc. at present.Preparation-obtained PVB resin of the present invention is the white powder thing, it is the photovoltaic generation PVB doubling film that is exclusively used in manufacturing, the PVB doubling film of its made has splendid light transmission, water white transparency, sandwiched multilayer between glass, its light transmission can also be more than 98%, and with silex glass, stronger caking ability arranged, after glass breaking the sea is from film body, adhesive power 〉=70kg/cm
2, high temperature resistantly reach 200 ℃, cold-resistantly can reach-60 ℃, satisfy the use in each place, the whole nation fully, and can reach 30 years work-ing life.Therefore, adopt PVB doubling film to substitute the EVA film, can make power generation plate is all to have in transparency, high temperature resistant cold tolerance or work-ing life significantly to improve, and has not only improved product performance, and has reduced cost.
Those of ordinary skill in the art will be appreciated that, above embodiment illustrates the present invention, and be not to be used as limitation of the invention, as long as in connotation scope of the present invention, all will drop in claims scope of the present invention variation, the modification of the above embodiment.
Claims (4)
1. a solar energy power generating PVB process for preparing resins, is characterized in that,
Comprise following concrete steps:
A. preparation of raw material, wherein, raw material comprises PVA, ultrapure water, butyraldehyde and the hydrochloric acid of 1400 polymerization degree;
B. feed intake, step comprises: PVA is added carry out 95 ℃ of insulation dissolvings 4 hours in ultrapure water, and forced filtration sampling survey solids content, make the weight ratio of PVA and ultrapure water maintain all the time 100: 1500; Filter is finished and is lowered the temperature after 80 ℃ of maintenances add the full dose butyraldehyde and are incubated 30 minutes; When liquid temperature is 10 ℃, add the full dose hydrochloric acid that diluted with three times of ultrapure waters; And the weight ratio of the PVA in the whole process that feeds intake and ultrapure water, butyraldehyde, hydrochloric acid is 100: 1500: 60: 30;
C. react temperature control, step comprises: hydrochloric acid finishes rear former temperature insulation 1 hour; 15 ℃～25 ℃ heated up 1.5 hours; 25 ℃ are incubated 1 hour; 25 ℃～45 ℃ heated up 2.5 hours; 45 ℃～50 ℃ heated up 1 hour; 50 ℃ are incubated 1 hour; Be cooled to below 30 ℃;
D. washing, step comprises: add ultrapure water to stir after 30 minutes and drain, and repeatedly, until that the PVB resin detects is no acidic, without the chlorine root;
E. stabilizing treatment, step comprises: adding ultrapure water to carry out acid-base neutralisation, and insulation 2 hours after being warming up to 50 ℃, is 8～9 and when remaining unchanged when recording pH value, be cooled to below 30 ℃, then washed twice
F. dehydrate, make the water content of PVB resin below 1.5%.
2. solar energy power generating as claimed in claim 1 PVB process for preparing resins is characterized in that:
In steps A, described ultrapure water is water white, obtains by 20 milliliters of 1000 ml water simmer down tos, and its pH value is 6.8-7.2, and the conductivity apparatus measuring resistance is more than 1,000,000 ohm;
Described butyraldehyde is no more than 7 days for distillation, and content is more than 95%;
Described hydrochloric acid is water white CP grade hydrochloric acid.
3. solar energy power generating as claimed in claim 1 PVB process for preparing resins is characterized in that:
In step D, described multiplicity is 20 times.
4. solar energy power generating as claimed in claim 1 PVB process for preparing resins is characterized in that:
In step e, the ultrapure water that each washing adds is 9: 1 with the weight ratio of the rear PVB resin of reaction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110443018.5A CN103172768B (en) | 2011-12-26 | 2011-12-26 | Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation |
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| CN201110443018.5A CN103172768B (en) | 2011-12-26 | 2011-12-26 | Method for manufacturing PVB (polyvinyl butyral) resin for solar energy photovoltaic power generation |
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| CN103172768A true CN103172768A (en) | 2013-06-26 |
| CN103172768B CN103172768B (en) | 2015-03-04 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671467A (en) * | 2009-10-12 | 2010-03-17 | 青岛昊成实业有限公司 | Photochromic resin used for safety glass and preparation method thereof |
| CN102044572A (en) * | 2009-10-21 | 2011-05-04 | 比亚迪股份有限公司 | Solar cell back panel, preparation method thereof and solar module |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671467A (en) * | 2009-10-12 | 2010-03-17 | 青岛昊成实业有限公司 | Photochromic resin used for safety glass and preparation method thereof |
| CN102044572A (en) * | 2009-10-21 | 2011-05-04 | 比亚迪股份有限公司 | Solar cell back panel, preparation method thereof and solar module |
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