CN103172768B - 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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- CN103172768B CN103172768B CN201110443018.5A CN201110443018A CN103172768B CN 103172768 B CN103172768 B CN 103172768B CN 201110443018 A CN201110443018 A CN 201110443018A CN 103172768 B CN103172768 B CN 103172768B
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- ultrapure water
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- hydrochloric acid
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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 resin preparation method.
Background technology
The laminate structure of traditional solar energy power generating plate as shown in Figure 1, is made up of sheet glass 1, EVA film 2, solar silicon wafers 3, EVA film 2 and back cover PTP hardboard 4 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 is (20 DEG C, 24h)≤0.1%; Degree of crosslinking >=85%; Stripping strength >=15N/cm; Resistance to UV aging (UV irradiates 1000h, 83 DEG C): yellowness index Δ YI≤1; Heat aging property (1000h, 85 DEG C): yellowness index Δ YI≤2; Wet and heat ageing resistant performance (1000h, RH90%, 85 DEG C): yellowness 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, high temperature resistant and winter hardiness is poor, and stripping strength is also poor.In addition, the EVA material of current domestic use mostly is imported materials and items, expensive, causes power generation plate cost higher.
Summary of the invention
For the above-mentioned shortcoming existed in prior art, the object of this invention is to provide a kind of solar energy power generating PVB resin preparation method, to obtain, there is 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 PVB resin preparation method comprises following concrete steps:
A. preparation of raw material, wherein, raw material comprises the PVA of 1400 polymerization degree, ultrapure water, butyraldehyde and hydrochloric acid;
B. feed intake, step comprises: added by PVA in ultrapure water and carry out 95 DEG C of insulation dissolvings 4 hours, and solids content is surveyed in forced filtration sampling, makes the weight ratio of PVA and ultrapure water maintain 100: 1500 all the time; Filter is finished maintenance 80 DEG C and is added full dose butyraldehyde and cooling after being incubated 30 minutes; When liquid temperature is 10 DEG C, add with the diluted full dose hydrochloric acid of ultrapure water three times; And the weight ratio of whole feed intake PVA in process 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 DEG C ~ 25 DEG C heat up 1.5 hours; 25 DEG C are incubated 1 hour; 25 DEG C ~ 45 DEG C heat up 2.5 hours; 45 DEG C ~ 50 DEG C heat up 1 hour; 50 DEG C are incubated 1 hour; Be cooled to less than 30 DEG C;
D. wash, step comprises: add ultrapure water and carry out stirring and drain after 30 minutes, and repeatedly, until PVB resin detect no acidic, without chlorine root;
E. stabilizing treatment, step comprises: add ultrapure water and carry out acid-base neutralisation, and is incubated 2 hours after being warming up to 50 DEG C, when recording pH value and being 8 ~ 9 and remaining unchanged, is cooled to less than 30 DEG C, then washes twice
F. dehydrate, make the water content of PVB resin below 1.5%.
In step, described ultrapure water is water white, and obtained by 1000 ml water simmer down to 20 milliliters, its pH value is 6.8-7.2, conductivity apparatus measuring resistance more than 1,000,000 ohm;
Described butyraldehyde is that distillation is no more than 7 days, 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, wash the ultrapure water added is 9: 1 with the weight ratio of the rear PVB resin of reaction at every turn.
In technique scheme, solar energy power generating PVB resin preparation method of the present invention comprises preparation of raw material, feeds intake, reacts temperature control, washing, stabilizing treatment and dehydrate six large steps, the present invention take PVA as raw material, prepared PVB resin, can be used for the doubling film making solar energy power generating plate, to substitute original EVA film, greatly can improve the transparency of power generation plate, high temperature resistant winter hardiness, and extend its work-ing life.
Accompanying drawing explanation
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 resin preparation method of the present invention.
Embodiment
Technical scheme of the present invention is further illustrated below in conjunction with drawings and Examples.
Refer to shown in Fig. 2, solar energy power generating PVB resin preparation method of the present invention (PVB is polyvinyl butyral acetal), mainly comprise preparation of raw material, feed intake, react temperature control, washing, stabilizing treatment and dehydrate six large steps, wherein:
In 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, obtained by 1000 ml water simmer down to 20 milliliters, its pH value is 6.8-7.2, conductivity apparatus measuring resistance more than 1,000,000 ohm; Described butyraldehyde requires to be no more than 7 days for distillation, 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 added in ultrapure water by above-mentioned PVA and carry out 95 DEG C of insulation dissolvings 4 hours, and solids content is surveyed in forced filtration sampling, makes the weight ratio of PVA and ultrapure water maintain 100: 1500 all the time; Filter keeps 80 DEG C to add full dose butyraldehyde after finishing and cooling after being incubated 30 minutes; Then, when liquid temperature is 10 DEG C, add with the diluted full dose hydrochloric acid of ultrapure water three times; And be 100: 1500: 60: 30 in the weight ratio of whole feed intake PVA in process and ultrapure water, butyraldehyde, hydrochloric acid.
In reaction temperature control, its key step comprises: former temperature insulation 1 hour after hydrochloric acid finishes; Then carry out 15 DEG C ~ 25 DEG C successively to heat up 1.5 hours; 25 DEG C are incubated 1 hour; 25 DEG C ~ 45 DEG C heat up 2.5 hours; 45 DEG C ~ 50 DEG C heat up 1 hour; 50 DEG C are incubated 1 hour; Finally, be cooled to less than 30 DEG C and carry out washing step;
In washing process, its key step comprises: add ultrapure water and carry out stirring and drain after 30 minutes, and repeatedly (preferably as 20 times), until PVB resin detect no acidic, without chlorine root, enter stabilizing treatment step; Wherein, wash the ultrapure water added is 9: 1 with the weight ratio of the rear PVB resin of reaction at every turn.
In stabilizing treatment process, its key step comprises: add ultrapure water and carry out acid-base neutralisation, and is incubated 2 hours after being warming up to 50 DEG C, when recording pH value and being 8 ~ 9 and remaining unchanged, is cooled to less than 30 DEG C, then washes twice.
F. dehydrate, make the water content control of PVB resin below 1.5%, can pack with every bag of 500KG, the making for photovoltaic generation PVB doubling film is for subsequent use.
It should be noted that at this, PVB resin common is at present mainly used for manufacturing aviation splinter-proof glass, flooring-safe glass and building safety glass etc., and its proportioning and preparation method are different from the present invention.Preparation-obtained PVB resin of the present invention is white powder thing, it is the photovoltaic generation PVB doubling film being exclusively used in manufacture, PVB doubling film made by it has splendid light transmission, water white transparency, sandwiched multilayer between glass, its light transmission more than 98%, and can also have stronger caking ability with silex glass, after glass breaking, sea is not from film body, adhesive power>=70kg/cm
2, high temperature resistantly reach 200 DEG C, cold-resistantly can reach-60 DEG C, meet the use in each place, the whole nation completely, and 30 years can be reached work-ing life.Therefore, adopt PVB doubling film to carry out alternative EVA film, can make that power generation plate is transparency, high temperature resistant cold tolerance or all have work-ing life significantly improves, not only increase product performance, and also reduce cost.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.
Claims (4)
1. a solar energy power generating PVB resin preparation method, is characterized in that,
Comprise following concrete steps:
A. preparation of raw material, wherein, raw material comprises the PVA of 1400 polymerization degree, ultrapure water, butyraldehyde and hydrochloric acid;
B. feed intake, step comprises: added by PVA in ultrapure water and carry out 95 DEG C of insulation dissolvings 4 hours, and solids content is surveyed in forced filtration sampling, makes the weight ratio of PVA and ultrapure water maintain 100: 1500 all the time; Filter is finished maintenance 80 DEG C and is added full dose butyraldehyde and cooling after being incubated 30 minutes; When liquid temperature is 10 DEG C, add with the diluted full dose hydrochloric acid of ultrapure water three times; And the weight ratio of whole feed intake PVA in process 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 DEG C ~ 25 DEG C heat up 1.5 hours; 25 DEG C are incubated 1 hour; 25 DEG C ~ 45 DEG C heat up 2.5 hours; 45 DEG C ~ 50 DEG C heat up 1 hour; 50 DEG C are incubated 1 hour; Be cooled to less than 30 DEG C;
D. wash, step comprises: add ultrapure water and carry out stirring and drain after 30 minutes, and repeatedly, until PVB resin detect no acidic, without chlorine root;
E. stabilizing treatment, step comprises: add ultrapure water and carry out acid-base neutralisation, and is incubated 2 hours after being warming up to 50 DEG C, when recording pH value and being 8 ~ 9 and remaining unchanged, is cooled to less than 30 DEG C, then washes twice
F. dehydrate, make the water content of PVB resin below 1.5%.
2. solar energy power generating PVB resin preparation method as claimed in claim 1, is characterized in that:
In step, described ultrapure water is water white, and obtained by 1000 ml water simmer down to 20 milliliters, its pH value is 6.8-7.2, conductivity apparatus measuring resistance more than 1,000,000 ohm;
Described butyraldehyde is that distillation is no more than 7 days, and content is more than 95%;
Described hydrochloric acid is water white CP grade hydrochloric acid.
3. solar energy power generating PVB resin preparation method as claimed in claim 1, is characterized in that:
In step D, described multiplicity is 20 times.
4. solar energy power generating PVB resin preparation method as claimed in claim 1, is characterized in that:
In step e, wash the ultrapure water added is 9: 1 with the weight ratio of the rear PVB resin of reaction at every turn.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN103172768A CN103172768A (en) | 2013-06-26 |
| CN103172768B true 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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