CN101705064A - Environment friendly aldehyde-free odourless building glue - Google Patents
Environment friendly aldehyde-free odourless building glue Download PDFInfo
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- CN101705064A CN101705064A CN200910211167A CN200910211167A CN101705064A CN 101705064 A CN101705064 A CN 101705064A CN 200910211167 A CN200910211167 A CN 200910211167A CN 200910211167 A CN200910211167 A CN 200910211167A CN 101705064 A CN101705064 A CN 101705064A
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Abstract
The invention discloses an environmental friendly aldehyde-free odourless building glue which relates to a building glue. The building glue is prepared from 60%-80% of polyving akohol, 65%-80% of phosphoric acid, 2%-5% of urea, sodium hydroxide, 0.5%-1% of sodium polyacrylate, 0.1% of antiseptic and water up to 100%. The polyving akohol is esterified with the phosphoric acid under the catalysis of the urea for the first time, wherein the phosphoric acid is an inorganic polyprotic acid and can esterify with the hydroxyl of the polyving akohol, and the added urea can improve the freezing resistance and the storage performance of the glue. The building glue has no color or no odor, excellent transparent consistence, long storage time, no gelation at low temperature and strong adhesion stress; and the building glue can be used by mixing with white cement, double-flying powder, chalk powder and the like and has the advantages of easy construction, no powder falling or no skin curling.
Description
Technical field:
The present invention relates to a kind of building glue, especially relate to a kind of environment friendly aldehyde-free odourless building glue.
Background technology:
The building glue that existing building engineering and interior decoration are used mainly is polyvinylacetal glue (as 107,801 glue) and acrylic amide glue.The polyvinylacetal building glue mainly be polyvinyl alcohol under an acidic catalyst and formaldehyde (or oxalic dialdehyde) reaction form, be characterized in the bonding strength height, frost resistance is good, but glue aldehydes residual quantity height, irritating smell is big, has a strong impact on the physical and mental health of producing the user.Acrylic amide glue mainly is that to adopt polyvinyl alcohol and acrylamide be that main raw material carries out copolymerization and forms under the initiator effect, the glue of producing has water white transparency, have good workability, the cost performance height, but acrylamide is a toxic substance, long-term contact can cause various nervous system disorderss, as muscle numbness, atrophy, and can be carcinogenic when serious.
At above situation, many patents of invention have adopted materials such as starch, boric acid, water glass, Mierocrystalline cellulose to come polyvinyl alcohol is carried out modification, or eliminate the residual aldehydes in reaction back by all means.But how much come with some shortcomings, specifically of non-ideal use.
Summary of the invention:
The purpose of this invention is to provide a kind of environment friendly aldehyde-free odourless building glue, it can adopt polyvinyl alcohol is carried out dual esterification modification, reduces the wetting ability hydroxyl in the polyvinyl alcohol, thereby improves the water tolerance and the bonding force of glue.The material that participates in reaction in the production is nontoxic, tasteless, the clean aldehyde of environmental protection that does not have volatilization obnoxious flavour, a clear, colorless free from environmental pollution glue of distinguishing the flavor of only.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: it is to supply 100 by polyvinyl alcohol 60%-80%, phosphoric acid 6%-10%, urea 2%-5%, sodium hydroxide, sodium polyacrylate 0.5%-1%, sanitas 0.1% and water to be prepared from, in reactor or glue jar, add 600 kg of water, begin stirring heating then, be heated to 40-50 when spending, add 60 kilograms of polyvinyl alcohol, be warming up to 95-95 ℃, insulated and stirred half an hour, polyvinyl alcohol is dissolved fully; Second step cooled the temperature to about 90 ℃, adding 6 kilograms of phosphoric acid (analytical pure), stirred 5 minutes, added 5 kilograms of urea then, and stirring reaction is about 1 hour; The 3rd step added 100 kilograms in cold water, made reactor temperature be reduced to 60-70 ℃, slowly added 10% sodium hydroxide solution, and PH is transferred to 7-8; In the 4th step, add 100 kilograms of 1% sodium polyacrylate solution, insulation reaction 30-60 minute; The 5th step added the remaining water yield, supplied 1 xanthan water, cooled the temperature to below 40 degree, added 1 kilogram of sanitas, after stirring, and packing, discharging.
The present invention has following beneficial effect: adopt polyvinyl alcohol to carry out the esterification first time with phosphoric acid under the katalysis of urea, phosphoric acid is as a kind of inorganic multivariate acid, hydroxyl in energy and the polyvinyl alcohol carries out esterification, and the urea of Jia Ruing also can strengthen the frost resistance and the storage property of glue simultaneously; Colorless and odorless, transparent denseness is good, and storage time is long, and low temperature is gel not, and cohesive force is strong, can use with mixing such as white cement, dry powder, talcum powder, terra alba, easily construction, not shedding, not roll up skin.
Embodiment:
This embodiment is by the following technical solutions: supply 100 by polyvinyl alcohol 60%-80%, phosphoric acid 6%-10%, urea 2%-5%, sodium hydroxide, sodium polyacrylate 0.5%-1%, sanitas 0.1% and water and be prepared from.
In reactor or glue jar, add 600 kg of water, begin stirring heating then, be heated to 40-50 when spending, add 60 kilograms of polyvinyl alcohol, be warming up to 95-95 ℃, insulated and stirred half an hour, polyvinyl alcohol is dissolved fully.
Second step cooled the temperature to about 90 ℃, adding 6 kilograms of phosphoric acid (analytical pure), stirred 5 minutes, added 5 kilograms of urea then, and stirring reaction is about 1 hour.
The 3rd step added 100 kilograms in cold water, made reactor temperature be reduced to 60-70 ℃, slowly added 10% sodium hydroxide solution, and PH is transferred to 7-8.
In the 4th step, add 100 kilograms of 1% sodium polyacrylate solution, insulation reaction 30-60 minute.
The 5th step added the remaining water yield, supplied 1 xanthan water, cooled the temperature to below 40 degree, added 1 kilogram of sanitas, after stirring, and packing, discharging.
This embodiment adopts polyvinyl alcohol to carry out the esterification first time with phosphoric acid under the katalysis of urea, phosphoric acid is as a kind of inorganic multivariate acid, hydroxyl in energy and the polyvinyl alcohol carries out esterification, and the urea of Jia Ruing also can strengthen the frost resistance and the storage property of glue simultaneously; Colorless and odorless, transparent denseness is good, and storage time is long, and low temperature is gel not, and cohesive force is strong, can use with mixing such as white cement, dry powder, talcum powder, terra alba, easily construction, not shedding, not roll up skin.
Claims (1)
1. environment friendly aldehyde-free odourless building glue, it is characterized in that it is to supply 100 by polyvinyl alcohol 60%-80%, phosphoric acid 6%-10%, urea 2%-5%, sodium hydroxide, sodium polyacrylate 0.5%-1%, sanitas 0.1% and water to be prepared from, in reactor or glue jar, add 600 kg of water, begin stirring heating then, be heated to 40-50 when spending, add 60 kilograms of polyvinyl alcohol, be warming up to 95-95 ℃, insulated and stirred half an hour, polyvinyl alcohol dissolved fully; Second step cooled the temperature to about 90 ℃, adding 6 kilograms of phosphoric acid (analytical pure), stirred 5 minutes, added 5 kilograms of urea then, and stirring reaction is about 1 hour; The 3rd step added 100 kilograms in cold water, made reactor temperature be reduced to 60-70 ℃, slowly added 10% sodium hydroxide solution, and PH is transferred to 7-8; In the 4th step, add 100 kilograms of 1% sodium polyacrylate solution, insulation reaction 30-60 minute; The 5th step added the remaining water yield, supplied 1 xanthan water, cooled the temperature to below 40 degree, added 1 kilogram of sanitas, after stirring, and packing, discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910211167A CN101705064A (en) | 2009-11-06 | 2009-11-06 | Environment friendly aldehyde-free odourless building glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910211167A CN101705064A (en) | 2009-11-06 | 2009-11-06 | Environment friendly aldehyde-free odourless building glue |
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| Publication Number | Publication Date |
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| CN101705064A true CN101705064A (en) | 2010-05-12 |
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| CN200910211167A Pending CN101705064A (en) | 2009-11-06 | 2009-11-06 | Environment friendly aldehyde-free odourless building glue |
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| CN (1) | CN101705064A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786897A (en) * | 2012-08-03 | 2012-11-21 | 祁高标 | High-standard formaldehyde-free glue and preparation method thereof |
| CN109796914A (en) * | 2018-12-13 | 2019-05-24 | 科顺防水科技股份有限公司 | A kind of concrete interface treating agent and preparation method thereof |
| CN110591566A (en) * | 2019-10-11 | 2019-12-20 | 福建农林大学 | Graphene oxide modified aluminum phosphate adhesive for artificial board and preparation method thereof |
| CN110669441A (en) * | 2019-10-11 | 2020-01-10 | 福建农林大学 | Preparation method of PVA-phosphorus-aluminum adhesive for artificial board |
| CN112341957A (en) * | 2020-10-21 | 2021-02-09 | 齐皓宇 | Metal complex type high-strength polyvinyl alcohol glue and preparation method thereof |
-
2009
- 2009-11-06 CN CN200910211167A patent/CN101705064A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786897A (en) * | 2012-08-03 | 2012-11-21 | 祁高标 | High-standard formaldehyde-free glue and preparation method thereof |
| CN102786897B (en) * | 2012-08-03 | 2015-09-30 | 祁高标 | High-standard formaldehyde-free glue and preparation method thereof |
| CN109796914A (en) * | 2018-12-13 | 2019-05-24 | 科顺防水科技股份有限公司 | A kind of concrete interface treating agent and preparation method thereof |
| CN110591566A (en) * | 2019-10-11 | 2019-12-20 | 福建农林大学 | Graphene oxide modified aluminum phosphate adhesive for artificial board and preparation method thereof |
| CN110669441A (en) * | 2019-10-11 | 2020-01-10 | 福建农林大学 | Preparation method of PVA-phosphorus-aluminum adhesive for artificial board |
| CN112341957A (en) * | 2020-10-21 | 2021-02-09 | 齐皓宇 | Metal complex type high-strength polyvinyl alcohol glue and preparation method thereof |
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Open date: 20100512 |