CN101747851A - Production method of formaldehyde-free glue - Google Patents
Production method of formaldehyde-free glue Download PDFInfo
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- CN101747851A CN101747851A CN200810203825A CN200810203825A CN101747851A CN 101747851 A CN101747851 A CN 101747851A CN 200810203825 A CN200810203825 A CN 200810203825A CN 200810203825 A CN200810203825 A CN 200810203825A CN 101747851 A CN101747851 A CN 101747851A
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Abstract
The invention discloses a production method of formaldehyde-free glue. In the method, polyvinyl alcohol and acrylamide are used as main raw materials, ammonium persulfate and sodium bisulfite are used as initiators, and then the formaldehyde-free glue is prepared via polymerization reaction. The production method is operated simply, and the produced non-formaldehyde glue is nonpoisonous and tasteless, has good adhesive property, and can be stored for a long time.
Description
Technical field
The present invention relates to a kind of glue, relate in particular to a kind of production method of formaldehyde-free glue.
Background technology
Formaldehyde is a kind of colourless easily molten irritant gas, can absorb through respiratory tract, and its aqueous solution " formalin " can absorb through digestive tube.Modern scientific research shows that formaldehyde has negative impact to HUMAN HEALTH.Long-term contact low dosage formaldehyde can cause chronic respiratory tract disease, women's menoxenia, pregnancy syndrome, causes that newborn infant's physique reduces, chromosome abnormalty, even causes nasopharyngeal carcinoma.The formaldehyde of high density is all toxic to neural system, immunity system, liver etc.But it also exciting eye conjunctiva, respiratory mucosa and producing shed tears, runny nose, cause conjunctivitis, pharyngolaryngitis, asthma, bronchitis and allergic disorder.Formaldehyde also has teratogenesis, carcinogenesis.According to epidemiology survey, contact the people of formaldehyde for a long time, can cause nasal cavity, oral cavity, nasopharynx, throat, skin and gastral cancer.
The main source of indoor formaldehyde is the formaldehyde that contains in the used glue in the employed tackiness agent of sheet material and the furniture in the upholstery.Glue is industry raw material commonly used, but contains formaldehyde in its manufacturing raw material more.As 107 traditional glue, utilize polyvinyl alcohol and formaldehyde generation condensation reaction to produce.Formaldehyde has the strong impulse smell in the production, and is poisonous and certain inflammable and explosive property arranged, and its finished product exists because of free formaldehyde is arranged, so production and workmen healthy had very big harm.Simultaneously, the formaldehyde that contains in the building glue can aggravate to pollute, bring sharp aroma, its release period to be generally 3 to 15 years, to harm tool chronicity, latent and the disguise of human body.Thereby the glue that contains formaldehyde can bring bigger pollution to environment.As being used for glue such as 801,901 of construction work in a large number, contain the formaldehyde composition of 35%-40% approximately, well imagine that these glue are used for engineerings such as interior decoration, can produce which kind of harm to HUMAN HEALTH.Therefore, the development of the glue that do not contain formaldehyde is more and more drawn attention, industry also is devoted to seek the approaching formaldehyde-free glue of a kind of function and is replaced the widely used glue that contains formaldehyde at present, makes the pollution that is used for reducing environment to reduce formaldehyde.
Summary of the invention
In order to reach above purpose, the invention provides a kind of production method of formaldehyde-free glue, its technical scheme is: a kind of production method of formaldehyde-free glue, described method is carried out according to the following steps:
(1) water of adding 900-1100 weight part in reactor;
(2) polyvinyl alcohol of adding 12-18 weight part stirs rising temperature for dissolving, until no particle;
(3) be cooled to 30-40 ℃, add the acrylamide of 100-140 weight part, be warming up to 68-70 ℃ again;
(4) add the ammonium persulphate of 1-1.5 weight part and the sodium bisulfite of 0.05-0.15 weight part, polymerization reaction take place stops heating;
(5) treat that polyreaction took place after 10-15 minute, the ammonium persulphate with the 1-1.5 weight part adds in the reactor again;
(6) polyreaction continues to take place, and viscosity reaches 7950-8050S, discharging in the time of 82-88 ℃.
Be preferably, dilute with water was 20 times before described ammonium persulphate added.
Be preferably, dilute with water was 10 times before described sodium bisulfite added.
Be preferably, after the described polyreaction of step (4) took place, temperature rose to 90-92 ℃. because the polyreaction heat release, the material in the reactor can heat up, and temperature is raised to 90-92 ℃ approximately, so the time should stop heating.
Above-mentioned ammonium persulphate and sodium bisulfite are the initiator in the polymerization process of the present invention.
The invention has the beneficial effects as follows:
1, production process does not adopt formaldehyde, and the glue of producing is formaldehydeless, nontoxic, tasteless, the non-volatility obnoxious flavour;
2, it is simple to boil operation, and the disposable complete reaction of finishing does not produce solidification phenomenon even the glue of producing is put for a long time at winter and summer yet;
3, strong, easily construction, the not shedding of viscosity height, cohesive force, do not roll up skin;
4, condition of storage, long (more than a year), good film-forming property of storage time;
5, this glue can be used as the base-material of producing emulsion paint;
6, reduce cost, same solid content performance improves 20%.
Embodiment
Embodiment 1
Earlier the water of 1000 weight parts is knocked down reactor, the polyvinyl alcohol that adds 15 weight parts again stirred rising temperature for dissolving 2 hours, until there not being particle; Be cooled to 30～40 ℃, add the acrylamide of 120 weight parts, be warming up to 68～70 ℃.20 times of the ammonium persulphate dilute with waters of 2 weight parts, drop into 50% earlier again, then the sodium bisulfite of 0.1 weight part is added in the reactor with 10 times of water dilution backs.At this moment stop to heat, because this moment, the polymerization exotherm temperature can be raised to 90～92 ℃ automatically.Polyreaction 10 minutes drops into reactor to 50% ammonium persulphate of remainder again, and polymerization 20 minutes treats that viscosity reaches 8000S, discharging in the time of 85 ℃.
Embodiment 2
Earlier the water of 900 weight parts is knocked down reactor, add the polyvinyl alcohol of 13 weight parts again, stirred rising temperature for dissolving 2 hours, until there not being particle; Be cooled to 30～40 ℃, add the acrylamide of 140 weight parts, be warming up to 68～70 ℃.20 times of the ammonium persulphate dilute with waters of 1.5 weight parts, drop into 50% earlier again, then the sodium bisulfite of 0.05 weight part is added in the reactor with 10 times of water dilution backs.At this moment stop to heat, because this moment, the polymerization exotherm temperature can be raised to 90～92 ℃ automatically.Polyreaction 10-12 minute, again 50% ammonium persulphate of remainder is dropped into reactor, polymerization 20 minutes treats that viscosity reaches 7950S, discharging in the time of 82-85 ℃.
Embodiment 3
Earlier the water of 1100 weight parts is knocked down reactor, add the polyvinyl alcohol of 118 weight parts again, stirred rising temperature for dissolving 2 hours, until there not being particle; Be cooled to 30～40 ℃, add the acrylamide of 120 weight parts, be warming up to 68～70 ℃.20 times of the ammonium persulphate dilute with waters of 3 weight parts, drop into 50% earlier again, then the sodium bisulfite of 0.15 weight part is added in the reactor with 10 times of water dilution backs.At this moment stop to heat, because this moment, the polymerization exotherm temperature can be raised to 90～92 ℃ automatically.Polyreaction 12-15 minute, again 50% ammonium persulphate of remainder is dropped into reactor, polymerization 20 minutes treats that viscosity reaches 8050S, discharging in the time of 85-88 ℃.
Production method of the present invention is simple to operate, can disposablely finish reaction, the glue of producing does not contain formaldehyde, nonpoisonous and tasteless and adhesive property good, be easy to construction, the storage time is longer, its performance and commonly used building glue as 801,901,107 glue near in addition be better than these traditional glue, can be used as tradition and contain effective substitute of formaldehyde building glue, is a kind of glue of real environmental protection.
Claims (4)
1. the production method of a formaldehyde-free glue is characterized in that, described method is carried out according to the following steps:
(1) water of adding 900-1100 weight part in reactor;
(2) polyvinyl alcohol of adding 12-18 weight part stirs rising temperature for dissolving, until no particle;
(3) be cooled to 30-40 ℃, add the acrylamide of 100-140 weight part, be warming up to 68-70 ℃ again;
(4) add the ammonium persulphate of 1-1.5 weight part and the sodium bisulfite of 0.05-0.15 weight part, polymerization reaction take place stops heating;
(5) treat that polyreaction took place after 10-15 minute, the ammonium persulphate with the 1-1.5 weight part adds in the reactor again;
(6) polyreaction continues to take place, and viscosity reaches 7950-8050S, discharging in the time of 82-88 ℃.
2. the production method of formaldehyde-free glue according to claim 1 is characterized in that, dilute with water was 20 times before described ammonium persulphate added.
3. the production method of formaldehyde-free glue according to claim 1 is characterized in that, dilute with water was 10 times before described sodium bisulfite added.
4. the production method of formaldehyde-free glue according to claim 1 is characterized in that, after the described polyreaction of step (4) took place, temperature rose to 90-92 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810203825A CN101747851A (en) | 2008-12-02 | 2008-12-02 | Production method of formaldehyde-free glue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810203825A CN101747851A (en) | 2008-12-02 | 2008-12-02 | Production method of formaldehyde-free glue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101747851A true CN101747851A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810203825A Pending CN101747851A (en) | 2008-12-02 | 2008-12-02 | Production method of formaldehyde-free glue |
Country Status (1)
| Country | Link |
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| CN (1) | CN101747851A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436191A (en) * | 2013-09-05 | 2013-12-11 | 叶伟然 | Improved textile adhesive |
| CN103627332A (en) * | 2013-11-21 | 2014-03-12 | 湖州申祥丝织有限责任公司 | Novel fabric adhesive |
| CN107384270A (en) * | 2017-08-24 | 2017-11-24 | 合肥翠鸟节能建材有限公司 | A kind of novel environment friendly binding material |
-
2008
- 2008-12-02 CN CN200810203825A patent/CN101747851A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436191A (en) * | 2013-09-05 | 2013-12-11 | 叶伟然 | Improved textile adhesive |
| CN103627332A (en) * | 2013-11-21 | 2014-03-12 | 湖州申祥丝织有限责任公司 | Novel fabric adhesive |
| CN107384270A (en) * | 2017-08-24 | 2017-11-24 | 合肥翠鸟节能建材有限公司 | A kind of novel environment friendly binding material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |