CN103725236A - Polystyrene foam and preparation method thereof - Google Patents
Polystyrene foam and preparation method thereof Download PDFInfo
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- CN103725236A CN103725236A CN201410010966.3A CN201410010966A CN103725236A CN 103725236 A CN103725236 A CN 103725236A CN 201410010966 A CN201410010966 A CN 201410010966A CN 103725236 A CN103725236 A CN 103725236A
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Abstract
The invention relates to the field of plastics and in particular relates to polystyrene foam and a preparation method thereof. The polystyrene foam comprises the following raw materials in parts by weight: 500-700 parts of formaldehyde, 200-350 parts of urea, 10-20 parts of melamine and 2-4.5 parts of hexamethylenetetramine. According to the polystyrene foam provided in the invention, the formaldehyde content in the polystyrene foam is reduced, and carcinogenic hazard and environmental pollution are avoided.
Description
Technical field
The present invention relates to glue class field, in particular to foamed glue and preparation method thereof.
Background technology
In Application Areass such as building, sheet material, core, warming plates, cohesiveness tackify glue is widely used, and in correlation technique, urea-formaldehyde glue application is more.
Urea-formaldehyde glue be urea and formaldehyde under catalyzer (basic catalyst or an acidic catalyst) effect, polycondensation becomes initial stage urea-formaldehyde resin, and then under solidifying agent or promoter effect, forms molten, insoluble resin adhesive in latter stage.Because more formaldehyde is contained in the inside of urea-formaldehyde glue, and formaldehyde is carcinogens, and off-odour is larger, therefore, need to find the substitute of urea-formaldehyde glue to adapt to the trend requirement of health, environmental protection.
Summary of the invention
The object of the present invention is to provide a kind of foamed glue and preparation method thereof, to solve the above problems.
The embodiment of the present invention provides a kind of foamed glue, and its raw material comprises: in parts by weight, and 500-700 part formaldehyde, 200-350 part urea, 10-20 part trimeric cyanamide, 2-4.5 part vulkacit H.
In certain embodiments, be preferably, its raw material also comprises: in parts by weight, and 3-5.5 part polyvinyl alcohol, 3-5.5 part tackify glue.
In certain embodiments, be preferably, described tackify glue comprises: gelatine and/or loose glue.
In certain embodiments, be preferably, its raw material also comprises: in parts by weight, and the silicone based water-resisting agent of 3-5 part.
In certain embodiments, be preferably, its raw material also comprises: in parts by weight, and 1-2 part sodium lauryl sulphate.
The embodiment of the present invention also provides the preparation method of foamed glue in a kind of the various embodiments described above, comprising:
Take the raw material of described foamed glue, described raw material comprises: formaldehyde, urea, trimeric cyanamide, vulkacit H;
By urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % in 60-65 ℃ of reactor, mix, thermopositive reaction;
Until the temperature in described reactor, rise to after 80-85 ℃, to adding urea described in 30 quality % in described reactor;
Until the temperature in described reactor, rise to after 85-90 ℃, in described reactor, add sodium hydroxide, cooling;
Until the temperature in described reactor, be down to after 60-70 ℃, in described reactor, add 10 quality % urea;
After the temperature in described reactor is down to below 30 ℃, discharging.
In certain embodiments, be preferably, described raw material also comprises: polyvinyl alcohol, tackify glue; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described polyvinyl alcohol, tackify glue are placed in to 60 ℃ of reactors, mix.
In certain embodiments, be preferably, described raw material also comprises: silicone based water-resisting agent; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described silicone based water-resisting agent is placed in to 60 ℃ of reactors, mixes.
In certain embodiments, be preferably, described raw material also comprises: sodium lauryl sulphate; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described sodium lauryl sulphate is placed in to 60 ℃ of reactors, mixes.
In certain embodiments, be preferably, adding after sodium hydroxide in described reactor, the pH value of the material in described reactor is 8.
The foamed glue providing in an embodiment of the present invention, its raw material comprises: formaldehyde, urea, vulkacit H, trimeric cyanamide, vulkacit H equal facile hydrolysis, in hydrolytic process, initial hydrating solution is alkalescence, promotes formaldehyde and urea reaction tackify; Owing to being hydrolyzed to thermopositive reaction, along with the rising of temperature, the pH value of solution reduces, and gradually becomes acid, and trimeric cyanamide is 6 functionality, it is active that amino whole hydrogen atoms all show, each melamine molecule can react with 6 formaldehyde molecules, and trimeric cyanamide and formaldehyde can react under sour environment, decomposing formaldehyde, reduce the formaldehyde content in foamed glue, avoid causing carcinogenic harm and environmental pollution.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
One embodiment of the invention provides a kind of foamed glue, and its raw material comprises: in parts by weight, and 500-700 part formaldehyde, 200-350 part urea, 10-20 part trimeric cyanamide, 2-4.5 part vulkacit H.
One embodiment of the invention also provides a kind of preparation method of foamed glue, comprising:
The raw material that takes foamed glue, raw material comprises: formaldehyde, urea, trimeric cyanamide, vulkacit H;
By formaldehyde, 60 quality % urea, trimeric cyanamide, vulkacit H in 60 ℃ of reactors, mix, thermopositive reaction;
Temperature in question response still rises to after 80 ℃, in reactor, adds 30 quality % urea;
Temperature in question response still rises to after 90 ℃, in reactor, adds sodium hydroxide, cooling;
Temperature in question response still is down to after 70 ℃, in reactor, adds 10 quality % urea;
Temperature in question response still is down to after 30 ℃, discharging.
The equal facile hydrolysis of vulkacit H, in hydrolytic process, initial hydrating solution is alkalescence, promotes formaldehyde and urea reaction tackify; Owing to being hydrolyzed to thermopositive reaction, along with the rising of temperature, the pH value of solution reduces, and gradually becomes acid, and trimeric cyanamide is 6 functionality, it is active that amino whole hydrogen atoms all show, each melamine molecule can react with 6 formaldehyde molecules, and trimeric cyanamide and formaldehyde can react under sour environment, decomposing formaldehyde, reduce the formaldehyde content in foamed glue, avoid causing carcinogenic harm and environmental pollution.
Next, the present invention will be to this foamed glue, and the preparation method of foamed glue is described in detail:
This foamed glue improves mainly for the shortcoming of existing urea-formaldehyde glue, is specially:
First the raw material of this foamed glue comprises: in parts by weight, and 500-700 part formaldehyde, 200-350 part urea, 10-20 part trimeric cyanamide, 2-4.5 part vulkacit H.Comprising as above the foamed glue of raw material, to have solved original urea-formaldehyde glue formaldehyde content large, has carinogenicity, the problem that pungency taste is large.The equal facile hydrolysis of vulkacit H, in hydrolytic process, initial hydrating solution is alkalescence, promotes formaldehyde and urea reaction tackify, owing to being hydrolyzed to thermopositive reaction, along with the rising of temperature, the pH value of solution reduces, gradually become acid, trimeric cyanamide is 6 functionality, it is active that amino whole hydrogen atoms all show, each melamine molecule can react with 6 formaldehyde molecules, can under acidic conditions, there is condensation reaction in trimeric cyanamide and formaldehyde, reaction first obtains the performed polymer of solubility by controlling monomer composition and level of response, it is the trishydroxymethyl compound of trimeric cyanamide, by vulkacit H, be hydrolyzed the pH that controls solution at 8-9, make prepolymer stable, under hot effect, obtain the crosslinking polymerization product that methylol dehydrating condensation forms, also improve the viscosity of foamed glue simultaneously.Reaction equation is:
The formaldehyde content of foamed glue and urea-formaldehyde glue under different embodiment, stimulation taste are compared:
Table 1
Preparation method is:
Take the raw material of foamed glue;
By raw material, wherein urea is got 60 quality %, mixing, thermopositive reaction in 60 ℃ of reactors;
Temperature in question response still rises to after 80 ℃, in reactor, adds 30 quality % urea;
Temperature in question response still rises to after 90 ℃, in reactor, adds sodium hydroxide, and pH value is adjusted to 8, cooling;
Temperature in question response still is down to after 70 ℃, in reactor, adds 10 quality % urea;
Temperature in question response still is down to after 30 ℃, discharging.
In certain embodiments, the raw material of foamed glue also comprises: in parts by weight, and 3-5.5 part polyvinyl alcohol, 3-5.5 part tackify glue.Because polyvinyl alcohol possesses acid and alkali-resistance, performance that stability is high, raw material adds this composition and can improve weathering resistance, the wear resistance of foamed glue.And tackify glue can be selected in gelatine, loose glue, and gelatine, loose glue all possess good wear resistance, weathering resistance is added quality guaranteed period, the weathering resistance that in foamed glue, can improve on the whole foamed glue to, and these performance extreme differences of urea-formaldehyde glue.
Foamed glue and urea-formaldehyde glue under different embodiment are compared:
Table 2
Preparation method is:
Take the raw material of foamed glue,
By raw material, wherein urea is got 60 quality %, mixing, thermopositive reaction in 65 ℃ of reactors;
Temperature in question response still rises to after 83 ℃, in reactor, adds 30 quality % urea;
Temperature in question response still rises to after 85 ℃, in reactor, adds sodium hydroxide, and pH value is adjusted to 8, cooling;
Temperature in question response still is down to after 65 ℃, in reactor, adds 10 quality % urea;
Temperature in question response still is down to after 20 ℃, discharging.
In certain embodiments, this foamed glue also comprises: in parts by weight, and the silicone based water-resisting agent of 3-5 part.Silicone based water-resisting agent is mixed in the raw material of foamed glue, can improve the waterproof effect of foamed glue, and has expanded Application Areas, the applied environment of foamed glue.
Foamed glue and urea-formaldehyde glue under different embodiment are compared:
Table 3
Preparation method is:
Take the raw material of foamed glue;
By raw material, wherein urea is got 60 quality %, mixing, thermopositive reaction in 65 ℃ of reactors;
Temperature in question response still rises to after 85 ℃, in reactor, adds 30 quality % urea;
Temperature in question response still rises to after 87 ℃, in reactor, adds sodium hydroxide, and pH value is adjusted to 8, cooling;
Temperature in question response still is down to after 65 ℃, in reactor, adds 10 quality % urea;
Temperature in question response still is down to after 10 ℃, discharging.
In certain embodiments, this foamed glue also comprises: in parts by weight, and 1-2 part sodium lauryl sulphate.Sodium lauryl sulphate is mixed in the raw material of foamed glue, can improve the promoting agent of the foaming of foamed glue, promotes gas release.
Foamed glue and urea-formaldehyde glue under different embodiment are compared:
Table 4
Preparation method is:
Take the raw material of foamed glue;
By raw material, wherein urea is got 60 quality %, mixing, thermopositive reaction in 60 ℃ of reactors;
Temperature in question response still rises to after 83 ℃, in reactor, adds 30 quality % urea;
Temperature in question response still rises to after 85 ℃, in reactor, adds sodium hydroxide, and pH value is adjusted to 8, cooling;
Temperature in question response still is down to after 68 ℃, in reactor, adds 10 quality % urea;
Temperature in question response still is down to after 30 ℃, discharging.
Whipping agent of the present invention possesses following advantage:
1. because formaldehyde content is little, the Odor stimulation distributing is little, can be widely used;
2. possess waterproof effect, expanded environment for use;
3. the quality guaranteed period extends, and good weatherability, has also expanded environment for use and work-ing life;
4. intensity, elasticity, toughness all increase compared with currently available products;
5. difficult combustion.
Foamed glue provided by the invention can be widely used in: external wall insulation, door panel, color steel, with the product of the Material cladding such as (diatomite, leech ash, gypsum) at the bottom of various inorganic materials (perlite, vermiculite, volcanic cinder etc.), light powder.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a foamed glue, is characterized in that, its raw material comprises: in parts by weight, and 500-700 part formaldehyde, 200-350 part urea, 10-20 part trimeric cyanamide, 2-4.5 part vulkacit H.
2. foamed glue according to claim 1, is characterized in that, its raw material also comprises: in parts by weight, and 3-5.5 part polyvinyl alcohol, 3-5.5 part tackify glue.
3. foamed glue according to claim 2, is characterized in that, described tackify glue comprises: gelatine and/or loose glue.
4. according to the foamed glue described in claim 1-3 any one, it is characterized in that, its raw material also comprises: in parts by weight, and the silicone based water-resisting agent of 3-5 part.
5. according to the foamed glue described in claim 1-3 any one, it is characterized in that, its raw material also comprises: in parts by weight, and 1-2 part sodium lauryl sulphate.
6. a preparation method for the foamed glue described in claim 1-5 any one, is characterized in that, comprising:
Take the raw material of described foamed glue, described raw material comprises: formaldehyde, urea, trimeric cyanamide, vulkacit H;
By urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % in 60-65 ℃ of reactor, mix, thermopositive reaction;
Until the temperature in described reactor, rise to after 80-85 ℃, to adding urea described in 30 quality % in described reactor;
Until the temperature in described reactor, rise to after 85-90 ℃, in described reactor, add sodium hydroxide, cooling;
Until the temperature in described reactor, be down to after 60-70 ℃, in described reactor, add 10 quality % urea;
After the temperature in described reactor is down to below 30 ℃, discharging.
7. the preparation method of foamed glue according to claim 6, is characterized in that,
Described raw material also comprises: polyvinyl alcohol, tackify glue; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described polyvinyl alcohol, tackify glue are placed in to 60 ℃ of reactors, mix.
8. the preparation method of foamed glue according to claim 6, is characterized in that,
Described raw material also comprises: silicone based water-resisting agent; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described silicone based water-resisting agent is placed in to 60 ℃ of reactors, mixes.
9. the preparation method of foamed glue according to claim 6, is characterized in that,
Described raw material also comprises: sodium lauryl sulphate; ,
Urea, described trimeric cyanamide, described vulkacit H described in described formaldehyde, 60 quality % are mixed and also comprised in 60 ℃ of reactors: described sodium lauryl sulphate is placed in to 60 ℃ of reactors, mixes.
10. according to the preparation method of the foamed glue described in claim 6-7 any one, it is characterized in that,
Adding after sodium hydroxide in described reactor, the pH value of the material in described reactor is 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010966.3A CN103725236B (en) | 2013-12-09 | 2014-01-08 | Foamed glue and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310667404.1 | 2013-12-09 | ||
| CN201310667404 | 2013-12-09 | ||
| CN2013106674041 | 2013-12-09 | ||
| CN201410010966.3A CN103725236B (en) | 2013-12-09 | 2014-01-08 | Foamed glue and preparation method thereof |
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| Publication Number | Publication Date |
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| CN103725236A true CN103725236A (en) | 2014-04-16 |
| CN103725236B CN103725236B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410010955.5A Expired - Fee Related CN103740052B (en) | 2013-12-09 | 2014-01-08 | Water sucting glue and preparation method thereof, application |
| CN201410009478.0A Expired - Fee Related CN103709601B (en) | 2013-12-09 | 2014-01-08 | Sheet material containing modified urea-formaldehyde foamed glue and the application of sheet material and preparation method thereof |
| CN201410010966.3A Expired - Fee Related CN103725236B (en) | 2013-12-09 | 2014-01-08 | Foamed glue and preparation method thereof |
| CN201410008927.XA Pending CN103711212A (en) | 2013-12-09 | 2014-01-08 | Insulation board, application and manufacturing method of insulation board |
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| CN201410010955.5A Expired - Fee Related CN103740052B (en) | 2013-12-09 | 2014-01-08 | Water sucting glue and preparation method thereof, application |
| CN201410009478.0A Expired - Fee Related CN103709601B (en) | 2013-12-09 | 2014-01-08 | Sheet material containing modified urea-formaldehyde foamed glue and the application of sheet material and preparation method thereof |
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| CN201410008927.XA Pending CN103711212A (en) | 2013-12-09 | 2014-01-08 | Insulation board, application and manufacturing method of insulation board |
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Cited By (3)
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| CN105199065A (en) * | 2015-09-25 | 2015-12-30 | 寿光市东宇鸿翔木业有限公司 | Low-formaldehyde urea adhesive and method for preparing same |
| CN105295776A (en) * | 2015-10-09 | 2016-02-03 | 太仓市世佳实业有限公司 | Bonding foaming adhesive and application thereof in insulation board system |
| CN108543108A (en) * | 2018-05-02 | 2018-09-18 | 山东虎力机械有限公司 | A kind of department of anesthesia often uses sterilizing sponge |
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| CN104789172A (en) * | 2015-05-08 | 2015-07-22 | 南通天燕纺织器材有限公司 | Improved textile shuttle |
| CN105175668B (en) * | 2015-09-25 | 2017-12-05 | 南京师范大学 | A kind of acicular wollastonite/Lauxite formula for mineral wool insulation material |
| CN106221630B (en) * | 2016-07-29 | 2019-06-25 | 神盾防火科技有限公司 | A kind of adhesive and its application for sand ground antiseepage |
| CN106677359A (en) * | 2016-11-21 | 2017-05-17 | 成都格瑞思文化传播有限公司 | Environment-friendly heat preservation board |
| CN112343189A (en) * | 2020-10-30 | 2021-02-09 | 江苏春迈建筑科技有限公司 | Fireproof and heat-insulation integrated plate |
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| CN105295776A (en) * | 2015-10-09 | 2016-02-03 | 太仓市世佳实业有限公司 | Bonding foaming adhesive and application thereof in insulation board system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103725236B (en) | 2016-04-20 |
| CN103740052A (en) | 2014-04-23 |
| CN103709601B (en) | 2016-04-20 |
| CN103709601A (en) | 2014-04-09 |
| CN103740052B (en) | 2015-11-18 |
| CN103711212A (en) | 2014-04-09 |
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