CN104445238A - Modified water glass and preparation method thereof - Google Patents
Modified water glass and preparation method thereof Download PDFInfo
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- CN104445238A CN104445238A CN201410652007.1A CN201410652007A CN104445238A CN 104445238 A CN104445238 A CN 104445238A CN 201410652007 A CN201410652007 A CN 201410652007A CN 104445238 A CN104445238 A CN 104445238A
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Abstract
The invention discloses modified water glass, which is characterized in that: the feed is prepared from the following raw materials in parts by weight: span 6010-15 parts, tween 6010-15 parts, polydimethylsiloxane 20-30 parts, deionized water 45-55 parts, alkali-resistant TRC flexible acrylic emulsion 30-50 parts, water glass 60-80 parts, and water glass reinforcing agent 1-2 parts. Compared with the prior art, the modified water glass adhesive comprehensively improving the water glass bonding strength, the bonding toughness and the hydrolysis resistance is obtained by compounding the self-made polydimethylsiloxane emulsion and the alkali-resistant TRC flexible acrylic emulsion, and the bonding power of the modified water glass adhesive is effectively improved by adding the organic ester hardening modifier.
Description
Technical field
The invention belongs to adhesive techniques field, be specifically related to a kind of modified water glass and preparation method thereof.
Background technology
Water glass is also known as the aqueous solution of water glass, it is a kind of inorganic adhesive, and the pearlite heat-insulation plate using water glass to prepare as caking agent because its cost is low, production technique simple, high insulating effect and there is unique fireproof heat insulating characteristic, become the hot product of alternative organic heat-insulating plate.Water glass as the mechanism that caking agent plays bonding effect be when water glass with by bonding expanded perlite granule generation dehydration reaction or form hydrogen bond time, the SiO just separated out in water glass solution
2colloidal solid has very large activity, newborn SiO
2micelle defines the bonded joint with some strength with expanded perlite granule surface in agglomeration process.
But as the pearlite heat-insulation plate of caking agent, this use water glass also has that intensity is relatively on the low side, water-intake rate is high, the natural defect such as large, the easy accumulation of salt in the surface soil of material wet of loss of strength after absorbent drying, greatly have impact on its construction application in exterior-wall heat insulation.Therefore for improving water glass as material bond performance in actual applications, modification must be carried out to improve the bonding strength of water glass to it, resistant to hydrolysis performance, and improving the performances such as bonding toughness.
Fritz C.Wallenhorst etc. proposes water glass bonding silicate sclerous reaction pattern and acid curing agent solidification process can be divided into alkalescence or without solidifying agent solidification process two kinds of curing mechanisms, in water glass, colloidal particle is grown up under acid solidification the speed of proposition is extremely slow, but is directly gathered into three-dimensional netted gelinite and slowly solidifies; And colloidal particle is first constantly grown up under without solidifying agent and alkaline curing agent effect, form collosol structure; And the colloidal sol example of single existence only could form tridimensional network at the crosslinked lower of promotor.Actual use procedure is then SiO
2a comprehensive regulation process of gel particle size and gel network growth degree.
Summary of the invention
The technical problem to be solved in the present invention be use as the pearlite heat-insulation plate of caking agent, water glass has that intensity is relatively on the low side, water-intake rate is high, the natural defect such as large, the easy accumulation of salt in the surface soil of material wet of loss of strength after absorbent drying, for solving the problem, the invention provides a kind of modified water glass and preparation method thereof.
The object of the invention is to realize in the following manner:
A kind of modified water glass, it is characterized in that: be made up of the raw material of following weight part: span60 10-15 part, tween60 10-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, water glass 60-80 part, water glass toughener 1-2 part.
Described water glass toughener is at least one of ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
The preferred modulus of described water glass is 2.5-3.0, and degree Beaume is 40-45 ° of B é, and water ratio is 45-50%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in heating installation, be warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1-2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Relative to prior art, the present invention by homemade aqueous emulsion of dimethyl polysiloxane fluid and alkali resistant TRC flexible acrylic acid emulsion compound obtain the bonding toughness of a kind of comprehensive lifting water glass Nian Jieqiangdu and resistant to hydrolysis performance modified water glass caking agent, add organic ester hardening properties-correcting agent simultaneously, effectively improve the cohesive force of modified water glass caking agent.
Embodiment
Embodiment 1:
A kind of modified water glass, it is characterized in that: be made up of the raw material of following weight part: span60 10-15 part, tween60 10-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, water glass 60-80 part, water glass toughener 1-2 part.
Described water glass toughener is at least one of ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
The preferred modulus of described water glass is 2.5-3.0, and degree Beaume is 40-45 ° of B é, and water ratio is 45-50%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in heating installation, be warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1-2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 2:
A kind of modified water glass, is made up of the raw material of following weight part: span60 10 g, tween60 10 g, polydimethylsiloxane 20 g, deionized water 45 g, alkali resistant TRC flexible acrylic acid emulsion 30 g, water glass 60 g, ethyl formate 1 g.
The preferred modulus of described water glass is 2.5, and degree Beaume is 40 ° of B é, and water ratio is 45%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in oil bath pan, be warming up to 75 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 3:
A kind of modified water glass, is made up of the raw material of following weight part: span60 11 g, tween60 11 g, polydimethylsiloxane 22 g, deionized water 47 g, alkali resistant TRC flexible acrylic acid emulsion 34 g, water glass 64 g, ethyl acetate 1.2 g.
The preferred modulus of described water glass is 2.6, and degree Beaume is 41 ° of B é, and water ratio is 46%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in water-bath, be warming up to 77 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1.2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 4:
A kind of modified water glass, is made up of the raw material of following weight part: span60 12 g, tween60 12 g, polydimethylsiloxane 24 g, deionized water 49 g, alkali resistant TRC flexible acrylic acid emulsion 38 g, water glass 68 g, propyl acetate 1.4 g.
The preferred modulus of described water glass is 2.7, and degree Beaume is 42 ° of B é, and water ratio is 47%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in infra red heating device, be warming up to 79 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1.5min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 5:
A kind of modified water glass, is made up of the raw material of following weight part: span60 13 g, tween60 13 g, polydimethylsiloxane 26 g, deionized water 51 g, alkali resistant TRC flexible acrylic acid emulsion 42 g, water glass 72 g, propyl propionate 1.6 g.
The preferred modulus of described water glass is 2.8, and degree Beaume is 43 ° of B é, and water ratio is 48%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in heating installation, be warming up to 82 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1.8min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 6:
A kind of modified water glass, is made up of the raw material of following weight part: span60 14 g, tween60 14 g, polydimethylsiloxane 28 g, deionized water 53 g, alkali resistant TRC flexible acrylic acid emulsion 46 g, water glass 76 g, ethyl formate 0.9 g, ethyl acetate 0.9g.
The preferred modulus of described water glass is 2.9, and degree Beaume is 44 ° of B é, and water ratio is 49%.
Concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in heating installation, be warming up to 85 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
Embodiment 7:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 1.0 g, propyl acetate 1.0g.
The preferred modulus of described water glass is 3.0, and degree Beaume is 45 ° of B é, and water ratio is 50%.
The other the same as in Example 1.
Embodiment 8:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 1.0 g, propyl propionate 1.0g.
The other the same as in Example 1.
Embodiment 9:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl acetate 1.0 g, propyl propionate 1.0g.
The other the same as in Example 1.
Embodiment 10:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl acetate 1.0 g, propyl acetate 1.0g.
The other the same as in Example 1.
Embodiment 11:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, propyl propionate 1.0 g, propyl acetate 1.0g.
The other the same as in Example 1.
Embodiment 12:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 0.5 g, propyl propionate 0.5g, ethyl acetate 0.5g.
The other the same as in Example 1.
Embodiment 13:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 0.5 g, propyl acetate 0.5g, ethyl acetate 0.5g.
The other the same as in Example 1.
Embodiment 14:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 0.5 g, propyl acetate 0.5g, propyl propionate 0.5g.
The other the same as in Example 1.
Embodiment 15:
A kind of modified water glass, is made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl acetate 0.5 g, propyl acetate 0.5g, propyl propionate 0.5g.
The other the same as in Example 1.
Embodiment 16:
A kind of modified water glass, be made up of the raw material of following weight part: span60 15 g, tween60 15 g, polydimethylsiloxane 30 g, deionized water 55 g, alkali resistant TRC flexible acrylic acid emulsion 50 g, water glass 80 g, ethyl formate 0.5 g, ethyl acetate 0.5g, propyl acetate 0.5g, propyl propionate 0.5g.
The other the same as in Example 1.
Embodiment 17
A kind of modified water glass, is made up of the raw material of following weight part: span60 33 g, tween60 32 g, polydimethylsiloxane 65 g, deionized water 120 g, alkali resistant TRC flexible acrylic acid emulsion 110 g, water glass 178g, propyl acetate 6g.The preferred modulus of described water glass is 2.74, and degree Beaume is 40 ° of B é, and water ratio is 46.3%.
Concrete operation step is:
(1) span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in oil bath pan, be warming up to 80 DEG C, with the mixture of agitator high-speed stirring span60 and tween60, make it the formation colourless transparent liquid that dissolves each other completely;
(2) in beaker, the polydimethylsiloxane taken by weight is slowly added and rapid stirring, to be mixed homogeneous after, slowly add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1-2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
(3) the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
(4) difference precise 287g pearlstone, 5.5g Sodium Silicofluoride, humidification mixer put into by 2g white carbon black, opens mixer motor and within 3-5 minute, makes several solid materials fully mix.
(5) take water glass 178g, then toward the compound emulsion hydrophober 50g of water glass wherein adding propyl acetate stiffening agent 6g and step (3) respectively and prepare, with stirrer high-speed stirring evenly after can obtain modified water glass.
(6) modified water glass that step (5) prepares is added in the liquid adding vessel of humidification mixer, be communicated with the path valve of humidification mixer, unlatching batch mixing motor and air compressor make the tackiness agent of solid materials and atomization fully mix, the rotating speed of batch mixing motor controls at 180rpm, and the pressure-controlling of air compressor is at 0.5MPa.
(7) after batch mixing to be humidified terminates, discharging is also evenly filled up to mixing material in the die cavity of electro-hydraulic press 200 × 200 × 80 mm, and open electro-hydraulic press compression making sheet, compression ratio controls in 2.0 ± 0.1 scopes, the dwell time of compression is 30 seconds, and after completing pressurize, electro-hydraulic press resets.
(8) take out the perlite sheet material of compression moulding to wet sample, put into hot air drier and be dried to constant weight at 110 DEG C, take out in atmosphere that naturally cooling is in order to follow-up performance test, test-results is in table 1.
The physicals of table 1 perlite sheet material
Claims (4)
1. a modified water glass, it is characterized in that: be made up of the raw material of following weight part: span60 10-15 part, tween60 10-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, water glass 60-80 part, water glass toughener 1-2 part.
2. a kind of modified water glass according to claim 1, is characterized in that: described water glass toughener is at least one in ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
3. a kind of modified water glass according to claim 1, is characterized in that: the preferred modulus of described water glass is 2.5-3.0, and degree Beaume is 40-45 ° of B é, and water ratio is 45-50%.
4. the preparation method of a kind of modified water glass according to claim 1, is characterized in that: concrete operation step is:
A. span60 and tween60 taken according to weight part is placed in clean beaker, then beaker is placed in heating installation, be warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, make it the formation colourless transparent liquid that dissolves each other completely;
B. in beaker, add the polydimethylsiloxane taken by weight and stir, to be mixed homogeneous after, add the deionized water taken by weight, after the emulsion that whole system becomes oyster white stable homogeneous, take out beaker and carry out ultrasonic disperse 1-2min, prepared by aqueous emulsion of dimethyl polysiloxane fluid;
C. the alkali resistant TRC flexible acrylic acid emulsion taken by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, be prepared into the compound emulsion hydrophober of water glass;
D. contain with beaker and get the water glass taken by weight, first add water glass toughener, then add the compound emulsion hydrophober of water glass that step c prepares, after stirring with stirrer, can modified water glass be obtained.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652007.1A CN104445238B (en) | 2014-11-17 | 2014-11-17 | Modified water glass and preparation method thereof |
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| CN201410652007.1A CN104445238B (en) | 2014-11-17 | 2014-11-17 | Modified water glass and preparation method thereof |
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| CN104445238A true CN104445238A (en) | 2015-03-25 |
| CN104445238B CN104445238B (en) | 2016-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716167A (en) * | 2022-05-17 | 2022-07-08 | 石家庄易辰防火保温材料有限公司 | Modified water glass for preparing heat-insulating fireproof material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114716167A (en) * | 2022-05-17 | 2022-07-08 | 石家庄易辰防火保温材料有限公司 | Modified water glass for preparing heat-insulating fireproof material |
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| Publication number | Publication date |
|---|---|
| CN104445238B (en) | 2016-07-06 |
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