CN104445238B - Modified water glass and preparation method thereof - Google Patents
Modified water glass and preparation method thereof Download PDFInfo
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- CN104445238B CN104445238B CN201410652007.1A CN201410652007A CN104445238B CN 104445238 B CN104445238 B CN 104445238B CN 201410652007 A CN201410652007 A CN 201410652007A CN 104445238 B CN104445238 B CN 104445238B
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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 force 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
Waterglass is also known as the aqueous solution of sodium silicate, it it is a kind of inorganic adhesive, and use pearlite heat-insulation plate that waterglass prepares as bonding agent owing to its cost is low, production technology simple, high insulating effect and there is the fireproof heat insulating characteristic of uniqueness, become the hot product substituting organic heat-insulating plate.Waterglass as bonding agent play the mechanism of bonding effect be when waterglass and glued expanded perlite granule generation dehydration or form hydrogen bond time, the SiO just precipitated out in water glass solution2Colloidal solid has very big activity, newborn SiO2Micelle defines the bonded joint with some strength with expanded perlite granule surface in coacervation process.
But as the pearlite heat-insulation plate of bonding agent, this use waterglass also has that intensity is relatively on the low side, water absorption rate is high, the natural defect such as big, the material easy accumulation of salt in the surface soil of wet of loss of strength after absorbent drying, leverages its construction application in exterior-wall heat insulation.Therefore for improving waterglass as material bond performance in actual applications, it is necessary to be modified processing the adhesive strength to improve waterglass, resistant to hydrolysis performance to it, and improve the performances such as bonding toughness.
German C.Wallenhorst etc. proposes the bonding silicate sclerous reaction pattern of waterglass can be divided into acid curing agent solidification process and alkalescence or without two kinds of curing mechanisms of firming agent solidification process, propose the speed that in waterglass, colloidal particle is grown up under acid solidification extremely slow, but be directly gathered into three-dimensional netted gelinite and slowly solidify again；And colloidal particle is first constantly grown up under without firming agent and alkaline curing agent effect, form collosol structure；And the colloidal sol example of single existence only could form tridimensional network under the crosslinking of accelerator.Actually used process is then SiO2One 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 waterglass to have that intensity is relatively on the low side, water absorption rate is high as the pearlite heat-insulation plate of bonding agent, the natural defect such as big, the material easy accumulation of salt in the surface soil of wet of loss of strength after absorbent drying, for solving the problems referred to above, the present invention provides a kind of modified water glass and preparation method thereof.
It is an object of the invention to realize in the following manner:
A kind of modified water glass, it is characterised in that: it is made up of the raw material of following weight portion: span6010-15 part, tween6010-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, waterglass 60-80 part, waterglass reinforcing agent 1-2 part.
The described at least one that waterglass reinforcing agent is Ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
The preferred modulus of described waterglass is 2.5-3.0, and Baume degrees is 40-45 ° of B é, and moisture content is 45-50%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion is placed in clean beaker, then beaker is placed in firing equipment, is warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Relative to prior art, the present invention by homemade aqueous emulsion of dimethyl polysiloxane fluid obtain with alkali resistant TRC flexible acrylic acid emulsion compound the bonding toughness of a kind of comprehensive lifting waterglass Nian Jieqiangdu and resistant to hydrolysis performance modified water glass bonding agent, it is simultaneously introduced organic ester hardening modifying agent, is effectively improved the cohesive force of modified water glass bonding agent.
Detailed description of the invention
Embodiment 1:
A kind of modified water glass, it is characterised in that: it is made up of the raw material of following weight portion: span6010-15 part, tween6010-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, waterglass 60-80 part, waterglass reinforcing agent 1-2 part.
The described at least one that waterglass reinforcing agent is Ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
The preferred modulus of described waterglass is 2.5-3.0, and Baume degrees is 40-45 ° of B é, and moisture content is 45-50%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion is placed in clean beaker, then beaker is placed in firing equipment, is warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 2:
A kind of modified water glass, is made up of the raw material of following weight portion: span6010g, tween6010g, polydimethylsiloxane 20g, deionized water 45g, alkali resistant TRC flexible acrylic acid emulsion 30g, waterglass 60g, Ethyl formate 1g.
The preferred modulus of described waterglass is 2.5, and Baume degrees is 40 ° of B é, and moisture content is 45%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion 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, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 3:
A kind of modified water glass, is made up of the raw material of following weight portion: span6011g, tween6011g, polydimethylsiloxane 22g, deionized water 47g, alkali resistant TRC flexible acrylic acid emulsion 34g, waterglass 64g, ethyl acetate 1.2g.
The preferred modulus of described waterglass is 2.6, and Baume degrees is 41 ° of B é, and moisture content is 46%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion 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, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 4:
A kind of modified water glass, is made up of the raw material of following weight portion: span6012g, tween6012g, polydimethylsiloxane 24g, deionized water 49g, alkali resistant TRC flexible acrylic acid emulsion 38g, waterglass 68g, propyl acetate 1.4g.
The preferred modulus of described waterglass is 2.7, and Baume degrees is 42 ° of B é, and moisture content is 47%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion 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, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 5:
A kind of modified water glass, is made up of the raw material of following weight portion: span6013g, tween6013g, polydimethylsiloxane 26g, deionized water 51g, alkali resistant TRC flexible acrylic acid emulsion 42g, waterglass 72g, propyl propionate 1.6g.
The preferred modulus of described waterglass is 2.8, and Baume degrees is 43 ° of B é, and moisture content is 48%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion is placed in clean beaker, then beaker is placed in firing equipment, be warming up to 82 DEG C, stir the mixture of span60 and tween60 with agitator, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 6:
A kind of modified water glass, is made up of the raw material of following weight portion: span6014g, tween6014g, polydimethylsiloxane 28g, deionized water 53g, alkali resistant TRC flexible acrylic acid emulsion 46g, waterglass 76g, Ethyl formate 0.9g, ethyl acetate 0.9g.
The preferred modulus of described waterglass is 2.9, and Baume degrees is 44 ° of B é, and moisture content is 49%.
Concrete operation step is:
A. span60 and the tween60 weighed according to weight portion is placed in clean beaker, then beaker is placed in firing equipment, be warming up to 85 DEG C, stir the mixture of span60 and tween60 with agitator, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
Embodiment 7:
A kind of modified water glass, is made up of the raw material of following weight portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 1.0g, propyl acetate 1.0g.
The preferred modulus of described waterglass is 3.0, and Baume degrees is 45 ° of B é, and moisture content 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 1.0g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, ethyl acetate 1.0g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, ethyl acetate 1.0g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, propyl propionate 1.0g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 0.5g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 0.5g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 0.5g, 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 portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, ethyl acetate 0.5g, propyl acetate 0.5g, propyl propionate 0.5g.
The other the same as in Example 1.
Embodiment 16:
A kind of modified water glass, is made up of the raw material of following weight portion: span6015g, tween6015g, polydimethylsiloxane 30g, deionized water 55g, alkali resistant TRC flexible acrylic acid emulsion 50g, waterglass 80g, Ethyl formate 0.5g, 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 portion: span6033g, tween6032g, polydimethylsiloxane 65g, deionized water 120g, alkali resistant TRC flexible acrylic acid emulsion 110g, waterglass 178g, propyl acetate 6g.The preferred modulus of described waterglass is 2.74, and Baume degrees is 40 ° of B é, and moisture content is 46.3%.
Concrete operation step is:
(1) span60 and the tween60 weighed according to weight portion 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 stirred span60 and tween60, so as to the formation colourless transparent liquid that dissolves each other completely；
(2) in beaker, it is slowly added to the polydimethylsiloxane that weighs by weight and quickly stirs, to be mixed homogeneous after, it is slowly added to the deionized water weighed by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
(4) difference precise 287g expanded perlite, 5.5g prodan, 2g white carbon is put in humidification batch mixer, opens batch mixer motor and within 3-5 minute, makes several solid material be sufficiently mixed.
(5) weigh waterglass 178g, then toward the compound emulsion hydrophober 50g of waterglass being wherein separately added into propyl acetate sclerosing agent 6g and step (3) prepares, with blender high-speed stirred uniform after can obtain modified water glass.
(6) modified water glass step (5) prepared adds in the liquid adding vessel of humidification batch mixer, connect the path valve humidifying batch mixer, open batch mixing motor and air compressor makes the adhesive of solid material and atomization be sufficiently mixed, the rotating speed of batch mixing motor controls at 180rpm, and the Stress control of air compressor is at 0.5MPa.
(7) after batch mixing to be humidified terminates, discharging is also uniformly filled up to mixing material in the die cavity of electro-hydraulic press 200 × 200 × 80mm, opens electro-hydraulic press compression making sheet, and 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) taking out the wet sample of compressing perlite sheet material, put in hot air drier and be dried to constant weight at 110 DEG C, take out natural cooling in atmosphere and prepare against follow-up performance test, result of the test is in Table 1.
The physical property of table 1 perlite sheet material
Claims (3)
1. a modified water glass, it is characterized in that: be made up of the raw material of following weight portion: span6010-15 part, tween6010-15 part, polydimethylsiloxane 20-30 part, deionized water 45-55 part, alkali resistant TRC flexible acrylic acid emulsion 30-50 part, waterglass 60-80 part, waterglass reinforcing agent 1-2 part；Described waterglass reinforcing agent is at least one in Ethyl formate, ethyl acetate, propyl acetate, propyl propionate.
2. a kind of modified water glass according to claim 1, it is characterised in that: the modulus of described waterglass is 2.5-3.0, and Baume degrees is 40-45 ° of B é, and moisture content is 45-50%.
3. the preparation method of a kind of modified water glass according to claim 1, it is characterised in that: concrete operation step is:
A. span60 and the tween60 weighed according to weight portion is placed in clean beaker, then beaker is placed in firing equipment, is warming up to 75-85 DEG C, stir the mixture of span60 and tween60 with agitator, so as to the formation colourless transparent liquid that dissolves each other completely；
B. in beaker, add the polydimethylsiloxane weighed by weight and stir, to be mixed homogeneous after, add the deionized water that weighs by weight, after the emulsion that whole system becomes milky 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 weighed by weight and aqueous emulsion of dimethyl polysiloxane fluid are carried out the mix and blend of 1:1, prepares into the compound emulsion hydrophober of waterglass；
D. contain with beaker and take the waterglass weighed by weight, be initially charged waterglass reinforcing agent, add the compound emulsion hydrophober of the step c waterglass prepared, modified water glass after stirring with blender, can be obtained.
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| Application Number | Priority Date | Filing Date | Title |
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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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| CN201410652007.1A CN104445238B (en) | 2014-11-17 | 2014-11-17 | Modified water glass and preparation method thereof |
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| CN104445238A CN104445238A (en) | 2015-03-25 |
| CN104445238B true CN104445238B (en) | 2016-07-06 |
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| CN114716167B (en) * | 2022-05-17 | 2023-01-31 | 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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| JPS6173778A (en) * | 1984-09-19 | 1986-04-15 | Sekisui Plastics Co Ltd | Water glass adhesive |
| SU1525184A1 (en) * | 1986-10-04 | 1989-11-30 | Научно-Исследовательская Лаборатория Физико-Химической Механики Материалов И Технологических Процессов Главмоспромстройматериалов | Adhesive for production of reinforced concrete articles coated with ceramic tile |
| CN1241953A (en) * | 1996-11-26 | 2000-01-19 | 卡伯特公司 | Method for producing organically modified, permanently hydrophobic aerogels |
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| JPS6173778A (en) * | 1984-09-19 | 1986-04-15 | Sekisui Plastics Co Ltd | Water glass adhesive |
| SU1525184A1 (en) * | 1986-10-04 | 1989-11-30 | Научно-Исследовательская Лаборатория Физико-Химической Механики Материалов И Технологических Процессов Главмоспромстройматериалов | Adhesive for production of reinforced concrete articles coated with ceramic tile |
| CN1241953A (en) * | 1996-11-26 | 2000-01-19 | 卡伯特公司 | Method for producing organically modified, permanently hydrophobic aerogels |
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