Water capsule, preparation method thereof, preparation method of light concrete and structure of light concrete
A technology of water capsules and concrete, which is applied in the field of materials, can solve the problems of foam concrete density and strength adverse effects, bubble damage, etc., and achieve the effect of ingenious structural design, avoiding bubble rupture, and strong practicability
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[0046] Further, the present invention also proposes a method for preparing the above-mentioned water capsule, comprising the following steps:
[0047] Dissolving both water and alkali-swellable dissolving polymers in organic solvents to form an internal oil phase;
[0048] Evenly disperse the inner oil phase in the immiscible outer oil phase to form a stable emulsion;
[0049] Formation of water capsules by evaporating organic solvents from emulsions;
[0050] Purified water capsules are formed by filtering and washing the capsules multiple times.
[0051] Here, methanol can be used as the organic solvent.
[0052] In the present invention, the weight ratio of the alkali-swollen and dissolved polymer to the total weight of water and methanol is 1%-7%; the volume ratio of methanol to water is 95:5.
[0053] In the present invention, liquid paraffin is used for the outer oil phase, which contains 1% by weight of a stabilizer, and the volume ratio of the inner oil phase to the...
no. 1 example
[0061] In this embodiment, a copolymer of methacrylic acid-methyl methacrylate (referred to as Polymer) is used as the alkali-swellable dissolving polymer. Such as Figure 4 As shown, the alkali-swellable dissolving polymer and water were sequentially incorporated into methanol to form an internal oil phase. Among them, the weight ratio of the alkali-swellable dissolving polymer (referred to as HASE) to the total weight of water and methanol is 1%; the volume ratio of methanol to water is 95:5; the weight ratio of methylene blue dye to the internal oil phase is 0.1%. The internal oil phase is evenly dispersed in liquid paraffin to form a stable emulsion. Water capsules are formed by evaporating organic solvents from emulsions, such as Figure 5 shown. Here, the stirring speed was 600 rpm, and the stirring temperature was 45°C.
[0062] Carry out SEM analysis to water capsule, obtain SEM image, such as Figure 6 shown.
[0063] Get 20mg water capsules and carry out thermogr...
no. 2 example
[0066] In this embodiment, a copolymer of methacrylic acid-methyl methacrylate (referred to as Polymer) is used as the alkali-swellable dissolving polymer. The alkali-swellable dissolving polymer and water are sequentially blended into methanol to form an internal oil phase. Among them, the weight ratio of the alkali-swellable dissolving polymer (referred to as HASE) to the total weight of water and methanol is 3%; the volume ratio of methanol to water is 95:5; the weight ratio of methylene blue dye to the internal oil phase is 0.1%. The internal oil phase is evenly dispersed in liquid paraffin to form a stable emulsion. Water capsules are formed by evaporating organic solvents from emulsions. Here, the stirring speed was 600 rpm, and the stirring temperature was 45°C.
[0067] Carry out SEM analysis to water capsule, obtain SEM image, such as Figure 9 shown.
[0068] Get 20mg water capsules and carry out thermogravimetric-differential thermal analysis, obtain thermogravi...
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