High-performance foaming cement and preparation method thereof
A foamed cement, high-performance technology, used in ceramic products, other household appliances, applications, etc., can solve the problem of foam stability, poor size uniformity, product quality that does not meet design requirements, and easy bleeding and segregation of slurry. problems, to ensure thermal insulation performance, facilitate pumping and pouring, increase selectivity and adaptability
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Embodiment 1
[0027] A kind of high-performance foamed cement proportioning by weight:
[0028] Wherein the cement slurry is made according to the following proportions by weight:
[0029] Ordinary Portland cement 100 parts, Paris plaster powder 20 parts,
[0030] 30 parts of fly ash, 25 parts of wollastonite powder,
[0031] 3 parts of vinyl acetate and ethylene copolymer rubber powder, 1.0 parts of hydroxypropyl methylcellulose ether,
[0032] 0.6 parts of amino acid superplasticizer, 0.3 parts of silicone water repellent,
[0033] 70 parts of water;
[0034] The foam is made according to the following proportions by weight:
[0035] 1 part of compound foaming agent, 0.6 part of lauryl betaine
[0036] 40 parts of water.
[0037] Preparation method: 1) Mix the components of the cement slurry evenly in proportion, and stir them well to prepare the cement slurry; 2) Mix the components of the foam evenly in proportion, prepare the foam through a foaming machine, and prefabricate The f...
Embodiment 1
[0038] The main technical index of embodiment 1 is as follows: dry apparent density 520kg / m 3 , thermal conductivity 0.089W / (m·K), compressive strength 1.8MPa, linear shrinkage 0.3%, water absorption 7%.
Embodiment 2
[0040] A kind of high-performance foamed cement proportioning by weight:
[0041] Wherein the cement slurry is made according to the following proportions by weight:
[0042] Ordinary Portland cement 80 parts, high alumina cement 20 parts,
[0043] 10 parts of anhydrite powder, 10 parts of silica fume,
[0044] 10 parts of zeolite powder, 1 part of cold-soluble polyvinyl alcohol powder,
[0045] 0.5 parts of methyl hydroxyethyl cellulose ether, 0.2 parts of polycarboxylate high-performance water reducer,
[0046] 0.1 part of silane-based water repellent, 2 parts of tartaric acid,
[0047] 40 parts of water;
[0048] The foam is made according to the following proportions by weight:
[0049] 1 part of vegetable foaming agent, 0.2 part of coconut oil fatty acid diethanolamide,
[0050]30 parts of water.
[0051] The preparation method is the same as in Example 1, except that the prefabricated foam bulk density is 50 kg / m 3 , The weight ratio of prefabricated cement paste...
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