Machine spray putty material and preparation method thereof
A technology of putty and base material, which is applied in the field of machine-sprayed putty materials and its preparation, can solve the problems of putty failure, high pumping resistance, strong thixotropy of putty, etc., and achieve reduced mechanical loss, reduced pumping resistance, good flow flat effect effect
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[0060] A preparation method for machine-sprayed putty material, comprising the following steps:
[0061] Mixed base material, water reducing agent, cellulose ether, modified hydroxypropyl starch ether and filler;
[0062] The parts by weight of the base material are 0.5-35 parts; the parts by weight of the water reducing agent are 0.05-0.5 parts; the parts by weight of cellulose ether are 0.1-0.6 parts; The parts by weight are 0.02-0.2 parts; the parts by weight of the filler are 65-90 parts; the water-reducer is selected from naphthalene-based water-reducer and / or melamine water-reducer; the cellulose ether is at 20 The viscosity at °C is 20000mPa·s-40000mPa·s; the degree of substitution of the modified hydroxypropyl starch ether is 0.05-0.08, and the viscosity at 20°C is 400mPa·s-1200mPa·s.
[0063] A method for using a machine-sprayed putty material, comprising the following steps:
[0064] Spray the putty material and water on the mixer, let it stand after stirring, and ...
Embodiment 1
[0072] This embodiment provides a machine-sprayed putty material and its preparation method and use method, the steps are as follows:
[0073] In parts by weight, weigh 16 parts of white cement, 3 parts of vinyl acetate-ethylene latex powder, 0.3 part of water reducing agent, 0.3 part of hydroxypropyl methylcellulose ether, 0.08 part of modified hydroxypropyl starch ether, 0.5 parts of defoamer, 20 parts of ground calcium carbonate, 30 parts of kaolin, 30 parts of talcum powder.
[0074] Preparation method: the above-mentioned white cement, vinyl acetate-ethylene latex powder, water reducer, hydroxypropyl methylcellulose ether, modified hydroxypropyl starch ether, defoamer, ground calcium carbonate, kaolin and talcum powder Pour into mixing equipment and mix evenly, then weigh and pack.
[0075] How to use: Weigh 40 parts of water, pour in other powders, stir at high speed for 4 minutes, then let stand for 10 minutes, then stir for 2 minutes.
Embodiment 2
[0077] This embodiment provides a machine-sprayed putty material and its preparation method and use method, which are basically the same as in Embodiment 1, the only difference being that the filler is different, and the steps are as follows:
[0078] In parts by weight, weigh 16 parts of white cement, 3 parts of vinyl acetate-ethylene latex powder, 0.3 part of water reducing agent, 0.3 part of hydroxypropyl methylcellulose ether, 0.08 part of modified hydroxypropyl starch ether, 0.5 parts of defoamer, 40 parts of kaolin, 40 parts of talcum powder.
[0079] Preparation method: Pour the above white cement, vinyl acetate-ethylene latex powder, water reducer, hydroxypropyl methylcellulose ether, modified hydroxypropyl starch ether, defoamer, kaolin and talc into the mixing equipment Mix well, weigh and pack.
[0080] How to use: Weigh 40 parts of water, pour in other powders, stir at high speed for 4 minutes, then let stand for 10 minutes, then stir for 2 minutes.
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