Preparation method and use method of cured polymer powder
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A technology of polymerizing powder and powder, which is applied in the direction of manufacturing tools, coagulating pavement laid on site, building components, etc., and can solve problems such as cracking, failure of Portland cement to form, and first breakage.
Inactive Publication Date: 2021-03-19
张映春
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[0002] With the development of society and the advancement and improvement of science and technology, people's living standards have gradually been improved. The application of Portland cement, commonly known as concrete, involves various fields. Whether it is architecture, urban construction, or sculpture landscape, concrete needs to be used for injection molding. However, the curing time of Portland cement is long, and it needs to be cured in time within 12 hours, otherwise, it will break and lose its effect. The standard strength of Portland cement is 28 days, so the molding time is long. Using silicon When Portland cement is used for 3D printing building materials, it needs to be maintained immediately after forming. If it is not maintained in time, cracking will occur. When using Portland cement to repair road sections, water-washed sand must be used. Cement cannot be molded and cannot achieve the effect of repairing road sections. When repairing leaks, debris and dust must also be cleaned up. The construction environment is demanding
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Embodiment 1
[0027] The raw materials for the preparation of solidified polymer powder include corn starch, sodium chloride, propylene oxide, hydrochloric acid, borax, and dolomite. The steps for the preparation of solidified polymer powder are as follows
[0028] Step 1: Put cornstarch, sodium chloride, propylene oxide, hydrochloric acid and borax into the reaction kettle, add water to the reaction kettle and heat to mix into glue, add defoamer and heat at 39°C to keep warm to form a transparent Viscous protective colloid, the viscosity of transparent viscous protective colloid is 2500mpas;
[0029] Step 2: Put the viscous protective colloid in the blending kettle, add the polymer emulsion and mix evenly, then add the defoamer and whoever adjusts the viscosity to 70mpas, the solid content reaches 39%, and heats up to 50°C to form a dispersion stand-by;
[0030] Step 3: Start the spray drying tower, make the temperature of the feed inlet at the top of the spray drying tower 140°C, input t...
Embodiment 2
[0041] The raw materials for the preparation of solidified polymer powder include corn starch, sodium chloride, propylene oxide, hydrochloric acid, borax, and dolomite. The steps for the preparation of solidified polymer powder are as follows
[0042] Step 1: Put cornstarch, sodium chloride, propylene oxide, hydrochloric acid and borax into the reaction kettle, add water to the reaction kettle and heat to mix into glue, add defoamer and heat at 41°C to keep warm to form a transparent Viscous protective colloid, the viscosity of transparent viscous protective colloid is 2500mpas;
[0043] Step 2: Put the viscous protective colloid in the blending kettle, add the polymer emulsion and mix evenly, then add the defoamer and whoever adjusts the viscosity to 200mpas, the solid content reaches 42%, and heats up to 55°C to form a dispersion stand-by;
[0044]Step 3: Start the spray drying tower, make the temperature of the feed inlet at the top of the spray drying tower 150°C, input t...
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Abstract
The invention discloses a preparation method and a use method of cured polymer powder, and relates to the technical field of cured polymer powder. The cured polymer powder is prepared from corn starchand cured polymer powder, does not need maintenance, does not crack or deform, and is naturally formed at the room temperature. The strength can reach 80-90% after 2 to 5 hours at the normal temperature, and reaches 100% after 70 hours. The temperature is high, and the reaction speed is fast. When the outdoor temperature is about 30 DEG C, the polymer powder is uniformly blended according to a ratio and poured into a roadbed, after 3 hours, vehicles can run on the roadbed; the property of the cured polymer powder is opposite to that of Portland cement, the Portland cement shrinks, while the cured polymer powder expands, after the 3D printing building material (the cured polymer powder) is printed and molded, maintenance is not needed, no waste is generated, and according to the construction requirements, different strengths can be achieved; the cured polymer powder is mixed with other materials in proportion, such as aeolian sand, coal ash, sandy soil, slag, stone seeds and the like,the materials are uniformly blended and can be used to repair the damaged asphalt road, sweeping is not needed, the cured polymer powder can be filled into a damaged part, and after 3 hours, the traffic can be recovered.
Description
technical field [0001] The invention relates to the technical field of solidified polymer powder, in particular to a method for preparing and using solidified polymer powder. Background technique [0002] With the development of society and the advancement and improvement of science and technology, people's living standards have gradually been improved. The application of Portland cement, commonly known as concrete, involves various fields. Whether it is architecture, urban construction, or sculpture landscape, concrete needs to be used for injection molding. However, the curing time of Portland cement is long, and it needs to be cured in time within 12 hours, otherwise, it will break and lose its effect. The standard strength of Portland cement is 28 days, so the molding time is long. Using silicon When Portland cement is used for 3D printing building materials, it needs to be maintained immediately after forming. If it is not maintained in time, cracking will occur. When u...
Claims
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