Method for preparing aperture-controllable low-temperature foam glass
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A foam glass, low temperature technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of reducing foaming temperature, dust pollution, etc., to reduce foaming temperature, dust pollution, and production cost. and social energy consumption
Inactive Publication Date: 2014-10-29
ZHEJIANG GAOMING GLASS
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Problems solved by technology
[0003] Aiming at the above-mentioned problems existing in the prior art, the present invention provides a preparation method of low-temperature foam glass with controllable pore size, the purpose of which is to reduce the foaming temperature, reduce the production cost, and solve the problem of dust pollution caused by dry mixing. At the same time, the present invention The invention realizes the control of the pore size and pore structure of foam glass by changing the mixing ratio of raw materials and the particle size of raw materials
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Embodiment 1
[0022] Weigh phosphorus pentoxide, boric acid, calcium carbonate, and glass powder according to the mass ratio of 0.1:1:2:100. Each material can be purchased from the market, and the glass powder and calcium carbonate are passed through a 100-mesh sieve respectively. Mix the sieved calcium carbonate, phosphorus pentoxide and boric acid, add water, stir, dry and grind to obtain a mixture. The mixture was mixed with sieved glass powder, shaped, put into a stainless steel box, heat treated at 750°C for 20 minutes, and a foam glass sample was obtained after annealing. The foam glass prepared by this formula has a small pore diameter of 0.5mm, and the pores in the sample mainly exist in the form of communication, and the sample has good sound absorption performance.
Embodiment 2
[0024] Weigh phosphorus pentoxide, boric acid, calcium carbonate, and glass powder at a mass ratio of 1:1:3:100, pass the glass powder through a 350-mesh sieve, and pass the calcium carbonate through a 100-mesh sieve. Mix the sieved calcium carbonate, phosphorus pentoxide and boric acid, add water, stir, dry and grind to obtain a mixture. Mix the mixture with sieved glass powder, shape it, put it into a stainless steel box, heat treat it at 730°C for 30 minutes, and obtain a foam glass sample after annealing. The foam glass prepared by this formula has a large pore diameter of 1-2 mm, and the pores in the sample are in the form of closed cells, and the sample has good thermal insulation performance.
Embodiment 3
[0026] Weigh phosphorus pentoxide, boric acid, calcium carbonate, and glass powder at a mass ratio of 0.5:1:3:100, pass the glass powder through a 300-mesh sieve, and pass the calcium carbonate through a 200-mesh sieve. Mix the sieved calcium carbonate, phosphorus pentoxide and boric acid, add water, stir, dry and grind to obtain a mixture. Mix the mixture with sieved glass powder, shape it, put it into a stainless steel box, heat treat it at 735°C for 25 minutes, and obtain a foam glass sample after annealing.
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Abstract
The invention discloses a method for preparing aperture-controllable low-temperature foam glass. The foam glass mainly comprises the following raw materials: a fluxing agent, a foam stabilizer, a foaming agent and glass powder. The preparation method comprises the following steps of carrying out wet mixing on the fluxing agent, the foam stabilizer and the foaming agent, drying and then grinding to form a mixture, carrying out wet mixing on the mixture and glass powder, molding, carrying out heat treatment under a high temperature condition and annealing to obtain the high-performance foam glass. In the preparation process, by changing the mixing ratio and particle sizes of the foam stabilizer, the foaming agent and the glass powder, the aperture and pore structure of the foam glass are adjusted. The preparation method disclosed by the invention has the advantages that the process is simple, the preparation energy consumption is less and the production cost can be effectively reduced; the prepared foam glass has sound absorption, heat preservation and thermal insulation effects, belongs to the national Class A fireproof material and can be widely used in indoor as thermal insulation, sound absorption and fireproof materials; since the foam glass material prepared by the method disclosed by the invention is mainly prepared from waste glass, the environmental pollution is reduced and the resource reutilization is achieved.
Description
technical field [0001] The invention relates to a preparation method of low-temperature foam glass with controllable pore size. Background technique [0002] With the development of society, solving the environmental pollution caused by construction waste has become an urgent problem to be solved, especially architectural glass, because glass is an inorganic substance, the natural degradation rate is slow, and the heavy metal contained in glass is easy to cause water pollution. In the last century, the French Saint-Gobain company first successfully developed foam glass with calcium carbonate as the blowing agent. Subsequently, the former Soviet Union also experimentally produced foam glass in the intermediate pilot plant of Mendeleev Institute of Chemical Technology. The use of waste glass to prepare foam glass has received widespread attention and research. The use of waste glass to prepare foam glass can not only solve the role of waste glass in polluting the environment, ...
Claims
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Application Information
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