A kind of preparation method of white foam glassTechnical field
The present invention relates to a kind of preparation method of New Building Materials, especially a kind of manufacturing method of white foam glass.
Background technique
More stringent requirements are proposed for New Building Materials and wall thermal insulating system, it is desirable that there should be good thermal insulation property,There are resistance to compression outstanding, tension, anti-aging property again；There should be reliable protective performance, fundamentally block up exhausted fire hazard, againThere is the permanent characteristic of water proof anti-seepage, service life；Should be environmentally protective, it is nontoxic again；It should avoid conventional outer wallHeat-insulation system complex procedures can not monitor, the unwarranted problem of quality, and process is simple and direct again, is convenient for construction, and quality is guaranteed.Existing foam heat-insulating board currently on the market is protected by foam made of substrate of high-molecular organic materials such as plastics, rubberWarm plate.
External-wall heat-insulation material usually has claimed below: lower thermal coefficient, preferable thermal stability and hydrophobicity,Stronger gas permeability leads to the generation of wall internal condensation phenomenon when effectively can prevent vapor from migrating；With higherFreeze-thawing resistant ability, weatherability, ageing-resistant performance；There is stronger adaptability for base's deformation, can be at firstIn distortional stress is transmitted and is discharged, protection surface layer the phenomenon that will not falling off, cracking；Fire resisting with higher etc.Grade occurs that a large amount of poison gas will not be given out when open fire, when a fire, can effectively prevent the sprawling of the intensity of a fire.
Currently, polystyrene foam insulation board fire resistance is poor, it is also easy to cause fire, in addition intensity is lower, is easy damageIt is bad.Moreover, unsightly, generally require to finish fireprotection layer when the wall thermal insulating fire proofing material of the prior art is used in external wall surface of storied building,Decoration of exterior wall is done again, keeps cost of a building higher.The present invention is directed to unsightly with problem at high cost, proposes a kind of white foam glassThe preparation method of glass plate.
Summary of the invention
The present invention provides a kind of preparation method of white foam glass heat-insulating material, raw material use sillico aluminate glassPowder mixes auxiliary additive appropriate and carries out decolorization, through mixing, preheating, foaming, cooling, move back using lime stone as foaming agentFire forms.Purpose is to make full use of the effect of the expansion of lime stone and decolorising agent, in the white foamed glass of acquisitionMeanwhile the color of the appearance of high whiteness can either be obtained, it also can reduce density, improve thermal and insulating performance, and then improve materialExpect quality, while reducing cost.
Technical scheme is as follows:
A kind of white foam glass, which is characterized in that the glass includes basic component and at least one decoloration component: shouldBasic component includes: the SiO of about 70-76 moles %2；The CaO of about 5-9 moles %；The Al of 18 moles of % to about 22 moles of %2O3；The SnCl of about 1-2 moles %2；At least one decoloration component includes: a) being greater than the NiO of 0 mole of % to about 5 moles of %；And/orB) it is greater than the Se of 0 mole of % to about 4 moles of %.
The white foam glass obtains as follows:
1) premix is prepared: by 100 parts of the sillico aluminate glass powder, 10-15 parts of calcium carbonate, cream that granularity is 500 mesh or moreTurbid dose 2-5 parts, 1-4 parts of decolorising agent mixing, are added suitable water, ratio of grinding media to material 50:1, revolving speed 100-300rpm, ball milling 30min, instituteStating part is parts by weight；
2) mixture is put into foaming furnace and is sintered by following technique: from room temperature with the heating rate of 10 DEG C~15 DEG C/min400 DEG C are warming up to, 60 minutes progress the pre-heat treatments are kept the temperature, rises to 800 DEG C~950 DEG C with 15 DEG C~20 DEG C/min, heat preservation 30~300 DEG C are cooled to 15 DEG C~20 DEG C/min after sixty minutes, heat preservation naturally cooled to room temperature after 30 minutes；
3) foaming, molding material are cut by required area and thickness；Foam glass is then put into annealing5 DEG C in furnace~heating rate of 10 DEG C/min is warming up to 150-200 DEG C of heat preservation 1-3h and carries out stress relief annealing.
Preferably, the basic component of white foam glass includes: the SiO of about 70-75 moles %2；About 6-8 moles %'sCaO；The Al of 18 moles of % to about 22 moles of %2O3；The SnCl of about 1-2 moles %2；At least one decoloration component includes: a) bigIn the NiO of 0 mole of % to about 5 moles of %；And/or b) it is greater than the Se of 0 mole of % to about 4 moles of %.
Preferably, the basic component of white foam glass includes: the SiO of about 72-73 moles %2；About 6-7 moles %'sCaO；The Al of 20 moles of % to about 21 moles of %2O3；The SnCl of about 1-2 moles %2；At least one decoloration component includes: a) bigIn the NiO of 0 mole of % to about 5 moles of %；And/or b) it is greater than the Se of 0 mole of % to about 4 moles of %.
Preferably, the basic component of white foam glass includes: the SiO of about 72-73 moles %2；About 6-7 moles %'sCaO；The Al of 20 moles of % to about 21 moles of %2O3；The SnCl of about 1-2 moles %2；At least one decoloration component includes: a) bigIn the NiO of 0 mole of % to about 2 moles of %；And/or b) it is greater than the Se of 0 mole of % to about 2 moles of %.
The invention has the following advantages:
Opacifiers and decolorising agent is added by cooperation in preparation method of the invention, can obtain the higher foam glass of whitenessGlass；Low-density is obtained by the content and low sintering temperature that control foaming agent, foam glass of the invention can arbitrarily be cut,Carry out stress relief annealing after cutting, proof strength and manufacture craft is simple, low in raw material price is suitble to large-scale production.
Specific embodiment
Embodiment 1
A kind of white foam glass, the glass include basic component and at least one decoloration component: the basic component packetContain: the SiO of 74 moles of %2；The CaO of 5 moles of %；The Al of 18 moles of %2O3；The SnCl of 1 mole of %2；At least one decoloration groupSubpackage contains: the NiO of 2 moles of %.
The white foam glass obtains as follows:
1) it prepares premix: being 100 parts of sillico aluminate glass powder, 10 parts of calcium carbonate, opacifiers more than 500 mesh by granularitySnCl22 parts, 2 parts of decolorising agent NiO mixing, are added suitable water, ratio of grinding media to material 50:1, revolving speed 100-300rpm, ball milling 30min,Described part is parts by weight；
2) mixture is put into foaming furnace and is sintered by following technique: is warming up to from room temperature with the heating rate of 10 DEG C/min400 DEG C, 60 minutes progress the pre-heat treatments are kept the temperature, rise to 800 DEG C with 15 DEG C/min, heat preservation is cooled to after 30 minutes with 15 DEG C/min300 DEG C, heat preservation naturally cooled to room temperature after 30 minutes；
3) foaming, molding material are cut by required area and thickness；Foam glass is then put into annealingThe heating rate of 10 DEG C/min is warming up to 200 DEG C of heat preservation 3h and carries out stress relief annealing in furnace.
Embodiment 2
A kind of white foam glass, the glass include basic component and at least one decoloration component: the basic component packetContain: the SiO of 70 moles of %2；The CaO of 6 moles of %；The Al of 20 moles of %2O3；The SnCl of 2 moles of %2；At least one decoloration groupSubpackage contains: the NiO of 1 mole of %, the Se of 1 mole of %.
The white foam glass obtains as follows:
1) it prepares premix: being 100 parts of sillico aluminate glass powder, 8 parts of calcium carbonate, opacifiers more than 500 mesh by granularitySnCl24 parts, 2 parts of decolorising agent (NiO and Se) mixing, are added suitable water, ratio of grinding media to material 70:1, revolving speed 100-300rpm, ball milling30min, described part are parts by weight；
2) mixture is put into foaming furnace and is sintered by following technique: is warming up to from room temperature with the heating rate of 15 DEG C/min400 DEG C, 60 minutes progress the pre-heat treatments are kept the temperature, rise to 950 DEG C with 20 DEG C/min, heat preservation is cooled to after 30 minutes with 20 DEG C/min300 DEG C, heat preservation naturally cooled to room temperature after 30 minutes；
3) foaming, molding material are cut by required area and thickness；Foam glass is then put into annealingThe heating rate of 5 DEG C/min is warming up to 150 DEG C of heat preservation 1h and carries out stress relief annealing in furnace.
Comparative example 1
A kind of foam glass, the glass basic component includes: the SiO of 76 moles of %2；The CaO of 4 moles of %；20 rubThe Al of your %2O3。
The foam glass obtains as follows:
1) it prepares premix: 100 parts of sillico aluminate glass powder, 10 parts of foaming agent, addition that granularity is 500 mesh or more is fittedThe water of amount, ratio of grinding media to material 50:1, revolving speed 100-300rpm, ball milling 30min, described part is parts by weight；
2) mixture is put into foaming furnace and is sintered by following technique: is warming up to from room temperature with the heating rate of 10 DEG C/min400 DEG C, 60 minutes progress the pre-heat treatments are kept the temperature, rise to 800 DEG C with 15 DEG C/min, heat preservation is cooled to after 30 minutes with 15 DEG C/min300 DEG C, heat preservation naturally cooled to room temperature after 30 minutes；
3) foaming, molding material are cut by required area and thickness；Foam glass is then put into annealingThe heating rate of 10 DEG C/min is warming up to 200 DEG C of heat preservation 3h and carries out stress relief annealing in furnace.
Comparative example 2
A kind of foam glass, the glass basic component includes: the SiO of 75 moles of %2；The CaO of 4 moles of %；20 rubThe Al of your %2O3；The SnCl of 1 mole of %2。
The foam glass obtains as follows:
1) it prepares premix: being 100 parts of sillico aluminate glass powder, 6 parts of foaming agents, opacifiers more than 500 mesh by granularitySnCl21 part, suitable water is added, ratio of grinding media to material 50:1, revolving speed 100-300rpm, ball milling 30min, described part is parts by weight；
2) mixture is put into foaming furnace and is sintered by following technique: is warming up to from room temperature with the heating rate of 15 DEG C/min400 DEG C, 60 minutes progress the pre-heat treatments are kept the temperature, rise to 950 DEG C with 20 DEG C/min, heat preservation is cooled to after 30 minutes with 20 DEG C/min300 DEG C, heat preservation naturally cooled to room temperature after 30 minutes；
3) foaming, molding material are cut by required area and thickness；Foam glass is then put into annealingThe heating rate of 5 DEG C/min is warming up to 150 DEG C of heat preservation 1h and carries out stress relief annealing in furnace.
Following table lists the performance parameter of foam glass of the present invention.
It is merely preferred embodiments of the present invention, but scope of protection of the present invention is not limited thereto, appoints described in upperThe change or replacement what those familiar with the art is expected in the technical scope disclosed by the present invention, should all coverWithin protection scope of the present invention.