CN104045239A - Preparation method of high-strength foam glass - Google Patents

Preparation method of high-strength foam glass Download PDF

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Publication number
CN104045239A
CN104045239A CN201410295691.2A CN201410295691A CN104045239A CN 104045239 A CN104045239 A CN 104045239A CN 201410295691 A CN201410295691 A CN 201410295691A CN 104045239 A CN104045239 A CN 104045239A
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China
Prior art keywords
glass
fiber
raw material
high silica
powder
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Pending
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CN201410295691.2A
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Chinese (zh)
Inventor
李坤
胡东
李政
孙富兴
陈俊律
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Changzhou University
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Changzhou University
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Priority to CN201410295691.2A priority Critical patent/CN104045239A/en
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Abstract

The invention relates to a method for enhancing compression strength of foam glass.1-8% of aluminum oxide fiber or mullite fiber or high silica glass fiber can be added in the foam glass production process to greatly enhance the compression strength of the foam glass, thereby reducing the damage in the foam glass use process. The aluminum oxide fiber (or mullite fiber or high silica glass fiber) is fiber waste of which the length is only 3-10mm; and thus, the method is lower in production cost and suitable for industrialized mass production.

Description

A kind of preparation method of high-intensity foam glass
Technical field
The present invention relates to the recycle of waste inorganic glass.Refer in particular to one and utilize waste inorganic glass, through pulverizing, ball milling, the method for sintered and foamed production high-strength light foamed glass.
Background technology
Multicellular glass claims again glass pumice, it is by scrap glass, the material that flyash mica perlite pumice sand volcanic ash etc. is rich in glassy phase is main raw material, add modification of foaming agent agent, promotor, broken and be uniformly mixed into admixtion through fine powder, be placed on the heating of particular mold process 780-880 temperature, make a kind of inside of the softening foaming annealing formation of glass be full of the sintered glass phase material of countless even bubbles.
Scrap glass is the broken glass in scrap stock or the daily life of household building industry.Due to glass hard degradation, dialectal switching is sharp, can only carry out in the past landfill disposal.Take valuable land resources, increased environmental pressure.According to estimates, the annual cullet of producing of China has 3,200,000 tons, accounts for 2% left and right of domestic refuse.Along with the enhancing of overall national strength, the raising of living standards of the people, the total amount of cullet also can increase thereupon.
Multicellular glass is that a kind of volume density is little, and intensity is high, is full of the vitreous material of spilehole, there is the effect of water conservation water suction heat preserving heat insulating noise insulation, at present for the insulation of heat distribution pipeline, the light sound-proof wall of building construction inside, the fields such as the roof heat insulation of buildings; Water conservation in flowers, plant growing process, anti-the going mouldy of rainwater storage of arid area, the fields such as sewage disposal have wide practical use.
Current foam glass product pressure-proof and snap-resistent intensity is not high, and its range of application is subject to certain restrictions, and improves multicellular glass pressure-proof and snap-resistent intensity, can make to expand this product application scope, can also make product increment.
Summary of the invention
Preparing in the process of glass pumice, originally preparing on the basis of glass pumice as required, add sapphire whisker or mullite fiber or high silica glass fiber, utilize imbibition characteristic that these high-temperature fibres and glass melt are good and good rigidity, improve the ultimate compression strength of foamed glass.
The present invention has following features:
(1) provided by the present invention to prepare glass pumice method simple, and its technical process and traditional technique are as good as, easily operation;
(2) sapphire whisker required for the present invention or mullite fiber or high silica glass fiber are staple fibre, and its length, between 2-10mm, can, with the discarded short silk material in fiber production, be therefore also waste utilization, and cost is low.
(3) method of the present invention, under prerequisite cheaply, improves simple glass pumice intensity significantly, has significantly reduced the probability of damage of foamed glass in transport, installation and use procedure, has improved the weather resistance of product.
Brief description of the drawings
Fig. 1 high strength foamed glass production technological process
Fig. 2 is the relation between Alumina Fiber Volume Fraction and ultimate compression strength;
Fig. 3 is the relation between Alumina Fiber Volume Fraction and void content;
Fig. 4 is the relation between Alumina Fiber Volume Fraction and volume density and aperture;
The multicellular glass scanning electron microscope picture that Fig. 5 contains sapphire whisker.
Embodiment
The embodiment of sapphire whisker reinforced foam glass preparation is as follows:
(1) raw material is chosen: select windowpane discarded in daily life as raw material, to the scrap glass classification of different colours; Remove leaded broken fitting glass.
(2) glass powder preparation: rinse the impurity on scrap glass surface with clear water, and cullet is shone to parching, be ground into the particle below 3mm with crusher, then be milled to meta particle diameter 75um left and right, mistake 200 order stainless steel meshs.
(3) batching: by ratio of components: cullet powder: calcium carbonate: sapphire whisker: polymer phosphate ammonium=90-100:1-7:1-8:1-2 takes respectively desired raw material, pour stainless steel vessel into and mix.
(4) mould or crawler belt are prepared: add temperature higher than dissolving in the hot water of 90 DEG C PVA according to polyvinyl alcohol (the PVA trade mark 1799): water=5:95.After solution is cooling, particle diameter is less than to 300 objects alumina powder jointed according to mass ratio: aluminum oxide: water=15-25:100 pours above-mentioned solution into, stirs evenly as releasing agent.Releasing agent is coated with and is evenly overlying on mould or track surface with hairbrush or spray gun, air-dry.
(5) sintered and foamed: the powder mixing is evenly put into (or being laid on crawler belt) in mould, mould is put in retort furnace, speed with 5 DEG C/min is warming up to 400-500 DEG C, and insulation 30min, to remove the organism such as micro-moisture and PVA of glass absorption.Be warming up to 700-880 DEG C with the temperature rise rate of 15 DEG C/min again, insulation 5-30min foams.After sintering finishes, sample is slowly cooled to room temperature with stove.
(6) finished product processing: foamed glass is cut into desired shape and size with diamond saw; Or be broken into the block product of required size.
The key point of technique:
(A) calcium carbonate powder particle diameter used must approach with the meta particle diameter of glass powder, with the homogeneity of guaranteeing that raw material mixes, thus the pore homogeneity of raising foamed glass.
(B) lantern pane that many old technologies are produced contains more plumbous oxide, must before glass breaking, be rejected.In addition, the existence of transition metal ion can affect the color of foamed glass, and therefore the earth in scrap glass also must clean.
(C) ratio of components and blowing temperature all affect void content and the ultimate compression strength of foamed glass, must strict temperature homogeneity of proofreading and correct retort furnace.
(D) length of sapphire whisker is unsuitable oversize, otherwise is difficult to mix, and also affects pore homogeneity.
Embodiment carries out following example according to multicellular glass preparation method above
Embodiment 1: Alumina Fiber Volume Fraction is 1-8% multicellular glass preparation method, and embodiment is as follows:
Raw material: cullet powder 100-300 order
Calcium carbonate: 80-100 order
Sapphire whisker: diameter 15-30 micron, length 3-6mm
Polymer phosphate ammonium: 150-300 order
Ratio of components: cullet powder: calcium carbonate: sapphire whisker: polymer phosphate ammonium is listed in the table below:
Table 1 foamed glass raw material component percentage
Sample Cullet powder Calcium carbonate Sapphire whisker Polymer phosphate ammonium
1 94 4 1 1
2 93 4 2 1
3 92 4 3 1
4 91 4 4 1
5 90 4 5 1
6 89 4 6 1
8 87 4 8 1
Sintering temperature: 820 DEG C
Soaking time: 15min
Foamed glass is cut into desired shape and size with diamond saw, carry out pressure resistance, void content test, with its microscopic appearance of scanning electron microscopic observation.Result as shown in Figure 2, Figure 3, Figure 4.Sapphire whisker is not dissoluted, and embeds in walls compared with staple fibre, cannot meet the curvature of bubble individually and partly stretch out compared with long fiber.
Embodiment 2:
Mullite fiber content is that the preparation of 2-6% multicellular glass is similar to embodiment 1, and concrete batching is as follows:
Raw material: cullet powder 100-300 order
Calcium carbonate: 80-100 order
Sapphire whisker: diameter 15-30 micron, length 3-6mm
Polymer phosphate ammonium: 150-300 order
Ratio of components: cullet powder: calcium carbonate: mullite fiber: polymer phosphate ammonium=89-93:4:2-6:1
Sintering temperature: 820 DEG C
Soaking time: 20min
Foamed glass is cut into desired shape and size with diamond saw, carry out pressure resistance, void content test, with its microscopic appearance of scanning electron microscopic observation.The ultimate compression strength of sample is respectively: 1.61,1.90,2.12,2.62 and 3.01MPa.The result that pore homogeneity, pore size distribution, the porosity of holding one's breath and ventilate rate and sapphire whisker strengthen is basically identical.
Embodiment 3: prepare the fiber forced foamed glass of high silica glass and select silicon-dioxide quality content higher than 95, diameter is the glass fibre of 10-18 micron, is cut into the staple fibre that length is 4-10mm.Concrete raw material parameter and ratio of components are as follows:
Raw material: cullet powder 100-300 order
Calcium carbonate: 80-100 order
High silica glass fiber: diameter 10-18 micron, length 4-10mm
Polymer phosphate ammonium: 150-300 order
Ratio of components: cullet powder: calcium carbonate: high silica glass fiber: polymer phosphate ammonium ratio of components is as following table
The fiber forced foamed preparing glass charge mass percent of table 2 high silica glass
Sample Cullet powder Calcium carbonate High silica glass fiber Polymer phosphate ammonium
2 94 4 2 1
3 93 4 3 1
4 92 4 4 1
5 91 4 5 1
6 90 4 6 1
Sintering temperature: 820 DEG C
Soaking time: 10min
Foamed glass is cut into desired shape and size with diamond saw.
Alkalinity in scrap glass is higher, and long-time heating can be melted high silica glass fiber, and therefore, foamed time can not be oversize.In addition, the fine interfacial level of scrap glass melt and high silica glass merges, the interface with scanning electron microscopic observation less than both.With measuring its ultimate compression strength, void content, pore size distribution etc. after the method cutting sample in embodiment 1.Result shows, its ultimate compression strength is a little more than first two method, distributes and reaches 1.84,2.21,2.43,2.82 and 3.36MPa.This may have benefited from high tenacity and the high-tensile of high silica glass fiber.Void content, pore size distribution etc. are basically identical with first two method.

Claims (2)

1. improve a preparation method for multicellular glass intensity, its feature comprises the steps:
(1) raw material: the scrap glass in use daily life is as raw material;
(2) raw material cleans and grinding: remove the impurity on scrap glass surface, and it is thoroughly air-dry; Be prepared into through pulverizing, ball-milling technology the powder that particle diameter is 1-150 micron again;
(3) whipping agent is that calcium carbonate (particle size range is 80-1500 order), surface-modifying agent are that trisodium phosphate (particle diameter is 80-300 order) toughener is: sapphire whisker or mullite fiber or high silica glass fiber, diameter is 10-50 micron, and length is 2-10mm.
(4) raw material mixes: the powder that cullet is worn into and whipping agent (calcium carbonate), toughener (sapphire whisker or mullite fiber or high silica glass fiber), surface-modifying agent (trisodium phosphate) are according to mass ratio: 88-96:2-8:1-8:1-2 mixes
(5) fire: the powder mixing is packed in the stainless steel mould that scribbles releasing agent (weight proportion is: particle diameter 300 object aluminium sesquioxides: polyvinyl alcohol: water=20:2:80) (trade mark 304, or 316L); After temperature (800-900 DEG C) sintering of setting, cooling, form high-strength foamed glass.
2. the preparation method who improves multicellular glass intensity according to the kind described in claims 1, is characterized in that described toughener (sapphire whisker or mullite fiber or high silica glass fiber), the 1-8% that content is total mass.Strengthen the ultimate compression strength of the foamed glass that posterior spiracle rate is 80-88% at 1.5-4.0MPa.
CN201410295691.2A 2014-06-26 2014-06-26 Preparation method of high-strength foam glass Pending CN104045239A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609734A (en) * 2015-02-11 2015-05-13 大连交通大学 Method for preparing porous material by use of eggshell and waste glass
CN105347686A (en) * 2015-10-28 2016-02-24 中国矿业大学 Preparation method of uniform closed-cell nano-added foam glass
CN108191249A (en) * 2018-02-28 2018-06-22 宁波革创新材料科技有限公司 A kind of strength energy-saving foam glass and preparation method thereof
CN108982561A (en) * 2018-08-03 2018-12-11 武汉科技大学 The preparation method of ferroalloy XRF analysis sheet glass based on demolding aids
CN108982563A (en) * 2018-08-03 2018-12-11 武汉科技大学 The preparation method of the XRF analysis sheet glass of demolding aids effect
CN109626834A (en) * 2019-01-15 2019-04-16 李豪 A kind of preparation method of energy saving and environment friendly composite foam glass
CN111320394A (en) * 2020-03-24 2020-06-23 安徽汇昌新材料有限公司 Preparation method of foam glass with high abrasion resistance

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CN102643013A (en) * 2012-04-28 2012-08-22 浙江德和绝热科技有限公司 Method of using waste glass fiber reinforced phenolic resin molding compound to produce foam glass
CN102994799A (en) * 2012-11-16 2013-03-27 河南科技大学 Copper-based self-lubricating composite material and preparation method thereof

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609734A (en) * 2015-02-11 2015-05-13 大连交通大学 Method for preparing porous material by use of eggshell and waste glass
CN105347686A (en) * 2015-10-28 2016-02-24 中国矿业大学 Preparation method of uniform closed-cell nano-added foam glass
CN105347686B (en) * 2015-10-28 2017-10-27 中国矿业大学 A kind of preparation method of uniform closed pore nanometer addition foam glass
CN108191249A (en) * 2018-02-28 2018-06-22 宁波革创新材料科技有限公司 A kind of strength energy-saving foam glass and preparation method thereof
CN108982561A (en) * 2018-08-03 2018-12-11 武汉科技大学 The preparation method of ferroalloy XRF analysis sheet glass based on demolding aids
CN108982563A (en) * 2018-08-03 2018-12-11 武汉科技大学 The preparation method of the XRF analysis sheet glass of demolding aids effect
CN108982563B (en) * 2018-08-03 2021-02-19 武汉科技大学 Method for preparing glass sheet for XRF analysis of release aid effect
CN108982561B (en) * 2018-08-03 2021-02-19 武汉科技大学 Preparation method of glass sheet for iron alloy XRF analysis based on demolding auxiliary agent
CN109626834A (en) * 2019-01-15 2019-04-16 李豪 A kind of preparation method of energy saving and environment friendly composite foam glass
CN111320394A (en) * 2020-03-24 2020-06-23 安徽汇昌新材料有限公司 Preparation method of foam glass with high abrasion resistance

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Application publication date: 20140917