CN104402232A - Low-density and high-strength borosilicate microcrystalline foam glass - Google Patents
Low-density and high-strength borosilicate microcrystalline foam glass Download PDFInfo
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- CN104402232A CN104402232A CN201410669727.9A CN201410669727A CN104402232A CN 104402232 A CN104402232 A CN 104402232A CN 201410669727 A CN201410669727 A CN 201410669727A CN 104402232 A CN104402232 A CN 104402232A
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Abstract
The invention discloses low-density and high-strength borosilicate microcrystalline foam glass, which comprises the following basic ingredients by mass percent: 55 to 65 percent of SiO2, 15 to 17 percent of Na2CO3, 15 to 17 percent of K2CO3, 3 to 5 percent of Al2O3, and 8 to 17 percent of H3BO3; in addition, 1 to 4 percent of a nucleation agent and 0.5 to 1 percent of a foaming agent are added to the basic ingredient for mixing; the foaming agent is carbon black; the nucleation agent adopts an arbitrary one of titanium dioxide, calcium fluoride or vanadium dioxide. The mixture is subjected to wet grinding for 3 hours; pulp is subjected to dry grinding for 3 hours after the pulp is dried; then the pulp is sieved through a 150-mesh standard sieve; finally, pulp is put into a furnace for burning at 775 DEG. The borosilicate microcrystalline foam glass has the characteristics of low density and high strength, and is simple in technology, low in cost and suitable for industrial production.
Description
Technical field
The present invention relates to a kind of ceramic, borosilicate crystallite foam glass being specifically related to a kind of low-density and high-strength and preparation method thereof.
Background technology
Multicellular glass is a kind of porous material of manual manufacture, because its inside is filled with countless small uniform connection or sealed porosity, so be a kind of heat insulating of good performance and sound absorbent material.But because the multicellular glass ubiquity supplied in the market the shortcoming that physical strength is low, thermal-shock resistance is poor, thus major part is used for the fields such as chemical industry, electric power, refrigeration, so be applicable to doing lagging material and being unfit to do materials for wall.At home, due to problems such as Technologies, multicellular glass is almost blank in the application of construction industry.
Devitrified glass, also known as glass-ceramic or sintered glass ceramics, is the polycrystalline solids obtained by glass controlling crystallizing.Because these product performance are remarkable, with low cost, handling ease, added value are high, so have very high practical value and commercial value.But because devitrified glass unit weight is large, in a large number for non-construction industry, and be mainly used as finishing material in construction industry.
In order to overcome multicellular glass and devitrified glass deficiency separately, in conjunction with both the advantage of performance, develop a kind of novel material-crystallite foam glass.Crystallite foam glass be a kind of glass body mutually in be uniform-distribution with lightweight, the Materials with High Strength of a large amount of micro-bubble and needle-like crystal.Owing to there is a large amount of pores in crystallite foam glass, so material unit weight reduces greatly, and pore great majority are not communicated with, mutually so material has the performance of lightweight, heat insulating.Physical strength is more much bigger than multicellular glass, and it not only has the performance of lagging material, but also has the feature of load-bearing material.The production technique of crystallite foam glass is fairly simple, and the basic material adopted is industrial residue, and cost is lower, to the less pollution of environment in production process, is conducive to environment protection.Crystallite foam glass combines that devitrified glass physical strength is high, the feature of use temperature wide ranges and multicellular glass light weight, is a kind of material of novel worth R and D.Nanjing University with cullet and flyash for main raw material, be that crystallite foam glass prepared by whipping agent with calcium carbonate, mix after the glass powder of grinding, flyash and nonmetalliferous ore are added water, when containing compression moulding when moisture, then dry, put into kiln to fire, then by the blank excision forming after firing.Its shortcoming is except glass powder and flyash, and also add nonmetalliferous ore, manufacturing cost is higher.Nonmetalliferous ore used has alkali feldspar, silica sand, soda ash and calcite.And have employed compression moulding, complex manufacturing technology.This patent does not adopt cullet and flyash to be the processing method of main raw material, but expects to test based on the mixing afterwards of use chemical pure raw material.
Summary of the invention
Object of the present invention, be overcome that the manufacturing cost of prior art is high, the shortcoming of complex manufacturing technology, choose reasonable Nucleating Agent, provides crystallite foam glass that a kind of technique is simple, physical strength is high, pore is even, volume density is little and preparation method thereof.
The present invention is achieved by following technical solution.
A kind of low-density and high-strength borosilicate crystallite foam glass, its raw material composition and mass percentage content thereof are SiO
255% ~ 65%, H
3bO
38% ~ 19%, Na
2cO
315% ~ 17%, K
2cO
33% ~ 5%, Al
2o
33% ~ 5%, on this basis, applied foam agent 0.5% ~ 1%, additional Nucleating Agent 1% ~ 4%;
Described whipping agent is carbon black;
Described Nucleating Agent is any one of titanium dioxide, Calcium Fluoride (Fluorspan) or Vanadium Pentoxide in FLAKES;
The preparation method of this low-density and high-strength borosilicate crystallite foam glass, step is as follows:
(1) by raw material composition and mass percentage content: SiO thereof
255% ~ 65%, H
3bO
38% ~ 17%, Na
2cO
315% ~ 17%, K
2cO
33% ~ 5%, Al
2o
33% ~ 5% prepares burden, on this basis, and applied foam agent 0.5% ~ 1%, Nucleating Agent 1% ~ 4%; Above-mentioned raw materials is put into ball grinder, according to raw material: alumina balls: the mass ratio of deionized water is 1:2:1.5 ball milling 3h, then slip is poured in pallet dry;
(2) dry grinded by step (1) dried compound, the dry grinding time is 3h, and the mass ratio of ball, material is 2:1;
(3) 150 mesh standard sieves crossed by the powder after step (2) being dry grinded;
(4) plumbago crucible put into by the powder after step (3) being sieved, and fires in 775 DEG C;
(5) goods that step (4) bakes are cut into regulation shape, make low-density and high-strength borosilicate crystallite foam glass.
The granularity of described whipping agent is 100 orders.
The temperature schedule of described step (4) is: less than 400 DEG C temperature rise rates are 3 DEG C/min, in 400 DEG C of insulation 30min; 400 DEG C to 725 DEG C temperature rise rates are 4 DEG C/min; 725 DEG C to 775 DEG C temperature rise rates are 2 DEG C/min, in 775 DEG C of insulation 30min.
Described step (5) cuts into the square bodily form of rule, and its standard shape is 2mm*2mm*2mm.
The void content of this crystallite foam glass is 70% ~ 90%, and ultimate compression strength is 3 ~ 5MPa, and density is 0.3 ~ 0.5g/cm
3.
Beneficial effect of the present invention: provide a kind of with low cost, technique is simple, pore is even, volume density is little, the borosilicate crystallite foam glass of high strength, the void content of this crystallite foam glass is 70% ~ 90%, ultimate compression strength is 3 ~ 5MPa, and density is 0.3 ~ 0.5g/cm
3.
Accompanying drawing explanation
Fig. 1 is the diffraction images that the borosilicate crystallite foam glass of the embodiment of the present invention 1 detects at X-ray diffractometer.
Embodiment
The present invention is raw materials used all adopts commercially available industrial chemicals, and specific embodiment is as follows.
Embodiment 1
Silica 1 2g is taken, boric acid 2.6g, sodium carbonate 3.4g with electronic balance, salt of wormwood 1g, aluminum oxide 1g, whipping agent carbon black 0.12g, Nucleating Agent titanium dioxide 0.4g, joining together in ball grinder, is medium with alumina globule and deionized water, according to raw material: alumina balls: the mass ratio of deionized water is 1:2:1.5, wet-milling 3h, slip is put into thermostatic drying chamber dry, then ball milling 3h, obtain the powder that particle is superfine.After powder being crossed 150 object standard sieves, be filled in plumbago crucible, be sure not overfilling, on a vibration table vibrating forming.After shaping, the plumbago crucible with admixtion sent in resistance furnace, fires in 775 DEG C; Temperature schedule is: less than 400 DEG C temperature rise rates are 3 DEG C/min; In 400 DEG C of insulation 30min; 400 DEG C to 725 DEG C temperature rise rates are 4 DEG C/min; 725 DEG C to 775 DEG C temperature rise rates are 2 DEG C/min; In 775 DEG C of insulation 30min.
The correlated performance test result of embodiment 1 is as follows:
Volume density is 0.480g/cm
3, void content is 77.14%, and ultimate compression strength is 4.40Mpa.
Fig. 1 is the diffraction images of the present embodiment, and wherein X-coordinate is diffraction angle 2 θ/(°), and ordinate zou is diffracted intensity.There is SiO as seen from Figure 1
2the appearance of crystal.
Embodiment 2
Silica 1 3g is taken, boric acid 2g, sodium carbonate 3.2g, salt of wormwood 0.9g, aluminum oxide 0.9g, whipping agent carbon black 0.2g, nucleator titanium dioxide 0.6g with electronic balance.Other processing method is identical with embodiment 1.
The correlated performance test result of embodiment 2 is as follows:
Volume density is 0.454g/cm
3, void content is 78.38%, and ultimate compression strength is 3.18Mpa.
Embodiment 3 ~ embodiment 6
Except the proportioning of component each in base furnish and the change of Nucleating Agent proportioning, all the other processing methodes are identical with executing example 1; Through same performance evaluation, property indices is excellent.
The raw material composition of various embodiments of the present invention and mass percentage content thereof refer to following table 1.
Table 1
Each raw material cited by the present invention can realize the present invention, and the bound value of various raw material, interval value can realize the present invention, illustrate no longer one by one.
Below be only the exemplary description that the present invention is done; should be noted that; when not departing from core of the present invention, any simple distortion, amendment or other those skilled in the art can not spend the equivalent replacement of creative work all to fall into protection scope of the present invention.
Claims (5)
1. a low-density and high-strength borosilicate crystallite foam glass, its raw material composition and mass percentage content thereof are SiO
255% ~ 65%, H
3bO
38% ~ 19%, Na
2cO
315% ~ 17%, K
2cO
33% ~ 5%, Al
2o
33% ~ 5%, on this basis, applied foam agent 0.5% ~ 1%, additional Nucleating Agent 1% ~ 4%;
Described whipping agent is carbon black;
Described Nucleating Agent is any one of titanium dioxide, Calcium Fluoride (Fluorspan) or Vanadium Pentoxide in FLAKES;
The preparation method of this low-density and high-strength borosilicate crystallite foam glass, step is as follows:
(1) by raw material composition and mass percentage content: SiO thereof
255% ~ 65%, H
3bO
38% ~ 17%, Na
2cO
315% ~ 17%, K
2cO
33% ~ 5%, Al
2o
33% ~ 5% prepares burden, on this basis, and applied foam agent 0.5% ~ 1%, Nucleating Agent 1% ~ 4%; Above-mentioned raw materials is put into ball grinder, according to raw material: alumina balls: the mass ratio of deionized water is 1:2:1.5 ball milling 3h, then slip is poured in pallet dry;
(2) dry grinded by step (1) dried compound, the dry grinding time is 3h, and the mass ratio of ball, material is 2:1;
(3) 150 mesh standard sieves crossed by the powder after step (2) being dry grinded;
(4) plumbago crucible put into by the powder after step (3) being sieved, and fires in 775 DEG C;
(5) goods that step (4) bakes are cut into regulation shape, make low-density and high-strength borosilicate crystallite foam glass.
2. a kind of low-density and high-strength borosilicate crystallite foam glass according to claim 1, is characterized in that, the granularity of described whipping agent is 100 orders.
3. a kind of low-density and high-strength borosilicate crystallite foam glass according to claim 1, it is characterized in that, the temperature schedule of described step (4) is: less than 400 DEG C temperature rise rates are 3 DEG C/min, in 400 DEG C of insulation 30min; 400 DEG C to 725 DEG C temperature rise rates are 4 DEG C/min; 725 DEG C to 775 DEG C temperature rise rates are 2 DEG C/min, in 775 DEG C of insulation 30min.
4. a kind of low-density and high-strength borosilicate crystallite foam glass according to claim 1, is characterized in that, the regulation shape that described step (5) cuts into, and is the square bodily form of the rule of 2mm*2mm*2mm.
5. a kind of low-density and high-strength borosilicate crystallite foam glass according to claim 1, it is characterized in that, the void content of this crystallite foam glass is 70% ~ 90%, and ultimate compression strength is 3 ~ 5MPa, and density is 0.3 ~ 0.5g/cm
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669727.9A CN104402232A (en) | 2014-11-20 | 2014-11-20 | Low-density and high-strength borosilicate microcrystalline foam glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410669727.9A CN104402232A (en) | 2014-11-20 | 2014-11-20 | Low-density and high-strength borosilicate microcrystalline foam glass |
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| Publication Number | Publication Date |
|---|---|
| CN104402232A true CN104402232A (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410669727.9A Pending CN104402232A (en) | 2014-11-20 | 2014-11-20 | Low-density and high-strength borosilicate microcrystalline foam glass |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010565A (en) * | 2020-09-10 | 2020-12-01 | 海能发防腐保温工程有限责任公司 | High-strength foam glass and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100003920A (en) * | 2008-07-02 | 2010-01-12 | 주식회사 테크팩홈솔루션 | Foamed glass having highstrength property and method of producing the same |
| CN103288353A (en) * | 2013-05-23 | 2013-09-11 | 天津大学 | Borosilicate microcrystalline foam glass with low density and high strength |
| CN103408225A (en) * | 2013-05-23 | 2013-11-27 | 天津大学 | Borosilicate foam glass applied to artificial floating island |
-
2014
- 2014-11-20 CN CN201410669727.9A patent/CN104402232A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100003920A (en) * | 2008-07-02 | 2010-01-12 | 주식회사 테크팩홈솔루션 | Foamed glass having highstrength property and method of producing the same |
| CN103288353A (en) * | 2013-05-23 | 2013-09-11 | 天津大学 | Borosilicate microcrystalline foam glass with low density and high strength |
| CN103408225A (en) * | 2013-05-23 | 2013-11-27 | 天津大学 | Borosilicate foam glass applied to artificial floating island |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112010565A (en) * | 2020-09-10 | 2020-12-01 | 海能发防腐保温工程有限责任公司 | High-strength foam glass and preparation method and application thereof |
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Application publication date: 20150311 |