CN104926168B - A kind of hydrophobic expansion pearlite and preparation method thereof - Google Patents
A kind of hydrophobic expansion pearlite and preparation method thereof Download PDFInfo
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Abstract
The invention provides a kind of hydrophobic expansion pearlite and its method for preparing hydrophobic expansion pearlite, this method comprises the following steps：（1）Perlite ore is classified, screening expansion multiple K0 is more than 10 perlite；（2）Sub-sieve is carried out to the perlite after classification；（3）After sub-sieve in 100 DEG C~600 DEG C preheating furnaces pre- heat dehydration；（4）Secondary grading, screening expansion multiple K are carried out after pre- heat dehydration0It is less than the 2, perlite with glassy lustre or resinous luster more than 20, index of refraction, obtains density less than 80kg/m3Expanded perlite；（5）Water-proofing treatment then is carried out to expanded perlite, hydrophobic expansion pearlite is obtained.The method that the present invention is provided is simple to operate, is easy to promote, and the hydrophobic expansion pearlite hydrophobic effect obtained using the method for the present invention is good, and its 24h water absorption rate is controlled below 8.3%, can better meet the high performance requirements of existing building material.
Description
Technical field
The present invention relates to building material technical field, and in particular to a kind of hydrophobic expansion pearlite and preparation method thereof.
Background technology
With the rapid development of the national economy, the continuous improvement of living standards of the people, the consumption to the energy is also increasing,
In the total energy consumption of China, building energy consumption is one of main aspect of China's energy consumption.According to relevant report, China increases room newly to root every year
Largely built in estate building coverage for highly energy-consuming, existing building nearly 90% is built for high energy consumption.The national annual power consumption of building
More than the 20% of China's generated energy is accounted for, unit construction area power consumption is the several times of developed country.Wherein main cause is China's building
Heat insulation function imperfection and correlation technique fall behind what is caused relatively.
For energy-saving and emission-reduction, reduction building energy consumption, current most common method is to install heat insulation layer additional in exterior wall.
Existing insulation material uses low-density loose porous material mostly, because the air of internal filling and closing is to pair of heat
Very big barrier effect is played in stream and conduction, so as to realize the effect of insulation.
The mainly organic insulation material that China uses at this stage, such as：It is polystyrene block EPS, extruded polystyrene board XPS, poly-
Benzene particle, spraying polyurethane SPU and polyurethane PU hard bubble.Organic insulation material has lightweight, good effect of heat insulation, applied
The characteristics of work is easy.But existing organic insulation material also has its unavoidable shortcoming：It is inflammable, although existing relevant art is carried
The fire protecting performance of high organic material reaches flame retardant effect, but in the case where the intensity of a fire is larger, flame retardant treatment material is remained to by point
Combustion, some materials are also possible to produce a large amount of toxic smog, and escape personnel dies like a rat or damped possibility when increase fire occurs
Property.Reduction is also possible to increase its risk come off mechanical property rapidly after other organic material is heated in a fire, and causing need not
The loss wanted.And such shortcoming is just not present in inorganic heat insulation material, its fire resistance rating is A1 grades, do not burn, not smoke and
Heat endurance is good, and intensity will not be also lost because of high temperature.
Therefore, the overall situation from building energy conservation and people life property safety, are substituted with outstanding inorganic heat insulation material
The problem of organic insulation material turns into extremely urgent.
Inorganic heat insulation material is based on rock wool, expanded perlite, and they have acid and alkali-resistance, corrosion-resistant, stability high, construction
Simplicity, it is applied widely, it is adaptable to the insulation of various wall basic units material and variously-shaped complicated wall, it is most important that it is prevented
Fiery flame-retarding is good, can be widely used for intensive house, public building, large-scale public place, combustible and explosive area etc. other
Strict place is required to fire-protection rating.It is resistance to compression, anti-however, the insulation of existing inorganic heat insulation material and hydrophobicity performance are relatively poor
Roll over intensity not high, constrain its development.
Therefore, research and develop a kind of replacement organic insulation material and the good non-ignitable insulation material of water resistance turns into current
The practical problem of urgent need to resolve.
The content of the invention
The problem of in order to solve insulation material water resistance, it is an object of the invention to provide a kind of new hydrophobic expansion pearlite
And preparation method thereof.
The concrete scheme of the present invention is as follows：
A kind of method for preparing hydrophobic expansion pearlite, it comprises the following steps：
（1）Perlite ore is classified, screening expansion multiple K0Perlite more than 10；
（2）Sub-sieve is carried out to the perlite after classification；
（3）After sub-sieve in 100 DEG C~600 DEG C preheating furnaces pre- heat dehydration；
（4）Secondary grading, screening expansion multiple K are carried out after pre- heat dehydration0It is less than 2, with glass more than 20, index of refraction
The perlite of glass gloss or resinous luster, obtains density less than 80kg/m3Expanded perlite；
（5）Water-proofing treatment then is carried out to expanded perlite, hydrophobic expansion pearlite is obtained.
It is preferred that, the screen number of the sub-sieve is less than 20 mesh, more preferably 5 mesh.
It is preferred that, waterproofing agent used is the waterproofing agent of organic silicon in the water-proofing treatment.
It is preferred that, the waterproofing agent also includes dilution before handling expanded perlite and handled, the diluent
For water and gel, wherein, the gel accounts for the 1~5% of diluent weight, and the multiple of dilution is 1~20 times.
It is preferred that, the weight part ratio 0.5~8 of the waterproofing agent of organic silicon and expanded perlite after the dilution:1.
Further, the invention provides hydrophobic expansion pearlite prepared by the above method.
Beneficial effects of the present invention are as follows：
The method that the present invention is provided is simple to operate, is easy to promote, the hydrophobic expansion pearl obtained using the method for the present invention
Rock hydrophobic effect is good, and its 24h water absorption rate is controlled below 8.3%, and the high-performance that can better meet existing building material will
Ask.
Embodiment
The concrete technical scheme of the present invention is specifically described below in conjunction with specific embodiment.
The invention provides a kind of method for preparing hydrophobic expansion pearlite, it comprises the following steps：
（1）Perlite ore is classified, screening expansion multiple K0Perlite more than 10, the perlite take off glass it is not serious,
Containing crystalline material, accidental fluxion structure；
（2）Sub-sieve is carried out to the perlite after classification；The screen number of the sub-sieve is less than 20 mesh, more preferably 5 mesh.
（3）After sub-sieve in 100 DEG C~600 DEG C preheating furnaces pre- heat dehydration；
（4）Secondary grading, screening expansion multiple K are carried out after pre- heat dehydration0It is less than 2, with glass more than 20, index of refraction
The perlite of gloss or resinous luster, obtains density less than 80kg/m3Expanded perlite；
（5）Water-proofing treatment then is carried out to expanded perlite, hydrophobic expansion pearlite is obtained.
Wherein, waterproofing agent used is the waterproofing agent of organic silicon in the water-proofing treatment.The waterproofing agent of the organic silicon
It is a kind of silane based powders water-repellent additive, the product not only shows high hydrophobic efficiency, and with quickly being mixed and stirred with mortar
Uniform ability.Its silane under alkaline environment and cement hydrated product formation highly lasting combination so as to providing long-term
Hydrophobicity performance.
Heretofore described waterproofing agent also includes dilution before handling expanded perlite and handled, the diluent
For water and gel, wherein, the gel accounts for the 1~5% of diluent weight, and the multiple of dilution is 1~20 times.It is preferred that, it is described
Gel rubber material is the liquid gel that in the market is arbitrarily commercially available, such as ferric hydroxide colloid.
It is preferred that, the weight part ratio of the waterproofing agent of organic silicon and expanded perlite is 0.5~8 after the dilution:1.
In the present embodiment, 4 kinds of different proportion waterproofing agents have been prepared（Hydrophober）Expanded perlite is surface-treated, such as
Shown in table 1.Processing procedure is as follows, in proportion by binder materials and waterproofing agent, water mix it is uniform after, by mixed liquor and expanded pearlite
Rock carries out mix, and duration of mixing will be controlled, and the time is too short, and the waterproof material being wrapped on perlite is few, does not reach waterproof and hates
Water effect, overlong time, some perlites are damaged, influence the performance of product.We are tried the waterproofing agent to four kinds of formulas
Test, result of the test is shown in Table 2.
The processing of 1 four kinds of waterproofing agents of table
The perlite hydrophobic effect result of the test of table 2
As seen from Table 2,24 hours water absorption rates of untreated expanded perlite have reached 44.3%, hating after treatment
The water absorption rate of water expanded perlite is 8.3%~24.4%, wherein best one group is A groups, its 24h water absorption rates only have 8.3%,
Therefore, the research behind us employs the waterproofing agent of A formulas, the high-performance that can better meet existing building material will
Ask.
Described above is only the preferred embodiment of the present invention, it should be pointed out that these embodiments are merely to illustrate this
Invention rather than limitation the scope of the present invention, moreover, after present disclosure has been read, relevant technical staff in the field
Various changes or modification can be made to the present invention, these equivalent form of values equally fall into the application appended claims and limited
Scope.
Claims (4)
1. a kind of method for preparing hydrophobic expansion pearlite, it is characterised in that it comprises the following steps：
（1）Perlite ore is classified, screening expansion multiple K0Perlite more than 10；
（2）Sub-sieve is carried out to the perlite after classification；
（3）After sub-sieve in 100 DEG C ~ 600 DEG C preheating furnaces pre- heat dehydration；
（4）Secondary grading, screening expansion multiple K are carried out after pre- heat dehydration0Be less than 2 more than 20, index of refraction, with glassy lustre or
The perlite of resinous luster, obtains density less than 80kg/m3Expanded perlite；
（5）Water-proofing treatment then is carried out to expanded perlite, hydrophobic expansion pearlite is obtained；
Waterproofing agent used is the waterproofing agent of organic silicon in the water-proofing treatment；
The waterproofing agent before handling expanded perlite also include dilution handle, diluent be water and gel, it is described
Gel is liquid gel, wherein, the gel accounts for the 1 ~ 5% of diluent weight, and the multiple of dilution is 1 ~ 20 times.
2. according to the method described in claim 1, it is characterised in that the screen number of the sub-sieve is less than 20 mesh.
3. according to the method described in claim 1, it is characterised in that the waterproofing agent of organic silicon and expanded perlite after dilution
Weight part ratio is 0.5 ~ 8:1.
4. hydrophobic expansion pearlite prepared by claims 1 to 3 any one methods described.
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| CN105948636B (en) * | 2016-04-28 | 2018-03-09 | 中晶工程材料（信阳）有限公司 | A kind of enhanced modified expanded perlite insulation board of polyacrylate and its production method |
| CN107281782B (en) * | 2017-07-16 | 2019-12-17 | 兰州理工大学 | Method for hydrophobically modifying expanded perlite |
| CN108298850A (en) * | 2018-04-10 | 2018-07-20 | 佛山市三水万瑞达环保科技有限公司 | A kind of preparation method for the expanded perlite that surface hydrophobicity is modified |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1579985A (en) * | 2004-05-20 | 2005-02-16 | 上海宝能轻质材料有限公司 | Hydrophobic expanded pearlite for low temperature and its preparing method |
| CN1583642A (en) * | 2004-06-03 | 2005-02-23 | 上海宝能轻质材料有限公司 | Manufacturing process for low-temperature hydrophobic expanded pearlite |
| CN102898113A (en) * | 2012-10-22 | 2013-01-30 | 北京工业大学 | Hydrophobic expanded perlite heat insulating product and preparation method thereof |
| CN103304174A (en) * | 2013-06-25 | 2013-09-18 | 大连铭源全建材有限公司 | Production method of expanded perlite |
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| KR101350423B1 (en) * | 2012-03-12 | 2014-01-16 | 주식회사 정우소재 | Rapid Setting Cement Adhesive for Reinforcing Mesh Adhering on ALC Panel |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1579985A (en) * | 2004-05-20 | 2005-02-16 | 上海宝能轻质材料有限公司 | Hydrophobic expanded pearlite for low temperature and its preparing method |
| CN1583642A (en) * | 2004-06-03 | 2005-02-23 | 上海宝能轻质材料有限公司 | Manufacturing process for low-temperature hydrophobic expanded pearlite |
| CN102898113A (en) * | 2012-10-22 | 2013-01-30 | 北京工业大学 | Hydrophobic expanded perlite heat insulating product and preparation method thereof |
| CN103304174A (en) * | 2013-06-25 | 2013-09-18 | 大连铭源全建材有限公司 | Production method of expanded perlite |
Non-Patent Citations (2)
| Title |
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| 憎水型膨胀珍珠岩制备过程中吸水率影响因素探讨;孙顺杰等;《化学建材》;20080920;第24卷(第5期);第32-33页 * |
| 憎水型膨胀珍珠岩的制备及正交试验研究;马康等;《新型建筑材料》;20130225(第02期);第65-67页 * |
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Effective date of registration: 20180531 Address after: 222100 west side of Ocean Avenue, Ganyu Marine Economic Development Zone, Lianyungang, Jiangsu Patentee after: Huayi Building Materials Technology Co. Ltd. Address before: 222100 Jiangsu province Lianyungang city Ganyu County Gan Ma Town Da Gao Dian village. Co-patentee before: NENJIANG PERLITE INSULATION CO., LTD. Patentee before: LIANYUNGANG PERLITE INSULATION CO., LTD. |