CN1045196C - High-temp. heat-insulated material - Google Patents

High-temp. heat-insulated material Download PDF

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Publication number
CN1045196C
CN1045196C CN94102549A CN94102549A CN1045196C CN 1045196 C CN1045196 C CN 1045196C CN 94102549 A CN94102549 A CN 94102549A CN 94102549 A CN94102549 A CN 94102549A CN 1045196 C CN1045196 C CN 1045196C
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China
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heat
insulating material
temperature heat
water glass
present
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Expired - Fee Related
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CN94102549A
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CN1108630A (en
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王旭
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/06—Aluminous cements

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Building Environments (AREA)
  • Sealing Material Composition (AREA)

Abstract

The present invention relates to a high-temperature heat-insulating material which comprises the components: 31.0 wt% to 73.5 wt% of meerschaum velour, 21.9 wt% to 6.4 wt% of high-quality low calcium aluminate cement or alumine cement and inorganic adhesives as the rest, wherein the inorganic adhesives are selected from one of water glass, MgCl2, phosphoric acid and aluminium sulfate solution, the heat conducting coefficient of the high-temperature heat-insulating material is from 0.2 to 0.4 W/m. k at 1100 DEG C, the compression strength is from 3.0 to 7.5MPa at normal temperature, the volume weight is from 0.92 to 1.38 g/cm<3>, and the present invention also has good mechanical strength, heat stability and rapid cooling and heating impact resistance. The high-temperature heat-insulating material can be directly coated on engineering facilities needing naked flame prevention, meets the requirement of integral gapless construction, and can be made into different products in different sizes and shapes without being sintered.

Description

New type high temperature heat-insulation and heat-preservation material
The present invention relates to a kind of new type high temperature heat-insulation and heat-preservation material, or rather, the present invention relates to the sepiolite cashmere is main raw, and adds the high-temperature heat insulation heat insulating material of low calcium-aluminate cement (or luminite cement) of high-quality and inorganic adhesive.
As everyone knows, the heat-insulation and heat-preservation material category that is applied to industry at present is various, proportioning raw materials has nothing in common with each other, and its performance difference is very big, according to " refractory materials application manual " (being published in September, 92 by metallurgical industry press) P405-P444 record, lightweight refractory is good with the hollow alumina products performance, this material volume density is low, has good mechanical intensity, and use temperature is higher than 1200 ℃, but these goods must burn till through high temperature kiln, are difficult to satisfy big area or integral seamless crack construction requirement; Other lagging material (as diatomite, asbestos lagging material), refractory fibre and refractory fibre product, though thermal conductivity is low, mechanical strength is also low, only 700-800 ℃ of use temperature can not be used for anti-naked light job facilities; The inventor is disclosed a kind of high-temperature heat insulation heat insulating material in the patent of invention CN92102059.7 of application on April 2nd, 92, its over-all properties is better than above-mentioned materials, and can satisfy seamless construction requirement, but the mechanical strength of this material under low temperature and high temperature is still undesirable, its range of application is restricted, be the more perfect desirable heat-insulation and heat-preservation material of development performance, the inventor has done persevering endeavors.
The object of the invention is to provide a kind of new type high temperature heat-insulation and heat-preservation material, this material thermal conductivity is low, the cold crushing strength height, volume density is little, still has good mechanical intensity being higher than under 1200 ℃ of temperature, it can directly be applied to must the job facilities of anti-naked light on, satisfy integral seamless crack construction requirement, and need not around knot promptly make vary in size, different goods, if adjust prescription, can also be used as sealing material.
A kind of new type high temperature heat-insulation and heat-preservation material of the present invention is characterized in that each set of dispense than by weight is: sepiolite cashmere 31.0-73.5%, and high-quality is hanged down calcium-aluminate cement 21.9-6.4%, and surplus is an inorganic adhesive.This inorganic adhesive is selected from water glass, MgCl 2Solution, phosphoric acid, alum liquor a kind of, the also available luminite cement of above-mentioned low calcium-aluminate cement replaces.
High-temperature heat insulation heat insulating material production technique of the present invention is simple, sepiolite is become velvet-like through the ore dressing pretreatment post-treatment, add low calcium-aluminate cement (or luminite cement) of high-quality and inorganic adhesive by proportioning, through stirring, moulding, maintenance (natural air drying or use the loft drier drying) 1-3 days, get product.
Material of the present invention is a main raw material with the sepiolite cashmere, and sepiolite cashmere is processed by sepiolite, the high fibrous magnesium silicate clay mineral that sepiolite is a kind of white, light weight, can bubble through the water column, and its chemical formula is Mg 8[Si 12O 30] (OH) 412H 2O, its adsorptivity is strong, and specific surface is big, shrinking percentage is low, plasticity-is good, glossy, and has good thermostability and insulating property.
The low calcium-aluminate cement (or luminite cement) of high-quality is a kind of gelinite, has good thermostability, wear-resisting, fire-resistant and slag resistance, has half elasticity after the drying, can cushion stress and strain, increases the mechanical strength of material.
The inorganic adhesive that adds in the material of the present invention all is the solution form, and they not only have the setting accelerator effect, can also regulate, improve the sepiolite cashmere performance, increases the mechanical strength of material at normal temperatures.When preparing material of the present invention, can select different tackiness agents for use according to use properties requirement and use technology condition, for example: be used for the high-temperature heat insulation heat insulating material of anti-naked light job facilities in the open, select for use water glass to make tackiness agent, be used for indoor anti-naked light job facilities, select MgCl for use 2(bittern) solution is made tackiness agent.Water glass claims water glass again, and its chemical formula is Na 2OnSiO 2XH 2O, the water content of water glass directly influences its viscosity, and general water glass proportion is 1.4-1.5g/cm 3, the proportion conference reduces the material use temperature, makes the water glass specific gravity control at 1.2g/cm by increasing water content among the present invention 3Below.
Below will the invention will be further described by embodiment.
Embodiment 1:
Each set of dispense is as follows than by weight:
Sepiolite cashmere: 70%
High-quality is hanged down calcium-aluminate cement (or luminite cement): 9%
Water glass (1.2g/cm 3): 21%
Sepiolite is become velvet-like through the ore dressing pretreatment post-treatment, add low calcium-aluminate cement (or luminite cement) of high-quality and water glass,, get product through stirring, moulding, maintenance (natural air drying or use the loft drier drying) 1-3 days by proportioning.
This material salient features test result is as shown in table 1 below.
Embodiment 2:
Each set of dispense is as follows than by weight:
Sepiolite cashmere: 37%
High-quality is hanged down calcium-aluminate cement (or luminite cement): 20%
MgCl solution (proportion 1.5g/cm 3): 43%
Make finished product by aforementioned technology, this material key property test result is as shown in table 1.
Embodiment 3:
Each set of dispense is as follows than (by weight):
Sepiolite cashmere: 58%
High-quality is hanged down calcium-aluminate cement: 6.4%
Phosphoric acid solution (proportion 1.25g/cm 3): 35.6%
Make finished product by above-mentioned technology.
Embodiment 4:
Each set of dispense is as follows than (by weight):
Sepiolite cashmere: 69.2%
High-quality is hanged down calcium-aluminate cement: 7.6%
Alum liquor (proportion 1.25g/cm 3): 23.2%
Make finished product by above-mentioned technology.
Table 1
The salient features of material of the present invention and the described material of CN92102059.7 application for a patent for invention and existing heat-insulation and heat-preservation material relatively
Performance Material of the present invention The described material of CN92102059.7 Existing heat-insulation and heat-preservation material (is example with the hollow alumina products)
Tackiness agent is a water glass Tackiness agent is MgCl 2Solution I level product II level product
Volume density g/cm 3(being lower than) 1.38 0.88- 0.92 1.28 1.2 1.4
Cold crushing strength Mpa (being higher than) 7.0 3.6 2.7 3 10
Thermal conductivity W/ (m 2K) hot side is 1100 ℃ 0.37 0.2 0.47 0.93 1.04
Anti-naked light use temperature (being higher than) 1200℃ 1200℃ 1200℃ 1200℃ 1200℃
Be not difficult to find out that by last table the over-all properties of material of the present invention obviously is better than existing heat-insulation and heat-preservation material, compares with the described material of CN92102059.7, because the present invention has done bigger change on prescription, makes its performance more perfect, thereby Application Areas enlarges.
In view of mechanics of materials intensity of the present invention big, thermal conductivity is low, again can be anti-oxidant, corrosion-resistant, insulation, sound insulation, waterproof, antifreeze, bright and clean attractive in appearance, nonpoisonous and tasteless, can be used for seamless site operation, and need not the goods that sintering can be made size, shape, varies in color and have embossing pattern.If change the inorganic adhesive ratio in the prescription, promptly can be used as sealing material.At metallurgy, machinery, electronics, petrochemical complex, building, thermal meter and military industry field extensive use is arranged all.

Claims (1)

1. new type high temperature heat-insulation and heat-preservation material is characterized in that each set of dispense than by weight is: sepiolite cashmere 31.0-73.5%, and high-quality is hanged down calcium-aluminate cement 21.9-6.4%, and surplus is water glass, MgCl 2A kind of in the solution adds water and makes the specific gravity control of water glass at 1.2g/cm in the wherein said water glass 3Below.
CN94102549A 1994-03-18 1994-03-18 High-temp. heat-insulated material Expired - Fee Related CN1045196C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN94102549A CN1045196C (en) 1994-03-18 1994-03-18 High-temp. heat-insulated material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN94102549A CN1045196C (en) 1994-03-18 1994-03-18 High-temp. heat-insulated material

Publications (2)

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CN1108630A CN1108630A (en) 1995-09-20
CN1045196C true CN1045196C (en) 1999-09-22

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1052708C (en) * 1995-10-10 2000-05-24 晋永昶 Building decorating board
CN1118527C (en) * 2000-10-24 2003-08-20 华东理工大学 Self-curing inorganic heat-conducting daub
CN101760176B (en) * 2010-01-22 2011-02-16 侯永忠 Coke oven sealant prepared by fly ash and preparation method and application thereof
CN102936123B (en) * 2011-08-15 2016-05-18 中国航天科工集团第六研究院四十六所 Fire-retardant heat-insulation material and preparation method
CN106431170A (en) * 2016-09-28 2017-02-22 河南欧亚保温材料有限公司 Preparation method of thermal-insulating and fire-proof bars
CN111018454A (en) * 2019-12-12 2020-04-17 郴州市耐普电源有限公司 Heat preservation agent capable of prolonging dropping time and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87103592A (en) * 1987-05-13 1987-12-09 黑龙江省低温建筑科学研究所 Pearlite adhesive
CN1076955A (en) * 1992-04-02 1993-10-06 王旭 High-temperature heat insulation heat insulating material
CN1103100A (en) * 1993-11-24 1995-05-31 彭吕元 Sepiolite heat insulating, water-proof stop leakage paste and use

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN87103592A (en) * 1987-05-13 1987-12-09 黑龙江省低温建筑科学研究所 Pearlite adhesive
CN1076955A (en) * 1992-04-02 1993-10-06 王旭 High-temperature heat insulation heat insulating material
CN1103100A (en) * 1993-11-24 1995-05-31 彭吕元 Sepiolite heat insulating, water-proof stop leakage paste and use

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