CN101337780B - Modified expanded perlite and surface modification processing method thereof - Google Patents
Modified expanded perlite and surface modification processing method thereof Download PDFInfo
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- CN101337780B CN101337780B CN2008101378214A CN200810137821A CN101337780B CN 101337780 B CN101337780 B CN 101337780B CN 2008101378214 A CN2008101378214 A CN 2008101378214A CN 200810137821 A CN200810137821 A CN 200810137821A CN 101337780 B CN101337780 B CN 101337780B
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- pearlstone
- expanded perlite
- inorganic fibre
- modified expanded
- macromolecular material
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- 235000019362 perlite Nutrition 0.000 title claims abstract description 49
- 239000010451 perlite Substances 0.000 title claims abstract description 49
- 230000004048 modification Effects 0.000 title description 8
- 238000012986 modification Methods 0.000 title description 8
- 238000003672 processing method Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims abstract description 61
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 33
- 239000000835 fiber Substances 0.000 claims description 74
- 238000003756 stirring Methods 0.000 claims description 16
- 239000004593 Epoxy Substances 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 15
- 239000003365 glass fiber Substances 0.000 claims description 15
- 239000004925 Acrylic resin Substances 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229920000178 Acrylic resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 9
- 229920005989 resin Polymers 0.000 claims description 9
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000004816 latex Substances 0.000 claims description 5
- 229920000126 latex Polymers 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 15
- 239000008187 granular material Substances 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 9
- 239000011449 brick Substances 0.000 abstract description 7
- 239000012784 inorganic fiber Substances 0.000 abstract description 2
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 9
- 239000000839 emulsion Substances 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 7
- 239000003822 epoxy resin Substances 0.000 description 6
- 229920000647 polyepoxide Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 235000019353 potassium silicate Nutrition 0.000 description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 241000264877 Hippospongia communis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004523 agglutinating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1033—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1003—Non-compositional aspects of the coating or impregnation
- C04B20/1014—Coating or impregnating materials characterised by the shape, e.g. fibrous materials
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1018—Coating or impregnating with organic materials
- C04B20/1029—Macromolecular compounds
- C04B20/1037—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a method for modifying and processing expanded perlite and modified expanded perlite got by adopting the method. The modified expanded perlite belongs to the technical field of a heat insulating material used for buildings. The modified expanded perlite comprises an inner expanded perlite layer and a shell wrapping the expanded perlite. The shell is attached with inorganic fiber and is made of a hydrophobic high molecular material. The cohesive strength of the modified expanded perlite granule and an inorganic gelled material is high; the strength of insulating bricks made of the modified expanded perlite is high with high thermal insulation.
Description
Technical field
The present invention relates to a kind of method that the pearlstone modification is handled with and the modified expanded perlite that obtains, belong to the technical field of lagging material for building.
Background technology
Expanded perlite product is because cheap, has again that unharmful substance discharges in fire-resistant, anticorrosive and the use, is easy to characteristics such as harmless treatment when removing, thereby be one of inanimate matter lagging material of domestic usage quantity maximum.The pearlstone raw material is to be made it produce expanded and obtain through 850 ℃-1050 ℃ heat fast by the natural peral rock and ore.Below 50pm, the volume density of expanded particle itself is generally less than 150kg/m to the pore dimension of expanded perlite granule inside mostly
3, void content is more than 90%.Therefore expanded perlite granule itself is at normal temperature or at high temperature lower thermal conductivity to be arranged all.Present expansion pearlite thermal insulation product (sheet material, shell or other shape material) is many to combine expanded perlite granule as matrix material with cement or water glass.Pearlstone is a hydrophilic material, and it absorbs water easily and causes heat transfer coefficient to improve greatly, is unfavorable for insulation.Therefore, prior art has been taked the modification processing to common pearlstone, adopts hydrophober that pearlstone is handled usually and makes it become hydrophobic nature; Prior art is taked multiple method of modifying in addition, but aforesaid method finally make expanded perlite granule with cement or water glass in conjunction with the time affinity relatively poor, the cohesiveness of expanded perlite granule and other material reduces, cause the intensity of final gained heat-preserving wall or insulating brick low, at this moment often need to add netted enhancement Layer or stiffening web.
Prior art is for the existing understanding preferably of the properties-correcting agent of pearlstone, for example Luo Yi etc. inquires into (New Building Materials in the hydrophobic modified method and the principle of building thermal insulation material, 2007,34 (12): 48-49) mention the surface energy that adopts carboxylic acid can reduce pearlstone in the literary composition, chemical bond absorption has taken place in the surface of carboxylic acid and pearlstone.Prior art is to being familiar with preferably as the material of pearlstone properties-correcting agent is existing.Simultaneously, prior art has also been taked the method modified expanded perlite of high temperature vitreous, makes it possess the low water absorbable energy.
Publication number is that the Chinese patent of CN101139180 discloses a kind of polymer modified expanded perlite and preparation method thereof, it is a kind of polymer modified expanded perlite particle of taking polymer modifiers to carry out surface parcel modification, its preparation method is: pearlstone is sent in the rotating cylinder, polymer modifiers is sent into the rotating cylinder with 30-150 degree centigrade hot blast from another inlet of rotating cylinder in the mode of spraying, the surface of the pearlstone one layer of polymeric film that promptly has been wrapped, it has improved the intensity of pearlstone itself, and it has reached hydrophobic performance simultaneously.
But the expanded perlite granule in the technique scheme still with inorganic coagulation material such as cement, the cohesive strength of water glass etc. is lower.
Summary of the invention
The objective of the invention is at the cohesive strength of modified expanded perlite particle and inorganic coagulation material in the prior art lowlyer, a kind of and higher modified expanded perlite of inorganic coagulation material cohesive strength is provided.
Another object of the present invention provides self structure intensity height, not breakable modified expanded perlite particle in transportation.
The present invention also provides a kind of properties-correcting agent that is used to prepare above-mentioned modified expanded perlite.
The present invention also provides a kind of method for preparing above-mentioned modified expanded perlite.
Above-mentioned technical purpose of the present invention is achieved by the following technical programs:
A kind of modified expanded perlite is characterized in that: it comprises pearlstone internal layer and the shell that is wrapped on the pearlstone, the attached inorganic fibre that is associated with of shell, and described shell is made up of the macromolecular material of hydrophobic nature.
Inorganic fibre of the present invention is the whiskerettes shape, and it can finish shell and the extraneous effect of connecting preferably.
Pearlstone internal layer of the present invention is common expanded perlite granule, and the shell on it is that macromolecular material is wrapped to form, and macromolecular material also is fixedly connected with whiskerettes shape inorganic fibre in the wrapping inner layer expanded perlite granule.Internal layer is honey comb like porous kernel, has lower heat transfer coefficient, and the outer shell of being made up of macromolecular material, inorganic fibre partly submerge in the shell, and partly being in shell is the whiskerettes shape outward.Inorganic fibre of the present invention has certain tensile strength, it can by other material in the external world for example cement etc. cling, so just can strengthen the whole cohesive strength with extraneous for example cement etc. of modified expanded perlite particle.Inorganic fibre of the present invention is different from organic fibre, and inorganic fibre can play pearlstone body and the extraneous effect of connecting preferably.
Simultaneously, modified expanded perlite of the present invention is because the attached inorganic fibre that is associated with the whiskerettes shape of appearance, this makes two buffer layer between the expanded perlite granule: the shell that first one deck macromolecular material constitutes, it is wrapped in the skin of pearlstone fully, it has certain toughness, can prevent the fragmentation that causes owing to collision between the pearlstone; It two is inorganic fibres attached on shell, it more softness have elasticity more, can cushion the collision between the pearlstone to greatest extent.
The present invention adopts inorganic fibre not only to be not easy to rot, and its intensity height, and itself and shell and extraneous cohesive strength are all higher.
In order to reach higher strength of joint and cohesive strength, inorganic fibre of the present invention adopts one or more in aluminum silicate fiber or the alkali resistant glass fibre.The present invention selects for use above-mentioned fiber can also improve the work-ing life of fiber in material greatly, and above-mentioned fiber can keep the long period and aging in the alkaline environment of body of wall, and promptly As time goes on the intensity of heat-preserving wall or insulating brick can obviously not descend.
For the inorganic fibre that bonds better, hydrophobic nature macromolecular material of the present invention is one or more in acrylic resin or the Resins, epoxy.Above-mentioned hydrophobic nature macromolecular material can form shell preferably on the pearlstone surface simultaneously, prevents the pearlstone suction.
As preferably, the length of inorganic fibre of the present invention is 2-9mm, too short fiber all is wrapped in the shell easily or only reserves short palpus and can't satisfy and extraneous agglutinating needs, do not reach required intensity, long fiber then causes each root fiber knotting, be difficult between the modified expanded perlite particle separately, agglomerating easily, influenced constructing operation, also can cause the heat-insulating property of final gained body of wall or brick to differ everywhere, this has also influenced the internal intensity of body of wall or brick significantly.Therefore, the length of above-mentioned fiber is outbalance for the present invention, and the contriver attempts by a large amount of, and the inorganic fibre that obtains 2-9mm can overcome above-mentioned defective, and the contriver finds that also the length of inorganic fibre is when 4-5mm simultaneously, and its effect is more good.
The macromolecular material of hydrophobic nature of the present invention can be the Resins, epoxy of solution-type or emulsified acrylic acid resin or solution-type or water-latex type, also their mixture.Vinylformic acid and Resins, epoxy are as properties-correcting agent, because the existence of carboxyl, ether, the adhesion mode between properties-correcting agent and pearlstone, the inorganic fibers has chemical bond and physical adsorption concurrently, and adhesive fastness is bigger.
The present invention also provides a kind of modification processing method of above-mentioned modified expanded perlite, and it may further comprise the steps:
A. add inorganic fibre and mix to pearlstone, described inorganic fibre add-on is every cubic metre of pearlstone 1-5kg;
B. stir the mixture of pearlstone and inorganic fibre and add the hydrophobic nature macromolecular material, the add-on of described hydrophobic nature macromolecular material is every cubic metre of pearlstone 5-15kg;
C. toast B step gains, storing temperature is 60-110 degree centigrade.
The present invention takes above-mentioned simple effective method can obtain modified expanded perlite of the present invention, pearlstone of the present invention is common expanded perlite granule, its average particulate diameter is generally between the 0.15-0.6mm, the macromolecular material that above-mentioned particle and inorganic fibre mix back adding hydrophobic nature can form shell at particle surface, and described shell is attached inorganic fibre simultaneously.Therefore, the add-on of inorganic fibre described in the present invention and hydrophobic nature macromolecular material is a standard with every cubic metre of perlite all.Normally: the addition of described inorganic fibre is 1-5kg, above-mentioned addition is according to the kind of inorganic fibre, length and difference, addition is excessive to cause a large amount of attached being associated on the shell of fiber, agglomerating easily, and too much fiber is in hydrophobic nature and the strength degradation that causes shell in the shell, and its implementation cost is also bigger simultaneously; Described hydrophobic nature macromolecular material addition is 5-15kg, the hydrophobic nature macromolecular material not only makes pearlstone become hydrophobic nature in the present invention, it plays a part to connect inorganic fibre and pearlstone body simultaneously, its adding should make that inorganic fibre can be comparatively even, thereon attached securely, add too much hydrophobic nature macromolecular material and not only increased implementation cost of the present invention, it can be included in the inorganic fibre major part in the shell simultaneously, make inorganic fibre less, can't reach required strength of joint with extraneous palpus shape part of getting in touch.
In preferred aluminum silicate fiber of inorganic fibre described in the above-mentioned modification processing method of the present invention or the alkali resistant glass fibre one or more, the length of inorganic fibre is 2-9mm, and described hydrophobic nature macromolecular material is the acrylic resin of solution-type or water-latex type, in the Resins, epoxy one or more.Aluminum silicate fiber or alkali resistant glass fibre can keep higher intensity for a long time in the alkaline environment of its use, it can be by the acrylic resin of the solution-type of hydrophobic nature or water-latex type, the powerful parcel of Resins, epoxy, when the macromolecular material of hydrophobic nature wraps up described inorganic fibre, both effect of impregnation may are good, the joint portion of inorganic fibre and macromolecular material does not have the space, the water-intake rate that has guaranteed modified expanded perlite is lower, has also guaranteed the strength of joint of shell and inorganic fibre.Simultaneously, the bond effect of aluminum silicate fiber of the present invention or alkali resistant glass fibre and extraneous for example cement is good, possesses big bonding force, thereby has guaranteed the cohesive strength of modified expanded perlite of the present invention and extraneous mortar coagulated material on the whole.
Baking procedure of the present invention is that the pearlstone material with the inorganic fibre that bondd toasts under described temperature, it mainly acts on is macromolecular material is solidified and to remove moisture content in the material, make macromolecular material parcel pearlstone fine and close more simultaneously, help the hydrophobicity performance and the structural strength of modification perlite body.
In addition, the present invention also provides following thinking: above-mentioned hydrophobic nature macromolecular material and inorganic fibre are made special pearlstone modified mixture sale, because above-mentioned hydrophobic nature macromolecular material and inorganic fibre have above-mentioned various advantages at the modification of pearlstone, its market outlook should be quite wide.
The present inventor finds that in baking procedure, the crack appears in the too high shell that causes of temperature, perhaps macromolecular material sex change, and might cause the disengaging of inorganic fibre.Temperature is crossed to hang down and can not be reached above-mentioned cured effect in the baking.
The main body of hydrophobic nature macromolecular material of the present invention is one or more in acrylic resin or the Resins, epoxy, and they can be that solution-type also can be an emulsion-type.
Certainly, modified expanded perlite of the present invention can become thermal insulation mortar with other combination of materials, also can make insulating brick with other combination of materials.
In sum, the present invention has following beneficial effect:
1, the present invention adopts the polymer shell of parcel hydrophobic nature on pearlstone, and solved existing pearlstone suction back thermal conductivity height with the technical scheme of the attached inorganic fibre of shell, the heat insulation function heavy losses, and hydrophobic expansion pearlite is little in the cohesive force of mortar coagulated material, the thermal conductivity height of thermal insulation mortar, ultimate compression strength, the technical problem that tensile strength is low;
2, the present invention has adopted preferably the kind of inorganic fibre, it more can adapt to the alkaline environment of building, the life-span of its use is longer, also can be better and the polymer material layer and the cement layer bonding at its two ends, thus improve the intensity of heat-preserving wall or insulating brick on the whole;
4, polymer shell of the present invention not only makes the water-intake rate of pearlstone reduce, guaranteed the heat-insulating property of material, and form protective membrane from the external world, cushioned the collision between the pearlstone greatly, the breakage of having avoided the collision between the pearlstone to cause; The present invention is the attached whiskerettes shape inorganic fibre that is associated with on shell simultaneously, this fiber is not only being brought into play the effect that connects pearlstone body and extraneous cement can also become other buffer layer cushioning the collision between each pearlstone, thereby prevents the breakage of pearlstone in maximum;
5, the length of inorganic fibre that the present invention is preferred, it can satisfy being connected of inorganic fibre and shell preferably, prevent that fiber self is agglomerating or the shell that all submerges in, it can guarantee that the fiber two ends imbed the length in shell and the cement layer simultaneously, thereby guarantees that fiber connects both intensity;
6, the present invention also provides a kind of method that this modified expanded perlite is made that is fit to very much, its technology is simple, the required equipment cost is low, the products obtained therefrom stable performance, inorganic fibre can evenly attachedly be associated on the pearlstone, and the water-intake rate of the modified expanded perlite of attached inorganic fibre is still lower, does not have bigger space.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is done further detailed description; but; be noted that: following embodiment is giving an example to technical solution of the present invention just; it is not limitation of the present invention; those of ordinary skills after having read this specification sheets according to its knowledge of grasping under the situation of not making creative work; can make various accommodations to following embodiment, but as long as in claim scope of the present invention, all be subjected to and to be protected.
Embodiment 1
The aqueous epoxy resin emulsion of weighing 3.0kg.Add solidifying agent, the back that stirs is standby.
With the 200L mean diameter is in the pearlstone input stirrer machine barrel of 0.3mm, put into the alkali resistant glass fibre of 0.6kg, the mean length of described alkali resistant glass fibre is 2mm, stir 3min, in barrel, spray the above-mentioned standby aqueous epoxy emulsion 3kg that stirs after stirring fully, above-mentioned sprinkling makes epoxy emulsion be coated on the pearlstone surface equably, the rotation of keeping the stirrer machine barrel during sprinkling makes that alkali resistant glass fibre is attached equably and is associated on the pearlstone, discharging after sprinkling is finished, the gained material enters baking oven and toasts about 110 degrees centigrade, toast after 2-3 hour, epoxy resin cure, and the water ratio of control baking gained material is 0.5%.
The kind of described solidifying agent and consumption have the user to select to add as required, and this is the known technology of this area, does not repeat them here.
Embodiment 2
The aqueous epoxy resin emulsion of weighing 3kg.Add solidifying agent, the back that stirs is standby.
With the 200L mean diameter is in the pearlstone input stirrer machine barrel of 0.3mm, put into the aluminum silicate fiber of 0.6kg, stir 3min, in barrel, spray the above-mentioned standby aqueous epoxy emulsion 3kg that stirs after stirring fully, above-mentioned sprinkling makes epoxy emulsion be coated on the pearlstone surface equably, the rotation of keeping the stirrer machine barrel during sprinkling makes that alkali resistant glass fibre is attached equably and is associated on the pearlstone, discharging after sprinkling is finished, the gained material enters baking oven and toasts about 110 degrees centigrade, toast after 2-3 hour, epoxy resin cure, and the water ratio of control baking gained material is 0.3%.
Embodiment 3
The water-borne acrylic resin solution of weighing 3.0kg.
With the 200L mean diameter is in the pearlstone input stirrer machine barrel of 0.3mm, put into the alkali resistant glass fibre of 0.6kg, stir 3min, stir fully back above-mentioned load weighted water-borne acrylic resin 2.4kg of sprinkling in barrel, above-mentioned sprinkling makes water-borne acrylic resin be coated on the pearlstone surface equably, the rotation of keeping the stirrer machine barrel during sprinkling makes that alkali resistant glass fibre is attached equably and is associated on the pearlstone, discharging after sprinkling is finished, the gained material enters baking oven and toasts about 105 degrees centigrade, toast after 1-2 hour, acrylic resin is solidified, and the water ratio of control baking gained material is 0.2%.
Embodiment 4
The aqueous epoxy resin emulsion of weighing 3.0kg.Add an amount of solidifying agent, the back that stirs is standby.
With the 200L mean diameter is in the pearlstone input stirrer machine barrel of 0.15mm, put into the alkali resistant glass fibre of 0.3kg, stir 3min, in barrel, spray the above-mentioned standby aqueous epoxy emulsion 3.0kg that stirs after stirring fully, above-mentioned sprinkling makes epoxy emulsion be coated on the pearlstone surface equably, the rotation of keeping the stirrer machine barrel during sprinkling makes that alkali resistant glass fibre is attached equably and is associated on the pearlstone, discharging after sprinkling is finished, the gained material enters baking oven and toasts about 90 degrees centigrade, toast after 2-3 hour, epoxy resin cure, the water ratio of control baking gained material is 0.2%.
Use the embodiment of the invention 1,2 respectively, 3, the 4 whiskerettes light-weight aggregates that obtained, with identical proportioning, the same process condition, preparation gained concrete dry-powder thermal insulation mortar product properties:
Use unmodified pearlstone respectively, organic-silicon-modified hydrophobic expansion pearlite, it is that the whiskerettes light-weight aggregate is a light skeletal that the embodiment of the invention 1 obtains modified expanded perlite, with identical proportioning, the same process condition, preparation gained concrete dry-powder thermal insulation mortar product properties compares:
Above-mentioned contrast as can be seen, technical scheme of the present invention makes performances such as tensile strength, 28d thermal conductivity, the 28d stretch-bonded of thermal insulation mortar goods is strong be greatly improved.
Claims (10)
1. modified expanded perlite is characterized in that: it comprises the pearlstone internal layer and is wrapped in shell on the pearlstone, the attached inorganic fibre that is associated with of shell, and described shell is made up of the macromolecular material of hydrophobic nature; The length of described inorganic fibre is 2-9mm, and the amount of hydrophobic nature macromolecular material is every cubic metre of pearlstone 5-15kg.
2. modified expanded perlite according to claim 1 is characterized in that: described hydrophober is one or more in acrylic resin or the Resins, epoxy.
3. modified expanded perlite according to claim 1 is characterized in that: described inorganic fibre is one or more in aluminum silicate fiber or the alkali resistant glass fibre.
4. modified expanded perlite according to claim 1 is characterized in that: described inorganic fibre is must shape.
5. pearlstone surface modifying treatment may further comprise the steps:
A. add inorganic fibre and mix to pearlstone, described inorganic fibre add-on is every cubic metre of pearlstone 1-5kg, and the length of described inorganic fibre is 2-9mm;
B. stir the mixture of pearlstone and inorganic fibre and add the hydrophobic nature macromolecular material, the add-on of described hydrophobic nature macromolecular material is every cubic metre of pearlstone 5-15kg;
C. toast B step gains, storing temperature is 60-110 degree centigrade.
6. pearlstone surface modifying treatment according to claim 5, it is characterized in that: described inorganic fibre is one or more in aluminum silicate fiber or the alkali resistant glass fibre, and described hydrophobic nature macromolecular material is the acrylic resin of solution-type or water-latex type, in the Resins, epoxy one or more.
7. one kind comprises the lagging material of modified expanded perlite according to claim 1.
8. the properties-correcting agent of a pearlstone, it is characterized in that: it comprises hydrophobic nature macromolecular material and inorganic fibre.
9. the properties-correcting agent of pearlstone according to claim 1 is characterized in that: described hydrophobic nature macromolecular material is the acrylic resin of solution-type or water-latex type, in the Resins, epoxy one or more.
10. the properties-correcting agent of pearlstone according to claim 1, it is characterized in that: described inorganic fibre is one or more in aluminum silicate fiber, the alkali resistant glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101378214A CN101337780B (en) | 2008-07-03 | 2008-07-03 | Modified expanded perlite and surface modification processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101378214A CN101337780B (en) | 2008-07-03 | 2008-07-03 | Modified expanded perlite and surface modification processing method thereof |
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| CN101337780B true CN101337780B (en) | 2011-07-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105236904A (en) * | 2015-10-26 | 2016-01-13 | 苏州书瑞环保科技有限公司 | High strength building board and preparation method thereof |
| CN105948642B (en) * | 2016-04-28 | 2018-04-13 | 中晶工程材料（信阳）有限公司 | The modified expanded perlite insulation board and its production method of a kind of hydrophobic |
| CN105948641B (en) * | 2016-04-28 | 2018-04-13 | 中晶工程材料（信阳）有限公司 | A kind of water proof type modified expanded perlite insulation board and its production method |
| CN106145864A (en) * | 2016-06-30 | 2016-11-23 | 合肥广能新材料科技有限公司 | Body of wall fire-retardant heat-insulation material and preparation method thereof |
| CN108609940A (en) * | 2018-07-26 | 2018-10-02 | 广东天昌防水隔热工程有限公司 | Expansion vitrification bead heat-preserving mortar |
| CN110357532B (en) * | 2019-07-29 | 2021-07-20 | 北京固瑞恩科技有限公司 | Light polymer cement mortar with waterproof and anticorrosive functions |
| CN115820000A (en) * | 2022-12-15 | 2023-03-21 | 南京市大道纳米新材料有限公司 | Perlite hydrophobic enhancement modification method, water-based heat-insulation paint and preparation method thereof |
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