CN102528928B - High-scattering method for chemical fiber framework material of building inorganic coating, product and uses thereof - Google Patents
High-scattering method for chemical fiber framework material of building inorganic coating, product and uses thereof Download PDFInfo
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Abstract
The invention relates to a high-scattering method for a chemical fiber framework material of a building inorganic coating and a product and application thereof. The high-scattering method for the chemical fiber framework material of the building inorganic coating comprises the following steps of (1) adding chemical fibers and an organic solvent into a container in weight ratio of 1:40-60, and stirring the mixture at the room temperature to enable the chemical fibers to dissolve into even fat-soluble solution; and (2) completely spraying the fat-soluble solution formed through the step (1) into powdered building coating which is in the weight ratio of 1:400-600 to the chemical fibers, stirring, evenly mixing at the room temperature and then heating, enabling the organic solvent to be evaporated, enabling the chemical fibers to be evenly precipitated and scattered into the powder-shaped raw material, then cooling the chemical fibers to the room temperature, and after stirring and mixing, obtaining the powder-shaped functional coating. Compared with the prior art, the high-scattering method for the chemical fiber framework material of the building inorganic coating has the advantages that the obtained powder-shaped functional coating not only can remarkably improve scattering degree of the framework material and the framework function and the availability of the chemical fibers, but also can ensure the coating strength and decoration effect of the coating.
Description
Technical field
The present invention relates to a kind of high degree of dispersion method and products thereof and application of the chemical fibre framework material of building inorganic coating; The method of the high degree of dispersion of the chemical fibre framework material of a kind of water-based, inorganic, powder, functional coating particularly.
Background technology
Building coating is an important class in coating.In China, be generally used for the coating that inner wall of building, exterior wall, ceiling, ground and toilet etc. apply, be called building coating.Inorganic serial building coating mainly contains inorganic macromolecule material, comprises that water-soluble silicate (alkali silicate) is, Ludox system and inorganic polymer system etc.The inorganic coatings such as potassium silicate, sodium metasilicate and Ludox of the still alkali silicate system that application at present is maximum.Traditional inorganic be that coating has cement-lime-sand, lime-clay-sand etc. to stir according to a certain ratio the mixture formed.
Solid dispersion technology as far back as 1961 by propositions such as Sekiguchi.It is to take urea as carrier material prepares the sulphathiazole solid dispersions with fusion method, makes the insoluble drug component become dispersity in carrier, and oral rear absorption and excretion are all obviously accelerated than oral sulphathiazole.Within 1963, these technology of use such as Levy have made the solid dispersions that molecule disperses, and dissolution rate obviously improves and more easily absorbs.
Yet, solid dispersion technology is used for to the current also rarely seen reported in literature of paint field.In recent years along with the raising of people to living environment and healthiness life requirement, stimulated dramatically the development of building inside and outside wall coating, particularly people are to integrating the active demand of environmental protection, low-carbon (LC), health, durable functional coating, water-based, the inexorable trend that inorganic, powder (functional) coating becomes the building coating development.One of key technology of this coating, must be dispersed in framework material in functional powder-type coating solid dielectric, otherwise will when applying coating, cause the intensity difference of each coating to chap, peel off very greatly.The framework material that is generally used for building in inorganic coating is wood fibre, in the building inorganic coating, plays the cracking resistance effect.Along with the prolonged application of building inorganic coating, wood fibre is moisture and rotting in absorbed air not only, and the culture medium that becomes mould easily makes coating surface mildew occur, has both shortened the life-span of building coating, affect again building coating attractive in appearance; The more important thing is that wood fibre, owing to rotting, can't play the cracking resistance effect in building coating, cause building the inorganic coating dry linting, chap, peel off, directly affect the result of use of inorganic coating.Take chemical fibre as framework material, the defect that the inorganic coating that can to overcome above-mentioned wood fibre be framework material produces, thereby the very big proper function of degree performance inorganic functional coating.
Different from the medicinal dispersion technology extensively adopted, the dispersion technology that inorganic functional coating is used is that framework material (being the sheet short fiber) is become to single thread short fiber by mechanical dispersion, mix with powder raw material according to a certain ratio again, thereby be distributed in the powder-type coating solid dielectric; It is dispersed, and thing is not fat-soluble, water soluble drug, but water-insoluble, fibrous framework material; Its dispersing mode is not liquid state-solid dispersion that medicine is commonly used, but solid-state-solid dispersion mode; State after its dispersion is not the common sheet of medicine, granular, capsule shape, but uniform single thread short fiber; Its disperse role be not medicine often give can be absorbed by the body, decompose and effectively utilize, but can keep original structure and skeleton, cracking resistance and function.As can be seen here, this water-insoluble, fibrous framework material is dispersed in to the method in the powder-type coating solid dielectric, both be different from medicinal dispersion technology, the line style resin is converted into to build condensation product or high polymer to play the organic coating of skeleton, cracking resistance and function fully different from quoting crosslinking agent or curing agent again, belong to the new technology that solid disperses.
Functional powdery building coating mainly comprises water-repellent paint and insulating mold coating, belongs to the aqueous dispersion functional coating.The disclosed a kind of inner-wall coating composition of the Chinese invention patent that for example patent No. is ZL200510129955.8, it is constructed as follows: a kind of inner-wall coating composition, said composition is by weight mainly being comprised of following component (by weight percentage): white carbon 8～11%, lime 14～18%, cement 31～36%, quartz sand 11～14%, terylene 0.10～0.20%, coarse whiting 3～6%, bentonite 2～5%, concave convex rod 2～5%, nano titanium oxide 0.1～0.3%, nano phase ag_2 o 0.1～0.3%, tourmaline 1～2%, heat preserving agent 4～6%, adhesive 0.6～1.0%, defoamer 0.5～1.0%, humic acid 0.1～0.7%, diatomite 5～7%, titanium dioxide 2～3%.This inner-wall coating composition can coordinate direct use by a certain percentage with water, is exclusively used in interior wall and applies.In the raw material of functional powdery building coating with chemical fibre (as, polyster fibre, polypropylene fiber etc.) be framework material, its dispersion effect still can not be satisfactory, cause when construction better coating can not reach the environmental protection of its expection, low-carbon (LC), healthy instructions for use, main cause is that its chemical fibre framework material exists following dispersion technology defect: be at first because chemical fibre belongs to slightly water-soluble solid filiform, it is very poor with single thread short fiber solid form dispersing uniformity in the pressed powder medium, but so be difficult to improve the dispersing uniformity of chemical fibre component in the powdery functional coating and availability, inner-wall coating composition as above-mentioned ZL200510129955.8 patent, the weight ratio of its terylene component is only 0.10～0.20%, measure the terylene content in this inner-wall coating composition, its coefficient of variation (also claims relative standard deviation, RSD) be greater than 10%, it is very difficult showing thus 0.10～0.20% terylen is mixed by solid-solid mode in the pressed powder medium that is distributed to 99.9～99.8%, but thereby chemical fibre component availability and skeleton function in the powdery functional coating have been restricted, the secondth, become single thread short fiber at existing chemical fibre framework material through mechanical dispersion, again in, the powder product process of sieving, be mixed into dispersity composite with other solid constituent of coating, because the dispersing uniformity of framework material in the pressed powder medium is poor, make the poor performance opposite sex of coating large, thereby greatly increased the production difficulty of powdery functional coating, the 3rd is owing to being difficult to eliminate the inhomogeneities of chemical fibre framework material in the powdery functional coating, when the brushing of coating, roller coating or spraying application operation, not only in coating, the chemical fibre distributional difference is very large, plug nozzle even, both increased difficulty of construction, affect again the attractive in appearance of coating surface, but more seriously weaken skeleton function and the availability thereof of chemical fibre in coating, its consequence will cause the coating be full of cracks, peel off.
Current people attempt to overcome framework material by interpolation dispersant in the slurry of nano-powder and disperse inhomogeneous problem, but because the nano-dispersed technology only is applicable to the preparation of liquid or paste coating, need in process of production the solution to adding accurately to select Acidity of Aikalinity, to guarantee that different solid constituents is in isoelectric point, dispersion stable is existed and coagulation can not occur, and make dispersant be adsorbed on well the surface of multiple nano-powder, form adsorption layer, by electric repulsion with sterically hinderedly be used for realizing the dispersion to nano-powder.Due to nano particle have very high surface can, in base-material, disperse more difficult, must be to its surface modification, improve compatibility and self assembly performance with polymer, could obtain dispersion preferably.Therefore its technology of preparing process is too complicated, requires high.In addition, with the chemical fibre framework material, compare, nano paint framework material used must be nano-powder, and be water-soluble or fat-soluble, radical change has occurred in the framework material of this nano-powder on form, thereby can not play skeleton function in the coating of inorganic coating, makes the intensity of coating low, quality problems such as chapping, peel off even occur, thereby greatly limited the application of coating.As can be seen here, based on existing solid dispersion technology, be difficult to realize the technique effect of framework material high degree of dispersion in functional coating of expectation, affect functional coating and given play to its due environmental-protecting performance and decorative effect, be badly in need of the high degree of dispersion technology of the chemical fibre framework material of a kind of water-based of exploitation, inorganic, powdery functional coating, in order to solve framework material, disperse inhomogeneous problem.
Summary of the invention
The object of the invention is to overcome the above-mentioned various defects of prior art, a kind of high degree of dispersion method of chemical fibre framework material of coating is provided, be particularly useful for applying the use of water-based, inorganic, powdery functional coating.
A kind of chemical fibre framework material high degree of dispersion method of building coating comprises the following steps:
(1), in container, with 1:40～60 weight proportions, add chemical fibre and organic solvent, at room temperature stir and make chemical fibre be dissolved into uniform fat-soluble solution;
(2) the fat-soluble solution, step 1 formed all is sprayed in the powdery building coating with chemical fibre 1:400～600 weight proportions, stir under room temperature, mix, then heating, make organic solvent evaporation, chemical fibre is evenly separated out and is scattered in powder raw material, be cooled to again room temperature, through stirring, mixing, obtain the powdery functional coating.
The principle of the chemical fibre framework material high degree of dispersion method that coating of the present invention is used is, first take organic solvent as carrier solvent, chemical fibre is solved homogeneously in carrier solvent and is treated to fat-soluble solution, the latter all is sprayed in powder raw material, stir under room temperature, mix, then, be heated above organic solvent boiling point 2-5 (℃), along with the evaporation chemical fibre of organic solvent is evenly separated out and is scattered in powder raw material, obtain the water-based of chemical fibre framework material high degree of dispersion, inorganic, the functional interior wall coating of powdery.
Compared with prior art, the invention has the beneficial effects as follows: fiber dispersion is even, and gained powdery functional coating performance improves.
The specific embodiment
A kind of chemical fibre framework material high degree of dispersion method of building coating comprises the following steps:
(1), in container, with 1:40～60 weight proportions, add chemical fibre and organic solvent, at room temperature stir and make chemical fibre be dissolved into uniform fat-soluble solution;
(2) the fat-soluble solution, step 1 formed all is sprayed in the powdery building coating with chemical fibre 1:400～600 weight proportions, stir under room temperature, mix, then heating, make organic solvent evaporation, chemical fibre is evenly separated out and is scattered in powder raw material, be cooled to again room temperature, through stirring, mixing, obtain the powdery functional coating.
The described heating-up temperature of step (2) be higher than organic solvent boiling point 2-5 (℃).
The steam of the described organic solvent evaporation gained of step (2) through condensation, collect, recycle.
Described organic solvent is acetone (boiling point: 56.5 ℃), ethyl acetate (boiling point: 77 ℃), butanone (boiling point: 79.6 ℃), a kind of in oxolane (boiling point: 66 ℃), carbon tetrachloride (boiling point: 76.8 ℃) solvent.
Described chemical fibre is a kind of in polyster fibre, polypropylene fiber.
The weight proportion of described chemical fibre and organic solvent is preferably 1:50.
Described powdery building coating contains following component: white carbon 8～11%, lime 14～18%, cement 31～36%, quartz sand 11～14%, coarse whiting 3～6%, bentonite 2～5%, concave convex rod 2～5%, nano titanium oxide 0.1～0.3%, nano phase ag_2 o 0.1～0.3%, tourmaline 1～2%, heat preserving agent 4～6%, adhesive 0.6～1.0%, defoamer 0.5～1.0%, humic acid 0.1～0.7%, diatomite 5～7%, titanium dioxide 2～3%.
The powdery functional coating, make according to the chemical fibre framework material high degree of dispersion method of above-mentioned building coating.
The application of powdery functional coating, described powdery functional coating mixes, stirs with 1:1～1.5 weight proportions with water, can obtain the construction paste coating.
The weight proportion of described powdery functional coating and water is preferably 1:1.2.
Described construction paste coating and functional interior wall coating be containing carrier solvent, and its difference is that paste coating can spontaneous generation negative oxygen ion and the VOC function such as purifying formaldehyde through applying interior wall, realizes the environmental protection, low-carbon (LC) of expection, healthy function.
Adopt respectively powdery functional coating of the present invention as trial target; Non-patented technology powdery functional coating of the present invention is product (reference substance: the short fiber solid adds in same powder raw material, through solid-state-solid-state stirring, mix) in contrast.Sampling is tested as follows respectively: measure polyster fibre content (table 1) in coating, result shows, in trial target, the content of polyster fibre approaches true value (polyster fibre addition), the relative error (Er, %) of measured value≤5; Simultaneously, trial target than polyster fibre assay value in reference substance relative standard deviation RSD (%) much smaller, and trial target RSD (%)≤5, further illustrate polyster fibre in the powdery functional coating of applying patented technology production of the present invention and be uniformly dispersed.But not only can significantly improve the decentralization of framework material, skeleton function and the availability of chemical fibre, and can make to apply simple, can improve the intensity of coating simultaneously and guarantee the decorative effect (table 2) of paint coatings.
(20 kilograms of samplings from the trial target of 2 tons and reference substance respectively, then use " quartering " division to 2 kilogram, then use " quartering " to get 1 kilogram of trial target and reference substance for examination in the comparison of table 1 polyster fibre decentralization.Take 10g (± 0.1mg) trial target and reference substance, use successively the sub-sieve screening of 65 orders (i.e. 220 μ m), the weight of weighing oversize (polyster fibre), repeat 10 times, calculates the RSD% of measured value.Simultaneously, calculate the Er% of measured value with true value [being sampling amount mean value * polyster fibre addition (0.20%)].
The performance indications of the application of table 2 powdery functional coating of the present invention (component proportion is powder: water=1:0.9, presses the method test of JG/T26 regulation)
Below by three specific embodiments, further illustrate the specific embodiment of the chemical fibre framework material high degree of dispersion method of coating of the present invention.
Embodiment 1
Toward the 38mm pencil monofilament polyester staple fiber that adds 0.1Kg in container, 5.5Kg acetone, under room temperature, stirring and dissolving becomes even fat-soluble chemical fibre solution; Solution all is sprayed in 50Kg powdery building coating and stirs and evenly mixs.Then, be heated to 60 ℃, along with the evaporation chemical fibre of organic solvent is evenly separated out and is scattered in the powdery building coating; The acetone that collection is evaporated, through condensation, return to container and mix, recycle with supplementary organic solvent; The powdery building coating of processing first is cooled to room temperature, stirs, mixes, and obtains the powdery functional coating that does not contain carrier solvent of the present invention.This coating and water fit in paste, can be for construction, decorating interior wall.
Embodiment 2
Add the 0.1Kg polyster fibre in container, 4.0Kg ethyl acetate, under room temperature, stirring and dissolving becomes even fat-soluble chemical fibre solution; By spray solution in 40Kg powdery building coating and stir and evenly mix.Then, be heated to 80 ℃, along with the evaporation chemical fibre of organic solvent is evenly separated out and is scattered in the powdery building coating, collect the ethyl acetate be evaporated, through condensation, return to container and mix, recycle with supplementary organic solvent; The powdery building coating of processing first is cooled to room temperature, stirs, mixes, and obtains the powdery functional coating that does not contain carrier solvent of the present invention.This coating and water fit in paste, get final product construction application.
Embodiment 3
Add the 0.1Kg polypropylene fiber in container, the 5.0Kg carbon tetrachloride, under room temperature, stirring and dissolving becomes even fat-soluble chemical fibre solution (2%); By spray solution in 50Kg powdery building coating and stir and evenly mix, stir under room temperature, mix, then, be heated to 80 ℃, along with the evaporation chemical fibre of organic solvent is evenly separated out and is scattered in powder raw material, organic solvent through condensation, return to container and mix, recycle with supplementary organic solvent; The powder raw material of processing first is cooled to room temperature, stirs, mixes, and obtains the powdery functional coating that does not contain carrier solvent of the present invention.This coating and water fit in paste, can be for construction, decorating interior wall.
Through country and industry supervisor testing agency, detect, the physics and chemistry that adopts the powdery functional coating of the above embodiment acquisition of the inventive method to have and functional parameter all reach country or industry standard, performance indications reach company standard (table 3).
The performance indications of table 3 coating of the present invention (component proportion is powder: water=1:0.9, presses the method test of JG/T26 regulation)
The chemical fibre framework material high degree of dispersion method of coating of the present invention also is used on the basis of the component of aforementioned coating composition and content thereof to be increased, reduces or exchange the part component and the coating composition that obtains, not only can be for interior wall coating, and be applicable to exterior coating, give full play of nontoxic, non-stimulated environmental protection characteristic and the excellent performances such as water proofing property, ageing resistance and low temperature flexibility of coating, and continue to produce the functions such as anion and purifying formaldehyde.
Claims (9)
1. the chemical fibre framework material high degree of dispersion method of a building coating, is characterized in that, comprises the following steps:
(1), in container, with 1:40～60 weight proportions, add chemical fibre and organic solvent, at room temperature stir and make chemical fibre be dissolved into uniform fat-soluble solution;
(2) the fat-soluble solution, step 1 formed all is sprayed in the powdery building coating with chemical fibre 1:400～600 weight proportions, stir under room temperature, mix, then heating, make organic solvent evaporation, chemical fibre is evenly separated out and is scattered in powder raw material, be cooled to again room temperature, through stirring, mixing, obtain the powdery functional coating;
Described powdery building coating contains following component: white carbon 8～11%, lime 14～18%, cement 31～36%, quartz sand 11～14%, coarse whiting 3～6%, bentonite 2～5%, concave convex rod 2～5%, nano titanium oxide 0.1～0.3%, nano phase ag_2 o 0.1～0.3%, tourmaline 1～2%, heat preserving agent 4～6%, adhesive 0.6～1.0%, defoamer 0.5～1.0%, humic acid 0.1～0.7%, diatomite 5～7%, titanium dioxide 2～3%.
2. the chemical fibre framework material high degree of dispersion method of building coating according to claim 1, is characterized in that, the described heating-up temperature of step (2) be higher than organic solvent boiling point 2-5 (℃).
3. the chemical fibre framework material high degree of dispersion method of building coating according to claim 1, is characterized in that, the steam of the described organic solvent evaporation gained of step (2) through condensation, collect, recycle.
4. the chemical fibre framework material high degree of dispersion method of building coating according to claim 1, is characterized in that, described organic solvent is acetone, ethyl acetate, butanone, a kind of in oxolane, carbon tetrachloride.
5. the chemical fibre framework material high degree of dispersion method of building coating according to claim 1, is characterized in that, described chemical fibre is a kind of in polyster fibre, polypropylene fiber.
6. the chemical fibre framework material high degree of dispersion method of building coating according to claim 1, is characterized in that, the weight proportion of the described chemical fibre of step (1) and organic solvent is preferably 1:50.
7. the powdery functional coating, is characterized in that, according to the chemical fibre framework material high degree of dispersion method of the described building coating of claim 1～6, makes.
8. the application of the described powdery functional coating of claim 7, is characterized in that, described powdery functional coating mixes, stirs with 1:1～1.5 weight proportions with water, can obtain the construction paste coating.
9. the application of powdery functional coating according to claim 8, is characterized in that, the weight proportion of described powdery functional coating and water is preferably 1:1.2.
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| CN103821295B (en) * | 2014-01-13 | 2016-01-06 | 福建皓尔宝新材料科技有限公司 | A kind of gradual change coating process of functional coating |
| CN103821294B (en) * | 2014-01-13 | 2016-01-06 | 福建皓尔宝新材料科技有限公司 | A kind of spraying method of functional coating |
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Effective date of registration: 20160418 Address after: 363000 Fujian province Zhangzhou city Longwen District Lantian Heming Road Economic Development Zone No. 12 and No. 2 Factory Yu Group Patentee after: FUJIAN HEAL-POWER NEW MATERIAL SCIENCE & TECHNOLOGY CO., LTD. Address before: 363704 Industrial Development Zone, Wenfeng Town, Pinghe County, Fujian, Zhangzhou Patentee before: Fujian Yuhe Haoyue Bioengineering Materials Co., Ltd. Patentee before: Liu Jiaming Patentee before: Ye Fei |