CN112980233A - Putty and preparation process thereof - Google Patents
Putty and preparation process thereof Download PDFInfo
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- CN112980233A CN112980233A CN202110329159.8A CN202110329159A CN112980233A CN 112980233 A CN112980233 A CN 112980233A CN 202110329159 A CN202110329159 A CN 202110329159A CN 112980233 A CN112980233 A CN 112980233A
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- putty
- powder
- attapulgite
- parts
- cellulose
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- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 122
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 84
- 229960000892 attapulgite Drugs 0.000 claims abstract description 83
- 229920002678 cellulose Polymers 0.000 claims abstract description 43
- 239000001913 cellulose Substances 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 42
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 229920001971 elastomer Polymers 0.000 claims abstract description 23
- 230000000593 degrading effect Effects 0.000 claims abstract description 13
- 241000276489 Merlangius merlangus Species 0.000 claims abstract description 12
- 230000015556 catabolic process Effects 0.000 claims abstract description 9
- 238000006731 degradation reaction Methods 0.000 claims abstract description 9
- 235000010980 cellulose Nutrition 0.000 claims description 39
- 239000002245 particle Substances 0.000 claims description 33
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 19
- 239000004816 latex Substances 0.000 claims description 17
- 229920000126 latex Polymers 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 15
- -1 polysiloxane Polymers 0.000 claims description 15
- 239000011787 zinc oxide Substances 0.000 claims description 14
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- 239000012065 filter cake Substances 0.000 claims description 9
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- 238000000967 suction filtration Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 8
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 8
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 8
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- 229920000168 Microcrystalline cellulose Polymers 0.000 claims description 7
- 239000008108 microcrystalline cellulose Substances 0.000 claims description 7
- 235000019813 microcrystalline cellulose Nutrition 0.000 claims description 7
- 229940016286 microcrystalline cellulose Drugs 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 229920000609 methyl cellulose Polymers 0.000 claims description 6
- 239000001923 methylcellulose Substances 0.000 claims description 6
- 235000010981 methylcellulose Nutrition 0.000 claims description 6
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 4
- PTHCMJGKKRQCBF-UHFFFAOYSA-N Cellulose, microcrystalline Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC)C(CO)O1 PTHCMJGKKRQCBF-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 28
- 239000000126 substance Substances 0.000 abstract description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 12
- 239000007789 gas Substances 0.000 abstract description 11
- 230000036541 health Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 6
- 229910021529 ammonia Inorganic materials 0.000 abstract description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 239000004566 building material Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 43
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 30
- 229910052791 calcium Inorganic materials 0.000 description 30
- 239000011575 calcium Substances 0.000 description 30
- 239000000945 filler Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 14
- 239000010410 layer Substances 0.000 description 14
- 239000011148 porous material Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 13
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- 238000006703 hydration reaction Methods 0.000 description 8
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- 230000002195 synergetic effect Effects 0.000 description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 description 7
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- 239000000084 colloidal system Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 238000000746 purification Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 206010016807 Fluid retention Diseases 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 239000004570 mortar (masonry) Substances 0.000 description 6
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- 239000002585 base Substances 0.000 description 5
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- 239000001257 hydrogen Substances 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
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- 239000004927 clay Substances 0.000 description 4
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- 238000005260 corrosion Methods 0.000 description 4
- 238000005034 decoration Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010306 acid treatment Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 3
- 238000003905 indoor air pollution Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000007665 sagging Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000004887 air purification Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
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- 229920003023 plastic Polymers 0.000 description 2
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- 229910021532 Calcite Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229920001410 Microfiber Polymers 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- GANNOFFDYMSBSZ-UHFFFAOYSA-N [AlH3].[Mg] Chemical compound [AlH3].[Mg] GANNOFFDYMSBSZ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000002998 adhesive polymer Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 229910001748 carbonate mineral Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 229920000891 common polymer Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
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- 150000001261 hydroxy acids Chemical class 0.000 description 1
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- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/34—Filling pastes
Abstract
The invention provides putty and a preparation process thereof, and relates to the technical field of building materials. The putty mainly comprises sierozem powder, coarse whiting powder, attapulgite, cellulose, rubber powder and a formaldehyde degradation catalyst material. The putty has reasonable matching, higher bonding strength and adhesive force, and improves the defects of easy powder falling, peeling and cracking of the putty. In addition, the formaldehyde degrading catalyst material contained in the putty can adsorb harmful substances such as formaldehyde in the air, and is beneficial to human health. In addition, the invention also relates to a preparation method of the putty, which activates the attapulgite, increases the internal surface area of the attapulgite so as to improve the reaction activity of the attapulgite, enhances the capability of the attapulgite for adsorbing volatile harmful gases such as formaldehyde, ammonia and the like, and also improves the dispersibility of the putty so as to improve the workability of the putty.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to putty and a preparation process thereof.
Background
In recent years, the problem of indoor air pollution caused by indoor decoration has been increasingly emphasized. The indoor air pollution is mainly caused by the overproof harmful substances such as formaldehyde, organic matters and ammonia in the air caused by decoration. Modern people live and work indoors in 90% of the average time, and the indoor environment is closely related to human health.
Disclosure of Invention
The invention aims to provide the putty which is reasonable in matching, has higher bonding strength and adhesive force, and overcomes the defects that the putty is easy to fall off powder, peel and crack. In addition, the formaldehyde degrading catalyst material contained in the putty can adsorb harmful substances such as formaldehyde in the air, and is beneficial to human health.
Another object of the present invention is to provide a process for preparing a putty, which comprises activating attapulgite to increase the inner surface area thereof, thereby increasing the reactivity thereof, enhancing the ability thereof to adsorb volatile harmful gases such as formaldehyde and ammonia, and further improving the dispersibility of the putty.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides putty which comprises the following raw materials in parts by weight:
20-30 parts of sierozem powder, 40-50 parts of coarse whiting powder, 20-30 parts of attapulgite, 6-8 parts of cellulose, 20-25 parts of rubber powder and 1-2 parts of formaldehyde degradation catalyst material.
The invention provides a preparation process of putty, which comprises the following steps:
putting the attapulgite into 3-5mol/L hydrochloric acid solution during stirring, continuously stirring for 5-6 hours, carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 7-8 by using ammonia water, and drying;
the coarse whiting powder, the sierozem powder, the cellulose, the rubber powder, the formaldehyde degrading catalyst material and the attapulgite are dispersed for 40-60 minutes at the rotating speed of 500-900 r/min.
The preparation process of the putty and the putty provided by the embodiment of the invention at least has the following beneficial effects:
after the putty is hydrated, a large amount of water is evaporated outwards in the scraping and coating process, a large amount of mutually communicated pore networks are formed in the putty slurry under the synergistic action of the ash calcium powder, the cellulose and the rubber powder, and free water in pores generates capillary pressure due to surface tension, so that particles in the putty are more compact, the strength is obtained, and the effect is enhanced when the putty slurry is further dried. The highly dispersed colloid particles in the putty slurry are separated by the diffusion water layer, and when the moisture is gradually reduced, the diffusion water layer is gradually thinned, so that the colloid particles are mutually bonded under the action of molecular force to form a spatial network with a condensation structure, thereby obtaining the strength. The sierozem powder and the rubber powder have the functions of water resistance and water resistance besides the function of bonding in the putty powder, and avoid uneven expansion or contraction of the putty caused by factors such as external temperature and humidity change and the like, so that fine cracks are caused by local stress. In addition, the ash calcium powder absorbs water from cellulose and is continuously hydrated, meanwhile, polymer particles in the putty are mutually bonded, a film is formed on the peripheral surfaces of compounds such as the ash calcium powder, the bonding force among hydration products and between the hydration products and the ash calcium powder is enhanced, and the adsorption bonding force of the putty is greatly improved.
In addition, the cellulose is a water-retaining agent with excellent water-retaining property, and besides the excellent water-retaining property, the cellulose can also improve the workability of putty and prolong the setting time to a proper extent, and is widely applied to putty products. Different types of cellulose are used in a composite way, and the main functions of the composite are as follows: the water retention performance is improved. When the water-retaining agent is used on a high-water-absorption base material, the excellent water-retaining property of the water-retaining agent can ensure that the cementing material has enough water to be properly cured so as to achieve high mechanical strength, so that the surface is smooth and is not easy to crack; furthermore, the water retention performance is improved, so that the operable time is obviously prolonged, the construction period and the cost are saved, and the putty loss is also avoided. And the workability and the working efficiency are improved. The cellulose can ensure that the lubricating property among the dispersed particles is high, the particles are uniformly dispersed, and agglomeration is avoided, so that the putty is smoother and more uniform. The surface after construction is smooth, and the working efficiency and the operating performance are improved. Because it ensures the putty to have even consistency and plasticity, thereby enhancing the operation performance of the putty, facilitating the construction and having more ideal smearing and leveling effects. Improving the consistency and the anti-sagging property. The adhesion of the plastering slurry is very important to the construction process and the finished appearance, and the cellulose can improve the consistency of the mortar, enhance the adhesion performance to different surfaces and ensure the finished appearance. The sagging resistance is important for the finishing effect, and the cellulose improves the consistency of the mortar, and after being coated, the mortar can be firmly attached to a substrate without sagging, so that the plastering mortar can be attached to a wall and not attached to a spatula.
The filler such as heavy calcium carbonate, attapulgite and the like plays a role of a framework and filling in the putty and bears most of external load of the putty, so the particle size of the filler influences the plasticity of the putty and the mechanical property of a hardened body of the putty. Drying and moisture absorption of the putty during the hardening process can cause the change of the water content in the putty and the change of the volume. The absorption or loss of water molecules between the gray calcium gel particles changes the cohesive force of the gel particles, changes the surface tension between the particles, and causes micro-deformation, usually manifested as cracks. However, this tension is only present between the grey calcium particles and the filler is much more stable. The presence of the filler limits the dry shrinkage and wet swelling deformation. The nanometer size of the formaldehyde catalyst material is degraded, so that the formaldehyde catalyst material has the characteristics of surface effect, small-size effect, quantum confinement effect and the like which are different from macroscopic substances, and the characteristics of alternate concavo-convex shape, porous crystal and strong adsorption force of the surface of the attapulgite crystal are utilized, so that the formaldehyde catalyst material can contact the ambient air to a great extent, passively adsorb some harmful gases into pores, and synergistically act with the formaldehyde catalyst material to enhance formaldehyde adsorbed by putty, decompose peculiar smell and ensure human health.
The materials are reasonably matched, and the base materials such as the ash calcium powder and the like, the filler and the auxiliary agent have synergistic effect, so that the quality of the putty is improved, and the bonding strength and the adhesive force of a putty base layer are improved. Meanwhile, the sierozem powder and the rubber powder form a firm waterproof bottom-sealing putty-scraping layer which can shield the penetration and corrosion of moisture, thereby overcoming the defects that the common putty of the coating is easy to generate powder falling, peeling and cracking. In addition, the formaldehyde degrading catalyst material contained in the putty can adsorb harmful substances such as formaldehyde in the air, and is beneficial to human health.
The natural attapulgite has certain mineralogy limitation, and the performance of colloid, adsorbability and the like of the attapulgite is greatly influenced because the minerals contain commensurable impurities and the overall physical and chemical performance is weakened. In order to improve the quality of the attapulgite clay, the attapulgite clay is activated by adopting hydrochloric acid treatment in the embodiment of the invention, so as to remove argillaceous impurities, carbonate and other impurities in raw clay minerals, dredge pores, increase the internal surface area of the attapulgite clay, improve the reaction activity of the attapulgite clay, enhance the capability of adsorbing volatile harmful gases such as formaldehyde, ammonia and the like, and ensure the health of human bodies.
Finally, the coarse whiting powder, the sierozem powder, the attapulgite, the cellulose, the rubber powder and the formaldehyde degradation catalyst material are dispersed for 40 to 60 minutes at the rotating speed of 500 plus materials and 900 r/min. The effect on the raw materials is gentle at the speed of 500-900r/min, so that the actual quality reduction caused by the flying of particles from the stirring container is avoided, and the actual metering of the formula is changed to change the performance of the finally obtained putty. Stirring for 40-60 min to raise the dispersivity of the putty and obtain putty with excellent performance.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The invention provides putty which comprises the following raw materials in parts by weight:
20-30 parts of sierozem powder, 40-50 parts of coarse whiting powder, 20-30 parts of attapulgite, 6-8 parts of cellulose, 20-25 parts of rubber powder and 1-2 parts of formaldehyde degradation catalyst material.
The ash calcium powder is an inorganic air-hardening gelled putty and is formed by digesting calcium oxide of quicklime by a digester. The putty slurry after the ash calcium powder is hydrated absorbs carbon dioxide gas from the air to form calcium carbonate. The calcium carbonate crystal forms a closely interlaced crystal network in the process of forming, thereby improving the strength of the putty slurry, simultaneously leading the putty to have certain water-resistant function, improving the crack resistance of the putty, and the like. The solid volume of calcium carbonate is slightly greater than that of calcium hydroxide, making the hardened putty slurry stronger. The glue powder can be used as filler of putty, effectively improves the bonding strength and water resistance of the putty, and the synergistic effect of the glue powder and the lime calcium enables the putty to become a compact whole and be firmly attached to a wall body. The proper amount of the water-retaining agent and the trace amount of the anti-cracking agent improve the workability, the crack resistance and the like of the putty layer, and can slow down the peeling and falling phenomena of the exterior wall coating when being used for scraping exterior walls.
Cellulose is one of the most abundant natural polymer putty in nature, and cellulose colloid has strong thixotropy. Meanwhile, the water-retaining putty with the cellulose as the effect can obviously improve the batch scraping performance of the putty, and if the cellulose is not used in the rubber powder, the prepared putty cannot be batch scraped. The surface of the nano-cellulose has exposed hydroxyl groups which can form hydrogen bonding effect, and the nano-cellulose is mutually crosslinked to form a stable three-dimensional network structure due to strong hydrogen bonding effect, so that the coating can be endowed with unique rheological property and high dispersibility, and the nano-cellulose can exist in a solvent system in a stable colloid form and has good thixotropy. Optionally, the cellulose comprises one or more of carboxymethyl cellulose, microcrystalline cellulose and methyl cellulose. In the embodiment of the invention, the cellulose is carboxymethyl cellulose and microcrystalline cellulose, and the addition of the carboxymethyl cellulose and the microcrystalline cellulose increases the consistency of putty slurry, gas is difficult to discharge, tiny air beads are formed, and the air beads obstruct capillary channels and reduce the evaporation of free water. Furthermore, the hydrophilic structure in the molecular chain and water form hydrogen bonds under the synergistic effect of the hydrophilic structure and the water, so that the water is absorbed in the molecular chain, and meanwhile, the three-dimensional network structure formed by the criss-cross molecular chains binds the water in the molecular chain. The higher the concentration of cellulose, the more molecular chains, the greater the amount of water absorbed, and at the same time, the denser the network structure formed, the greater the water retention capacity.
When water is added into the putty and the putty powder is stirred, the particles uniformly distributed in the putty powder are dispersed in water, the cellulose in the putty powder is quickly swelled in the water and intertwined with each other to form a continuous cellulose network structure, other particles in the system are all enclosed in the network structure, and the system has high viscosity. In this system, as the sierozem powder is hydrated, sierozem powder gel is gradually formed, and sierozem powder (calcium hydroxide) in the liquid phase reaches a saturated state. Meanwhile, both the latex powder particles and the cellulose are deposited on the surfaces of the sierozem powder gel (which may contain unhydrated sierozem powder) and the filler particles. With the change of water consumption, the gel structure of the sierozem powder is changed, the latex powder particles are gradually limited in capillary pores, and the cellulose is gradually dried and shrunk and is mixed in the latex powder particles. As hydration proceeds, the amount of water in the capillary pores decreases and the latex powder particles flocculate with the fibrous cellulose. A polymer sealing layer is formed on the surface of the hydrated gel (comprising unhydrated sierozem powder particles), and the polymer sealing layer also bonds the surface of the aggregate particles and the surface of the mixture of the sierozem powder hydrated gel and the sierozem powder particles. Thus, the larger pores in the mixture are filled with the adhesive polymer. As the hydration process is continuously carried out, the moisture between the polymers which are agglomerated together is gradually absorbed into the chemically combined water in the hydration process, and finally the latex powder particles are completely melted together, and the cellulose is distributed therein to form a continuous polymer net structure. The polymer net structure connects the ash calcium powder hydrate together, i.e. the ash calcium powder hydrate and the polymer are intertwined together and surround the filler particles, thereby improving the structural form of the putty. Compared with the common polymer film, the composite matrix phase film formed by the polymer and the inorganic particles has better mechanical property, and greatly increases the bonding strength of the putty.
Further, the rubber powder is redispersible latex powder. The redispersible latex powder is a polymer latex powder which can be redispersed in water by adding water to generate stable dispersion and has the original polymer emulsion performance. The addition of the redispersible latex powder into the putty can improve the tensile strength, elasticity, flexibility and sealing property of the putty. The addition of the redispersible latex powder is a part of the polymer film forming structure, so that the putty structure is sealed, the latex film has a self-stretching mechanism, and can apply tension to the anchoring part of the latex film and the putty, and the cohesion of the putty is improved through the action of the internal force. The redispersible latex powder can avoid the difference of application performance of products, reduce the packaging and transportation cost (save water transportation), has good freeze-thaw stability and does not need to consider the corrosion factor of microorganisms. Meanwhile, the method also has the advantages of unique environmental protection, no volatilization of organic matters and pollution reduction.
The sierozem powder and the rubber powder have the functions of water resistance and water resistance besides the function of bonding in the putty powder, and avoid uneven expansion or contraction of the putty caused by factors such as external temperature and humidity change and the like, so that fine cracks are caused by local stress. The sierozem powder, the cellulose and the attapulgite are added as the auxiliary agents to improve the water retention property, thickening property, scraping property and the like of the putty, improve the workability, crack resistance and the like of a putty layer, and can slow down the peeling and falling phenomena of the exterior wall coating when being used for scraping exterior walls. The putty is characterized in that the putty is made of a putty material, and the putty material is characterized in that cellulose is doped into the putty material, water molecules and hydrophilic groups on a cellulose molecular structure are combined with each other to introduce micro bubbles, the micro bubbles have a roller effect and are beneficial to putty batch scraping, and after the putty material is hardened, some bubbles still exist to form independent pores, so that the phenomenon that water is evaporated too fast is prevented, and the surface drying time of the putty material is prolonged. And when the putty is doped with the cellulose, hydration products such as calcium hydroxide in the ash calcium powder, putty slurry gel and the like are adsorbed with cellulose molecules, so that the viscosity of the pore solution is increased, the activity of ions in the pore solution is reduced, and the hydration process of the cement is further delayed.
The heavy calcium, i.e. ground calcium carbonate, is prepared by grinding natural carbonate minerals such as calcite, marble, limestone and the like, is a common powdery inorganic filler, and has the advantages of high chemical purity, large inertness, difficult chemical reaction, good thermal stability, no toxicity, good dispersibility and the like. Except some high-grade lustrous coatings, the heavy calcium carbonate has a large number of applications in various interior and exterior wall coatings and putty, has stable performance, mainly plays a role in reducing cost and filling, can increase the system of the putty, has small oil absorption, can obtain the putty with proper bonding strength by only needing less latex powder, and is the most widely used filler. Meanwhile, the addition of the heavy calcium can increase the thickness and the solid content of the putty and expand the physique of the putty, and the microparticles of the heavy calcium have flat structures, so that the durability, the smoothness, the waterproofness and the like of the putty can be improved.
The attapulgite is also called palygorskite and is a layer chain knotThe water-containing magnesium-rich aluminosilicate clay mineral has fine crystal grains (about 0.5-5 microns in length and about 0.05-0.1 micron in width), fine soil texture, smooth feeling of grease, and small relative density (about 1.6 kg/m)3) The water-absorbing paint is brittle (Mohs hardness is 2-3 grade), viscous and plastic when being wet, has small dry shrinkage, does not crack, and has strong water absorption which can reach more than 150 percent. Due to the unique microstructure, appearance (needle shape, rod shape) and charge property (silicon in tetrahedron can be replaced by aluminum, magnesium (aluminum) in octahedron can be replaced by homovalent or low-valent cations, so that electronegativity is generated), the material has many excellent performances such as colloid property, adsorption property and caking property. For example, the attapulgite crystal has alternate surface convexo-concave surfaces and porous crystals with strong adsorption property, can contact with ambient air to a great extent, passively adsorb some harmful gases into pores, can achieve the effects of adsorbing formaldehyde and removing peculiar smell, and ensures human health.
The filler such as heavy calcium carbonate, attapulgite and the like plays a role of a framework and filling in the putty and bears most of external load of the putty, so the particle size of the filler influences the plasticity of the putty and the mechanical property of a hardened body of the putty. Drying and moisture absorption of the putty during the hardening process can cause the change of the water content in the putty and the change of the volume. The absorption or loss of water molecules between the gray calcium gel particles changes the cohesive force of the gel particles, changes the surface tension between the particles, and causes micro-deformation, usually manifested as cracks. However, this tension is only present between the grey calcium particles and the filler is much more stable. The presence of the filler limits the dry shrinkage and wet expansion deformation of the putty. In detail, the particle size of the heavy calcium powder and the attapulgite is 200-600 meshes.
In the construction process of the putty, the common problems are foaming, cracking and yellowing, and any quality problem caused by poor treatment cannot be covered or repaired by a subsequent coating layer. However, these problems can be changed by appropriate matching of filler particle size and the like. For example, cracking is actually an energy consuming process, and propagation stops when the energy is reduced to a level insufficient to continue the crack. In the process of crack development, the expansion of the crack is hindered or turned by the blocking of the filler in the putty, and the blocking and turning of the crack in the process of crack development are facilitated by selecting the fillers with different grain size grading, so that certain energy is consumed, and the expansion degree of the crack is reduced. In the embodiment of the invention, the fineness of the coarse whiting powder is 500 meshes, and the fineness of the attapulgite is 425 meshes. The heavy calcium powder and the attapulgite are used as fillers and are important components of the putty, and the synergistic effect between the heavy calcium powder and the attapulgite can relieve the cracking of the putty, change the rheological property, the sealing property, the mechanical property and the like of the putty, greatly reduce the cost of the putty, and increase the consistency and the hardness of the putty. In addition, the thermal expansion coefficient can be reduced, the shrinkage performance is reduced, and the toughness and other physical properties of the putty are improved.
Further, the attapulgite of the present invention has a whiteness of not less than 75. The low-grade attapulgite has high content of impurities, the appearance of the low-grade attapulgite is grey, and the whiteness of the putty is greatly influenced due to the large using amount of the low-grade attapulgite in the putty. When the whiteness is not less than 75, the overall comprehensive whiteness of the putty can be improved, the dry film covering power of the putty is improved, the putty can be used for replacing a coating, and the influence of overlarge ground color of the putty on the purity of the paint color can be avoided.
The problem of indoor air pollution caused by indoor decoration is increasingly paid attention to by people. In order to solve the problem that harmful substances such as formaldehyde, volatile organic compounds, ammonia, oxygen and the like in the air exceed the standard when the decoration material is used, the putty raw material also comprises one or more formaldehyde degrading catalyst materials of nano titanium dioxide, nano zinc oxide and zinc oxide whiskers. The nano material is generally composed of particles between 1 and 100nm, and is a mesoscopic system between a macroscopic substance and a transition region between microscopic atoms and molecules. The nano particles have the basic characteristics of surface effect, quantum size effect, macroscopic quantum tunneling effect, dielectric confinement effect and the like. These effects lead to nanomaterials that exhibit exceptional properties in many physical and chemical aspects, such as optical properties, chemical reactivity, magnetism, superconductivity, and plastic deformation. In detail, the particle size of the formaldehyde degrading catalyst material is 5-10 nanometers. The nano photocatalysis technology is an air purification technology developed in recent years, and has the advantages of mild reaction conditions, low energy consumption, less secondary pollution, capability of oxidizing and decomposing organic matters with stable structures at normal temperature and normal pressure and the like, thereby becoming a hotspot for researching and developing air pollution treatment technologies. In practical application, the photocatalyst is selected from various factors such as cost, chemical stability, anti-light corrosion capability, light matching property and the like.
In the embodiment of the invention, the photocatalytic oxidation method usually uses 10-nanometer titanium dioxide as a catalyst, and the titanium dioxide generates active hydroxyl radicals under ultraviolet illumination, selectively oxidizes organic matters, can degrade various organic matters simultaneously, and has the functions of sterilization and disinfection. When the formaldehyde gas is degraded, the active hydroxyl free radical and the superoxide anion free radical jointly play an oxidation role, the formaldehyde is firstly oxidized into hydroxy acid, and finally degraded into carbon dioxide and water. Optionally, the zinc oxide has abundant structure and morphology controllability, and can be grown into single crystal microfibers with a four-needle structure under certain conditions, namely four-needle zinc oxide whiskers. The zinc oxide or zinc oxide whisker photocatalyst is excited by ultraviolet light, electrons on a valence band jump to a conduction band to generate photoproduction electrons and photoproduction holes with strong oxidizing property, and the photoproduction holes and water molecules adsorbed on the surface of the zinc oxide react to generate hydroxyl radicals; the photoproduction cavity and hydroxyl molecules adsorbed on the surface of the zinc oxide react to generate hydroxyl radicals; the hydroxyl radical and hydrogen in the formaldehyde generate hydroxyl radical, the hydroxyl radical is further oxidized into carboxylic acid, and the carboxylic acid is further oxidized and decomposed into carbon dioxide and water. Of course, in other embodiments, the three substances may be used in combination, and the synergistic effect between the materials is utilized to improve the performance of the material in absorbing harmful gases. In addition, the attapulgite crystal has alternate concave and convex surfaces, is porous and has strong adsorption property, can contact with ambient air to a great extent, passively adsorbs some harmful gases into pores, has synergistic effect with a formaldehyde degradation catalyst material, and enhances formaldehyde adsorbed by the putty by means of combining physical adsorption and photodecomposition, thereby having the effect of decomposing peculiar smell and ensuring human health.
The putty compounded by the substances has reasonable component proportion, improves the quality of the putty and improves the bonding strength and the adhesive force of a putty base layer by utilizing the synergistic effect of the base materials such as the ash calcium powder and the like, the filler and the auxiliary agent. The sierozem powder and the rubber powder form a firm waterproof bottom-sealing putty-scraping layer which can shield the penetration and corrosion of moisture, thereby overcoming the defects that the common putty of the coating is easy to generate powder falling, peeling and cracking. In addition, the formaldehyde degrading catalyst material contained in the putty can adsorb harmful substances such as formaldehyde in the air, and is beneficial to human health. Through multiple tests, when the ash calcium powder is 20 parts, the heavy calcium powder is 40 parts, the attapulgite is 20 parts, the cellulose is 6-8 parts, the rubber powder is 20-25 parts, and the formaldehyde degradation catalyst material is 1 part, the adhesive strength and the adhesive force of the putty are good, and the workability, the crack resistance and the like of a putty layer are improved.
Further, the putty also comprises the following raw materials in parts by weight: 0.1-1 part of photogemini surfactant, 0.1-1 part of polysiloxane and 5-6 parts of polyvinyl alcohol.
In order to improve the greasiness and the dispersibility of the powder, a proper amount of wetting agent, dispersant and the like are added into the building glue, and a photogemini surfactant is adopted in the embodiment of the invention. The smooth gemini surfactant is based on two same amphiphilic molecules which are associated together through a bridging group, the surfactant has higher surface activity, the effect is very remarkable in the aspect of reducing the surface tension, water has better wettability on powder when the powder is used for preparing putty, the powder cannot generate particles and small powder aggregates which are male and dispersed, the state of the putty is good, the appearance is finer and finer, the smoothness of the putty film after drying can be improved, and the water consumption of the putty can be reduced. The putty is scraped on the surface of a wall layer by a spatula, if the first layer foams when the putty is smeared, the foams are always remained on the surface of the wall, some foams can be broken, some foams can still stay on the surface after being dried, the putty is 'stubborn disease' in the process of smearing the putty in batches, in order to prolong the service life of the putty, defoaming agent polysiloxane is added in the formula of the putty, Si-O bonds in polymers of the polysiloxane are quite flexible, a silica framework provides a high spreading coefficient, and methyl groups provide hydrophobicity and low surface tension. These characteristics make silicone defoamers very efficient. And the polysiloxane can also be modified to improve the compatibility, such as modification with polyether chains can improve the hydrophilicity of polydimethylsiloxane, thus improving the compatibility in polar systems. In order to improve the toughness of the gray calcium-based putty, polyvinyl alcohol powder can be added into the formula, the polyvinyl alcohol is a water-soluble high-molecular polymer and has good film-forming property, and after the putty is hardened, a polymer film formed by the polyvinyl alcohol can improve the cohesion, the adhesion, the flexibility and the cracking resistance of the putty.
The invention provides a preparation process of putty, which comprises the following steps:
putting the attapulgite into 3-5mol/L hydrochloric acid solution during stirring, continuously stirring for 5-6 hours, carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 7-8 by using ammonia water, and drying; the coarse whiting powder, the sierozem powder, the cellulose, the rubber powder, the formaldehyde degrading catalyst material and the attapulgite are dispersed for 40-60 minutes at the rotating speed of 500-900 r/min.
The natural attapulgite has certain mineralogy limitation, the crystal boundary of the attapulgite raw soil mineral is fuzzy, more argillaceous impurities exist, and the overall physical and chemical properties are weakened, so that the colloid property, the adsorbability and the like of the attapulgite are greatly influenced. After acid treatment, not only can remove argillaceous impurities and carbonate impurities in raw soil minerals, but also can dredge holes and increase the inner surface area of the attapulgite, so that the capability of adsorbing volatile harmful gases such as formaldehyde, ammonia and the like is enhanced, and the health of human bodies is ensured. In addition, when the attapulgite is treated with acid for a while, hydrogen ions first replace metal cations such as aluminum, iron, magnesium and the like in tetrahedrons on the surface of the attapulgite to form colloidal silica-hydroxysilicate minerals with reactive surfaces, and as the acid is further eroded, octahedral cations inside the attapulgite crystals have higher exchange activity and faster dissolution rate than cations in the tetrahedrons. Due to the uneven and discontinuous dissolution of the attapulgite, the inner pore canal of the attapulgite is opened, the aperture is increased, and acidic protons can enter the inner pore canal of the attapulgite to replace cations on octahedral positions to form reactive silicon hydroxyl groups. However, increasing the acid strength and concentration and prolonging the reaction time results in complete dissolution of cations in the octahedral sites of the attapulgite, and the attapulgite is converted into amorphous silica having a needle-like morphology. Therefore, in the acid treatment of attapulgite, the concentration of strong acid and the reaction time must be controlled well to obtain attapulgite having good performance. Therefore, the comprehensive performance of the attapulgite obtained after the attapulgite is placed in 3-5mol/L hydrochloric acid solution and stirred for 5-6 hours is the best. And then, carrying out suction filtration on the attapulgite suspension, washing a filter cake, adjusting the pH value to 7-8 by using ammonia water, and then drying to avoid adding the attapulgite suspension into the next procedure to cause the peracid in the solution environment to influence the hydration process of the putty.
Finally, the coarse whiting powder, the sierozem powder, the attapulgite, the cellulose, the rubber powder and the formaldehyde degradation catalyst material are dispersed for 40 to 60 minutes at the rotating speed of 500 plus materials and 900 r/min. The effect on the raw materials is gentle at the speed of 500-900r/min, so that the actual quality reduction caused by the flying of particles from the stirring container is avoided, and the actual metering of the formula is changed to change the performance of the finally obtained putty. Stirring for 40-60 min to raise the dispersivity of the putty and obtain putty with excellent performance.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides putty, which mainly comprises the following raw materials:
20kg of sierozem powder, 40kg of heavy calcium powder, 20kg of attapulgite, 3kg of microcrystalline cellulose, 3kg of methyl cellulose, 20kg of rubber powder, 1kg of nano titanium dioxide, 0.1kg of photo-gemini surfactant, 0.1kg of polysiloxane and 5kg of polyvinyl alcohol.
The preparation process of the putty comprises the following steps:
putting the attapulgite into 3mol/L hydrochloric acid solution during stirring, continuously stirring for 5 hours, then carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 7 by using ammonia water, and drying;
the remaining raw materials and the above-mentioned attapulgite were dispersed at a rotation speed of 500r/min for 40 minutes.
Example 2
The embodiment provides putty, which mainly comprises the following raw materials:
30kg of sierozem powder, 50kg of heavy calcium powder, 30kg of attapulgite, 3kg of carboxymethyl cellulose, 2.5kg of microcrystalline cellulose, 2.5kg of methyl cellulose, 25kg of rubber powder, 2kg of nano zinc oxide, 1kg of photo-gemini surfactant, 1kg of polysiloxane and 6kg of polyvinyl alcohol.
The preparation process of the putty comprises the following steps:
putting the attapulgite into 5mol/L hydrochloric acid solution during stirring, continuously stirring for 6 hours, then carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 8 by using ammonia water, and drying;
the remaining raw materials and the above-mentioned attapulgite were dispersed at a rotation speed of 900r/min for 60 minutes.
Example 3
The embodiment provides putty, which mainly comprises the following raw materials:
21kg of sierozem powder, 41kg of heavy calcium powder, 21kg of attapulgite, 6kg of carboxymethyl cellulose, 20kg of rubber powder, 0.8kg of titanium dioxide, 0.7kg of nano zinc oxide, 0.5kg of photo-gemini surfactant, 0.5kg of polysiloxane and 5.5kg of polyvinyl alcohol.
The preparation process of the putty comprises the following steps:
putting the attapulgite into 3.5mol/L hydrochloric acid solution during stirring, continuously stirring for 330 minutes, carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 7.5 by using ammonia water, and drying;
the remaining raw materials and the above-mentioned attapulgite were dispersed at a rotation speed of 700r/min for 45 minutes.
Example 4
The embodiment provides putty, which mainly comprises the following raw materials:
21kg of sierozem powder, 41kg of heavy calcium powder, 21kg of attapulgite, 2kg of carboxymethyl cellulose, 3kg of methyl cellulose, 21kg of redispersible latex powder and 1kg of nano zinc oxide whisker.
The preparation process of the putty comprises the following steps:
putting the attapulgite into 4.5mol/L hydrochloric acid solution during stirring, continuously stirring for 340 minutes, carrying out suction filtration on a suspension of the attapulgite, washing a filter cake, adjusting the pH value to 7.2 by using ammonia water, and drying;
the remaining raw materials and the above-mentioned attapulgite were dispersed at a rotation speed of 750r/min for 50 minutes.
Example 5
The embodiment provides putty, which mainly comprises the following raw materials:
22kg of sierozem powder, 42kg of heavy calcium powder, 22kg of attapulgite, 2kg of carboxymethyl cellulose, 3kg of microcrystalline cellulose, 3kg of methyl cellulose, 22kg of redispersible latex powder, 0.6kg of nano titanium dioxide and 0.6kg of nano zinc oxide.
The preparation process of the putty comprises the following steps:
putting the attapulgite into a 4mol/L hydrochloric acid solution during stirring, continuously stirring for 320 minutes, carrying out suction filtration on a suspension of the attapulgite, washing a filter cake, adjusting the pH value to 7.8 by using ammonia water, and drying;
the remaining raw materials and the above-mentioned attapulgite were dispersed at a rotation speed of 650r/min for 55 minutes.
Effect example 1
After the putties of examples 1-5 were hydrated, the thickness, water retention and strength of the mortar were measured strictly according to the relevant specifications of "standards for testing basic performance of building mortar", and the results are shown in table 1.
TABLE 1 putty Performance test results
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Consistency of | 6.4 | 6.4 | 6.5 | 6.4 | 6..5 |
| Workability | Good taste | Good taste | Good taste | Good taste | Good taste |
| Drying/tack-free time (h) | 4.3 | 4.4 | 4 | 4 | 4.5 |
| Initial drying crack resistance (6h) | Is not cracked | Is not cracked | Is not cracked | Is not cracked | Is not cracked |
| Sanding property | Can be polished to produce powder | Can be polished to produce powder | Can be polished to produce powder | Can be polished to produce powder | Can be polished to produce powder |
| Water absorption capacity (g/10min) | 1.5 | 1.6 | 1.4 | 1.4 | 1.7 |
| Water resistance (96h) | No abnormality | No abnormality | No abnormality | No abnormality | No abnormality |
| Alkali resistance (48h) | No abnormality | No abnormality | No abnormality | No abnormality | No abnormality |
| Strength (MPa) | 1.43 | 1.44 | 1.42 | 1.43 | 1.45 |
As can be seen from the test data in Table 1, the putty provided by the invention has various performances superior to the industry standard value of the putty for buildings, which shows that the putty has excellent comprehensive performance and good construction performance, water resistance and alkali resistance. As can be seen from the comparison between the items of the putty in the embodiments 1 to 5, the application of the composite cellulose is more beneficial to the water retention of the putty, and the addition of the rubber powder, the cellulose and the polyvinyl alcohol is beneficial to the adhesion among the substances of the putty, thereby improving the strength of the putty.
Effect example 2
After the putty of the embodiment 1-5 is hydrated, the purification efficiency and the purification durability of the putty for purifying formaldehyde are tested according to the relevant regulation specification of indoor air purification function coating material purification performance, and the detection results are shown in table 2.
TABLE 2 Performance test results for putty purifying Formaldehyde
| Item | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Purification efficiency | 71％ | 74％ | 80％ | 70％ | 78％ |
| Durability | 60％ | 61％ | 65％ | 62％ | 64％ |
As can be seen from the test data in Table 2, the putty provided by the invention has a certain formaldehyde purification effect and has good durability. Through comparison of experimental data of examples 1-5, it can be known that the composite use of different types of formaldehyde degrading catalyst materials can not only improve the purification efficiency, but also improve the purification durability.
It should be noted that the putty and the preparation process thereof provided by the invention are not only applicable to the technical field of putty building materials, but also can be applied to the technical fields of coatings, paints and the like, and are not limited as long as the effect of degrading formaldehyde can be achieved.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The putty is characterized by comprising the following raw materials in parts by weight:
20-30 parts of sierozem powder, 40-50 parts of coarse whiting powder, 20-30 parts of attapulgite, 6-8 parts of cellulose, 20-25 parts of rubber powder and 1-2 parts of formaldehyde degradation catalyst material.
2. The putty as set forth in claim 1, comprising the following raw materials in parts by weight:
20 parts of sierozem powder, 40 parts of coarse whiting powder, 20 parts of attapulgite, 6-8 parts of cellulose, 20-25 parts of rubber powder and 1 part of formaldehyde degradation catalyst material.
3. The putty as set forth in claim 1 or claim 2, wherein the formaldehyde degrading catalyst material comprises one or more of nano titanium dioxide, nano zinc oxide and zinc oxide whiskers.
4. The putty as set forth in claim 3, wherein the particle size of the formaldehyde degrading catalyst material is in the range of 5-10 nm.
5. The putty as set forth in claim 1 or claim 2, wherein the cellulose comprises one or more of carboxymethyl cellulose, microcrystalline cellulose and methyl cellulose.
6. The putty as set forth in claim 1, wherein the coarse whiting powder and the attapulgite have a particle size of 200-600 mesh.
7. The putty as set forth in claim 1, wherein the rubber powder is a redispersible latex powder.
8. The putty as claimed in claim 1 or 2, further comprising the following raw materials in parts by weight:
0.1-1 part of photogemini surfactant, 0.1-1 part of polysiloxane and 5-6 parts of polyvinyl alcohol.
9. The putty as set forth in claim 1 wherein the attapulgite has a whiteness value of not less than 75.
10. A preparation process for manufacturing the putty according to any one of claims 1 to 8, characterised in that it comprises the following steps:
putting the attapulgite into 3-5mol/L hydrochloric acid solution during stirring, continuously stirring for 5-6 hours, carrying out suction filtration on a turbid liquid of the attapulgite, washing a filter cake, adjusting the pH value to 7-8 by using ammonia water, and drying;
the coarse whiting powder, the sierozem powder, the cellulose, the rubber powder, the formaldehyde degrading catalyst material and the attapulgite are dispersed for 40-60 minutes at the rotating speed of 500-900 r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110329159.8A CN112980233A (en) | 2021-03-27 | 2021-03-27 | Putty and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110329159.8A CN112980233A (en) | 2021-03-27 | 2021-03-27 | Putty and preparation process thereof |
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| CN112980233A true CN112980233A (en) | 2021-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881270A (en) * | 2021-10-26 | 2022-01-04 | 胡广平 | Environment-friendly ecological building material and preparation method thereof |
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2021
- 2021-03-27 CN CN202110329159.8A patent/CN112980233A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113881270A (en) * | 2021-10-26 | 2022-01-04 | 胡广平 | Environment-friendly ecological building material and preparation method thereof |
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