DK158742B - Protective coating layer - Google Patents
Protective coating layer Download PDFInfo
- Publication number
- DK158742B DK158742B DK267083A DK267083A DK158742B DK 158742 B DK158742 B DK 158742B DK 267083 A DK267083 A DK 267083A DK 267083 A DK267083 A DK 267083A DK 158742 B DK158742 B DK 158742B
- Authority
- DK
- Denmark
- Prior art keywords
- gypsum
- cement
- water
- coating layer
- protective coating
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/28—Polysaccharides or derivatives thereof
- C04B26/285—Cellulose or derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/14—Macromolecular materials
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/22—Materials not provided for elsewhere for dust-laying or dust-absorbing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Materials For Medical Uses (AREA)
Description
DK 158742BDK 158742B
iin
Beskyttende belægningslag.Protective coating layer.
55
Den foreliggende opfindelse angår et beskyttelsesbelægningslag til at forhindre støvning og/eller vandudludning og/eller spredning af ild.The present invention relates to a protective coating layer for preventing dusting and / or water leaching and / or spreading of fire.
Formålet med den foreliggende opfindelse er at tilvejebringe en mulighed for at forhindre støvning, påvirkning af vand eller spredning af ild ved at belægge produkter og genstande med et i og for sig mekanisk let forcerbart beskyttelseslag.The object of the present invention is to provide an opportunity to prevent dusting, impacting of water or the spread of fire by coating products and articles with an inherently mechanically malleable protective layer.
15 I industrien tvinges man ofte til lagring udendørs af støvende produkter, hvorved omgivelserne ved blæst let 20 tilsmudses. Desuden forekommer lagring udendørs af såvel støvende som ikke støvende produkter, hvor regn og sne kan medfører skader på produkterne eller udludning af toksiske stoffer eller stoffer, der er beregnet til at give produkterne en bestemt egenskab. Eksempelvis lagres 25 der udendørs store mængder grus og sand som er beregnet til bekæmpning af glatte veje om vinteren. Dette grus er blandet med salt for at forhindre sammenfrysning af bunkerne og deraf følgende utilgængelighed af gruset/sandet. Imidlertid medfører varierende perioder med nedbør og tø, at 30 vandet passerer gennem bunkerne og dermed udluder saltet, hvorved frostbeskyttelsen elimineres, og bunkerne fryser sammen.15 In the industry, outdoor storage is often forced by dusty products, thereby easily polluting the surrounding environment by blown 20. In addition, outdoor storage of both dusty and non-dusty products occurs where rain and snow can cause damage to the products or leaching of toxic substances or substances intended to give the products a specific property. For example, 25 large quantities of gravel and sand are stored outdoors, which are intended to combat slippery roads in winter. This gravel is mixed with salt to prevent freezing of the piles and consequent unavailability of the gravel / sand. However, varying periods of rainfall and thawing cause the water to pass through the piles, thus excluding the salt, eliminating frost protection and freezing the piles together.
Andre eksempler er oplagring af kul, som ofte støver og til-35 ryger omgivelserne, specielt oplagring i kulgrubberne.Other examples are coal storage, which often dust and smoke the environment, especially storage in the coal pits.
DK 158742 BDK 158742 B
2 I visse tilfælde kan det være ønskeligt at forsyne genstande med ikke-permanent ildskyende lag, f.eks. i forbindelse med svejsningsarbejder op ad let antændeligt materiale.2 In some cases, it may be desirable to provide articles with non-permanent fire-retardant layers, e.g. in connection with welding work on light flammable material.
Der har tidligere foreligget beskyttelseslag til oplagret 5 kul (US,A, 4,269,721), hvor man danner et gipslag på det oplagrede materiale. Gips har imidlertid den ulempe, at det er opløseligt i vand, og beskyttelseslaget vil derfor blive opløst efterhånden, som det udsættes for påvirkning af vand f.eks. i form af nedbør.There have previously been protective layers for stored 5 coal (US, A, 4,269,721), where a plaster layer is formed on the stored material. However, gypsum has the disadvantage that it is soluble in water and therefore the protective layer will dissolve as it is exposed to the influence of water e.g. in the form of rainfall.
10 Andre beskyttelseslag bestående af natriumchlorid, ler og vand kendes (US,A, 3,896,039), men har samme ulemper som gips ved at de er vandopløselige og altså ikke giver beskyttelse ved lagring udendørs. Desuden størkner produkterne ikke tilstrækkeligt hurtigt, hvilket er et andet krav, man 15 må stille ved lagring udendørs.10 Other protective layers consisting of sodium chloride, clay and water are known (US, A, 3,896,039) but have the same disadvantages as gypsum in that they are water-soluble and thus do not provide protection when stored outdoors. In addition, the products do not solidify fast enough, which is another requirement that 15 must be placed when storing outdoors.
Yderligere andre støvhindrende lag kendes (GB,A, 1,245,156, GB,A, 1,267,621 og GB,A 1,267,617), hvorved et hygroskopisk salt, f.eks. gips, blandes med vand og lægges på de produkter, hvis støvning man vil forhindre. Disse lag er ligeledes 20 vandopløselige.Still other dust-preventing layers are known (GB, A, 1,245,156, GB, A, 1,267,621 and GB, A 1,267,617), whereby a hygroscopic salt, e.g. plaster, mixed with water and applied to the products whose dusting you want to prevent. These layers are also 20 water soluble.
En fremgangsmåde til at undertrykke støvning ved brydning af bjergarter kendes fra GB,A, 1,391,115, hvor bjergarten overhældes med en vandig opløsning af polysaccharid, såsom guar-gummi, natriumcarboxylmethylcellulose. Denne opløsning 25 kan give en momentan beskyttelse mod støvning, men giver ingen varig beskyttelse.A method of suppressing dust by breaking rocks is known from GB, A, 1,391,115, wherein the rock is poured over with an aqueous solution of polysaccharide such as guar gum, sodium carboxylmethyl cellulose. This solution 25 can provide instantaneous protection against dusting, but provides no lasting protection.
Et flammebestandigt beskyttelseslag kendes fra SE,A, 7603820-7, hvilket lag består af én uorganisk komponent, som omfatter en vandig opløsning af et alkalimetalsilicat, ler og as-30 bestfibre samt en organisk komponent, som omfatter en vandig 3A flame-resistant protective layer is known from SE, A, 7603820-7, which consists of one inorganic component comprising an aqueous solution of an alkali metal silicate, clay and asbestos fibers, and an organic component comprising an aqueous 3
DK 158742BDK 158742B
opløsning af carboxylmethylcellulose, en stivelsesester 5 og/eller dextrin, hvorved den organiske komponent udgør indtil nogle procent af det samlede materiale. Et sådant materiale har imidlertid bl.a. en alt for lang hærdningstid, >48 timer.solution of carboxyl methyl cellulose, a starch ester 5 and / or dextrin, whereby the organic component constitutes up to some percent of the total material. However, such material has, inter alia, an excessive cure time,> 48 hours.
1010
De krav, som stilles til et beskyttelseslag til udendørs- bekskyttelse, er bl.a., at det effektivt skal beskytte mod væde, helst inden nogle timer, og senest inden 24 timer; at det ikke skal være opløseligt indenfor en rimelig tid, hvilket indebærer 6-8 måneder; at det skal være miljøven-15 ligt og ikke skade det belagte produkt, samt at det skal være let forcerbart, således at lagrede produkter er let tilgængelige. Ved lagring af billige produkter må beskyttelseslaget desuden ikke koste alt for meget.The requirements imposed on a protective layer for outdoor pouch protection are, inter alia, that it must effectively protect against moisture, preferably within a few hours, and at the latest within 24 hours; that it should not be soluble within a reasonable time, which means 6-8 months; that it should be environmentally friendly and not damage the coated product, and that it should be easily malleable so that stored products are readily available. In addition, when storing cheap products, the protective layer must not cost too much.
2o Det har nu overraskende vist sig muligt at opfylde sådanne krav ved hjælp af beskyttelsesbelægningslaget ifølge den foreliggende opfindelse, som er ejendommeligt ved, at det foruden gips omfatter cement og ethylhydroxyethylcellulose, idet vægtforholdet gipsrcement ikke overstiger 6:1, samt en til størk-25 ning af gips og cement nødvendig mængde vand, idet mængden af ethy1hydroxyethy1ce11u1 ose udgør 0,2-3 vægt% af indgående vand, og at det desuden kan indeholde calciumchlorid i en mængde på 0-2 vægt%.Surprisingly, it has now been found possible to meet such requirements by means of the protective coating layer of the present invention, which is characterized in that, in addition to gypsum, it comprises cement and ethyl hydroxyethyl cellulose, the weight ratio of gypsum cement not exceeding 6: 1, gypsum and cement required amount of water, the amount of ethyl hydroxyethylsiluose being 0.2-3% by weight of incoming water and may additionally contain calcium chloride in an amount of 0-2% by weight.
Yderligere ejendommeligheder ved opfindelse fremgår af 30 de efterfølgende patentkrav.Further features of the invention are set forth in the following claims.
Eksempel 1.Example 1.
En 1% vandig opløsning af ethylhydroxyethylcellulose <5) 35 ("Bermocoll" E 481, Berol Kemi, Stenungsund, Sverige) 3 blev fremstillet. I et blandingskar på 7 m anbragtes derpå ialt 5 m^ bestående af 44 dele CaSO^, 21^0, 22 dele cement samt 34 dele af nævnte 1% ethylhydroxyethylcellulose-vandopløsning. Den samlede vægt var 6,7 ton. BlandingenA 1% aqueous solution of ethyl hydroxyethyl cellulose <5) 35 ("Bermocoll" E 481, Berol Kemi, Stenungsund, Sweden) 3 was prepared. Then, in a mixing vessel of 7 m, a total of 5 m 2 consisting of 44 parts of CaSO 2, 21 0, 22 parts of cement and 34 parts of said 1% ethyl hydroxyethyl cellulose aqueous solution were placed. The total weight was 6.7 tonnes. The mixture
DK 158742 BDK 158742 B
4 blev gjort homogen ved omrøring med bladomrørere i en time.4 was made homogeneous by stirring with leaf stirrer for one hour.
Denne opslæmning med en viskositet på ca. 1000 cPs blev 3 sprøjtet over en sandbunke, som indeholdt ca. 1200 m sand, 5 hvorved først toppen og derefter sidderne blev besprøjtet.This slurry having a viscosity of approx. 1000 cps 3 were sprayed over a sand pile containing approx. 1200 m of sand, 5 whereby the top and then the sides were sprayed.
Det pålagte lag tørrede hurtigt og var hårdt efter ca. 11 timers forløb. Beskyttelseslaget havde en middeltykkelse på ca. 5 mm. Beskyttelseslaget var helt stabilt i 20 timer, var praktisk taget uopløseligt i vand og havde efter størk-10 ning en vandpermaeabilitet på 1,10 ^ meter/sekund.The applied layer dried quickly and was hard after approx. 11 hours. The protective layer had a mean thickness of approx. 5 mm. The protective layer was completely stable for 20 hours, was practically insoluble in water and, after solidification, had a water permeability of 1.10 µm / second.
Eksempel A-DExamples A-D
Forskellige belægningslag med andre komponenter blev fremstillet til sammenligning, ifølge nedenstående.Various coating layers with other components were prepared for comparison, as shown below.
A. 200 g H20 15 200 g CaS04, 2H20 100 g Cement 5 g Carboxymethylcellulose B. 240 g H20 60 g CaS04, 2H20 20 20 g Cement 20 g Bentonit C. 40 g α - hemicellulose 20 g Bentonit 140 g CaS04, 2H20 25 200 g H20 D. 175 g H20 200 g CaS04, 2H20 100 g Cement 3 g Carboxymethylcellulose 5A. 200 g H20 15 200 g CaSO4, 2H20 100 g Cement 5 g Carboxymethyl cellulose B. 240 g H20 60 g CaSO4, 2H20 20 20 g Cement 20 g Bentonite C. 40 g α - hemicellulose 20 g Bentonite 140 g CaSO4, 2H20 25 200 g H2 O D. 175 g H2 O 200 g CaSO4, 2H20 100 g Cement 3 g Carboxymethyl cellulose 5
DK 158742BDK 158742B
Materialerne ifølge A og D gav først stabile beskyttelseslag efter mere end 2 døgns forløb. Materialerne ifølge B og C størknede indenfor en rimelig tid på 10-24 timer, men var begge vandopløselige, 5 Ved fremstillingen af materialer ifølge den foreliggende opfindelse tilføres der hensigtsmæssigt blot så meget vand, som bindes af laget ved dets størkning, d.v.s. i hovedsagen optages af cementen. Hensigtsmæssige viskositeter ved tilberedning, transport og påføring er 500-1500 cPs.The materials of A and D first provided stable protective layers after more than 2 days. The materials of B and C solidified within a reasonable time of 10-24 hours, but were both water-soluble. mainly absorbed by the cement. Suitable viscosities in preparation, transport and application are 500-1500 cPs.
10 Ethylhydroxyethylcellulosen, som anvendes som bindemiddel, kan indgå i en mængde på 0,2 - 3% i den vandige opløsning. Ved højere mængder kan man ikke håndtere den vandige opløsning på grund af cellulosederivatets opkvældning.The ethyl hydroxyethyl cellulose used as a binder may be present in an amount of 0.2 - 3% in the aqueous solution. At higher amounts, the aqueous solution cannot be handled due to the swelling of the cellulose derivative.
15 Cementmængden i produktet kan naturligvis være stor, men fordyrer så også produktet mærkbart. Vægtforholdene mellem gips og cement bør være ca. 3si, men aldrig overstige 6:1, da opløseligheden bliver alt for stor, og den fysiske styrke reduceres. Udfra et omkostningssynspunkt bør gipsmængden 20 hensigtsmæssigt ikke være mindre end cementmængden.Of course, the amount of cement in the product can be large, but so does the product noticeably more expensive. The weight ratio of gypsum to cement should be approx. 3si, but never exceed 6: 1 as the solubility becomes too great and the physical strength is reduced. From a cost point of view, the amount of gypsum 20 should conveniently not be less than the amount of cement.
Den ingående gips bør ikke være alt for grovkornet, men hovedsagelig have en partikelstørrelse under 0,25 mm, og med samtlige partikler under 1 mm.The incoming gypsum should not be too coarse, but mainly have a particle size below 0.25 mm and with all particles below 1 mm.
Det i ovennævnte eksempel anførte gips har være en dihydrat 25 gips, CaSO^, 2^0, men anhydrit gips eller semihydrat gips kan ligeledes anvendes. Ved anvendelse af de sidst anførte kvaliteter, sker der en kraftigere størkning og sammenbinding i forbindelse med, at gipsen omdannes til dihydrat-form. Ved anvendelse af anhydrit gips og semi-hydrat gips 30 skal vandmængden på blandingstidspunktet forøges noget.The gypsum mentioned in the above example has a dihydrate gypsum, CaSO 2, 2x0, but anhydrite gypsum or semihydrate gypsum can also be used. By applying the last mentioned qualities, a stronger solidification and bonding occurs when the gypsum is converted to dihydrate form. When using anhydrite gypsum and semi-hydrate gypsum 30, the amount of water at the time of mixing must be increased slightly.
Totalmængden i det færdige lag er dog den samme.However, the total amount in the finished layer is the same.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8203897A SE455308B (en) | 1982-06-23 | 1982-06-23 | PROTECTIVE LAYER INCLUDING GYPS, CEMENT AND ETHYL HYDROXICELLULOSA |
| SE8203897 | 1982-06-23 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| DK267083D0 DK267083D0 (en) | 1983-06-10 |
| DK267083A DK267083A (en) | 1983-12-24 |
| DK158742B true DK158742B (en) | 1990-07-09 |
| DK158742C DK158742C (en) | 1990-12-03 |
Family
ID=20347162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK267083A DK158742C (en) | 1982-06-23 | 1983-06-10 | PROTECTIVE SURFACE LAYER |
Country Status (4)
| Country | Link |
|---|---|
| DK (1) | DK158742C (en) |
| FI (1) | FI71334C (en) |
| NO (1) | NO156207C (en) |
| SE (1) | SE455308B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994015886A1 (en) * | 1993-01-13 | 1994-07-21 | Nachtman Thomas J | Sprayable composition and method for forming a foamed outdoor protective cover layer |
-
1982
- 1982-06-23 SE SE8203897A patent/SE455308B/en not_active IP Right Cessation
-
1983
- 1983-06-10 DK DK267083A patent/DK158742C/en not_active IP Right Cessation
- 1983-06-22 NO NO832259A patent/NO156207C/en unknown
- 1983-06-22 FI FI832297A patent/FI71334C/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE455308B (en) | 1988-07-04 |
| DK267083A (en) | 1983-12-24 |
| FI71334B (en) | 1986-09-09 |
| FI71334C (en) | 1986-12-19 |
| NO156207B (en) | 1987-05-04 |
| DK158742C (en) | 1990-12-03 |
| FI832297L (en) | 1983-12-24 |
| NO156207C (en) | 1987-08-12 |
| NO832259L (en) | 1983-12-27 |
| SE8203897L (en) | 1983-12-24 |
| DK267083D0 (en) | 1983-06-10 |
| SE8203897D0 (en) | 1982-06-23 |
| FI832297A0 (en) | 1983-06-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |