DE3902595C1 - Fibre-reinforced shaped body - Google Patents
Fibre-reinforced shaped bodyInfo
- Publication number
- DE3902595C1 DE3902595C1 DE19893902595 DE3902595A DE3902595C1 DE 3902595 C1 DE3902595 C1 DE 3902595C1 DE 19893902595 DE19893902595 DE 19893902595 DE 3902595 A DE3902595 A DE 3902595A DE 3902595 C1 DE3902595 C1 DE 3902595C1
- Authority
- DE
- Germany
- Prior art keywords
- fibers
- fibres
- sodium
- potassium
- cellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011734 sodium Substances 0.000 claims abstract description 18
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 12
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000011591 potassium Substances 0.000 claims abstract description 11
- 229910052700 potassium Inorganic materials 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 8
- 229920002678 cellulose Polymers 0.000 claims abstract description 7
- 239000001913 cellulose Substances 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 4
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims abstract description 4
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims abstract description 4
- 240000000491 Corchorus aestuans Species 0.000 claims abstract description 4
- 235000011777 Corchorus aestuans Nutrition 0.000 claims abstract description 4
- 235000010862 Corchorus capsularis Nutrition 0.000 claims abstract description 4
- 235000004431 Linum usitatissimum Nutrition 0.000 claims abstract description 4
- 235000009120 camo Nutrition 0.000 claims abstract description 4
- 229920002301 cellulose acetate Polymers 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims abstract description 4
- 235000005607 chanvre indien Nutrition 0.000 claims abstract description 4
- 239000003365 glass fiber Substances 0.000 claims abstract description 4
- 239000011487 hemp Substances 0.000 claims abstract description 4
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims abstract 3
- 239000000835 fiber Substances 0.000 claims description 8
- 239000012783 reinforcing fiber Substances 0.000 claims description 7
- 239000012784 inorganic fiber Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000002557 mineral fiber Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 241000208202 Linaceae Species 0.000 claims 2
- 239000004575 stone Substances 0.000 claims 2
- 210000002268 wool Anatomy 0.000 claims 2
- 240000006240 Linum usitatissimum Species 0.000 abstract description 2
- 239000011490 mineral wool Substances 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- -1 pulp Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
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
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
Die Erfindung betrifft aus einem hydraulischen Bindemittel, wie Zement, bestehende Formkörper mit Verstärkungsfasern, insbesondere Bauplatten, wobei die Verstärkungsfasern alle natürlichen organischen Fasern, wie Zellstoff, Papier, Flachs, Hanf, Jute usw. und/oder Zellulosederivate, wie Zellulose acetat und/oder organische künstliche Fasern, wie Polyacryl nitrilfasern und/oder anorganische Fasern, nämlich Glasfasern und Steinwolle und/oder weitere synthetische Mineralfasern sein können.The invention relates to a hydraulic binder, like cement, existing moldings with reinforcing fibers, especially building boards, with the reinforcing fibers all natural organic fibers such as pulp, paper, flax, Hemp, jute, etc. and / or cellulose derivatives such as cellulose acetate and / or organic artificial fibers, such as polyacrylic nitrile fibers and / or inorganic fibers, namely glass fibers and rock wool and / or other synthetic mineral fibers could be.
Bei Formkörpern dieser Art besteht der Nachteil, daß die Verstärkungsfasern sich im Laufe der Zeit abbauen, so daß die Festigkeitswerte abnehmen. In the case of moldings of this type there is the disadvantage that the Reinforcing fibers degrade over time, so that decrease the strength values.
Der Erfindung liegt demgemäß die Aufgabe zugrunde, Formkörper der eingangs genannten Art zu schaffen, die trotz der Verwendung der obengenannten Fasern eine lange Standzeit haben, in welcher die Festigkeitswerte allen falls geringfügig abnehmen.The invention is accordingly based on the object To create moldings of the type mentioned, the despite the use of the above fibers a long Have service life in which the strength values all decrease slightly if necessary.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die fertiggestellten Formkörper oder Bauplatten einen wasserlöslichen Anteil an Natrium (Na2O) enthalten, der geringer als 10 mg/10 g Feststoff ist.This object is achieved in that the finished moldings or building boards contain a water-soluble content of sodium (Na 2 O) which is less than 10 mg / 10 g of solid.
Zwar ist es bekannt (DE-OS 36 41 370), daß Zellulosefasern von Alkalien angegriffen werden können und daß demzu folge eine sogenannte niedrige alkalische "Pufferkapazi tät" unter bestimmten Bedingungen nicht überschritten werden soll. Es handelt sich hier um eine Alkalität, die sowohl Alkaliionen als auch Erdalkaliionen betrifft. Nach dem dortigen bekannten Verfahren wird aus dem Eluat der Matrix durch Tritration mit Salzsäure die alkalische Pufferkapazität bestimmt und errechnet. Der Salzsäurever brauch bis zu einem pH-Wert 7 bildet also die Grundlage der alkalischen Pufferkapazität. Dieser Salzsäureverbrauch resultiert jedoch zum größten Teil aus den Hydroxyden von Kalzium und Magnesium. Hier handelt es sich aber im Gegensatz zu Natrium und Kalium um Erdalkalien, die, wie umfangsreiche Versuche bei der Anmelderin ergeben haben nur vergleichsweise geringfügige Schädigungen der Zellulosefasern verursachen. Ein Hinweis auf die schäd liche Wirkung von Natrium und/oder Kalium findet sich aber in diesem Zusammenhang nicht. Es wird also auch nicht die technische Lehre vermittelt, den wasserlös lichen Anteil an Natrium und/oder Kalium unter die oben genannten Werte herabzusetzen, um die Schäden an den Fasern auszuschließen.It is known (DE-OS 36 41 370) that cellulose fibers can be attacked by alkalis and that follow a so-called low alkaline buffer capacity under certain conditions shall be. It's an alkalinity, which affects both alkali and alkaline earth ions. According to the known method there, the eluate the matrix by titration with hydrochloric acid the alkaline Buffer capacity determined and calculated. The hydrochloric acid ver need up to a pH of 7 forms the basis of the alkaline buffer capacity. This hydrochloric acid consumption however results largely from the hydroxides of Calcium and magnesium. But here it is in Contrast to sodium and potassium around alkaline earths, which, as extensive tests by the applicant show have only comparatively minor damage to the Cause cellulose fibers. An indication of the damage Effect of sodium and / or potassium is found but not in this context. So it will be too not the technical teaching, the water dissolves the proportion of sodium and / or potassium below that reduce the mentioned values in order to damage the Exclude fibers.
Entsprechendes gilt für ein weiteres bekanntes Verfahren (DE-OS 37 20 134), bei welchem zwar ein alkaliarmes Gemisch angesprochen ist, das als Bindemittel dienen soll, eine Anregung Natrium und Kalium unter bestimmte Werte herab zusetzen, wird hierdurch aber ebenfalls gegeben.The same applies to another known method (DE-OS 37 20 134), in which a low-alkali mixture is addressed, which should serve as a binder, a Excitation sodium and potassium below certain values clogging is also given by this.
Die erfindungsgemäß vorgesehenen obengenannten Anteile sind dadurch ermittelbar, daß 10 g analysenfein trocken gemahlener Feststoff des Endproduktes in 100 ml destillier tem Wasser bei 20°C 24 Stunden lang bewegt werden.The proportions mentioned above according to the invention can be determined from the fact that 10 g of fine analysis are dry Distilled ground solid of the final product in 100 ml water at 20 ° C for 24 hours.
Diese Bewegung kann durch Rühren, Schütteln oder dgl. erfolgen. This movement can be done by stirring, shaking or the like. respectively.
Dieser niedrige Gehalt an Natrium und Kalium kann zweck mäßigerweise durch geeignete Auswahl von Rohstoffen und/ oder durch den Zusatz von Komplexsalzbildnern herbeige führt werden.This low sodium and potassium content can be useful moderately through suitable selection of raw materials and / or by adding complex salt formers leads.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893902595 DE3902595C1 (en) | 1989-01-28 | 1989-01-28 | Fibre-reinforced shaped body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19893902595 DE3902595C1 (en) | 1989-01-28 | 1989-01-28 | Fibre-reinforced shaped body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3902595C1 true DE3902595C1 (en) | 1990-05-03 |
Family
ID=6373013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19893902595 Expired - Fee Related DE3902595C1 (en) | 1989-01-28 | 1989-01-28 | Fibre-reinforced shaped body |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE3902595C1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4133894A1 (en) * | 1991-10-10 | 1992-03-19 | Maerkische Faser Ag | PAN STRUCTURAL MOLDED BODY |
| DE4133895A1 (en) * | 1991-10-10 | 1993-04-15 | Maerkische Faser Ag | MULTI-COMPONENT SYSTEM FROM NATURAL POLYMERS AND PAN-SHAPED BODIES WITH ASBEST-SPECIFIC PROPERTIES FOR USE IN HYDRAULIC BINDERS |
| AT1374U1 (en) * | 1996-10-09 | 1997-04-25 | Karl F Stroeml | BIOFIBER CONCRETE |
| AT1504U3 (en) * | 1997-03-27 | 1997-10-27 | Karl F Stroeml | PRODUCTION OF NATURAL FIBER REINFORCED CLAY, CEMENT AND LIME AND PRODUCTION OF HOMOGENEOUS OR MDF PANELS BY ADDING HEMP SHEEPS |
| DE20021310U1 (en) | 2000-12-16 | 2001-05-10 | Kurt Glass GmbH Baustoffwerk, 79258 Hartheim | Addition to a building material mixture in the form of fibers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3641370A1 (en) * | 1986-12-04 | 1988-06-09 | Fraunhofer Ges Forschung | PERMANENT CONSTRUCTION MOLDED PARTS |
| DE3720134A1 (en) * | 1987-06-16 | 1988-12-29 | Fraunhofer Ges Forschung | Durable, high-strength construction-material mouldings |
-
1989
- 1989-01-28 DE DE19893902595 patent/DE3902595C1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3641370A1 (en) * | 1986-12-04 | 1988-06-09 | Fraunhofer Ges Forschung | PERMANENT CONSTRUCTION MOLDED PARTS |
| DE3720134A1 (en) * | 1987-06-16 | 1988-12-29 | Fraunhofer Ges Forschung | Durable, high-strength construction-material mouldings |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4133894A1 (en) * | 1991-10-10 | 1992-03-19 | Maerkische Faser Ag | PAN STRUCTURAL MOLDED BODY |
| DE4133895A1 (en) * | 1991-10-10 | 1993-04-15 | Maerkische Faser Ag | MULTI-COMPONENT SYSTEM FROM NATURAL POLYMERS AND PAN-SHAPED BODIES WITH ASBEST-SPECIFIC PROPERTIES FOR USE IN HYDRAULIC BINDERS |
| AT1374U1 (en) * | 1996-10-09 | 1997-04-25 | Karl F Stroeml | BIOFIBER CONCRETE |
| AT1504U3 (en) * | 1997-03-27 | 1997-10-27 | Karl F Stroeml | PRODUCTION OF NATURAL FIBER REINFORCED CLAY, CEMENT AND LIME AND PRODUCTION OF HOMOGENEOUS OR MDF PANELS BY ADDING HEMP SHEEPS |
| DE20021310U1 (en) | 2000-12-16 | 2001-05-10 | Kurt Glass GmbH Baustoffwerk, 79258 Hartheim | Addition to a building material mixture in the form of fibers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8100 | Publication of the examined application without publication of unexamined application | ||
| D1 | Grant (no unexamined application published) patent law 81 | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |