JPS61291471A - High temperature paper-like inorganic material and manufacture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to flame-resistant paper-like materials, particularly layered materials.

The present invention relates to a high temperature 1 paper-like material consisting of a fabric embedded in an inorganic silicate matrix.

Conventional technology There is no conventional technology available for comparison.

Problems to be Solved by the Invention A flame-resistant paper-like material suitable for writing, typing on a typewriter, etc., and exhibiting good mechanical properties, high temperature stability and water resistance, flexibility, smoothness and paper feel. There are material requirements. Besides having obvious utility as high-security papers, such materials are suitable for a number of applications, such as protective materials in packaging, thermal insulation, electrical insulation and decorative wall panels.

Means for Solving the Problems The object of the present invention is to provide a flame-resistant paper-like material exhibiting good mechanical properties, high temperature stability, water resistance, flexibility, smoothness and paper feel. be.

The materials of the present invention having the aforementioned properties have a range from about -0.4 to about -
The fabric has an average charge per structural unit in the range of 1 and is embedded in an inorganic monolayered silicate matrix selected from the group consisting of guanidine and multiamine derived cations. These materials are referred to herein as "embedded textiles" or "embedded textile materials."

The embedded textile materials of the present invention typically and desirably (1) have an average charge per structural unit ranging from about -0.4 to about -1 and contain exchangeable interstitial cations; contacting with a swollen monolayered silicate gel containing;
and (2) agglomerating the silicate by contacting the silicate in situ with at least one guanidine, or compound closely related to guanidine, and/or a multiamine-derived cation, such that at least some an ion exchange reaction between the exchangeable interstitial ions and at least some guanidine, or compounds closely related to guanidine, and/or multiamine-derived cations to form a layered, inorganic silicate matrix. It is prepared by a two-step process consisting of the steps of

Suitable examples of swollen monolayer silicate gels used as starting materials to form the silicate matrices used in the present invention include synthetic silicate mica materials. For example, U.S. Pat. No. 4.23'2519 teaches a method for preparing gelling silicates of several precursors, which method (
al fluorohectolite, hydroxyl hectorite, boron fluorophrogobite, fluorophlogopite, hydroxyl boron phlogovite, and together with these, talc, fluortalc, polylithionite, fluoropolylithionite, phlogobite and fluorophlogopite producing a wholly or preferentially crystalline form comprising crystals consisting essentially of lithium and/or sodium water-swollen mica selected from the group of solid solutions with other structurally compatible substances selected from the group of; (bl) The crystals are brought into contact with a polar liquid (usually water), resulting in swelling and disintegration of the crystals with the formation of a gel; then (cl) the solid:liquid ratio of the gel is adjusted to the desired value depending on the application. It consists of an adjustment process.

Glass-ceramics are preferred crystalline starting materials. Another example of a synthetic monolayer silicate starting material is U.S. Pat. No. 4.067.819: No. 1+, 011.
No. 5,2111: and No. 3.93 G, No. 383 are respectively synthetic tetra-silicate mica. Sols of synthetic taeniolite and synthetic hectorite are taught and discussed.

Also, U.S. Patent Nos. 5,525,540 and 3,1
No. 54,917 teaches a method for making an aqueous dispersion of vermiculite flake crystals that can also be used as a swollen, layered silicate gel starting material. These references indicate that such crystals contain (1) alkylammonium cations having 5 to 6 carbon atoms in each carbon group, such as methylbutylammonium, n-butylammonium, propylammonium and in-amyl-ammonium; 2) Cationic forms of amino acids such as lysine and ornithine.

and/or (5) methods for swelling such crystals by introducing interstitial ions such as lithium.

The inorganic matrix utilized in the present invention is prepared by contacting the silicate gel starting material described above with a source of exchange cations selected from guanidine or compounds closely related to guanidine and/or multiamine derivatives to form a matrix between the starting materials. It can be prepared by an ion exchange reaction between at least some of the cations and the guanidine and/or multiamine derived cations. The particular interstitial cations in the starting material depend on the silicate gel utilized. See, for example, U.S. Pat. No. 239,519 or 4.067.819; O45, 2l
No. 11; or when synthetic, induced gelling silicates made according to the method of No. 1936,585 are utilized as starting materials, the interstitial cations are generally Li+ and/or Na ions. U.S. Patent No. 5.525
．． When utilizing natural vermiculite dispersions prepared according to No. 5IIO, the interstitial cations are generally alkyl ammonium cations and
．． 3140. Silica gel starting materials, whether synthetic or natural, generally have a morphology typified by thin flakes that are disks, strips, and/or ribbons. Although we do not intend to limit flakes to specific measurements,
They have standard measurements. As used herein and in the claims, the term "charge per structural unit" refers to the term "charge per structural unit" by Lagaly and Weiss (G.
nd A., Weiss, “Determinatio
n of LayerCharge in Mic
a-Type Layer Siyu ICateS+
Conference, 6l-80 (1969))
and Lagaly (G, Lagaly, “Char
actrizat,ion ofClays by O
"Clay average charge density".

The starting material silicate gel is described in US Pat. No. 4.23'! 51
No. 9; No. 5.325.540; No. 4.067. g
l No. 9; No. 'l, O45, 2111; No. 3.95
No. 6.383 or No. 917, or other methods involving release layer materials with a desired range of charge densities.

In this regard, it has been found that silicates having charge densities greater than about -α4 cannot provide all articles exhibiting good durability when used in the present invention.

The starting material has a charge density of about -1 or less.

These materials cannot be used in the present invention because they cannot be prepared in a fully dispersed form.

The term "guanidine or closely related compounds"
is an aminomethyleneimine group =N-C[-)=N-1 and especially =N-C(-C)=N-4 or =N-C(-N
) -N- groups and resonance structures derived therefrom, used to refer to compounds with delocalized double bonds and cations derived therefrom. More specifically, those cations have the following formula [RC(R)R], where R, R and R are respectively NH, and CH,
19 of R, R and R, or 19 of R, R and R, with the proviso that at least two of R, R and R are NH,
, 19 or above of the hydrogen atom, or 19 or above is a substituent 1 such as c', -C, alkyl.

Can be substituted with C2-C, alkenyl or C2-C5 alkenyl. and two 19 of such substituents
, the above groups combine to form 19 or more rings that are saturated, unsaturated or aromatic). It can be seen that the cation has a localized or delocalized positive charge on the group 19, depending on the nature of the compound from which the cation is derived, giving it a resonant structure.

Examples of compounds in which cations are formed are guanidine, aminoguanidine, diaminoguanidine, methylguanidine,
Tetramethylguanidine, melamine.

2-aminopyridine and 2,6-diamitupyridine. Conveniently, the compounds can be used in the form of their hydrochloride or other corresponding soluble salts. For brevity, the term "guanidine-derived cation"
is used to refer collectively to "guanidine or compounds closely related thereto" as defined above.

The term "multiamine derived cation" when used in reference to the exchange cation utilized in the present invention refers to a low molecular weight,
Refers to non-polymeric di-, tri- and/or tetra-amino functional compounds in which the amine moiety is modified to become positively charged, for example by being protonated. Diamines are the multi-amine compounds of choice. Desired diamines generally have the following formula: % (wherein each R3 is selected from hydrogen, c, -C, a linear or collated chain alkyl group, a Ca -C6 acrylic alkyl group, or an aryl group, with the proviso that each nitrogen There are no more than 19 aryl groups; each selected from n or hydrogen, an alkyl group or an aryl group; and n represents an integer from 2 to 15.

Optionally, when n is 5 or more, Cx2 can form an aromatic cyclic moiety. ).

In multiamine-derived cations, the center of cation activity is placed on the nitrogen group in the multiamine. in general,
This is accomplished by protonating the multiamine to generate positively charged ammonium groups. This protonation must occur before cation exchange takes place on the starting silicate gel.

As previously described, ion exchange between guanidine and/or multiamine derived cations and intermediate cations in the silicate gel is performed to generate exchanged macroagglomerated particles forming a silicate matrix. , the starting silicate gel is reacted with a source of exchange cations derived from guanidine and/or multiamine compounds. The specific nature of the source will depend on the exchange cation utilized. and can be easily determined by a person skilled in the art. If you fall.

If the exchange cation is guanidinium or melaminium, the silicate will be reacted with the corresponding hydrochloride or other corresponding phase soluble salt.

As mentioned above, more than 19 exchange cations can be utilized in cation exchange reactions. Various cations give flocs or matrices.

The particular cations and combinations of cations will be selected by the practitioner of the invention based on the end use, since each ultimately provides a final product with different physical properties.

In a preferred method of manufacturing the embedded textile material of the present invention, a five-layered silicate gel starting material is applied to at least one side of a suitable fabric by a suitable method to coat the fibers making up the fabric with said silicate gel. and completely fills the spaces between the fibers.

Next, a cation exchange reaction is performed that utilizes at least one of the guanidine and/or multiamine derived cations. For example, silicate gel-coated fabrics are guanidine-induced in cationic solutions at room temperature.

Soaking can be for a sufficient time to cause an ion exchange reaction between at least some gel interstitial ions and at least some guanidine-derived cations to form the embedded textile material of the present invention.

In the material preparation method of the present invention, a layered, silicate gel starting material is first reacted with a guanidine and/or multiamine derived exchange cation source, generally with agitation, to form an aggregated mineral suspension. can be applied to at least one side of the fabric.

As used herein and in the claims, the term "
``Textile'' refers to a material made of multiple interwoven threads, and ``textile'' refers to a material made of filaments. The fabrics used in the invention can be woven or non-woven with organic and/or inorganic yarns, fibers or filaments. in general,
Fibers present such that the fibers, filaments or threads are coplanar and do not interfere with the film-forming properties of the silicate starting material.

All filaments or threads can be used to prepare smooth, flexible papers with good mechanical properties.

Materials from which the fabric can be made include (limiting? not intended) such as glass (eg, glass web), polyester, polyamide, polyolefin, polyacrylate, cellulose, rayon, and mixtures thereof. The term "web and mat" as used herein refers to 1
For example, glass webs or glass mats are used interchangeably.

The materials of the invention made by the aforementioned method are flame resistant, exhibit good mechanical properties and have flexibility and smoothness. However, some of the mechanical properties of such materials include compatible flame resistance on one or both sides of the material.
It has been found that improvements can be made by laminating swollen monolayer silicate coatings to produce layered composites that are within the scope of the present invention. Suitable compatibility, swelling that can be laminated on one or both sides of the embedded textile material of the present invention.

The layered silicate coating (without limitation Kuraguchi) is a guanidine cation exchange silicate prepared according to the method disclosed in U.S. Co-pending Application No. 662,057, dated October 18, 1984. Coatings and coatings include multiamine cation exchange silicate coatings prepared by the method disclosed in U.S. Co-pending Application No. 715.97, dated May 25, 1985.

Furthermore, swelling depends on the end use of the laminated material.

Compatible, organic or inorganic coatings other than layered silicate coatings can also be laminated to one or both sides of the embedded textile material according to the invention. For example, one can advantageously use coatings which further improve the water resistance of the embedded textile or laminate materials of the invention. An example of such a paint is a polysiloxane/silica paint.

The term "water resistant" herein does not mean that the articles of the invention are water resistant or completely impermeable to water; Used to indicate that the tensile strength of at least seven straws does not decrease substantially.

In the following examples, unless otherwise specified.

The starting materials used are those of U.S. Pat. No. 4.25'J 519.
It was lithium fluorohectolite made by the method disclosed in the issue.

Example 1 This example describes the preparation of a guanidinium-exchanged fluorohectolite agglomerated silicate that can be applied directly to textiles by the material preparation method of the present invention.

Slurry of guanidium fluorhectorite, I
It was prepared by adding lithium fluorohectolite 109 dispersion 4751 to N guanidine hydrochloride solution Li+ll. The slurry was then agitated in a high shear mixer to reduce the particle size of the resulting flocs, washed seven times, analyzed for hydrated Nk, and diluted to form a 2% solids slurry.

Example 2 The inorganic paper-like material has a gap of 0.114 fl (4,5
2 L 6CrnX 2 gffiX slurry of Example 1 using a film applicator m1d)
It was prepared by coating a non-woven glass mat of nm thickness. The coated mat was then air dried. A white inorganic paper-like material was obtained.

Example 5 This example demonstrates the manufacturability of a granicine-exchanged layered silicate coating used in making the laminated composite article of the present invention.

A 10% solids lithium fluorhectorite gelling dispersion was prepared by the method disclosed in U.S. Pat. No. 4,259,519. The coating film has a gap of 0 and 114 m.
Apply a wet film of αl 1 lIm thickness of the dispersion onto a glass plate using a (4,5 m) film applicator.
The film was stretched to make a 12.7 m wide material.

The glass plate with the film attached thereon was then immersed in an α25M guanidinium hydrochloride solution to effect cation exchange between the guanidinium cations and the interlayer cations of fluorhectorite. A skin was immediately formed on the film.

A cell indicates that such an exchange has occurred. Dress for 10 minutes.

The film was removed from the glass plate, washed with deionized water to remove residual salts, and dried. Does the film retain good flexibility and strength when wet? Indicated.

Example 5 A mineral paper was prepared by coating a 10% lithium fluorohectolite suspension onto a 216σ x 2gc7n x 4mm thick non-woven glass mat using a film applicator with a gap of α1114m. The coated glass is then coated with α25 of guanidine hydrochloride.
The agglomeration of fluorohectolite was obtained through ion exchange process by immersion in 1000 mg of M aqueous solution (60°C). The guanidinium fluorohectolite was then removed from the salt solution and washed with fresh water to remove excess salt. The coated mat was then air dried to yield a white, flexible, smooth mineral paper.

Example 6 A 2160 x 2 Ficm guanidinium fluorohectolite coating was prepared by drawing a 10% lithium fluorohectolite suspension onto a 216 an x 2 g glass plate using a film applicator with a gap of 0.11 nW. First, the coated sheet metal was prepared by immersing it in a 0.25M aqueous guanidine hydrochloride solution (60°C) for 1,000 hours. in the salt solution for 10 minutes -
After that, the glass plate containing the coating was removed and excess salt was removed from the coating by immersing it in a bath containing fresh water. The two guanidinium fluorohectolite coatings thus prepared were then laminated to both sides of a guanidinium fluorohectolite mat prepared as described in Example 5. The Sel et al. coating and mat were pressed together using a roller press laminator while wet. The resulting laminated guanidinium fluorohectolite mat was then air- or oven-dried to yield an intensely white, malleable, smooth, inorganic paper.

Comparative Example This comparative example shows that the use of polymeric amine compounds as exchange cations in the process of the invention is unsuitable for technical processing reasons.

Lithium fluorohectolite coated nibrate 5%K
The method of Example 6 was repeated, except that the samples were soaked in 1000 ml of ymene solution for 211 hours at 25°C. The resulting structure was not perfect and broke when handled by hand.

The inorganic papers prepared in Application Examples 5 and 6 were tested for use as substrates for recording information. On these papers.

IBM typewriter with regular carbon ribbon
Typed using. They wrote and copied using a regular Yoi Ink ballpoint pen and a photocopier. In all cases of testing, letters typed, written or photocopied on mineral paper showed excellent visual contrast with paper. Additionally, carbon, ink, and photocopier toner all maintained good adhesion to the mineral paper without smearing, similar to that seen when using regular bond paper. When other inorganic materials, such as glassy ceramic surfaces, were similarly tested, ink or carbon adhesion was poor.

Flammability The inorganic paper prepared by the method of Examples 5 and 6 was tested for flammability. The papers prepared in Examples 5 and 6 were typed and exposed to the flame of a Bunsen burner for 30 seconds. Examples 5 and 6 were typed and then coated with the polysiloxane/inorganic paint described in Example 9 below.
These experiments were repeated using 19 types of paper. Next, (ii) the ease of ignition, and (2) the flame resistance
Observations were made regarding the readability of the print after exposure for seconds.

Paper from Table Examples From the above data it is clear that no burning of the paper was observed even after prolonged heating until the paper became red hot. After cooling, the 5 papers remained as they were.

When using laminated paper (Example 6), characters typed on one sheet of paper can still be read.

Smoothness Electron micrographs of the papers prepared in Examples 5 and 6 show a very smooth surface compared to sheets containing loose fibers. Paper prepared in accordance with the present invention does not exhibit surface voids as seen in sheets containing loose fibers. Since the fibers used in the present invention are parallel to the surface, no interruptions in the alignment of the laminae occur during papermaking, resulting in a smooth surface.

Example 7 A colored inorganic paper was prepared by adding 0.5% by weight of chromium oxide pigment to a 10% lithium fluorohectolite suspension. Paper was prepared by the method described in Example 11 using a colored lithium fluorhectorite suspension that was mixed with the pigment and then spread onto glass mats and plates. The final paper product had a green color.

Example 8 The method of Example 8 was repeated except that red pigment was utilized in place of the chromium pigment. The final paper product has a red color.

Example 9 Both sides of dry paper were coated with 0.02511 w (1 w) of a 30% solids solution of a 70/30 parts by weight polysiloxane/silica inorganic paint.
miJ) by coating.

The water resistance and flame resistance of the inorganic papers prepared in Examples 5 and 6 were improved. The solvent was removed by drying. When these papers were treated in this way, the water no longer wet the paper but beaded on the surface.

Example 10 Except that the non-woven fabric was made of polyester.

A paper-like material was made using the method described in Example.

A paper-like laminate composite was prepared by laminating a guanidinium coating on both sides of a guanidinium fluorohectolite coated fabric prepared according to Example 10.

Example 12 A paper-like material was prepared using the method described in Example 5, except that a woven glass fiber fabric was used instead of a non-woven fabric.

Example 15 A paper-like laminated composite article was prepared by laminating a guanidinium coating on both sides of the guanidinium fluorohectolite coated fabric prepared according to Example 12.

Example 14 A paper-like material was prepared according to the method described in the Examples except that a nylon sheathed dimensional fabric was used. A laminated composite article was prepared by laminating guanidinium coatings.

Mechanical Properties The dry and wet tensile strengths of the materials and ordinary bond paper are shown in the table below: * Example 5 2530 555 Example 6 770 600 Example 12 73i 1100 Bond paper 560.0 221! *：
Soaked in water for 211 hours before testing.

As can be seen from the table above, materials consisting of NFC fabric embedded in a silicate matrix exhibit dry and tensile strengths that are very close to or even higher than those of conventional bond paper.

Example 16 Using a film applicator with a gap Q of 1111w, 2 L 6CrnX 21! By coating a 10% lithium fluorohectolite suspension on a non-woven glass mat of m x n tan thickness.

A friend who prepares inorganic paper. The coated glass mat is then coated with hexamethylene diammonium dihydrogen chloride.
It was immersed in a 25M solution (60°C) looOmj for 10 minutes. and caused the aggregation of fluorohectolite through an ion exchange process. The guanidinium fluorohectolite mat was then removed from the salt solution and washed with fresh water to remove excess salt. The coated mat was then air-dried to yield a white, flexible, smooth mineral paper.

Example 17 A gap of 0.1 on a glass plate of 216 crn x 2 g crn
Stretch the 10% lithium fluorohectolite suspension using a 14-piece film applicator.

By immersing the coated glass plate in 1,000 g of a 0.25 M aqueous solution of hexamethylene diammonium dihydrogen chloride, 2 L 6C! nX 2 at
A hexamethylene diammonium hectorite coating film of M was made. After 10 minutes in the salt solution, the glass plate containing the coating was removed and excess salt was washed from the coating by immersing the plate in a bath containing fresh water. The two hexano f L/7 diammonium fluorohectolite coatings thus prepared were then laminated to both sides of the hexamethylene diammonium fluorohectolite mat prepared as in Example 16. The coatings and mats were pressed together while wet using a roller press laminator. The resulting laminated xamethylene diammonium fluorohectolite mat is then air or oven dried.

A strong, flexible, and smooth inorganic paper with a white color.

Example 18 21,6 crn x 2 g crn glass plate with 0.
111+ by stretching a 10% lithium fluorohectolite suspension with a proverbial film applicator and then immersing the coated plate in 1000 m of a 0.25 M aqueous solution of guanidine hydrochloride at 60°C.

A guanidinium fluorohectolite coating film of 21.6σ x 28α was prepared. After 10 minutes in the salt solution, the glass plate containing the coating was removed and excess salt was washed from the coating by immersing it in a bath containing fresh water. The two guanidinium fluorohectolite coatings thus prepared were then laminated to both sides of a hexamethylene diammonium fluorohectolite mat prepared as in Example 16. The coatings and mats were pressed together while wet using a roller press laminator. The resulting laminated guanidinium fluorohectolite mat was then air or oven dried to yield a white, strong, malleable, smooth mineral paper.

Example 19 This example illustrates the lamination of an organic coating to an embedded textile material of the present invention.

The laminated composite material was prepared by first making the embedded textile material according to the method of Example 5. 700Kg
/d pressure and 1119°C for 10 minutes using a hot press.
) thick polyvinylidene fluoride coating was laminated.

Claims (1)

Claims: 1. (a) having an average charge per structural unit of about -0.4 to about -1; (b) interstitial cations selected from the group consisting of guanidine and multiamine derived cations; A method for producing a high-temperature, paper-like inorganic material, characterized in that it consists in embedding a fabric in a layered, silicate matrix containing. 2. The method according to claim 1, characterized in that the layered silicate matrix is derived from a synthetic, gelling silicate with Li^+ and/or Na intercalation cations. . 3. The method according to claim 2, wherein the synthetic silicate is synthetic tetra-silicate mica. 4. The method according to claim 2, wherein the synthetic silicate is synthetic taeniolite. 5. The method according to claim 2, wherein the synthetic silicate is synthetic hectorite. 6. The synthetic silicates include fluorohectolite, hydroxyl hectorite, boron fluorophlogopite, hydroxy boron phlogopite, solid solutions thereof, and combinations thereof with talc, fluortalc, polylithionite, fluoropolylithio A body consisting essentially of crystals of water-swellable mica selected from the group of solid solutions between a polar liquid and another structurally compatible material selected from the group consisting of night, phlogopite and fluorophlogopite is formed into a polar liquid and a gel. 3. A method according to claim 2, characterized in that the method is prepared by contacting for a period sufficient to cause swelling of the crystals with the formation of . 7. The method according to claim 6, wherein the crystal is fluorohectolite. 8. Process according to claim 7, characterized in that the guanidine-derived cation is selected from the group of diaminoguanidine, tetramethylguanidine, guanidine, aminoguanidine, methylguanidine and melamine derivatives. 9. The method according to claim 6, wherein the polar liquid is water. 10. Process according to claim 1, characterized in that the layered silicate matrix is derived from vermiculite with alkyl ammoniums, cationic forms of amino acids and/or Li^+ interstitial ions. . 11. The fabric is prepared by: (a) coating the fabric with a swollen, layered silicate gel having an average charge per structural unit of about -0.4 to about -1 and containing exchangeable interstitial ions;
and (b) reacting the swollen spherical silicate with at least one cation selected from the group consisting of guanidine and multiamines, such that at least some of the exchangeable interstitial ions and at least some of the guanidine-derived cations 2. A method according to claim 1, characterized in that embedding in a layered silicate matrix is carried out by carrying out an ion exchange reaction between the layers and thereby forming a layered silicate matrix. . 12. Fabrics have an average charge per structural unit of about -0.4
Embedded in a layered silicate matrix by coating with a flocked mineral material consisting of a swollen, layered silicate gel having a swell of about -1, the silicate selected from the group consisting of guanidine and multiguanidine derived cations. A method according to claim 1, characterized in that it contains at least some interstitial cations. 13. The method according to claim 1, characterized in that the fabric consists of a glass mat. 14. The method according to claim 1, wherein the fabric is made of polyester. 15. The method according to claim 1, characterized in that the fabric is made of polyamide. 16. Embedding the fabric in a layered, silicate matrix that (a) has an average charge per structural unit ranging from about -0.4 to about -1 and (b) includes guanidine-derived interstitial cations. A method for producing a high-temperature, paper-like inorganic material, characterized by comprising: 17. Embedding the fabric in a layered, silicate matrix that (a) has an average charge per structural unit ranging from about -0.4 to about -1 and (b) includes multiamine-derived interstitial cations. A method for producing a high-temperature, paper-like inorganic material, comprising the steps of: 18, (a) (i) having an average charge per structural unit in the range of about -0.4 to about -1, and (ii) interstitial cations selected from the group consisting of guanidine and multiamine derived cations; Embedding a fabric in a layered silicate matrix containing ions; and (b) laminating a compatible paint on at least one side of the embedded fabric. Method. 19. The coating has an average charge per structural unit ranging from about -0.4 to about -1 and includes at least some interstitial cations selected from the group consisting of guanidine and multiamine derived cations. 19. Process according to claim 18, characterized in that it is prepared from a swollen, layered silicate. 20, the layered silicate matrix is Li^+ or N
19. A method according to claim 18, characterized in that it is derived from a synthetic, gelling silicate having a^+ interstitial cations. 21. The layered silicate matrix contains alkylammonium, cationic forms of amino acids and/or Li^+
19. A method according to claim 18, characterized in that it is derived from vermiculite with interstitial ions. 22. The method of claim 18, wherein the coating is a polysiloxane/silica coating. 23, (a) having an average charge per structural unit ranging from about -0.4 to about -1, and (b) at least some interstitial cations selected from the group consisting of guanidine and multiamine derived cations. A high-temperature, paper-like inorganic material characterized by consisting of a woven fabric embedded in a layered, silicate matrix containing. 24. Claim 2 in which the fabric is made of glass mat
Materials described in Section 3. 25. The material according to claim 23, characterized in that the fabric is made of polyester. 26. Material according to claim 23, characterized in that the fabric consists of polyamide. 27, (a) having an average charge per structural unit ranging from about -0.4 to about -1, and (b) embedded in a layered, silicate matrix comprising at least some interstitial guanidine-derived cations. A high-temperature, paper-like inorganic material characterized by consisting of a woven fabric. 28, (a) having an average charge per structural unit ranging from about -0.4 to about -1, and (b) embedded in a layered, silicate matrix comprising at least some interstitial multiamine-derived cations. A high-humidity, paper-like inorganic material characterized by being made of a woven fabric.