CN102838341A - High-intensity magnesite cement board and preparation method thereof - Google Patents

Abstract

The invention relates to a high-intensity magnesite cement board and a preparation method thereof. The constituent raw materials are rice hull, an additive, magnesite powder, magnesium chloride modified water, phosphoric acid, a defoaming agent and glass fiber cloth. The preparation method comprises the following steps of: (1) starting a machine and stirring the rice hull and the additive for 5 minutes according to a weight ratio, adding the magnesium chloride modified water, adding the magnesite powder while stirring, after 10 minutes, adding the phosphoric acid and the defoaming agent, and after 5 minutes, forming mixed slurry; (2) adding a layer of the glass fiber cloth in the mould, injecting the mixed slurry on the glass fiber cloth, and vibrating a rolling plate; (3) placing the mould on a steel frame and feeding to a curing chamber; and (4) after leaving the frame and demolding, and opening a mortise and tenon joint of a mortise by utilizing a machine so as to obtain a finished product. The high-intensity magnesite cement board, provided by the invention, has the advantages of scientific composition and artful compatibility of raw materials, good compaction, high intensity and good water tolerance of the formed board, stable neutralization of oxygen ions, and safety use, after detection and identification of a national authority compartment, all indexes reach primary standard of nation, and the high-intensity magnesite cement board is suitable for high-speed rail construction, flyovers, stadiums, airport baffles of a waiting room, an inner wallboard, an outer wallboard and a floor substrate.

Description

A kind of magnesite high-strength cement plate and preparation method thereof

Technical field

The invention belongs to building materials field, relate to cement plate, especially a kind of magnesite high-strength cement plate and preparation method thereof.

Background technology

At present, the employed sheet material of construction market is more, and like asbestos plate, cement plate, big zine plate and multi-ply wood etc., these sheet materials itself have many defectives, exists problems such as non-watertight, not fire-resistant, anti-freezing, the easy peeling of body of wall, life-span be short; Also have some sheet materials to contain harmful materials such as asbestos, people's daily life is worked the mischief.Therefore, invention a kind ofly overcomes above-mentioned defective and environmental protection, building board with building decoration function is very necessary.

Through retrieval, find following three pieces of publication documents:.

1, a kind of prescription of magnesite board and technology (CN1244511), its constituent material is Natural manganese dioxide, chlorine solution, saw foam, glasscloth, water, tsp, 191 resins, it is characterized in that: the prescription of chlorine solution is: magnesium chloride 44～45%; Water 50%; Tsp 1～3%, 191 resins 1～10% are by the constituent material of above-mentioned sheet material; With the chlorine solution of above-mentioned prescription, with the particular process fabrication magnesite board.

2, a kind of magnesite composite board material (CN201635247U); Be made up of upper strata, lower floor and center laminboard layer, upper strata lower floor is spun glass and strengthens the magnesite panel, its at the middle and upper levels xsect be waviness; Lower floor is dull and stereotyped; The center laminboard layer be and upper strata and lower floor between, the center laminboard layer is to contain the panel that foaming magnesite a large amount of, airtight, even pore is processed by inside, and an exhausting hole is arranged in the middle of the laminboard layer of center.

3, the compound magnesite H.T. of a kind of sandwich light weight board (CN202324457U), it adopts three kinds of different magnesite material layers, cooperates fiberglass gridding cloth, and non-woven fabrics forms 11 layers of composite structure.Said three kinds of different magnesite materials are meant: are positioned at the foaming magnesite thermal insulation layer of sheet material core, are positioned at the polymer flexibility magnesite layer of insulating foam layer both sides, and HS magnesite strike.Between the polymer flexibility magnesite layer of core thermal insulation layer and its both sides, between polymer flexibility magnesite layer and HS strike, the layer of glass grid cloth is set all.On the surface layer of sheet material, be compounded with nonwoven layer.

Through the technical characterictic contrast, above-mentioned three pieces of publication documents and application of the present invention have more different.

Summary of the invention

The objective of the invention is to overcome the weak point of prior art, a kind of magnesite high-strength cement plate that can be used as external and internal wall plate and grade slab is provided, this cement plate environmental protection has plurality of advantages such as fire-retardant, fire prevention, heat-resisting, waterproof, tension ultimate compression strength height.

Another object of the present invention provides a kind of preparation method of magnesite high-strength cement plate.

The objective of the invention is to realize through following technical scheme: a kind of magnesite high-strength cement plate, it constitutes raw material and parts by weight are respectively:

And said magnesium chloride modified water is a magnesium chloride brine, its glass magnesium proportion tolerance 27-29 degree.

And said addition material comprises a kind of or two or more of bluestone powder, flyash and saw foam.

And the order number of said glasscloth is 10 orders.

A kind of preparation method of magnesite high-strength cement plate, step is:

⑴ stir rice husk addition material start 5 minutes by weight ratio, adds the magnesium chloride modified water then, when beginning to stir, adds magnesium oxychloride, after 10 minutes, adds phosphoric acid, skimmer, promptly forms mixture slurry after 5 minutes;

⑵ the thickness of adjustment shaper, the mould of packing into then adds layer of glass cloth in mould; The mixture slurry of on this glasscloth, annotating, the thickness of mixture slurry is 0.2cm, the vibrations rolling plates; Make glasscloth and mixture slurry thorough mixing; Back and forth form the stack of multilayer woven glass fabric and mixture slurry thus, when operation, keep vibrations;

⑶ be placed on mould and send into curing room on the steelframe, curing room temperature 20-40 degree, and atmospheric moisture 40-60 degree, 20 hours can the undercarriage demoulding;

⑷ after the undercarriage demoulding, maintenance 30 days under the state of nature in the open uses machinery to open the system tongue-and-groove tenon fourth of the twelve Earthly Branches, gets product.

Advantage of the present invention and beneficial effect are:

1, cement plate involved in the present invention; One side is the higher shiny surface of intensity, hardness; Another side is the meticulous pitted skin of polishing, has fire prevention, heat-resisting, the anti-folding of tension, higher-strength, corrosion-resistant galvanized metal spare, and non-scale does not fall face; Not containing the asbestos noxious, is a kind of green structural material product.

2, raw material of the present invention constitutes science, and compatibility is ingenious, and formed sheet material density is good; Intensity is high, water-tolerant, the stable neutralization of oxonium ion; Safe in utilization; And detect identification through national authority department, various indexs reach country-level standard, are fit to high ferro construction, viaduct, stadiums, airport lounge airport surrounding baffle, inside and outside wall board and floor base plate and use.

3, the present invention is easy to use, and it is simple and easy to construct, and the sheet material surrounding edge is shaped on the tongue-and-groove of mutual splicing, can be surely can certificate, but jewel hole can arbitrarily splice, on the building materials market and in the construction work, be with a wide range of applications alternative existing various sheet materials.

Embodiment

Further specify in the face of the embodiment of the invention down; Following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.

A kind of magnesite high-strength cement plate, it constitutes raw material and parts by weight are respectively:

Said addition material comprises a kind of or two or more of bluestone powder, flyash and saw foam.

Said magnesium chloride modified water is a magnesium chloride brine, its glass magnesium proportion tolerance 27-29 degree.

The order number of said glasscloth is 10 orders.

Embodiment 1:

A kind of preparation method of magnesite high-strength cement plate, step is:

⑴ get 23 kilograms on rice husk, 26 kilograms of bluestone powders, and 10 kilograms of saw foams, start was stirred 5 minutes, added 110 kilograms of magnesium chloride modified water then, glass magnesium proportion tolerance 27 degree of this modified water; When beginning to stir, add 100 kilograms of magnesium oxychlorides, after 10 minutes, add phosphatase 11 .5 kilogram, 0.3 kilogram of skimmer promptly formed mixture slurry after 5 minutes.

⑵ the thickness of adjustment shaper, like six layers of glasscloth, the mould of packing into then; In mould, add layer of glass cloth, the mixture slurry of on this glasscloth, annotating, the thickness of mixture slurry are 0.2cm; The vibrations rolling plates makes glasscloth and mixture slurry thorough mixing; Repave the second layer, three layers, four layers, five layers, and the mixture slurry of on glasscloth, annotating respectively, until covering the layer 6 glasscloth, when operation, keep vibrations.

⑶ be placed on mould and send into curing room on the steelframe, curing room temperature 20 degree, and atmospheric moisture 60 degree, 20 hours can the undercarriage demoulding.

⑷ after the undercarriage demoulding, maintenance 30 days under the state of nature in the open, its outward appearance is a grey, uses machinery to open the system tongue-and-groove tenon fourth of the twelve Earthly Branches, gets product.

Embodiment 2:

A kind of preparation method of magnesite high-strength cement plate, step is:

⑴ get 25 kilograms on rice husk, 28 kilograms of bluestone powders, and 5 kilograms in flyash, start was stirred 5 minutes, added the sal epsom modified water then, glass magnesium proportion tolerance 29 degree of this modified water; When beginning to stir, add 100 kilograms of magnesium oxychlorides, after 10 minutes, add phosphatase 11 .5 kilogram, 0.3 kilogram of skimmer promptly formed mixture slurry after 5 minutes.

⑵ the thickness of adjustment shaper, like the four-layer glass cloth, the mould of packing into then; In mould, add layer of glass cloth, the mixture slurry of on this glasscloth, annotating, the thickness of mixture slurry are 0.2cm; The vibrations rolling plates makes glasscloth and mixture slurry thorough mixing; Repave the second layer, three layers, and the mixture slurry of on glasscloth, annotating respectively, until covering the four-layer glass cloth, when operation, keep vibrations.

⑶ be placed on mould and send into curing room on the steelframe, curing room temperature 40 degree, and atmospheric moisture 40 degree, 20 hours can the undercarriage demoulding.

⑷ after the undercarriage demoulding, maintenance 30 days under the state of nature in the open, its outward appearance is a grey, uses machinery to open the system tongue-and-groove tenon fourth of the twelve Earthly Branches, gets product.

Claims (5)

1. magnesite high-strength cement plate is characterized in that: it constitutes raw material and parts by weight are respectively:

2. magnesite high-strength cement plate according to claim 1 is characterized in that: said magnesium chloride modified water is a magnesium chloride brine, its glass magnesium proportion tolerance 27-29 degree.

3. magnesite high-strength cement plate according to claim 1 is characterized in that: said addition material comprises a kind of or two or more of bluestone powder, flyash and saw foam.

4. magnesite high-strength cement plate according to claim 1 is characterized in that: the order number of said glasscloth is 10 orders.

5. the preparation method of a magnesite high-strength cement plate as claimed in claim 1, it is characterized in that: step is:

⑴ stir rice husk addition material start 5 minutes by weight ratio, adds the magnesium chloride modified water then, when beginning to stir, adds magnesium oxychloride, after 10 minutes, adds phosphoric acid, skimmer, promptly forms mixture slurry after 5 minutes;

⑵ the thickness of adjustment shaper, the mould of packing into then adds layer of glass cloth in mould; The mixture slurry of on this glasscloth, annotating, the thickness of mixture slurry is 0.2cm, the vibrations rolling plates; Make glasscloth and mixture slurry thorough mixing; Back and forth form the stack of multilayer woven glass fabric and mixture slurry thus, when operation, keep vibrations;

⑶ be placed on mould and send into curing room on the steelframe, curing room temperature 20-40 degree, and atmospheric moisture 40-60 degree, 20 hours can the undercarriage demoulding;

⑷ after the undercarriage demoulding, maintenance 30 days under the state of nature in the open uses machinery to open the system tongue-and-groove tenon fourth of the twelve Earthly Branches, gets product.