CN103223754A - Magnesium oxide foamed fireproof plate and its production method - Google Patents

Abstract

The invention discloses a magnesium oxide foamed fireproof plate and its production method. The magnesium oxide foamed fireproof plate consists of an upper cover plate and a lower cover plate composed of glass fiber cloth, and a magnesium oxide fill plate filled between the upper cover plate and the lower cover plate. The magnesium oxide fill plate comprises the following components by mass: 30-45% of magnesium oxide, 20-30% of a filling material, 5-25% of a flame retardant, 10-25% of an auxiliary agent, and 2-8% of a foaming agent. The filling material is crushed rice husks or wheat straws. The flame retardant consists of, by weight: 22% of aluminum hydroxide, 28% of magnesium hydroxide, 35% of zinc borate, and 15% of antimony trioxide. The foaming agent is AF-18. The auxiliary agent comprises the following components by mass: 20-40% of a stabilizer, 15-30% of an antioxidant, 10-35% of perlite, and 5-20% of pulverized coal. The stabilizer is a calcium-zinc composite stabilizer composed of the following components by weight: 7% of calcium 2-ethylhexanoate, 1% of zinc neodecanoate, 15% of triphenyl phosphite, 2% of bisphenol A, and 75% of paraffin. The antioxidant is a mixture prepared from magnesium sulfate and sodium hydroxide in a mass mole ratio of 4.6:3.2. The magnesium oxide foamed fireproof plate provided in the invention saves cost, and has superior thermal performance and physical performance.

Description

Magnesia foaming fireproof plate and production method thereof

Technical field

The invention belongs to building material technical field, particularly a kind of magnesia foaming fireproof plate and production method thereof.

Background technology

Along with the attention of people, more and more higher to the requirement of construction material fire protecting performance to the public place fire-fighting.

Domestic PLASTIC LAMINATED manufacturer selects for use aluminium silicate wool plate, expanded pearlite rock beam, vermiculite board, polyurethane foam board, sulphate aluminium cement plate as anti-fire door core board mostly, but because these quality of materials are bigger, cause the weight of fireproof door excessive, the door load overweight, reduce service life, and production and use cost are too high.

Summary of the invention

For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of cost low, the PLASTIC LAMINATED that flameproof effect is good.

In order to realize above-mentioned target, the present invention adopts following technical scheme:

Magnesia foaming fireproof plate, magnesia foaming fireproof plate comprise the upper and lower overlay of being made up of combine glass cloth, and are filled in the magnesia infill panel between the coverage rate up and down; Above-mentioned magnesia infill panel comprises following mass percent component:

Magnesia 30～45%,

Inserts 20～30%,

Fire retardant 5～25%,

Assistant 10～25%,

Blowing agent 2～8%;

Inserts is rice husk or wheat straw after pulverizing; The percentage by weight component of fire retardant is: aluminium hydroxide 22%, magnesium hydroxide 28%, Firebrake ZB 35%, antimony trioxide 15%; Blowing agent is that the above-mentioned assistant of AF-18 comprises following mass percent component: stabilizing agent 20～40%, antioxidant 15～30% perlites 10～35% fine coal 5～20%, stabilizing agent is a calcium-zinc composite stabilizing agent, the percentage by weight component of calcium-zinc composite stabilizing agent comprises: 2 ethyl hexanoic acid calcium 7%, zinc neodecanoate 1%, triphenyl phosphite 15%, bisphenol-A 2%, paraffin 75%; Antioxidant is the mixture that magnesium sulfate and NaOH form by quality mole proportioning 4.6:3.2 configuration.

Aforesaid magnesia foaming fireproof plate, the built-up sequence of combine glass cloth are glass fabric, unidirectional roving, glass fabric.

Aforesaid magnesia foaming fireproof plate, the mass percent component is preferably: magnesia 43%, inserts 27%, fire retardant 10%, assistant 15%, blowing agent 5%.

Aforesaid magnesia foaming fireproof plate, assistant mass percent component is preferred: stabilizing agent 30%, antioxidant 25%, perlite 25%, fine coal 20%.

Aforesaid magnesia foaming fireproof plate and production method thereof comprise:

(1) takes by weighing magnesia, inserts, fire retardant, stabilizing agent, antioxidant, perlite, fine coal, water-soluble blowing agent according to the mass percent component of magnesia infill panel respectively;

(2) the antioxidant water is made into the solution that 20 Ke ∕ rise, again with magnesia, fire retardant, stabilizing agent add the solution that is made into by above-mentioned antioxidant successively and mix;

(3) inserts and perlite and fine coal being sent into mixer does and mixes;

(4) (3) are poured into mixed in (2), adding water soluble blowing agent in mixed liquor stirs into foamed material again;

(5) foamed material that stirs is poured onto in the template that is placed with upper and lower overlay in advance, makes foamed material between upper and lower overlay, make firm by ramming and flatten;

(6) template is transported in the curing kilns, behind maintenance 6-8h under 30 ℃ of temperature conditions, reaction finishes the back demoulding.

Usefulness of the present invention is: the present invention adopts foaming fireproof plate, adopts rice husk or wheat straw after pulverizing to do inserts, has saved cost, and the design of the special PLASTIC LAMINATED of the present invention, makes the hot property of product and physical property all very superior.

The specific embodiment

Below in conjunction with specific embodiment the present invention is done concrete introduction.

For advantage of the present invention can be described, the prescription of magnesia infill panel have been enumerated 3 embodiment described, the mass percent of these four embodiment is as shown in table 1:

The percentage by weight of each embodiment of table 1

Inserts is rice husk or wheat straw after pulverizing; The percentage by weight component of fire retardant is: aluminium hydroxide 22%, magnesium hydroxide 28%, Firebrake ZB 35%, antimony trioxide 15%; Blowing agent is AF-18, assistant mass percent component is: stabilizing agent 30%, antioxidant 25%, perlite 25%, fine coal 20%, stabilizing agent is a calcium-zinc composite stabilizing agent, the percentage by weight component of calcium-zinc composite stabilizing agent is: 2 ethyl hexanoic acid calcium 7%, zinc neodecanoate 1%, triphenyl phosphite 15%, bisphenol-A 2%, paraffin 75%; Antioxidant is the mixture that magnesium sulfate and NaOH form by quality mole proportioning 4.6:3.2 configuration.The built-up sequence of combine glass cloth is glass fabric, unidirectional roving, glass fabric.

4 embodiment in the table 1 are produced as follows:

(1) takes by weighing magnesia, inserts, fire retardant, stabilizing agent, antioxidant, perlite, fine coal, blowing agent according to the mass percent component of magnesia infill panel respectively;

(2) the antioxidant water is made into the solution that 20 Ke ∕ rise, again with magnesia, fire retardant, stabilizing agent add the solution that is made into by above-mentioned antioxidant successively and mix;

(3) inserts and perlite and fine coal being sent into mixer does and mixes;

(4) (3) are poured into mixed in (2), in mixed liquor, add blowing agent again, stir into foamed material;

(5) foamed material that stirs is poured onto in the template that is placed with upper and lower coverage rate in advance, makes foamed material between upper and lower coverage rate, make firm by ramming and flatten;

(6) template is transported in the curing kilns, behind maintenance 6-8h under 30 ℃ of temperature conditions, reaction finishes the back demoulding.

To the magnesia foaming fireproof plate that each embodiment made, carry out performance test, the result such as the table 2 that draw.

The performance of each embodiment of table 2

As can be seen from Table 2, mechanical performance and the hot property of 3 embodiment of the present invention are all fine, and hot strength, the big more explanation stretch capability of bending strength value are strong more; Flame retardancy of the present invention reaches B ₁Belong to difficult combustion type, anti-flammability reaches V ₀Be highest level, the low more explanation thermal and insulating performance of thermal conductivity factor is good more.

More than show and described basic principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and the foregoing description does not limit the present invention in any form, and all employings are equal to the technical scheme that mode obtained of replacement or equivalent transformation, all drop in protection scope of the present invention.

Claims (5)

1. the magnesia foaming fireproof plate is characterized in that, above-mentioned magnesia foaming fireproof plate comprises the upper and lower overlay of being made up of combine glass cloth, and is filled in the magnesia infill panel between the coverage rate up and down; Above-mentioned magnesia infill panel comprises following mass percent component:

Magnesia 30 ~ 45%,

Inserts 20 ~ 30%,

Fire retardant 5 ~ 25%,

Assistant 10 ~ 25%,

Blowing agent 2 ~ 8%;

Above-mentioned inserts is rice husk or wheat straw after pulverizing; The percentage by weight component of above-mentioned fire retardant is: aluminium hydroxide 22%, magnesium hydroxide 28%, Firebrake ZB 35%, antimony trioxide 15%; Above-mentioned blowing agent is that the above-mentioned assistant of AF-18 comprises following mass percent component: stabilizing agent 20 ~ 40%, antioxidant 15 ~ 30% perlites 10 ~ 35% fine coal 5 ~ 20%, the aforementioned stable agent is a calcium-zinc composite stabilizing agent, the percentage by weight component of above-mentioned calcium-zinc composite stabilizing agent is: 2 ethyl hexanoic acid calcium 7%, zinc neodecanoate 1%, triphenyl phosphite 15%, bisphenol-A 2%, paraffin 75%; Above-mentioned antioxidant is the mixture that magnesium sulfate and NaOH form by quality mole proportioning 4.6:3.2 configuration.

2. magnesia foaming fireproof plate according to claim 1 is characterized in that, the built-up sequence of combinations thereof glass fabric is glass fabric, unidirectional roving, glass fabric.

3. magnesia foaming fireproof plate according to claim 1 is characterized in that, above-mentioned mass percent component is preferably: magnesia 43%, inserts 27%, fire retardant 10%, assistant 15%, blowing agent 5%.

4. magnesia foaming fireproof plate according to claim 1 is characterized in that, above-mentioned assistant mass percent component is preferred: stabilizing agent 30%, antioxidant 25%, perlite 25%, fine coal 20%.

5. produce the production method of magnesia foaming fireproof plate as claimed in claim 1, it is characterized in that, comprise that (1) takes by weighing magnesia, inserts according to the mass percent component of magnesia infill panel respectively, fire retardant, stabilizing agent, antioxidant, perlite, fine coal, blowing agent;

(2) the antioxidant water is made into the solution that 20 Ke ∕ rise, again with magnesia, fire retardant, stabilizing agent add the solution that is made into by above-mentioned antioxidant successively and mix;

(3) inserts and perlite and fine coal being sent into mixer does and mixes;

(4) (3) are poured into mixed in (2), in mixed liquor, add blowing agent again, stir into foamed material;

(5) foamed material that stirs is poured onto in the template that is placed with upper and lower coverage rate in advance, makes foamed material between upper and lower coverage rate, make firm by ramming and flatten;

(6) template is transported in the curing kilns, behind maintenance 6-8h under 30 ℃ of temperature conditions, reaction finishes the back demoulding.