CN102888900B - Light heat preservation silicon and calcium compound plate - Google Patents

Abstract

The invention discloses a light heat preservation silicon and calcium compound plate, which consists of an outer layer structure and an inner layer structure. The plate is manufactured by waste coal ash generated by local rich coal mine resources and crop stalks, so that waste is recovered, and the plate is beneficial to environment friendliness. The plate takes inorganic substances such as powder quartz, quartz sand, sanding powder and the like as main raw materials, has the advantages of high strength, aging resistance, ultraviolet resistance, water resistance, fire prevention, heat preservation and the like, is widely applied, does not have toxic or side effect and is pollution-free.

Description

The compound silico-calcium composite plate of a kind of light thermal-insulating

Technical field

The present invention relates to the compound silico-calcium composite plate of a kind of light thermal-insulating, belong to the technical field of novel wall material.

Background technology

Calcium silicate board with microporous claims again gypsum composite board, is a kind of multicomponent material, is generally composited by natural gesso, white cement, glue, glass fiber.There is fire prevention, protection against the tide, sound insulation, the performance such as heat insulation, can attract water in air molecule, air dry time, can discharge again hydrone in the situation that of room air humidity, can suitably regulate Indoor Dry, humidity, increase comfort.Plaster of paris goods are again superfine fire proofing materials, in flame, can produce endothermic reaction, meanwhile, discharge hydrone and stop fire spreading, and can not decompose any poisonous, rodent, the suffocative gas of generation, can not produce any oxidizer or flue gas yet.

There is easily the shortcomings such as aging, poor dimensional stability, unreasonable structure, heat-insulating property be poor in the calcium silicate board with microporous produced at present.Recently; building fire frequently occurs; people are had higher requirement to the fireproof performance of heat insulating material; flyash and calcium carbide mud are applicable to make fire-type heat insulating material; utilize carbide slag and flyash to produce Outwall thermal insulation board, can utilize industrial waste carbide slag and flyash, be conducive to economize on resources, protection of the environment;, and for developing new product in novel wall material field.

Summary of the invention

The object of the invention is to for the deficiencies in the prior art, provide a kind of light thermal-insulating compound silico-calcium composite plate, it is made up of outer and two kinds of structures of internal layer, has thermal insulation, an advantage such as ageing-resistant, intensity good, economical environment-protective.

For reaching above object, the present invention adopts following technical scheme:

A kind of light thermal-insulating silico-calcium composite plate, is characterized in that, it is made up of top layer and two kinds of structures of internal layer, and the weight portion of its two kinds of structure constitutive materials is respectively:

Top layer:

Flyash 30-40, quartz sand 10-15, sanding powder 5-10, calcium carbide mud 10-15, magnesia 20-30, magnesium chloride 15-20, cement 30-40, modified pearl rock dust 10-20, glass fiber 2-5,

Described modified pearl rock is made by following method: crushed crude pearlite is added in high-speed kneading machine, preheating and drying is to 100-120 DEG C, add again 2-3% ammoniacal liquor and 0.2-0.5% silane coupler WD-70 to stir 20-30min, oven dry grinds to form 200-250 order powder, when wherein high-speed kneading machine stirs, rotating speed is 800-1000r/min

Internal layer:

Colliery powder 40-50, slag 20-30, konilite 20-25, rice husk 10-20, straw 20-30, sulphate aluminium cement 20-30, modified aluminium alumina 10-15, blowing agent 5-8,

Described modified aluminium alumina is made by following method: bauxite, light-magnesite powder and bauxite spinelle mix by 1-2:1-2:1 part by weight, at 700-800 DEG C, calcine 3-4h, after grind to form 200-300 order powder, admixing the polyvinylpyrrolidone that is equivalent to powder weight 1-2% stirs, dry, be ground into powder.

The preparation method of described light thermal-insulating silico-calcium composite plate, is characterized in that comprising the following steps:

(1) first straw is dropped in mill and pulverized, particle is controlled at 2-3mm;

(2) will flyash, quartz sand, sanding powder etc. stir in raw material input high-speed mixer by top layer formulation ratio, form compound, then add the water of the 30-40% of raw material components gross weight to be uniformly mixed to make top layer slurry for subsequent use at compound;

(3) will in the raw material input high-speed mixers such as colliery powder, slag, konilite, rice husk, stir by internal layer formulation ratio, form compound, add the water of the 35-45% of raw material components gross weight to be uniformly mixed at compound again and make mixed slurry, fully stir and form blank, blank is injected to mould and solidify at 40-45 DEG C of thermophilic, after solidifying, sheet material base substrate is sent in dry kiln, at 120-130 DEG C of temperature, be dried to moisture content < 5%, make internal layer foaming plate;

(4) first at one deck top layer, template upper berth slurry, above the internal layer foaming plate of making is placed on, between plate, leave the distance of 20-25 centimetre, top layer slurry is poured into the space between plate, internal layer foaming plate Surface mulch last layer top layer slurry, front-back all covers last layer top layer slurry, natural coagulation sizing, the thermostatic chamber of inserting again 50-65 DEG C carries out humidifying maintenance, can be made into the light thermal-insulating silico-calcium composite plate that can be used as materials for wall.

The rotating speed of described high-speed mixer is 150-200r/min.

Described blowing agent is neopelex.

The present invention has following beneficial effect:

Waste material flyash and straw that colliery resource generation is enriched in the compound silico-calcium composite plate utilization of light thermal-insulating of the present invention locality are made, and accomplish twice laid, are conducive to environmental protection.The compound silico-calcium composite plate of light thermal-insulating that the present invention produces is made up of outer and two kinds of structures of internal layer, adopting the inorganic matters such as konilite, quartz sand, sanding powder is primary raw material, there is the advantages such as intensity is high, ageing-resistant, uvioresistant, water-tolerant, fireproof heat insulating, of many uses, have no side effect, nuisanceless.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is further illustrated.

Embodiment

A kind of light thermal-insulating silico-calcium composite plate, it is made up of top layer and two kinds of structures of internal layer, and the weight portion of its two kinds of structure constitutive materials is respectively:

Top layer:

40 parts, flyash, 15 parts of quartz sands, 10 parts of sanding powders, 15 parts, calcium carbide mud, 30 parts, magnesia, 20 parts, magnesium chloride, 40 parts of cement, 20 parts of modified pearl rock dust, 5 parts of glass fiber,

Described modified pearl rock is made by following method: crushed crude pearlite is added in high-speed kneading machine, preheating and drying to 120 DEG C, add again 2.5% ammoniacal liquor and 0.3% silane coupler WD-70 to stir 30min, oven dry grinds to form 250 order powder, when wherein high-speed kneading machine stirs, rotating speed is 800r/min

Internal layer:

50 parts of colliery powders, 30 parts, slag, 25 parts of konilites, 20 parts, rice husk, 30 parts of straws, 30 parts of sulphate aluminium cements, 15 parts, modified aluminium alumina, 8 parts of blowing agents,

Described modified aluminium alumina is made by following method: bauxite, light-magnesite powder and bauxite spinelle mix by 2:2:1 part by weight, at 800 DEG C, calcine 4h, after grind to form 300 order powder, admixing the polyvinylpyrrolidone that is equivalent to powder weight 2% stirs, dry, be ground into powder.

The preparation method of described light thermal-insulating silico-calcium composite plate, comprises the following steps:

(1) first straw is dropped in mill and pulverized, particle is controlled at 3mm;

(2) will flyash, quartz sand, sanding powder etc. stir in raw material input high-speed mixer by top layer formulation ratio, form compound, then add 35% water of raw material components gross weight to be uniformly mixed to make top layer slurry for subsequent use at compound;

(3) will in the raw material input high-speed mixers such as colliery powder, slag, konilite, rice husk, stir by internal layer formulation ratio, form compound, add 40% water of raw material components gross weight to be uniformly mixed at compound again and make mixed slurry, fully stir and form blank, blank is injected to mould and solidify at 45 DEG C of thermophilics, after solidifying, sheet material base substrate is sent in dry kiln, at 125 DEG C of temperature, is dried to moisture content < 5%, makes internal layer foaming plate;

(4) first at one deck top layer, template upper berth slurry, above the internal layer foaming plate of making is placed on, between plate, leave the distance of 20 centimetres, top layer slurry is poured into the space between plate, internal layer foaming plate Surface mulch last layer top layer slurry, front-back all covers last layer top layer slurry, natural coagulation sizing, the thermostatic chamber of inserting again 60 DEG C carries out humidifying maintenance, can be made into the light thermal-insulating silico-calcium composite plate that can be used as materials for wall.

Wherein, the rotating speed of described high-speed mixer is 180r/min.

Blowing agent is neopelex.

The made light thermal-insulating silico-calcium composite plate property indices of the present embodiment is:

Proportion (g/cm3): 0.79, coefficient of thermal conductivity w/ (wk): 0.18,

Fire prevention temperature (DEG C) :-20-400, compressive strength (MPa): 9.16,

Tensile strength (MPa): 3.2 MOR (Mpa): 8.24

Mass loss rate is not more than 5%, and loss of strength rate is not more than 20%.

Claims (4)

1. a light thermal-insulating silico-calcium composite plate, is characterized in that, it is made up of top layer and two kinds of structures of internal layer, and the weight portion of its two kinds of structure constitutive materials is respectively:

Top layer:

Flyash 30-40, quartz sand 10-15, sanding powder 5-10, calcium carbide mud 10-15, magnesia 20-30, magnesium chloride 15-20, cement 30-40, modified pearl rock dust 10-20, glass fiber 2-5,

Described modified pearl rock is made by following method: crushed crude pearlite is added in high-speed kneading machine, preheating and drying is to 100-120 DEG C, add again 2-3% ammoniacal liquor and 0.2-0.5% silane coupler WD-70 to stir 20-30min, oven dry grinds to form 200-250 order powder, when wherein high-speed kneading machine stirs, rotating speed is 800-1000r/min

Internal layer:

Colliery powder 40-50, slag 20-30, konilite 20-25, rice husk 10-20, straw 20-30, sulphate aluminium cement 20-30, modified aluminium alumina 10-15, blowing agent 5-8,

Described modified aluminium alumina is made by following method: bauxite, light-magnesite powder and bauxite spinelle mix by 1-2:1-2:1 part by weight, at 700-800 DEG C, calcine 3-4h, after grind to form 200-300 order powder, admixing the polyvinylpyrrolidone that is equivalent to powder weight 1-2% stirs, dry, be ground into powder.

2. a preparation method for light thermal-insulating silico-calcium composite plate as claimed in claim 1, is characterized in that comprising the following steps:

(1) first straw is dropped in mill and pulverized, particle is controlled at 2-3mm;

(2) will in raw meal coal ash, quartz sand, sanding powder, calcium carbide mud, magnesia, magnesium chloride, cement, modified pearl rock dust and glass fiber input high-speed mixer, stir by top layer formulation ratio, form compound, then add the water of the 30-40% of raw material components gross weight to be uniformly mixed to make top layer slurry for subsequent use at compound;

(3) press internal layer formulation ratio by colliery powder, slag, konilite, rice husk, the straw that step (1) is pulverized, sulphate aluminium cement, in modified aluminium alumina and blowing agent input high-speed mixer, stir, form compound, add the water of the 35-45% of raw material components gross weight to be uniformly mixed at compound again and make mixed slurry, fully stir and form blank, blank is injected to mould and solidify at 40-45 DEG C of thermophilic, after solidifying, sheet material base substrate is sent in dry kiln, at 120-130 DEG C of temperature, be dried to moisture content < 5%, make internal layer foaming plate,

(4) first at one deck top layer, template upper berth slurry, above the internal layer foaming plate of making is placed on, between plate, leave the distance of 20-25 centimetre, top layer slurry is poured into the space between plate, internal layer foaming plate Surface mulch last layer top layer slurry, front-back all covers last layer top layer slurry, natural coagulation sizing, the thermostatic chamber of inserting again 50-65 DEG C carries out humidifying maintenance, can be made into the light thermal-insulating silico-calcium composite plate that can be used as materials for wall.

3. the preparation method of light thermal-insulating silico-calcium composite plate according to claim 2, is characterized in that, the rotating speed of described high-speed mixer is 150-200r/min.

4. the preparation method of light thermal-insulating silico-calcium composite plate according to claim 2, is characterized in that, described blowing agent is neopelex.