阅读说明：本技术 一种微波改性无机胶凝材料、其制备方法及其应用 (Microwave modified inorganic cementing material, preparation method and application thereof ) 是由 席宗隆 李庆峰 于 2019-11-28 设计创作，主要内容包括：本发明公开了一种微波改性无机胶凝材料、其制备方法及其应用,微波改性无机胶凝材料的原料组分包括：硫铝酸盐水泥20～50份,水20～50份,硅微粉20～50份,硅酸钠溶液5～15份,纤维素0.1～1.5份,氧化锂0.1～2份,工业乳胶粉1～2份和引气剂0.1～3份。本发明无机胶凝材料,原料组分简单、成本低廉,无有害物质,环境友好,增强效果显著；可用于制备木质板材,不仅环保无甲醛无污染,还具有阻燃防火特性,可达到国家建材A1级防火标准,板材强度等达到或超过木质密度板、家具板、胶木板等的相关要求,具有质轻高强的特性；还可用于制备建筑保温材料、轻质水泥隔墙板板芯、地暖基材等,防火、隔音、轻质、高强、环保,且成本低廉,尤其是在微波辐照条件下,产品强度提升更加显著。(The invention discloses a microwave modified inorganic cementing material, a preparation method and application thereof, wherein the microwave modified inorganic cementing material comprises the following raw material components: 20-50 parts of sulphoaluminate cement, 20-50 parts of water, 20-50 parts of silica micropowder, 5-15 parts of sodium silicate solution, 0.1-1.5 parts of cellulose, 0.1-2 parts of lithium oxide, 1-2 parts of industrial latex powder and 0.1-3 parts of air entraining agent. The inorganic cementing material has the advantages of simple raw material components, low cost, no harmful substances, environmental friendliness and remarkable enhancing effect; the composite material can be used for preparing wood boards, is environment-friendly, free of formaldehyde and pollution, has flame-retardant and fireproof characteristics, can reach the national building material A1-grade fireproof standard, has the board strength and the like meeting or exceeding the relevant requirements of wood density boards, furniture boards, bakelite boards and the like, and has the characteristics of light weight and high strength; the composite material can also be used for preparing building heat-insulating materials, light cement partition board cores, floor heating base materials and the like, is fireproof, sound-insulating, light, high in strength, environment-friendly and low in cost, and particularly improves the product strength more obviously under the microwave irradiation condition.)

1. A microwave modified inorganic cementing material is characterized in that: the raw material components comprise: 20-50 parts of sulphoaluminate cement, 20-50 parts of water, 20-50 parts of silica micropowder, 5-15 parts of sodium silicate solution, 0.1-1.5 parts of cellulose, 0.1-2 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 0.1-3 parts of air entraining agent.

2. The microwave-modified inorganic cementitious material of claim 1, wherein: the mesh number of the silicon micro powder is 1000-1200 meshes.

3. The microwave-modified inorganic cementitious material of claim 1 or 2, wherein: the modulus of the sodium silicate solution is 2.2-2.3M.

4. The preparation method of the microwave modified inorganic cementing material of any one of the claims 1 to 3, characterized in that: the method comprises the following steps:

1) mixing sulphoaluminate cement, silica micropowder and industrial latex powder into powder;

2) mixing water, sodium silicate solution, cellulose and lithium oxide into a liquid material;

3) adding an air entraining agent into the liquid material obtained in the step 1), adding the powder obtained in the step 2), and uniformly mixing to form a gelled slurry.

5. The application of the microwave modified inorganic cementing material of any one of the claims 1 to 3, is characterized in that: under the microwave irradiation condition, compounding the microwave modified inorganic cementing material with waste wood to prepare a wood-based plate; the microwave modified inorganic cementing material comprises the following raw material components: 22-25 parts of sulphoaluminate cement, 40-50 parts of water, 21-25 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 0.1-0.2 part of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the microwave modified inorganic cementing material to the waste wood is 1: (1-4).

6. The application of the microwave modified inorganic cementing material of any one of the claims 1 to 3, is characterized in that: under the microwave irradiation condition, mixing the microwave modified inorganic cementing material with the polyphenyl particles to prepare a heat-insulating material; the microwave modified inorganic cementing material comprises the following raw material components: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silicon micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 2-3 parts of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the polyphenyl particles to the sulphoaluminate cement in the inorganic cementing material is 1: (8-10).

7. The application of the microwave modified inorganic cementing material of any one of the claims 1 to 3, is characterized in that: under the microwave irradiation condition, mixing the microwave modified inorganic cementing material with the polyphenyl particles to prepare a board core material of the light partition board; the microwave modified inorganic cementing material comprises the following raw material components: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 1.4-2.1 parts of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the polyphenyl particles to the sulphoaluminate cement in the inorganic cementing material is (0.5-0.7): (8-10).

8. The application of the microwave modified inorganic cementing material of any one of the claims 1 to 3, is characterized in that: under the microwave irradiation condition, the method is used for preparing the floor heating paving base material; the microwave modified inorganic cementing material comprises the following raw material components: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial latex powder and 0.1-0.2 part of air entraining agent, wherein the parts are in parts by mass.

9. The use of the microwave-modified inorganic cementitious material of claim 8, wherein: ground warms up and lays the substrate and be grooved cement ceramic tile, during the use, warms up the water pipe in the inslot of cement ceramic tile is laid, warms up the water pipe surface and covers graphite material decentralized heating.

10. Use of a microwave-modified inorganic cementitious material according to any one of claims 6 to 9, characterised in that: the power of the microwave irradiation was 20 kw.

Technical Field

The invention relates to a microwave modified inorganic cementing material, a preparation method and application thereof, belonging to the field of inorganic cementing materials.

Background

At present, a large number of standard boards are produced on the market by composite pressing of sawdust, sawmilling waste, wood powder, small wood strips, wood blocks and organic cementing materials (most of aldehydes, starch and resin cementing materials), and the boards mainly comprise multilayer solid wood furniture boards, bakelite boards, wood density boards and the like. Such composite wood panels are widely used as a cheaper alternative to solid wood panels. However, the preparation of such sheet materials requires the use of organogel materials, which contain volatile or semi-volatile harmful substances, and thus causes pollution to the production environment and the use environment. Nowadays, the national environmental protection management is more strict, many manufacturers of the plates are stopped due to environmental protection problems, and the whole industry faces the risk of being eliminated.

At present, cement wood fiber boards are also available on the market, the boards need to be wrapped by filiform wood fibers and cement, the board has the defects of poor strength and the like, can only be used as a decorative board, and has a great difference in strength with wood density boards, furniture boards and bakelite boards which are used in large quantities on the market.

Disclosure of Invention

The invention provides a microwave modified inorganic cementing material, a preparation method and application thereof, and a wood board, a building heat-insulating material, a light cement partition board core, a floor heating base material and the like prepared by using the microwave modified inorganic cementing material have the advantages of light weight, high strength, environmental protection, low cost and the like.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a microwave modified inorganic cementing material comprises the following raw material components: 20-50 parts of sulphoaluminate cement, 20-50 parts of water, 20-50 parts of silica micropowder, 5-15 parts of sodium silicate solution, 0.1-1.5 parts of cellulose, 0.1-2 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 0.1-3 parts of air entraining agent.

The microwave modified inorganic cementing material can be used for preparing wood boards, is environment-friendly, free of formaldehyde and pollution, has flame retardant and fireproof characteristics, can reach the national building material A1-grade fireproof standard, has the board strength and the like meeting or exceeding the relevant requirements of wood density boards, furniture boards, bakelite boards and the like, and has the characteristics of light weight and high strength; the sulphoaluminate cement is a main component of the cementing material, has the characteristic of quick initial setting, and can form a better crystalline shape under the microwave condition so as to improve the adhesive strength; the high-mesh silicon micropowder can greatly increase the strength of the material after the material is stirred under pressure; the sodium silicate solution is rapidly solidified in a microwave state, so that the mucilage is rapidly formed in the pressure stirring process, and the sodium silicate solution around the lithium oxide is rapidly expanded and solidified to form lightweight aggregate similar to polyphenyl particles under the help of high-temperature heating of the lithium oxide and microwave catalysis; the cellulose increases the liquid viscosity to make the mucilage easier to operate; lithium oxide can release heat rapidly under the microwave condition to promote sulphoaluminate cement to be cured rapidly, the formed high-temperature area enables sodium silicate to expand and cure rapidly, and the materials are enabled to evaporate water from inside to outside; the latex powder is used for increasing the colloid strength, and is preferably watt industrial latex powder 4115N; the air entraining agent is added to remove micro bubbles generated when powder and liquid are stirred, and the air entraining agent is preferably German Germany 655; and the specific proportions of the material components are synergistically promoted, so that the aims of high strength and low density are fulfilled, and the fireproof sound insulation board is excellent in fireproof and sound insulation effects, economic and environment-friendly.

In order to further improve the reinforcing effect of the microwave modified inorganic cementing material, the mesh number of the silicon micro powder is 1000-1200 meshes; the modulus of the sodium silicate solution is 2.2-2.3M.

The preparation method of the microwave modified inorganic cementing material comprises the following steps:

1) mixing sulphoaluminate cement, silica micropowder and industrial latex powder into powder;

2) mixing water, sodium silicate solution, cellulose and lithium oxide into a liquid material;

3) adding an air entraining agent into the liquid material obtained in the step 1), adding the powder obtained in the step 2), and uniformly mixing to form a gelled slurry.

Compared with the method of directly mixing all the materials, the method has the advantages of good mixing uniformity, less microbubble content and stronger enhancing effect.

As an application scheme of the inorganic cementing material, under the condition of microwave irradiation, the microwave modified inorganic cementing material is compounded with waste wood to prepare a wood-based plate; at this time, preferably, the raw material components of the microwave-modified inorganic cement include: 22-25 parts of sulphoaluminate cement, 40-50 parts of water, 21-25 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 0.1-0.2 part of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the microwave modified inorganic cementing material to the waste wood is 1: (1-4). This allows the synergistic promotion of the materials to be optimised and the strength of the resulting panel to be optimised.

As another application scheme of the inorganic cementing material, under the condition of microwave irradiation, the microwave modified inorganic cementing material is mixed with the polyphenyl particles to prepare a heat-insulating material; at this time, preferably, the raw material components of the microwave-modified inorganic cement include: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silicon micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 2-3 parts of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the polyphenyl particles to the sulphoaluminate cement in the inorganic cementing material is 1: (8-10). Therefore, the requirements of light weight and high strength can be better met, and the fireproof, sound insulation and heat preservation effects are optimal.

As a third application scheme of the inorganic cementing material, under the microwave irradiation condition, the microwave modified inorganic cementing material is mixed with the polyphenyl particles to prepare a plate core material of the light partition plate; at this time, preferably, the raw material components of the microwave-modified inorganic cement include: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 1.4-2.1 parts of air entraining agent, wherein the parts are in parts by mass; the mass ratio of the polyphenyl particles to the sulphoaluminate cement in the inorganic cementing material is (0.5-0.7): (8-10). The product thus obtained has the highest strength, the lowest density, and is fire-proof and sound-proof.

As a fourth application scheme of the inorganic cementing material, the inorganic cementing material is used for preparing a floor heating paving base material under the microwave irradiation condition; the microwave modified inorganic cementing material comprises the following raw material components: 40-50 parts of sulphoaluminate cement, 30-50 parts of water, 40-50 parts of silica micropowder, 10-15 parts of sodium silicate solution, 0.3-0.8 part of cellulose, 0.5-1.5 parts of lithium oxide, 1-2 parts of industrial emulsion powder and 0.1-0.2 part of air entraining agent, wherein the parts are in parts by mass. Thus, the weighing capacity is best, the weight is lightest, and the heat preservation effect is also best.

In order to facilitate use, the floor heating paving base material is a cement floor tile with a groove, when the floor heating water pipe is used, a floor heating water pipe is paved in the groove of the cement floor tile, and the surface of the floor heating water pipe is covered with a graphite material for dispersed heating. The requirement on the strength of the floor heating base material is high, the floor heating base material can bear load when being laid on the ground, and meanwhile, the heat preservation performance is good, and the microwave modified inorganic cementing material can well meet the requirements on high strength and heat preservation of the floor heating base material.

When the microwave modified inorganic cementing material is applied, the preferred power of microwave irradiation is 20 kw.

The prior art is referred to in the art for techniques not mentioned in the present invention.

The microwave modified inorganic cementing material has the advantages of simple raw material components, low cost, no harmful substances, environmental friendliness and remarkable enhancing effect; the composite material can be used for preparing wood boards, is environment-friendly, free of formaldehyde and pollution, has flame-retardant and fireproof characteristics, can reach the national building material A1-grade fireproof standard, has the board strength and the like meeting or exceeding the relevant requirements of wood density boards, furniture boards, bakelite boards and the like, and has the characteristics of light weight and high strength; the composite material can also be used for preparing building heat-insulating materials, light cement partition board cores, floor heating base materials and the like, is fireproof, sound-insulating, light, high in strength, environment-friendly and low in cost, and particularly improves the product strength more obviously under the microwave irradiation condition.

Detailed Description

In order to better understand the present invention, the following examples are further provided to illustrate the present invention, but the present invention is not limited to the following examples.