CN100415671C - A kind of production method of low temperature ceramic matrix polymer composite material - Google Patents

Abstract

The invention relates to a method for producing a low-temperature ceramic-based polymer composite material by using industrial waste slag and waste plastic, and belongs to the technical field of building materials. The components of the composite material are matched by weight ratio, and the ratio is industrial waste residue: waste plastic: modifier: accelerator: retarder: water = 100: 20-100: 6-25: 0-10: 1.0-2.5 : 20-50. Various raw materials are processed, mixed materials are prepared, molded, and steam cured to form a composite material interwoven with low-temperature ceramics and high molecular polymers. This composite material is non-toxic and harmless, corrosion-resistant, heat-and-humidity resistant, freeze-thaw resistant, and has excellent properties of wood, ceramics, stone and polymer materials. Compared with the prior art, it has the advantages of low cost, high waste utilization rate, simple process, large-scale utilization of industrial waste residues and urban wastes, and the like.

Description

A kind of production method of low temperature ceramic matrix polymer composite material

1. Technical field:

The invention relates to a method for producing low-temperature ceramic-based polymer composite materials by using industrial waste slag and waste plastics, belonging to the technical field of building materials.

2. Background technology:

1. Technical status of cementitious materials produced from industrial waste residues

The annual output of my country's industrial waste residues such as mine tailings, coal gangue, fly ash, smelting slag, phosphorus slag, sludge, etc. has reached more than 900 million tons, and the cumulative stockpile of 7 billion tons over the years has been less than 50%. To protect the environment and save resources, it is necessary to turn waste into resources. At present, the bulk utilization of industrial waste in my country is mainly concentrated in Portland cement, concrete, wall materials, road construction, mine or low-lying land backfill.

GB1344-1999 clearly stipulates that it is allowed to add granulated blast furnace slag with a mass ratio of 20-70% in cement to produce slag Portland cement; it is allowed to add fly ash with a mass ratio of 20-40% in cement to produce powder Coal ash portland cement; it is allowed to add pozzolanic ash with a mass ratio of 20-50% in cement to produce pozzolan portland cement; in addition, phosphorus slag, calcined coal gangue, burnt clay, ferroalloy slag, non-ferrous metal smelting slag and other industrial The application of waste slag in cement admixture has also been industrialized.

JGJ28-86 also stipulates that it is allowed to add 10-20% fly ash to replace cement in concrete; it is allowed to add 10-40% fly ash to replace cement in mortar.

Therefore, the basic technology for the application of industrial waste residues in cement and concrete is mature. However, due to the incorporation of industrial waste residues, the physical properties of cement or concrete have changed, such as prolonged setting time, reduced early strength, decreased grade, and prominent bleeding. In order to solve these problems, the modification and activation technology of industrial waste residues has been produced, such as calcium addition treatment, single alkali excitation (lime, water glass, etc.), sulfate excitation (gypsum and sodium sulfate), physical fine grinding or physical and A technical approach combining chemical excitation. Using these methods undoubtedly solves some problems in the blending process of the admixture, but it does not break away from the technical system whose main feature is cement clinker.

Although traditional Portland cement has undeniable advantages, it exhibits environmental pollution (large emissions of CO ₂ , SO ₂ , NO _X and dust), resource (limestone and clay) and energy (coal, electricity) consumption, and durability In order to solve the problems of poor performance and other problems, scholars from various countries have carried out research on the development of new cementitious materials on the basis of the activation of industrial waste residues.

French J.Davidovits, on the basis of studying ancient building materials, used calcined kaolin as raw material, and prepared geopolymer cement (Geopolymer cement) with water glass and caustic soda as activators; in 1957, Ukrainian micro. De Gluvsky Alkali-activated slag cement (AAC) was invented with slag as the main raw material and water glass, caustic soda and lime as activators. In recent years, Chinese scholars Wu Zhongwei, Ma Huizhen, Yuan Hongchang, Zheng Juanrong, Yuan Ling, Dai Xinxiang, Ni Wen, Ma Hongwen, etc. have conducted follow-up analysis on the application, current situation and development prospects of these two types of materials; The performance, characteristics and mechanism of alkali-activated cementitious materials are described with a large amount of research data; in foreign countries, ceramic cement (Japan), "pyrament cement" prepared with slag, metakaolin and fly ash as main raw materials and alkali as activator " (United States), "F cementitious material" (Finland) have been widely used in nuclear waste solidification, road repair, mold materials, and artificial stone.

Chinese scholars have also made some progress in the research of alkali-activated gelling materials:

CN85100571 discloses a production method of phosphorus slag cement, which is characterized in that it is made by mixing and grinding phosphorus slag, Glauber's salt or potassium sulfate, and cement clinker, wherein phosphorus slag accounts for 60-95%, and Glauber's salt or potassium sulfate is calculated as _Na2O It accounts for 0.4-1%, Portland cement clinker accounts for 5-40%.

CN200410155539.0 discloses a polymerized aluminum silicate cement, the characteristic formula of which consists of: 0-80% of modified waste residue, 0-80% of activated waste residue, and 5-20% of admixture. The waste residue includes fly ash, boiling slag, coal gangue, perlite, metakaolin, and non-metallic mine tailings; there are two ways to modify waste residue: fly ash, boiling slag, and metakaolin are modified by drying and crushing. , coal gangue, perlite, and non-metallic mine tailings are modified by calcination and crushing; the waste residue activation method is: use one or more of the above-mentioned industrial waste residues in mass ratio with additives K ₂ CO ₃ , LiO ₂ , One or more of NaOH, KOH, Na ₂ SiF ₆ , Na ₅ P ₃ O ₁₀ , Na ₂ SO ₄ , K ₂ SO ₄ , K ₂ SiO ₃ , and Na ₂ SiO ₃ are mixed, calcined, and crushed to complete the activation. The admixture is firstly mixed with fly ash, dried, crushed, and then activated by mixing with other waste residues.

CN200310117752.8 discloses a preparation method of aluminosilicate mineral polymer material. It is characterized in that sodium hydroxide or potassium hydroxide and sodium silicate are formulated as an activator solution, added to aluminosilicate composed of metakaolin and fly ash, stirred into a colloidal state, and pressed to form at 5-8MPa. Released from the mold and dried to a geopolymer material. The molar ratio of sodium hydroxide or potassium hydroxide to sodium silicate is 3:1-8:1; the mass ratio of aluminosilicate to activator is 2.5:1-3.5:1.

CN02158190.8 discloses a production method of "dualization" wet cement of condensate, which is characterized in that: the main material (cathode) is slag, steel slag, boiling furnace slag, fly ash, waste glass, phosphorus slag, titanium Slag, fluorite slag, coal-fired boiler slag, calcined clay, shale, coal gangue, waste brick, waste tile, waste ceramics; the excitation material (anode) is gypsum, lime, strong alkali and strong alkali salt, clinker; Regulating materials are sugar, honey, tartaric acid and its salt, strong alkali, soluble carbonate, silicate, sulfate, lignosulfonate, borate, etc. The three major categories of components of this cement are all wet ground and used in a wet state. The aggregate (filler) when used is mountain sand, sea sand, river sand, Gobi sand, gravel, coal gangue, clay, tailings, and industrial waste.

Although the above-mentioned technologies have their own characteristics, they have common features: the main raw material is industrial waste residue, which has been calcined or melted at high temperature during the production process. If it has not been subjected to high temperature treatment during the production process, it must be calcined; the excitation material must be added with alkali and alkali metal salts; auxiliary materials usually use traditional cement concrete water reducers, retarders, etc. Therefore, the production of alkali-activated cementitious materials and Portland cement from industrial waste residues is a known technology. However, the technology of deep activation of industrial waste residues and the production of low-temperature ceramic materials (English: Chemically Bonded Ceramics, abbreviated as CBC) by autoclaved concrete technology has not been reported.

2. Technical status of comprehensive utilization of waste plastics

Waste plastics account for more than 30% of the volume of garbage. The annual output of urban garbage in my country has exceeded 140 million tons. More than 1/3 of the cities in the country are surrounded by garbage. Therefore, the treatment of urban garbage is a must in the process of urbanization in my country. environmental problems, and the most difficult substance in municipal waste is waste plastics. These waste plastics are of poor quality, mixed in variety, difficult to degrade naturally, high in recycling cost and low in recycling value.

Regarding the utilization of waste plastics, there are many reports at home and abroad, and they mainly focus on three aspects: one is heat utilization, that is, energy is obtained through incineration, which has been applied in waste incineration power generation, cement production, and metal smelting; the other is decomposition and preparation. Fuel oil and chemical products; the third is to use its thermal plasticity and cold rigidity to produce polymer composite materials for use as building materials. Among them, the third technical direction has always been a hot issue in the field of waste plastic recycling. Through years of research and development, many patented technologies have been formed.

CN90102171.7 discloses a waste sand and slag composite material and its production method, which is characterized in that waste plastics and regenerated waste sand or slag are micro-plasticized into agglomerates under heating, mixed and melted into a viscous form by an extruder, Into the mold compression molding.

CN91102608.6 discloses a method for recycling waste polyethylene film into powder, which is characterized in that the waste PE film is dissolved in xylene solvent and stirred and cooled to obtain PE xylene gel solid, which is then pulverized and sieved and mixed with an appropriate amount of inorganic Salt or regenerated PE powder are mixed and subjected to steam distillation for 1-2 hours, the xylene solvent is removed for recovery, washed with water, filtered and separated, and the PE powder is dried to obtain regenerated PE powder.

CN95110070.X discloses a synthetic imitation wood material, which is characterized in that the main material is waste plastics, such as discarded polyethylene, polyvinyl chloride, polypropylene, polystyrene, polyethylene terephthalate, polymethyl Methyl acrylate and other products; the additives are waste paper, wood chips, hair, plant stems or glass fibers; firstly, the waste plastics are crushed into debris below ^80mm3 , and the additives are crushed into debris below ^40mm3 ; according to waste plastics: Additives Material = 1 ~ 4: 1 stirring and mixing, the mixture is first fully mixed into a semi-solid substance at a temperature of 70 ~ 280 ° C, and then pressed at a temperature of 50 ~ 280 ° C and a pressure of 5 MPa ~ 30 MPa.

CN98124978.7 discloses a method for producing lightweight concrete building materials from waste plastics, which is characterized in that polystyrene and polyethylene waste plastics are cut into flakes or irregular particles of 1-20mm, cleaned and dried , granulate with a wire drawing granulator commonly used in the plastics processing industry, and use a plastic foaming extruder to make polyethylene granules into strips with a diameter of 1-20mm and cut into granules.

CN00112319.X discloses a light-weight wall insulation material, which is characterized in that its formula: fly ash 25-60%, perlite or vermiculite 10-20%, water glass 0-10%, organic silicon 0- 10%, waste plastic emulsion 20-40%. Wherein the waste plastic emulsion is made of foamed plastics.

CN01113683.9 discloses a method for preparing composite materials using waste plastics, which is characterized in that 100% thermoplastic waste plastics are used as the main raw material, 10-30% of plant fibers, 3-5% of adhesive resins are added, 5-5% of 10% of stone powder is used as filler, plus 0.5-2% of titanate coupling agent, 1-3% of lubricant and other auxiliary materials; the above-mentioned components are added to a high-speed mixer at the same time and mixed into a diameter of 3- 6mm oblate granules, and then processed according to the requirements of thermoplastic molding process to make composite finished products.

CN00113866.9 discloses a composite material made of waste raw materials, which is characterized in that the raw material formula of the composite material is: tailings sand 40-60% waste plastic 37.5-48.5% coupling agent 0.5-2.5% antiaging agent 0.5 -2.5% resin acid 0.5-3% industrial waste oil 1-3.5%.

CN03115332.1 discloses a composite material manhole cover, which is characterized in that the weight percentage of the raw material formula is: polyethylene waste plastic 50-80; river sand or ore 4-10; waste engine oil 2-7; ancient Malone 1-5; 1 to 5; the rest are fillings.

CN01123003.7 discloses a waste composite material, which is mainly made of thermoplastic waste, solid waste residue and waste liquid extracts in industrial and agricultural waste, and is characterized in that the material is composed of 100% industrial and agricultural waste, wherein It includes 51%-64% of thermoplastic waste (matrix), 35-48% of solid waste (filler), and 1-2% of industrial waste liquid (additive).

CN00109927.2 discloses a recycled composite material, which is characterized in that 50-70% polyethylene and 30-50% industrial waste sand are used as raw materials, and every 100 kg of raw materials contains 3-5 kg of waste engine oil, which is synthesized by high temperature heating after mixing The composite material is obtained by compression molding.

CN92104096.2 discloses a manufacturing process of a fly ash composite material, which is characterized in that: fly ash, polymer materials, asphalt, and glass fibers are used as raw materials, and the specific process is that the waste polymer materials are placed in an open After plasticizing on the rubber mixer to a molten state, add fly ash, asphalt, glass fiber, and benzoyl peroxide in sequence, and pull out the flakes after mixing evenly. After cooling, cut them into pellets in a pelletizer, and then extrude them. ,Pressing.

CN91107464.3 discloses a polystyrene concrete, which is characterized in that Portland cement: fly ash is 1:1 as the matrix, expanded polystyrene particles are aggregates, and the amount of mixing is the total volume of cement and fly ash Add 50-60% of water, mix and stir, vibrate and shape, after pre-curing, autoclave at 180°C for 9 hours, dry at 105°C, and then dry at 180°C and vacuum at 600-700 mmHg Prepared after vacuuming for 0.5 to 3 hours.

It can be seen from the above-mentioned disclosed technologies that any processing of waste plastics generally includes cleaning, crushing, mixing, granulation, extrusion, and compression molding of waste plastics. These processes are traditional methods of thermoplastic processing and are already known technologies. In the finally obtained composite materials, without exception, polymer (English: Polymer, abbreviated as PM) is used as the continuous matrix phase, and fibers or inorganic material particles are used as the dispersed phase. However, there is no report on the processing technology of waste plastics under aqueous conditions.

Based on the basic situation of the utilization of industrial waste residues and waste plastics, the low-temperature ceramic cementitious materials made of industrial waste residues have not yet been combined with waste plastics, and low-temperature ceramic body-based polymer composites (CBC-PM composites for short) are prepared by concrete prefabrication technology. ) reports.

3. Contents of the invention:

1, the object of the present invention is to provide a kind of production method of low-temperature ceramic-based polymer (CBC-PM) composite material, is to utilize the physical and chemical characteristics of industrial waste residue to make CBC-PM composite material with industrial waste residue and waste plastics, at first be prepared into A CBC cementitious material capable of hydration and solidification; the cementitious material is compounded with waste plastics and strengthened to prepare a CBC-PM composite material with excellent physical and mechanical properties to replace increasingly scarce wood, stone and ceramic materials Use, thus providing a new technical method for the utilization of industrial waste residue and waste plastics, reducing environmental pollution and realizing resource recycling.

2. Technical content of the present invention

2.1 Raw material and formula

1) Main raw material

There are two types of industrial waste: one is fly ash, phosphorus slag, metallurgical slag, slag and/or municipal waste incineration slag, which is characterized by high-temperature calcination or melting during the output process; the second is muddy or Sandy industrial waste, including coal gangue, mineral processing tailings, clay, red mud, sludge and/or river mud, is characterized in that it has not been subjected to high temperature during the production process, and contains carbon and crystalline water. Calcination at 600-850°C for 0.1-1.0 hours.

Waste plastics: including waste polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyester thermoplastics, waste plastic films, agricultural mulch films, or packaging bags, mixed in unknown proportions in most cases, and may also contain Common impurities such as water, soil and oil, these waste plastics are more common in garbage.

2) Additives

Modifier: a mixture of sodium hydroxide and water glass, the mass ratio of water glass to sodium hydroxide = 1.5 to 2.0;

Accelerator: cement kiln dust, which can be a powdery substance collected by a dust collector during the calcination of cement clinker;

Retarder: molasses, sodium lignosulfonate, the mass ratio of the two is 2-0.5.

3) Formulation:

The components are mixed according to the mass ratio, and the ratio is: industrial waste residue: waste plastic: modifier: accelerator: retarder: water = 100: 20-100: 6-25: 0-10: 1.0-2.5: 20 -50.

2.2 The production method of CBC-PM composite material consists of raw material processing, mixture preparation, molding, and maintenance procedures, of which:

1) Raw material handling

Treatment of industrial waste slag: the first type of industrial waste slag needs to be crushed into particles with a diameter of less than 10mm, and then ground to form a powder with a particle size of less than 0.08mm accounting for 90% to 100%; the second type of industrial waste slag after calcination treatment is directly Grinding, grinding into a powder with a particle size of less than 0.08mm accounting for 90% to 100%; the first and second types of industrial waste can be used separately, or two or more types can be used in combination, and they can be blended and ground when used together ;

After metering, the accelerator is ground together with industrial waste residue to form a powder with a particle size of less than 0.08mm, accounting for 90% to 100%;

Waste plastics treatment: The collected waste plastics must first be sorted to remove bricks, tiles, stones, metals and wood and other bulky substances, and then broken into particles or flakes with a maximum size of less than 8mm;

Preparation of additive aqueous solution: modifier, retarder and water are measured and then mixed and stirred to form a yellow transparent liquid;

2) Mixture preparation

Firstly measure the mixed and ground powder, crushed waste plastics and additive aqueous solution respectively, add waste plastics first under stirring state, then add additive aqueous solution and stir for 1-3 minutes, finally add powder, continue stirring for 5-8 minutes to become Mixture;

3) Molding

There are three molding methods to choose from:

Compression molding conditions: molding pressure 10-20MPa, hot-pressing temperature 90-140℃, holding time 10-30 minutes;

Tamping molding conditions: put the mold on for 2 to 6 hours to demould;

Pouring molding conditions: the vibration frequency is 60-120 times/minute, the amplitude is 0.25-6mm; the belt mold is placed for 4-8 hours to demould;

In the process of forming or placing with a mold, industrial waste gas containing carbon dioxide can be introduced into the mold cavity to accelerate the solidification of the green body, and the volume concentration of _CO2 is 18-95%;

4) steam curing

Process conditions: The molded products are placed in an autoclave and cured with steam, from room temperature to 90°C for 1-2 hours, at 90°C for 3-8 hours, at 90°C to high temperature 140-185°C for 1-2 hours, at high temperature and constant temperature Curing for 4 to 8 hours, and curing at high temperature to 60°C for 4 to 12 hours, when the temperature is lower than 60°C, take out the kettle.

3. Compared with the prior art, this technology has the following advantages:

1) Compared with the known polymer composite materials made of waste plastics, the concrete molding process is used instead of the traditional plastic extrusion method, which greatly improves the production efficiency; the material is strengthened with steam to avoid extrusion The use of the machine reduces the wear and tear of the equipment and power consumption, and greatly reduces the production cost. The waste plastics used in the present invention do not need to be cleaned and sorted, which makes it possible to use various low-quality mixed plastics in urban waste; in the final composite material, chemically bonded ceramic body (CBC) and polymer (PM) interact Interweaving, complementary advantages and properties, overcomes the shortage of inorganic particle materials simply filled with polymers in the polymer composite materials of the known technology, and shows the comprehensive performance of ceramics and high polymers.

2) Compared with the known alkali-activated gelling material derivative products, the present invention adopts a new composite and material strengthening technology, therefore, the performance of the product is completely different from the known technology, making the production cycle shorter and the product performance better , It completely avoids the oozing and pan-frost problems of soluble alkali and alkali metal salts.

3) Compared with known cement-based materials, the present invention greatly improves the utilization efficiency of solid waste, and solves the problems of traditional cement-based materials that are not durable, fire-resistant, corrosion-resistant and brittle.

4) Compared with known artificial wood, no toxic urea-formaldehyde resin or expensive epoxy resin or unsaturated polyester resin is used, but a large number of non-toxic thermoplastics are used. Therefore, the present invention is environmentally friendly.

5) Compared with traditional cement and gypsum particleboard, the material manufactured by the invention has better freeze-thaw resistance, damp heat and corrosion resistance, and stronger compression resistance, flexural resistance and impact resistance.

Four, description of drawings: Fig. 1 is technological process of the present invention.

5. Specific implementation

Example 1:

1) Formula composition (substance measurement units are parts by mass):

(1) Main raw material industrial waste: 60 parts of phosphorus slag, 20 parts of fly ash, 20 parts of coal gangue, 100 parts in total; 100 parts of agricultural mulch;

(2) modifier: the mass ratio of water glass and sodium hydroxide is 2, 15 parts of total mass;

(3) Accelerator: 5 parts of kiln dust;

(4) retarder: the mass ratio of molasses and sodium lignosulfonate is 2.0, and the total mass is 1.5 parts;

(5) Water: 50 parts

2) Process:

Measure the industrial waste residue and accelerator according to the formula, blend and grind it into a powder with a particle size of less than 0.08mm, accounting for 93%;

The agricultural mulch film is broken into particles whose maximum size is less than 8mm;

Modifier, retarder and water are formulated into additive aqueous solution.

First add waste plastics to the mixer, add additive aqueous solution under stirring state, stir for 3 minutes, add powder, continue stirring for 8 minutes, discharge the material, pour it into a 600×300×50mm mold welded by steel plate, vibrate for 2 minutes, After the surface is smoothed, the mold is rested for 8 hours and demoulded; after the green body is demoulded, it is placed in an autoclave for curing. The curing process parameters are: normal temperature to 90°C for 2 hours, 90°C for 8 hours, and 90°C to 185°C for heating 1 hour, 185 ℃ constant temperature insulation for 8 hours, 185 ℃ ~ 60 ℃ cooling for 8 hours, the surface of the product after leaving the kettle is polished and becomes a product. The test properties are: compressive strength 35MPa, flexural strength 11.5MPa, impact strength 1.3J/cm ² , water absorption 5.8%, softening coefficient 0.88, drying shrinkage 0.2%, strength loss 0.5% after 50 freeze-thaw cycles.

Example 2:

1) Formula composition (substance measurement units are parts by mass):

(1) Main raw material industrial waste: 30 parts of slag, 20 parts of fly ash, 50 parts of burnt clay, a total of 100 parts; 60 parts of urban garbage waste plastics;

(2) modifier: the mass ratio of water glass and sodium hydroxide is 1.75, 23 parts of total mass;

(3) Accelerator: 10 parts of kiln dust;

(4) retarder: the mass ratio of molasses and sodium lignosulfonate is 0.5, and the total mass is 2.5 parts;

(5) Water: 20 parts

2) Process:

Measure the industrial waste residue and accelerator according to the formula, blend and grind it into a powder with a particle size of less than 0.08mm accounting for 95%;

Municipal garbage waste plastics are broken into particles with a maximum size of less than 8mm;

Modifier, retarder and water are formulated into additive aqueous solution.

First add waste plastics to the mixer, add additive aqueous solution under stirring state, stir for 1 minute, add powder, continue stirring for 5 minutes, and then discharge the mixture. 20MPa, the mold is heated up and down, the temperature in the middle of the mold cavity is 95°C, and the pressure is maintained for 30 minutes to demould. Put the green body into an autoclave for curing. The curing process parameters are: normal temperature to 90°C for 1 hour, 90°C for 3 hours, 90°C to 140°C for 1 hour, 140°C for 4 hours, 140°C to 60°C Cool down for 4 hours, and the surface of the product after leaving the kettle becomes a product after polishing. The test properties are: compressive strength 35MPa, flexural strength 15MPa, impact strength 1.6J/cm ² , water absorption 4.3%, softening coefficient 0.92, and 50 freeze-thaw cycles with zero strength loss.

Example 3:

1) Formula composition (substance measurement units are parts by mass):

(1) Main raw material industrial waste residue: 60 parts of burnt red mud, 20 parts of fly ash, 20 parts of burnt tailings, 100 parts in total; 30 parts of urban garbage waste plastics;

(2) modifier: the mass ratio of water glass and sodium hydroxide is 1.5, 8 parts of total mass;

(3) retarder: the mass ratio of molasses and sodium lignosulfonate is 1.0, and the total mass is 1.0 parts;

(4) Water: 38 parts

2) Process:

Measure industrial waste residue and accelerator according to the formula, blend and grind into a powder with a particle size of less than 0.08mm, accounting for 95%; urban waste plastics are crushed into particles with a maximum size of less than 8mm;

Modifier, retarder and water are formulated into additive aqueous solution.

First add waste plastics to the mixer, add additive aqueous solution under stirring state, stir for 2 minutes, add powder, continue stirring for 7 minutes, and discharge the mixture. The mold was cured for 4 hours, and compressed CO ₂ gas was continuously fed into the mold cavity during the static curing process for 10 minutes. The demoulding green body is put into an autoclave for curing. The curing process parameters are: normal temperature to 90°C for 1.5 hours, 90°C for 6 hours, 90°C to 165°C for 1 hour, 165°C to 165°C for 6 hours, Cool down at 165°C to 60°C for 10 hours, and the surface of the product after leaving the kettle will become a product after polishing. The test properties are: compressive strength 26MPa, flexural strength 8.3MPa, impact strength 0.91J/cm ² , water absorption 8.5%, softening coefficient 0.83, strength loss of 1.5% after 50 freeze-thaw cycles.

Claims (7)

1. A production method of a low-temperature ceramic-based polymer composite, characterized in that: its raw materials and formula are, 1) The main raw materials are industrial waste residues and waste plastics, There are two types of industrial waste residues, the first type includes fly ash, phosphorus slag, metallurgical slag, slag and/or municipal waste incineration slag, and/or the second type of muddy or sandy industrial waste residue includes coal gangue, ore dressing tailings , red mud, sludge and/or river mud, Waste plastics include waste polyethylene, polypropylene, polyvinyl chloride, polystyrene, polyester thermoplastics, waste plastic films, agricultural mulch films, or packaging bags, 2) Additives Modifier: a mixture of sodium hydroxide and water glass, the mass ratio of water glass to sodium hydroxide is 1.5-2.0, Accelerator: cement kiln dust, Retarder: a mixture of molasses and sodium lignosulfonate, the mass ratio of the two is: 2-0.5, 3) Formula: The mass ratio of each component is industrial waste residue: waste plastic: modifier: accelerator: retarder: water = 100: 20-100: 6-25: 0-10: 1.0-2.5: 20-- 50. 2. The production method of a low-temperature ceramic-based polymer composite material according to claim 1, characterized in that: the accelerator cement kiln dust is a powdery substance collected by a dust collector during the calcination of cement clinker. 3. the production method of a kind of low-temperature ceramic-based polymer composite material according to claim 1, is characterized in that: the process of producing low-temperature ceramic-based polymer composite material according to the described raw material and formula is completed by the following steps, 1) Raw material treatment: the first type of industrial waste residue needs to be crushed into particles with a diameter of less than 10mm, and then ground into a powder with a particle size of less than 0.08mm accounting for 90% to 100%. The second type of industrial waste residue is calcined and directly ground , Grinding into a powder with a particle size of less than 0.08mm, accounting for 90% to 100%, After metering, the accelerator is ground together with industrial waste residue to form a powder with a particle size of less than 0.08mm, accounting for 90% to 100%. Waste plastic treatment: broken into particles or flakes with the largest size less than 8mm, Additive aqueous solution preparation: modifier, retarder and water are measured and then mixed and stirred to form a yellow transparent liquid. 2) Preparation of mixture: First, measure the mixed and ground powder, crushed waste plastics, and additive aqueous solution, first add waste plastic under stirring state, then add additive aqueous solution and stir for 1 to 3 minutes, finally add powder, continue After stirring for 5-8 minutes, it becomes a mixture. 3), molding: pressing molding, ramming molding or pouring molding, 4), steam curing. 4. The production method of a low-temperature ceramic-based polymer composite material according to claim 3, characterized in that: the second type of industrial waste slag is calcined at 600-850°C for 0.1-1.0 hours. 5. The production method of a low-temperature ceramic-based polymer composite material according to claim 3 or 4, characterized in that: the press molding conditions are a molding pressure of 10-20 MPa, a hot-pressing temperature of 90-140°C, The pressure holding time is 10-30 minutes; the tamping molding condition is to leave the mold for 2-6 hours to demould; the pouring molding condition is to vibrate at a frequency of 60-120 times/minute, the amplitude is 0.25-6mm, and to leave the mold for 4-8 hours to demould mold. 6. The production method of a low-temperature ceramic matrix polymer composite material according to claim 5, characterized in that: during the molding or belt mold placing process, the industrial waste gas containing carbon dioxide is passed into the mold cavity to To accelerate the solidification of green bodies, the volume concentration of _CO2 is 18-95%. 7. The production method of a low-temperature ceramic-based polymer composite material according to claim 3 or 4, characterized in that: the steam curing condition is that the molded products are stacked in an autoclave for steam curing, and the curing process conditions Curing at room temperature to 90°C for 1-2 hours, 90°C for 3-8 hours, 90°C to high temperature for 140-185°C for 1-2 hours, high temperature for 4-8 hours, high temperature for 60°C for 4-12 hours Hours, when the temperature is lower than 60 ℃ out of the kettle.

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