CN112080040B - Ceramic powder and application thereof - Google Patents
Ceramic powder and application thereof Download PDFInfo
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Abstract
The ceramic powder comprises the following components in parts by mass: 30-60 parts of metakaolin, 10-30 parts of potassium/albite, 10-30 parts of low-melting-point glass powder, 30-50 parts of zinc borate, 5-15 parts of fumed silica and 0.5-2 parts of a surface modifier. According to the invention, the granularity of the filler is refined and the granularity of each component is homogenized at the same time according to the grain size effect of ceramic sintering, so that the effect of sintering into ceramic is obviously improved. And by adding the self-made low-melting-point glass powder, the porcelain forming performance of the ceramic polyolefin at medium temperature and high temperature is improved, so that the strength of the ceramic powder and a PVC plate after porcelain forming is higher, the cracks of a ceramic body formed by sintering are fewer, and the deformation is small.
Description
Technical Field
The invention belongs to the field of processing and application of inorganic composite powder, relates to research and development of a polymer-based refractory material, and particularly relates to application of vitrified powder and PVC resin blended with the vitrified powder in a prepared refractory PVC plate.
Background
The ceramic powder is an inorganic composite powder capable of realizing rapid ceramic formation in a wide temperature range (400-1000 ℃), and is greatly different from the traditional ceramic powder, and the sintering characteristics of the traditional ceramic powder are high temperature (more than or equal to 1200 ℃), long heat preservation time, relatively strict requirements on temperature rise rate and sintering atmosphere, and unsuitability for application in extreme environments (such as fire). According to the liquid phase sintering principle, the original ceramic powder is improved, the performance of low-temperature ceramic formation is improved, the requirement of practical application is met, and the ceramic powder with excellent performance and capable of being applied to a polymer matrix is obtained.
Traditional hard system PVC panel possesses certain fire behaviour, but meet special cases such as conflagration and take place, can't withstand long-time high temperature, the powdered incomplete charcoal that can generate under flame, produce crackle or collapse, the effect of fire prevention does not exist, porcelainized powder with self-control fills in the PVC board, can to a great extent improve the fire resistance of PVC panel, form the porous ceramic structure who has self-supporting under flame, thereby guarantee that panel is not burnt through, the continuation that the residue of formation can the separation flame spreads, tolerate the lasting high temperature more than 1000 ℃, and certain mechanical strength has, can bear people's pressure and heavy object and drop, improve the safety in utilization of PVC panel, can be used to the fire prevention floor, prevent laying of hot wall etc..
Disclosure of Invention
In order to solve the problem that the traditional hard PVC plate is low in flame retardant and temperature resistant temperature, the invention provides the ceramic powder which is stable in performance and can be ceramic at a low temperature.
In order to solve the technical problems, the invention adopts the following technical scheme:
the ceramic powder comprises the following components in parts by mass:
the surface modifier is one or a mixture of any more of lignin coupling agent, borate coupling agent, silane coupling agent, aluminate coupling agent, stearic acid, alkyl quaternary ammonium salt and sodium alkyl benzene sulfonate according to a certain proportion;
the low-melting-point glass powder is self-made low-melting-point glass powder, and the self-made low-melting-point glass powder is prepared by the following method: weighing the following components in percentage by mass: 8-14% of Na2O，18～22％K2O，23～28％Al2O3，35～42％P2O5And 4-6% of CaO and SiO2A mixture of (a); mixing, placing into crucible, maintaining in electric furnace at 300 deg.C for 1 hr, heating to 1200 deg.C, maintaining for 2 hr to obtain molten glass, quenching to obtain granulesAnd (3) performing ball milling treatment on the granular glass at a speed of 250-400 r/min for 8-12 h, and sieving the glass with a 800-mesh sieve to obtain the self-made low-melting-point glass powder.
Preferably, the metakaolin has the particle size of 1250-1500 meshes and D505-10 μm; the granularity of the potassium/albite is 325-800 meshes, and D50Between 18 and 45 μm; the particle size of the zinc borate is 1500-2500 meshes, and D501-6 μm; the self-made low-melting-point glass powder has the granularity of 200-800 meshes and D50Between 18 and 60 μm.
Further, the surface modifier is a silane coupling agent.
Preferably, the CaO and SiO2According to the formula CaO and SiO2In a mass ratio of 1: 1.
Preferably, the ceramic powder consists of the following components in parts by mass:
further, weighing metakaolin, potassium/albite, self-made low-melting-point glass powder, zinc borate and gas-phase white carbon black according to the mass ratio, putting the metakaolin, the potassium/albite, the self-made low-melting-point glass powder, the zinc borate and the gas-phase white carbon black into an air-blowing drying oven for drying treatment at 105-120 ℃ for 2 hours, putting the dried powder into a high-speed stirrer for premixing at the temperature of 110 ℃ for 10min and the rotating speed of 600r/min, and then adding a surface modifier for fully mixing at 120 ℃ for 15min and at the rotating speed of 600r/min to obtain the ceramic powder.
The invention also provides the use of the ceramicizing powder as defined in claim 1 for the preparation of fire-resistant PVC sheets.
Specifically, the fire-resistant PVC plate is prepared by the following method: putting 150 parts of modified vitrified powder into a high-speed stirrer at the stirring speed of 500r/min, then sequentially adding 100 parts of PVC resin, 2 parts of paraffin, 3 parts of calcium-zinc stabilizer and 3 parts of impact modifier ACR, blending, moving the materials into a 40 ℃ stirrer for low-speed cold mixing at the speed of 50r/min when the temperature of the materials is stirred to 135-150 ℃, discharging when the materials are cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 160-180 ℃ for 10-15 min, and carrying out cold pressing at normal temperature for 5-10 min to obtain the fire-resistant PVC plate.
Preferably, after mixing, hot pressing at 170 ℃ for 10min, and cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the grain size effect of ceramic sintering, the granularity of the filler is refined, and meanwhile, the granularity among all the components is also homogenized, so that the effect of sintering into ceramic is obviously improved.
2. The self-made low-melting-point glass powder has the granularity of 200-800 meshes and D50The component is 18-60 μm and contains Na2O、K2O、Al2O3、P2O5、CaO、SiO2Equal effective component, glass transition temperature TgThe glass softening temperature is 450-550 ℃ at 430-500 ℃. By adding the self-made low-melting-point glass powder, the porcelain forming performance of the ceramic polyolefin at medium temperature and high temperature is improved, so that the strength of the ceramic powder and a PVC plate after porcelain forming is higher, cracks of a ceramic body formed by sintering are fewer, and the deformation is small.
3. The ceramic powder has stable property at normal temperature, can be hardened at about 600 ℃ when meeting high temperature, can quickly form ceramic at 900 ℃, has compact structure and high strength, and can be burnt for a long time (more than or equal to 30min) at the high temperature of 900 ℃ after being blended with PVC resin.
Drawings
FIG. 1 is a flow chart of the preparation of self-made low-melting-point glass powder, ceramic powder and fire-resistant PVC plate
FIG. 2 is an X-ray diffraction pattern of the self-made low melting point glass powder in example 1 at room temperature.
Detailed Description
The invention is further described with reference to the following detailed description of embodiments in conjunction with the accompanying drawings.
Example 1
Weighing 8g of Na according to the mass percentage2O、22gK2O、24gAl2O3、42gP2O5、2gCaO、2gSiO2. Fully mixing the weighed raw materials, putting the mixture into a crucible, putting the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1h, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2h, pouring molten glass liquid into cold water for quenching to obtain granular glass, carrying out ball milling treatment in a ball mill (the time is 12h, the rotating speed is 400r/min), and sieving with a 800-mesh sieve to obtain 98g of self-made low-melting-point glass powder.
Weighing 120g of metakaolin (Shanghai titanium industries, Inc., model TX801), 40g of albite (Lingshu county, model N-800), 30g of self-made low-melting-point glass powder (800 meshes), 80g of zinc borate (Jinnan Senno new material science and technology, Inc., model SN-303) and 20g of fumed silica (Changzhou city, Happy, commercial and trade, Inc., model ZQ356), drying in a forced air drying oven at 110 ℃ for 2h, premixing the dried powder in a high-speed mixer (at 110 ℃ for 10min and at 600r/min), mixing uniformly, adding 2g of silane coupling agent, and continuously mixing (at 120 ℃, 15min and 600r/min) to obtain 290g of porcelain powder 1.
Putting 150g of modified ceramic powder 1 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate A.
Example 2
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. Fully mixing the weighed raw materials, putting the mixture into a crucible, putting the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1 hour, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2 hours,and pouring the molten glass liquid into cold water for quenching to obtain flaky and granular glass, performing ball milling treatment in a ball mill (the time is 12 hours, the rotating speed is 400r/min), and sieving with an 800-mesh sieve to obtain 97g of self-made low-melting-point glass powder.
Weighing 120g of metakaolin, 40g of albite, 60g of self-made low-melting-point glass powder (800 meshes), 80g of zinc borate and 20g of fumed silica, putting the materials into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (the temperature of 110 ℃, the time of 10min and the rotating speed of 600r/min), adding 2g of silane coupling agent after the powder is uniformly mixed, and continuously mixing (the temperature of 120 ℃, the time of 15min and the rotating speed of 600r/min) to obtain 318g of vitrified powder 2.
Putting 150g of modified ceramic powder 2 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate B.
Example 3
Weighing 11gNa according to the mass percentage2O、20gK2O、28gAl2O3、35gP2O5、3gCaO、3gSiO2. Fully mixing the weighed raw materials, putting the mixture into a crucible, putting the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1h, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2h, pouring molten glass into cold water for quenching to obtain flaky and granular glass, carrying out ball milling treatment in a ball mill (the time is 12h, the rotating speed is 400r/min), and sieving with an 800-mesh sieve to obtain 98g of self-made low-melting-point glass powder.
Weighing 60g of metakaolin, 60g of albite, 60g of self-made low-melting-point glass powder (800 meshes), 100g of zinc borate and 20g of fumed silica, putting the materials into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (the temperature of 110 ℃, the time of 10min and the rotating speed of 600r/min), adding 1g of silane coupling agent after the powder is uniformly mixed, and continuing mixing (the temperature of 120 ℃, the time of 15min and the rotating speed of 600r/min) to prepare 298g of vitrified powder 3.
Putting 150g of modified ceramic powder 3 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate C.
Example 4
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. The weighed raw materials are fully mixed, the mixture is placed into a crucible, an electric furnace with the furnace temperature of 300 ℃ is placed, heat preservation is carried out for 1 hour, preheating treatment is carried out, then the temperature is raised to 1200 ℃, heat preservation is carried out for 2 hours, molten glass liquid is poured into cold water for quenching, flaky and granular glass is obtained, ball milling treatment is carried out in a ball mill (the time is 12 hours, the rotating speed is 400r/min), and the raw materials are sieved through a 800-mesh sieve, so that 97g of self-made low-melting-point glass powder is obtained.
Weighing 110g of metakaolin, 60g of potassium feldspar, 60g of self-made low-melting-point glass powder (800 meshes), 60g of zinc borate and 10g of fumed silica, putting the materials into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2 hours, then putting the dried powder into a high-speed stirrer for premixing (the temperature of 110 ℃, the time of 10 minutes and the rotating speed of 600r/min), adding 4g of silane coupling agent after the powder is uniformly mixed, and continuously mixing (the temperature of 120 ℃, the time of 15 minutes and the rotating speed of 600r/min) to obtain 299g of vitrified powder 4.
Putting 150g of modified ceramic powder 4 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate D.
Example 5
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. The weighed raw materials are fully mixed, the mixture is placed into a crucible, an electric furnace with the furnace temperature of 300 ℃ is placed, heat preservation is carried out for 1 hour, preheating treatment is carried out, then the temperature is raised to 1200 ℃, heat preservation is carried out for 2 hours, molten glass liquid is poured into cold water for quenching, flaky and granular glass is obtained, ball milling treatment is carried out in a ball mill (the time is 12 hours, the rotating speed is 400r/min), and the raw materials are sieved through a 800-mesh sieve, so that 97g of self-made low-melting-point glass powder is obtained.
Weighing 90g of metakaolin, 20g of albite, 60g of self-made low-melting-point glass powder (800 meshes), 100g of zinc borate and 30g of fumed silica, putting the materials into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (the temperature of 110 ℃, the time of 10min and the rotating speed of 600r/min), adding 4g of silane coupling agent after the powder is uniformly mixed, and continuously mixing (the temperature of 120 ℃, the time of 15min and the rotating speed of 600r/min) to obtain 300g of vitrified powder 5.
Putting 150g of modified ceramic powder 5 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate E.
Example 6
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. Fully mixing the weighed raw materials, putting the mixture into a crucible, putting the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1h, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2h, pouring molten glass into cold water for quenching to obtain flaky and granular glass, carrying out ball milling treatment in a ball mill (the time is 12h, the rotating speed is 400r/min), and sieving with an 800-mesh sieve to obtain 98g of self-made low-melting-point glass powder.
Weighing 90g of metakaolin, 20g of potassium feldspar, 60g of self-made low-melting-point glass powder (800 meshes), 100g of zinc borate and 30g of fumed silica, putting the materials into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2 hours, then putting the dried powder into a high-speed stirrer for premixing (the temperature of 110 ℃, the time of 10 minutes and the rotating speed of 600r/min), adding 4g of silane coupling agent after the powder is uniformly mixed, and continuing mixing (the temperature of 120 ℃, the time of 15 minutes and the rotating speed of 600r/min) to prepare 298g of vitrified powder 6.
Putting 150g of modified ceramic powder 6 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate F.
Comparative example 1
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. Fully mixing the weighed raw materials, placing the mixture into a crucible, placing the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1 hour, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2 hours, pouring molten glass into cold water for quenching to obtain flaky and granular glass, and cooling the flaky and granular glass in the furnaceBall milling treatment is carried out in a ball mill (the time is 12h, the rotating speed is 400r/min), and 97g of self-made low-melting-point glass powder is obtained after 200-mesh sieving.
Weighing 120g of common kaolin (sold in the market, 800 meshes), 40g of albite (sold in the market, 325 meshes), 60g of self-made low-melting-point glass powder (200 meshes), 80g of zinc borate and 20g of fumed silica, putting the materials into a forced air drying box for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (the temperature is 110 ℃, the time is 10min and the rotating speed is 600r/min), adding 2g of silane coupling agent after the powder is uniformly mixed, continuing mixing (the temperature is 120 ℃, the time is 15min and the rotating speed is 600r/min), and preparing 318g of porcelain powder 7.
Putting 150G of modified ceramic powder 7 into a high-speed stirrer, then sequentially adding 100G of PVC resin, 2G of paraffin, 3G of calcium-zinc stabilizer and 3G of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate G.
Comparative example 2
Weighing 120g of metakaolin, 40g of albite and 60g of low-melting-point glass powder (model: D250, particle size of 800 meshes), 80g of zinc borate and 20g of fumed silica on the market, putting the materials into a forced air drying box for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (the temperature is 110 ℃, the time is 10min and the rotating speed is 600r/min), adding 2g of silane coupling agent after the powder is uniformly mixed, and continuing mixing (the temperature is 120 ℃, the time is 15min and the rotating speed is 600r/min) to obtain 315g of vitrified powder 8.
Putting 150g of modified ceramic powder 8 into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the temperature of the materials is cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate H.
Comparative example 3
Weighing 14g of Na according to the mass percentage2O、18gK2O、23gAl2O3、39gP2O5、3gCaO、3gSiO2. Fully mixing the weighed raw materials, putting the mixture into a crucible, putting the crucible into an electric furnace with the furnace temperature of 300 ℃, preserving heat for 1h, carrying out preheating treatment, subsequently heating to 1200 ℃, preserving heat for 2h, pouring molten glass into cold water for quenching to obtain flaky and granular glass, carrying out ball milling treatment in a ball mill (the time is 12h, the rotating speed is 400r/min), and sieving with a 800-mesh sieve to obtain 96g of self-made low-melting-point glass powder.
Weighing 260g of superfine calcium carbonate (1250 meshes) and 60g of self-made glass powder (800 meshes), putting the superfine calcium carbonate and the self-made glass powder into a forced air drying oven for drying treatment at the temperature of 110 ℃ for 2h, then putting the dried powder into a high-speed stirrer for premixing (at the temperature of 110 ℃, the time of 10min and the rotating speed of 600r/min), adding 2g of silane coupling agent after the powder is uniformly mixed, and continuing mixing (at the temperature of 120 ℃, the time of 15min and the rotating speed of 600r/min) to prepare 319g of composite powder.
Putting 150g of modified composite powder into a high-speed stirrer, then sequentially adding 100g of PVC resin, 2g of paraffin, 3g of calcium-zinc stabilizer and 3g of impact modifier (ACR) for blending at a stirring speed of 500r/min, transferring the materials into a 40 ℃ stirrer for low-speed cold mixing when the temperature of the materials is stirred to 145 ℃, discharging when the materials are cooled to 40 ℃, putting the mixed materials into a double-roll plasticator for mixing, carrying out hot pressing at 170 ℃ for 10min, and carrying out cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate J.
The test results of the performance of the porcelain powder prepared in each example are shown in table 1, and the test results of the flame retardant panel prepared from the porcelain powder obtained in examples 1 to 8 are shown in table 2:
table 1: performance test results of the ceramic powder 1-8 prepared in the above embodiment
TABLE 2 results of performance testing of the composite A, B, C, D, E, F, G, H, J prepared in the above examples
As can be seen from tables 1 and 2, the particle sizes of different raw materials affect the sintering performance of the vitrified powder of the material, and the relative compactness and bending strength of the vitrified powder after being sintered at 600 ℃ and 900 ℃ are reduced along with the coarsening of the particle sizes of the components. After compounding with PVC, the flexural strength at 900 ℃ was reduced to 3MPa, and deep cracks appeared in the morphology (comparative example 1). Compared with the low-melting-point glass powder on the market, the self-made glass powder has better compactness and bending strength at 600 ℃, and the composite material has better appearance and small deformation after being calcined at 900 ℃ (comparative example 2). After calcium carbonate filling, the porcelain forming effect is poor, the composite material is seriously cracked by high-temperature decomposition of the components (above 800 ℃) (comparative example 3).
Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that the scope of the present invention is not limited to the above-described embodiments, and that various changes in form and details may be made therein within the scope of the appended claims.
Claims (8)
1. The ceramic powder is characterized by being prepared from the following components in parts by mass:
the surface modifier is one or a mixture of a plurality of lignin coupling agents, borate coupling agents, silane coupling agents, aluminate coupling agents, stearic acid, alkyl quaternary ammonium salts and sodium alkyl benzene sulfonate in any proportion;
the low-melting-point glass powder is self-made glass powder, and the self-made glass powder is prepared by the following method: weighing the following components in percentage by mass: 8-14% of Na2O，18～22％K2O，23～28％Al2O3，35～42％P2O5And 4-6% of CaO and SiO2A mixture of (a); fully mixing, putting into a crucible, preserving heat for 1h in an electric furnace at 300 ℃, then heating to 1200 ℃ and preserving heat for 2h to obtain molten glass liquid, quenching to obtain granular glass, performing ball milling treatment for 8-12 h at 250-400 r/min, and sieving with a 800-mesh sieve to obtain the low-melting-point glass powder;
the metakaolin has the granularity of 1250-1500 meshes, D505-10 μm; the granularity of the potassium/albite is 325-800 meshes, and D50Between 18 and 45 μm; the particle size of the zinc borate is 1500-2500 meshes, and D501-6 μm; the low-melting-point glass powder has the granularity of 200-800 meshes and D50Between 18 and 60 μm.
2. The ceramifying powder as claimed in claim 1, wherein the surface modifier is a silane coupling agent.
3. The ceramifying powder as claimed in claim 1 wherein the CaO and SiO are2According to the formula CaO and SiO2In a mass ratio of 1: 1.
4. The ceramifying powder according to claim 1 wherein the ceramifying powder consists of the following components in parts by mass:
5. the preparation method of the ceramic powder according to claim 1, wherein metakaolin, potassium/albite, self-made low-melting-point glass powder, zinc borate and fumed silica are weighed according to the mass ratio, the weighed materials are placed into a forced air drying oven for drying treatment at 105-120 ℃ for 2h, the dried powder is placed into a stirrer for premixing, the temperature is 110 ℃, the time is 10min, the rotating speed is 600r/min, and then a surface modifier is added for fully mixing for 15min at 120 ℃ and the rotating speed is 600r/min, so that the ceramic powder is obtained.
6. Use of the ceramifying powder of claim 1 for the preparation of fire-resistant PVC sheets.
7. Use according to claim 6, characterized in that: the fire-resistant PVC plate is prepared by the following method: putting 150 parts of the ceramic powder into a stirrer, stirring at 500r/min, sequentially adding 100 parts of PVC resin, 2 parts of paraffin, 3 parts of a calcium-zinc stabilizer and 3 parts of an impact modifier ACR, blending, moving the materials into a 40 ℃ stirrer for low-speed cold mixing at 50r/min when the temperature of the materials is stirred to 135-150 ℃, discharging when the materials are cooled to 40 ℃ to obtain a mixture, putting the mixture into a double-roll plasticator for mixing, molding, performing hot pressing at 160-180 ℃ for 10-15 min after molding, and performing cold pressing at normal temperature for 5-10 min to obtain the fire-resistant PVC plate.
8. Use according to claim 7, characterized in that: and after molding, hot pressing at 170 ℃ for 10min, and cold pressing at normal temperature for 5min to obtain the fire-resistant PVC plate.
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| CN105968551A (en) * | 2016-06-02 | 2016-09-28 | 沈阳化工大学 | Vitrified powder |
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| KR20050031104A (en) * | 2005-03-12 | 2005-04-01 | 박창규 | A dividing equipment of waste aggregate for reuse |
| CN105968551A (en) * | 2016-06-02 | 2016-09-28 | 沈阳化工大学 | Vitrified powder |
| CN106630618A (en) * | 2016-12-21 | 2017-05-10 | 蚌埠玻璃工业设计研究院 | Anti-radiation high-elasticity glass substrate with low melting point |
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Effective date of registration: 20221129 Address after: 314500 Floor 6, Building 2, No. 258, Hangfu Road, Chongfu Town, Tongxiang City, Jiaxing City, Zhejiang Province Patentee after: Tongxiang Jiao New Material Technology Co.,Ltd. Address before: 310014 No. 18 Chao Wang Road, Xiacheng District, Zhejiang, Hangzhou Patentee before: JIANG University OF TECHNOLOGY |