A kind of synthetic method of geopolymer
A technology of geopolymer and synthesis method, which is applied in the field of synthesis of inorganic polymeric materials, can solve the problems of high cost, pollute the environment, waste resources, etc., and achieve the effects of excellent quality, environmental protection and easy operation.
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Embodiment 1
[0021] Put 2000g of kaolin into a muffle furnace, heat it to 400°C and keep it for 2 hours, and get metakaolin after cooling. Weigh 1000g of metakaolin, add 700g of invalid phosphoric acid-based polishing solution containing 65% phosphoric acid, 12% sulfuric acid, 2% nitric acid and 15g of deionized water, stir well and pour into the mold, keep the temperature at 30°C for reaction, the reaction time After 6 days, the demoulding was carried out after the reaction. At this time, the compressive strength was measured to be about 20MPa. The demoulded material was placed in a sealed bag at room temperature, taken out after 28 days, and measured again. The material is a high-strength synthetic geopolymer material with a compressive strength of 49MPa. Example 2
Embodiment 2
[0022] Put 2500g of kaolin into a muffle furnace, heat it to 650°C and keep it for 1.5h, and obtain metakaolin after cooling. Weigh 1200g of metakaolin, add 870g of invalid phosphoric acid-based polishing solution containing 75% phosphoric acid, 8% sulfuric acid, 5% nitric acid and 27g of deionized water, stir well and pour into the mold, keep the temperature at 55°C for reaction, the reaction time After 4 days, the demoulding was carried out after the reaction. At this time, the compressive strength was measured to be about 25MPa. The material after demoulding was placed in a sealed bag at room temperature, taken out after 35 days, and measured again. The material is a high-strength synthetic geopolymer material with a compressive strength of 51MPa. Example 3
Embodiment 3
[0023] Put 2000g of kaolin into a muffle furnace, heat it to 800°C and keep it for 1 hour, and obtain metakaolin after cooling. Weigh 1000g of metakaolin, add 700g of invalid phosphoric acid-based polishing solution containing 70% phosphoric acid, 10% sulfuric acid, 3% nitric acid, and 20g of deionized water, stir evenly, inject into the mold, and keep the temperature at 60°C for reaction. The time is 5 days. After the reaction is finished, the demoulding is carried out. At this time, the compressive strength is measured to be about 24MPa. The material after demoulding is placed in a sealed bag and placed in a room temperature environment. After 30 days, it is taken out, and the obtained geological composition is measured again. The polymer is a high-strength synthetic geopolymer material with a compressive strength of 55MPa. Example 4
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