Box type foam glass/glass-ceramic composite material capable of being nailed and preparation method thereof
A technology of foam glass and composite materials, applied in the direction of building materials, etc., can solve the problems of low overall strength, short service life, moisture absorption, etc., and achieve the effect of eliminating the demoulding process, reducing the annealing time, and being convenient to use
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Embodiment 1
[0036] Prepare box-type cellular glass / glass-ceramic composite brick, the method is as follows:
[0037] 1. Use a ball mill to grind the alkali-free waste glass fiber, limestone powder and boric acid respectively, pass through a 200-mesh sieve, and set aside;
[0038] 2. Then stack the waste glass fiber powder evenly on the mullite refractory board, brush a layer of alumina slurry evenly, after drying, stack a layer of waste glass fiber powder on the refractory board, compact it, and put it on the Sintering at 1050°C to form a dense glass-ceramic plate with a thickness of 5-10mm;
[0039] 3. Take a glass-ceramic plate as the bottom plate, slot around it, place four glass-ceramic plates in the groove, and use water and glass powder or water glass to bond to form a glass-ceramic box with an opening at the top. The box body is heated to 1050°C for 30 minutes, so that the contact parts of the glass-ceramic plates are fused together to form a firm open box mold, such as figure 2...
Embodiment 2
[0045] Prepare box-type cellular glass / glass-ceramic composite brick, the method is as follows:
[0046] 1. Use a ball mill to grind the alkali-free waste glass fiber, limestone powder and boric acid respectively, pass through a 200-mesh sieve, and set aside;
[0047]2. Then stack the waste glass fiber powder evenly on the mullite refractory board, brush a layer of alumina slurry evenly, after drying, stack a layer of waste glass fiber powder on the refractory board, compact it, and put it on the Sintering at 1050°C to form a dense glass-ceramic plate with a thickness of 5-10mm;
[0048] 3. Take a glass-ceramic plate as the bottom plate, slot around it, place four glass-ceramic plates in the groove, and use water and glass powder or water glass to bond to form a glass-ceramic box with an opening at the top. Heat the box body to 1050°C and keep it warm for 30 minutes, so that the contact parts of the glass-ceramic plates are fused together to form a firm open box mold;
[004...
Embodiment 3
[0054] Prepare box-type cellular glass / glass-ceramic composite brick, the method is as follows:
[0055] 1, according to the method for embodiment 1, make open box mold;
[0056] 2. Take out the mold at high temperature, put 24.72g of alkali-free glass fiber powder, 3.71g of boric acid and 3.71g of limestone powder into the mold, and the amount of foam glass batching materials should not exceed half of the mold to ensure the resulting foam The glass will not protrude beyond the glass-ceramic box;
[0057] 3. Heat the mold together with the foam glass batch material at 1050°C for 15-60 minutes to foam, then cool down to 650°C for 3 hours after foaming, and then anneal. After annealing, cool the sample to room temperature with the furnace to obtain the box Foam glass / glass-ceramic composite bricks.
[0058] The bulk density and porosity of foam glass in the composite brick products obtained at different foaming times are shown in Table 3 below.
[0059]
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