Ceramic hand mold for production of nitrile rubber and pvc gloves and preparation method thereof
A technology of nitrile rubber and gloves, applied in the field of ceramic hand molds and their preparation, can solve the problems of high shrinkage rate, weak thermal shock resistance, low production qualification rate, etc. The effect of long life and improved product qualification rate
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Embodiment 1
[0045] (1) Ingredients according to the following formula: raw material formula: 6% of quartz, 12% of feldspar, 45% of cooked Datong soil, 4% of Fangzi soil, 2% of Suzhou soil, 10% of cooked bauxite, 8% of cooked talc, α -Al 2 o 3 13%, send the prepared material into the ball mill and add water to grind for 38 hours to make mud;
[0046] (2) The mud obtained in step (1) is passed through a 300-mesh vibrating screen, so that the fineness of the mud is 300 mesh, and the sieve allowance is 0.01%, and then put into the mud filter through the permanent magnetic iron remover, and used in the mud filter Industrial filter cloth separates mud cake;
[0047] (3) add and account for the water stirring of 40% of raw material formula gross weight in step (2) gained mud cake, and add respectively account for soda ash and water glass of raw material formula gross weight 0.3%, beat into mud, the specific gravity of mud is 1.7g / cm 3 , and then after the second iron removal treatment, the ...
Embodiment 2
[0052] Preparation method is identical with embodiment 1, and difference is raw material formula:
[0053] Quartz 8%, feldspar 15%, cooked Datong soil 32%, Fangzi soil 16%, Suzhou soil 3%, cooked bauxite 14%, cooked talc 2%, α-Al 2 o 3 10%.
[0054] The chemical composition weight content of the finished ceramic hand mold is: SiO 2 44.25%, Al 2 o 3 47.45%, Fe 2 o 3 0.27%, Fe 2 o 3 0.25%, TiO 2 0.41%, CaO 0.44%, MgO 0.48%, K 2 O 3.85%, Na 2 O1.60%, loss on ignition 1.00%. The total shrinkage of the hand mold was 13%.
Embodiment 3
[0056] Preparation method is identical with embodiment 1, and difference is raw material formula:
[0057] Quartz 6%, feldspar 12%, cooked Datong soil 32%, Fangzi soil 4%, Suzhou soil 2%, cooked bauxite 10%, cooked talc 4%, α-Al 2 o 3 30%.
[0058] The chemical composition weight content of the finished ceramic hand mold is: SiO 2 31.20%, Al 2 o 3 58.30%, Fe 2 o 3 0.37%, TiO 2 0.25%, CaO 0.34%, MgO 0.52%, K 2 O 2.58%, Na 2 O 1.57%, loss on ignition 4.87%. The total shrinkage of the hand mold was 12%.
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