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Gypsum die manufacturing method and method for utilizing gypsum die manufacturing method for manufacturing fusion quartz ceramic antenna cover

A gypsum mold and manufacturing method technology, which is applied in the direction of die-casting molds, manufacturing tools, ceramic molding machines, etc., can solve the problem of low grouting pressure of only 0.1-0.3MPa, etc., achieve non-polluting raw material sources, and accelerate grouting The effect of improving molding speed and density

Inactive Publication Date: 2020-02-28
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength of plaster mold is low, and its grouting pressure is only 0.1-0.3MPa

Method used

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  • Gypsum die manufacturing method and method for utilizing gypsum die manufacturing method for manufacturing fusion quartz ceramic antenna cover
  • Gypsum die manufacturing method and method for utilizing gypsum die manufacturing method for manufacturing fusion quartz ceramic antenna cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] S1. Preparation of nanocellulose: Add cotton linters and 2wt% sulfuric acid aqueous solution into the ball mill tank, add large, medium and small grinding balls, the diameters of the large, medium and small grinding balls are 30mm, 20mm, and 10mm respectively, and set the ball mill speed to 300rpm After ball milling for 4 hours, the dispersion 1 was obtained after being washed with distilled water for 5 times; the mass ratio of cotton linters and aqueous solution was 1:2000, the ratio of balls to materials was 1.3:1, and the ratio of large, medium and small balls was 1:2:1.5; Liquid 1 was placed in a beaker, the ultrasonic probe was placed in the beaker 1.5 cm below the liquid surface, the ultrasonic power was set to 300 W, and the nanocellulose dispersion 2 was obtained by ultrasonication for 30 minutes.

[0059] S2, preparation of gypsum mold: add gypsum powder and nano-cellulose dispersion 2 into the mixing tank, the mass ratio of nano-cellulose dispersion 2 and gypsu...

Embodiment 2

[0063] S1, the preparation of nanocellulose: add absorbent cotton and 2wt% sulfuric acid aqueous solution in the ball mill tank, add large, medium and small grinding balls, the diameters of the large, medium and small grinding balls are respectively 30mm, 20mm, 10mm, set the ball mill speed to 500rpm, ball mill Dispersion 1 was obtained after 4 hours of washing with distilled water for 5 times. Among them, the mass ratio of absorbent cotton and aqueous solution is 1:1000, the ratio of balls to materials is 1.5:1, and the ratio of large, medium and small balls is 1:2.5:1; put the dispersion 1 in a beaker, and place the ultrasonic probe under the liquid surface in the beaker 1.5cm, set the ultrasonic power to 900W, and ultrasonically for 40min to obtain nanocellulose dispersion 2. The morphology of the prepared nanocellulose is shown in figure 1 .

[0064] S2, preparation of gypsum mold: add gypsum powder and nanocellulose dispersion 2 in the mixing tank, the mass ratio of nan...

Embodiment 3

[0068] S1, the preparation of nanocellulose: add absorbent cotton and 2wt% sulfuric acid aqueous solution in the ball mill tank, add large, medium and small grinding balls, the diameters of the large, medium and small grinding balls are respectively 30mm, 20mm, 10mm, set the ball mill speed to 400rpm, ball mill Dispersion 1 was obtained after 5 hours of washing with distilled water. Among them, the mass ratio of absorbent cotton and aqueous solution is 2:1500, the ratio of balls to materials is 2:1, and the ratio of large, medium and small balls is 1:3:2; put the dispersion 1 in a beaker, and place the ultrasonic probe under the liquid surface in the beaker 1.5cm, set the ultrasonic power to 600W, and ultrasonically for 40min to obtain nanocellulose dispersion 2.

[0069] S2, preparation of gypsum mould: add gypsum powder and nanocellulose dispersion 2 into the mixing tank, the mass ratio of nanocellulose dispersion 2 and gypsum powder is 1:1, stir for 5min and then pour into ...

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Abstract

The invention relates to a gypsum die manufacturing method and a method for utilizing the gypsum die manufacturing method for manufacturing a fusion quartz ceramic antenna cover. The method comprisesthe following steps that firstly, nano cellulose is prepared through ball milling, fiber raw materials and a solvent are subjected to ball milling after being mixed, and suspension liquid containing the nano cellulose with the size being 20-100 nm is obtained; secondly, dispersion is conducted, the nano cellulose suspension liquid obtained in the first step is subjected to ultrasonic dispersion, and dispersion liquid is obtained; and thirdly, curing forming is conducted, the dispersion liquid obtained in the second step is mixed with gypsum powder, the mixture is poured into a die, curing anddrying are conducted, and a gypsum die is obtained. The provided gypsum die can bear higher grouting pressure, and therefore the grouting forming speed is increased, and the work efficiency is improved; and under the higher grouting pressure, the density of a fusion quartz ceramic blank can be improved, and accordingly a quartz ceramic finished product with higher density and bending strength is obtained.

Description

technical field [0001] The invention relates to the technical field of fused silica ceramic radome, in particular to a method for manufacturing a gypsum mold and a method for making a fused silica ceramic radome by using the same. Background technique [0002] At present, the grouting method is widely used in the production of fused silica ceramic radomes. Because gypsum has good water absorption and mold release properties, it can prepare ceramic bodies according to the needs, so gypsum is usually used as the grouting molding mold. The production of traditional gypsum molds is to disperse gypsum powder into water to obtain gypsum slurry, inject it into molds, dry and solidify to obtain gypsum molds. During the grouting process, after the fused silica slurry is added to the gypsum mold, the moisture in the slurry is discharged through the capillary action of the capillary pores of the gypsum, so that the fused silica particles are precipitated and formed along the gypsum wal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B1/26B28B1/52B28B7/34B28B17/02H01Q1/42
CPCB28B1/264B28B1/525B28B7/344B28B7/346B28B17/023H01Q1/42
Inventor 慈吉良王涛吕毅张天翔赵英民
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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