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High melt polymeric material manufacturing process

A polymer material and production process technology, applied in the direction of titanium compounds, aluminum compounds, inorganic chemistry, etc., can solve the problems of easy decomposition, poor thermal stability, quality discount, etc., and achieve low thermal expansion coefficient, good thermal shock resistance, and bending resistance high intensity effect

Inactive Publication Date: 2008-07-16
QINGHE REFRACTORY MATERIAL GROUP HEBEI PROV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two major disadvantages of aluminum titanate: first, the thermal expansion coefficient of its crystals in the three-axis direction is very different, which makes it easy to produce microcracks during the cooling process, and the difficulty of sintering leads to a decrease in mechanical strength and different degrees of damage, which affects its quality. Great discount and increased risk of hidden dangers; second, it is easy to decompose in the range of medium and low temperature (700-1280°C), that is, its thermal stability is poor
This shortcoming limits its application in non-ferrous metals and wider industries

Method used

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  • High melt polymeric material manufacturing process
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Experimental program
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Effect test

Embodiment 1

[0037] The present invention adopts the following components in parts by weight: rutile 2.5, quartz 5, sepiolite 15, calcium oxide 2, titanium dioxide 40, aluminum oxide 38-61, wherein aluminum oxide is added twice, the first time Add 33 to 51 parts by weight, and add 5 to 10 parts by weight for the second time, wherein the particle size of aluminum oxide is 0.5 μm, the particle size of rutile is 0.8 μm, and the particle size of sepiolite is 1 μm;

[0038] Grinding, three calcining and two processes are adopted, that is, ball milling → calcining → ball milling → calcining → ball milling:

[0039] Firstly carry out the first calcination: mix the four raw materials of aluminum oxide, quartz, titanium dioxide and calcium oxide, the molar ratio of aluminum oxide and titanium dioxide is 1:1, grind the mixed material in a ball mill for 14 hours, The volume ratio of balls, materials and water is 4:2:1, and the total volume does not exceed 1 / 2 of the effective volume of the ball mill....

Embodiment 2

[0044] The following parts by weight are used: rutile 7, quartz 10, sepiolite 5, calcium oxide 6, titanium dioxide 26, aluminum oxide 38-61, wherein aluminum oxide is added in two times, and the first time 33 ~51 parts by weight, adding 5~10 parts by weight for the second time, wherein the particle size of aluminum oxide is 1 μm, the particle size of rutile is 0.5 μm, and the particle size of sepiolite is 0.5 μm;

[0045] Grinding, three calcining and two processes are adopted, that is, ball milling → calcining → ball milling → calcining → ball milling:

[0046] Firstly carry out the first calcination: mix the four raw materials of aluminum oxide, quartz, titanium dioxide and calcium oxide, the molar ratio of aluminum oxide and titanium dioxide is 1:1, grind the mixed material in a ball mill for 18 hours, The volume ratio of balls, materials and water is 4:2:1, and the total volume does not exceed 1 / 2 of the effective volume of the ball mill. After grinding, put them into a dr...

Embodiment 3

[0051] The following parts by weight are used: rutile 5, quartz 8, sepiolite 10, calcium oxide 4, titanium dioxide 35, aluminum oxide 38-61, wherein aluminum oxide is added in two times, and the first time 33 ~51 parts by weight, adding 5~10 parts by weight for the second time, wherein the particle size of aluminum oxide is 0.8 μm, the particle size of rutile is 1 μm, and the particle size of sepiolite is 0.8 μm;

[0052] Grinding, three calcining and two processes are adopted, that is, ball milling → calcining → ball milling → calcining → ball milling:

[0053] Firstly carry out the first calcination: mix the four raw materials of aluminum oxide, quartz, titanium dioxide and calcium oxide, the molar ratio of aluminum oxide and quartz is 1:1, grind the mixed material in a ball mill for 16 hours, The volume ratio of balls, materials and water is 4:2:1, and the total volume does not exceed 1 / 2 of the effective volume of the ball mill. After grinding, put it into a dryer for dryi...

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Abstract

The invention relates to a preparation technique for high-melting-point polymeric material. Wherein, selecting material by weight share as: 2. 5~7 rutile, 5~10 SiO2, 5~15 4MgO.6SiO2.2H2O, 2~6 CaO, 26~40 TiO2, and 38~61 Al2O3; in the first calcination, mixing the Al2O3, SiO2, TiO2 and CaO to grind and dry to let the water content less than 1%, calcinating at 1350~1400Deg and holding for 4~6h; in the second calcination, adding other materials into the first sintered body to grind and dry let the water content less than 1%, heating to 1550~1580Deg and calcinating for 3~7h. This product has well properties.

Description

technical field [0001] The invention relates to a production process of an inorganic non-metallic material, in particular to a production process of a high-melt polymer material. technical background [0002] Scientists from various countries have conducted research on aluminum titanate in different depths and breadths, but they have focused on research on aluminum titanate itself or adding a small amount of additives to improve certain properties of the sintered body. Most of the results obtained are While certain properties are improved, such as increased strength, other beneficial properties are reduced, such as low expansion, thermal shock resistance, etc. [0003] Aluminum titanate has the advantages of slag resistance, corrosion resistance, alkali resistance and non-wetting with copper, aluminum and other non-ferrous metal melts and glass melts. There are two major disadvantages of aluminum titanate: first, the thermal expansion coefficient of its crystals in the thre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/00C01F7/00
Inventor 王洪增
Owner QINGHE REFRACTORY MATERIAL GROUP HEBEI PROV