Manufacturing method of ultra-low thermal expansion coefficient honeycomb ceramics
A technology of honeycomb ceramics and expansion coefficient, which is applied in the direction of ceramic products, applications, household appliances, etc., can solve the problems of reducing the strength of ceramic carriers, insufficient thermal shock resistance of honeycomb ceramic carriers, and limited thermal shock resistance, and achieves significant social and economic benefits. Benefits, low thermal expansion coefficient, and improved thermal shock resistance
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Example Embodiment
[0034] Example 1:
[0035] According to the raw material ratio of 2MgO-2Al for the production of low-expansion cordierite honeycomb ceramics 2 O 3 ―5SiO 2 Weigh the ingredients, and then add the special raw material CTTL produced by Gaochun Ceramics (CTTL is any one of CTTL-1, CTTL-2, CTTL-3, CTTL-4), and the amount of CTTL added is "production of low expansion cordierite". Honeycomb ceramic raw materials" 5wt% of the total. Then add 0.5wt% plasticizer (cellulose ether) and 10.0wt% lubricant (tung oil) and mix them evenly into the molding machine for extrusion molding. Drying at 800°C and firing at 1400°C can obtain a thermal expansion coefficient of 0.8×10 -6 °C -1 The honeycomb ceramic, so that the thermal shock resistance of the honeycomb ceramic product reaches 650 ℃.
Example Embodiment
[0036] Example 2:
[0037]Weigh the ingredients according to the raw material ratio for producing low-expansion cordierite honeycomb ceramics, and then add the special raw material CTTL produced by Gaochun Ceramics (CTTL is CTTL-5, CTTL-6, CTTL-7, CTTL-8, CTTL-9, CTTL -10), the added amount of CTTL is 10 wt% of the total amount of "raw materials for the production of low-expansion cordierite honeycomb ceramics". Then add plasticizer and lubricant and mix them evenly into the molding machine for extrusion molding. Drying at 800°C and firing at 1400°C can obtain a thermal expansion coefficient of 0.6×10 -6 °C -1 The honeycomb ceramics make the thermal shock resistance of the honeycomb ceramic products reach 800 ℃.
Example Embodiment
[0038] Example 3:
[0039] Weigh the ingredients according to the raw material ratio for the production of low-expansion cordierite honeycomb ceramics, and then add the special raw material CTTL produced by Gaochun Ceramics (CTTL is any one of CTTL-1, CTTL-2, CTTL-3, CTTL-4) , the addition amount of CTTL is 15wt% of the total amount of "raw materials for producing low-expansion cordierite honeycomb ceramics". Then add plasticizer and lubricant and mix them evenly into the molding machine for extrusion molding. Drying at 800°C and firing at 1420°C can obtain a thermal expansion coefficient of 0.4×10 -6 °C -1 The honeycomb ceramics make the thermal shock resistance of the honeycomb ceramic products reach 900 ℃.
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