Low-cost SiZrOC ceramic material and preparation method thereof
A ceramic material, low-cost technology, applied in the field of high-temperature structural ceramics, can solve problems such as poor thermal stability, and achieve the effects of low price, simple preparation method and convenient operation
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Embodiment 1
[0025] A preparation method of low-cost SiZrOC ceramic material, comprising the following steps:
[0026] 1) Preparation of zirconium sol:
[0027] Under constant temperature conditions of 40°C, take 4g ZrOCl 2 ·8H 2 O was dissolved in 20g ethanol, and magnetically stirred for 20min after adding 5g acetylacetone therein, to obtain zirconium sol;
[0028] Take 50g of MK silicone resin and dissolve it in 50g of ethanol to prepare a 50% MK silicone resin ethanol solution;
[0029] 2) Preparation of gel: Mix the prepared MK silicone resin ethanol solution and zirconium sol, add 2.7g of polyethylene glycol, and let it stand for 6 hours to form a gel;
[0030] 3) Preparing the precursor: heating the obtained gel to 150° C. in a drying oven, and drying for 10 hours to obtain a zirconium-modified polysiloxane precursor;
[0031] 4) Preparation of SiZrOC ceramic material: The obtained zirconium-modified polysiloxane precursor was placed in an inert gas atmosphere at 1000° C. for cr...
Embodiment 2
[0034] A preparation method of low-cost SiZrOC ceramic material, comprising the following steps:
[0035] 1) Preparation of zirconium sol:
[0036] Under constant temperature conditions of 50°C, take 10g ZrOCl 2 ·8H 2 O was dissolved in 35g of ethanol, and magnetically stirred for 15min after adding 6.2g of acetylacetone therein, to obtain a zirconium sol;
[0037] Take 30g of MK silicone resin and dissolve it in 70g of ethanol to prepare a 30% MK silicone resin ethanol solution;
[0038] 2) Gel preparation: the prepared MK silicone resin ethanol solution was mixed with zirconium sol, 4g of polyethylene glycol was added, and after standing for 9 hours, a gel was formed;
[0039] 3) Preparing the precursor: heating the obtained gel to 200° C. in air, and drying for 4 hours to obtain a zirconium-modified polysiloxane precursor;
[0040] 4) Preparation of SiZrOC ceramic material: The obtained zirconium-modified polysiloxane precursor was placed in a high-temperature inert gas...
Embodiment 3
[0043] A preparation method of low-cost SiZrOC ceramic material, comprising the following steps:
[0044] 1) Preparation of zirconium sol:
[0045]Under constant temperature conditions of 45°C, take 30g ZrOCl 2 ·8H 2 O was dissolved in 60g of ethanol, and magnetically stirred for 10min after adding 9.3g of acetylacetone therein to obtain a zirconium sol; 40g of MK silicone resin was dissolved in 60g of ethanol to prepare a 40% MK silicone resin ethanol solution;
[0046] 2) Gel preparation: the prepared MK silicone resin ethanol solution was mixed with zirconium sol, 12 g of polyethylene glycol was added thereto, and after standing for 28 hours, a gel was formed;
[0047] 3) Preparing the precursor: heating the obtained gel to 220° C. in air, and drying for 6 hours to obtain a zirconium-modified polysiloxane precursor;
[0048] 4) Preparation of SiZrOC ceramic material: The obtained zirconium-modified polysiloxane precursor was placed in a high-temperature inert gas atmosph...
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