CN102745990A - Graphite powder for high-temperature material and preparation method of graphite powder - Google Patents
Graphite powder for high-temperature material and preparation method of graphite powder Download PDFInfo
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- CN102745990A CN102745990A CN2012102602340A CN201210260234A CN102745990A CN 102745990 A CN102745990 A CN 102745990A CN 2012102602340 A CN2012102602340 A CN 2012102602340A CN 201210260234 A CN201210260234 A CN 201210260234A CN 102745990 A CN102745990 A CN 102745990A
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Abstract
The invention relates to graphite powder for a high-temperature material and a preparation method of the graphite powder. According to the technical scheme, the preparation method comprises the following steps of: stirring and mixing 70-98 percent by weight of graphite powder and 2-30 percent by weight of silicon-containing substance for 2 to 10 minutes, and naturally drying for 24 hours; performing heat treatment for 5 to 24 hours at temperature of 110 to 300 DEG C; naturally cooling; and thus obtaining the graphite powder for the high-temperature material. The grain size of the graphite powder is between 3 and 500 micrometers, carbon content in the graphite powder is more than or equal to 90 weight percent, the silicon-containing substance is a mixture of silicon resin, or silicone oil, or silicon resin and silicone oil, wherein the mole ratio of R to Si in the silicon resin is 1: (1.0-2.0), the loss on drying of the silicone oil is less than or equal to 2.0 percent, and the density of the silicone oil is between 0.90 and 0.98g/cm<3>. The preparation method is simple, the prepared graphite powder has excellent high-temperature mechanical property, oxidation resistance and thermal shock resistance, and the requirements of production and application of the high-temperature material on graphite can be met.
Description
Technical field
The invention belongs to Graphite Powder 99 body technique field.Relate in particular to a kind of high-temperature material with graphite powder and preparation method thereof.
Background technology
The carbon composite refractory has become Iron And Steel Industry with important refractory materials, and it is that wedding agent is processed by different refractory mineral raw materials and graphite and resin.Because graphite is wetting high with thermal conductivity by slag, thereby carbon composite has good slag resistance and thermal shock resistance, is widely used in the liner of metallurgical furnace and container.Since the later stage in last century, the increasing substantially of refractory materials work-ing life, the carbon composite refractory has played vital role.
Yet in use, the graphite in the carbon composite is prone to oxidized, thereby makes material become loose, causes the carbon composite performance decrease.In order to address this problem, the scientific worker has introduced inhibitor in the carbon composite refractory, like metallic aluminium and elemental silicon or the like.Though add the resistance of oxidation that inhibitor has improved carbon composite to a certain extent, reduced the oxidized speed of graphite; Inhibitor at high temperature can react with raw mineral materials in the carbon composite refractory such as magnesia etc.; Especially under some special environments for use such as vacuum condition, correlated response is more violent, has destroyed the structure of material thus; Cause the performance of material sharply to reduce, can't satisfy the needs of smelting.
Summary of the invention
The present invention is intended to overcome the prior art deficiency; Purpose provides the simple high-temperature material of a kind of preparation technology with graphite and preparation method thereof, has mechanical behavior under high temperature, antioxidant property, thermal shock resistance ability and the anti-scour property of excellence with the graphite powder body material with the high-temperature material of this method preparation.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is: the Graphite Powder 99 of 70 ~ 98wt% and the silicon-containing material of 2 ~ 30wt% were mixed 2 ~ 10 minutes seasoning 24 hours earlier; Thermal treatment 5 ~ 24 hours under 110 ~ 300 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
In technique scheme: the particle diameter of said Graphite Powder 99 is 3 ~ 500 μ m, the carbon content>=90wt% in the Graphite Powder 99; Said silicon-containing material is silicone resin or is the mixture of silicone oil or silicone resin and silicone oil that wherein: R in the silicone resin and the mol ratio of Si are 1: (1.0 ~ 2.0); The weight loss on drying of silicone oil≤2.0%, the density of silicone oil are 0.90 ~ 0.98g/cm
3
Owing to adopt technique scheme; The present invention carries out subzero treatment to premixed starting material; Silicone oil or silicone resin are wetting good between normal temperature and Graphite Powder 99 in the starting material, can be wrapped in the Graphite Powder 99 surface, and the Graphite Powder 99 surface after the subzero treatment forms the organism protective membrane.The prepared graphite powder body material of the present invention is in the temperature-rise period that high temperature uses; Because due to Graphite Powder 99 and silicone oil or the silicone resin reaction; Its surface can form the silit protective membrane; After temperature further raise, the silit protective membrane changed silicon dioxide protective film into, thereby played the not oxidized purpose of protection graphite.
The present invention adopts pre-mixing and subzero treatment technology, and prepared graphite powder body material has excellent mechanical behavior under high temperature, antioxidant property, thermal shock resistance ability and anti-scour property.This graphite powder body material will have broad application prospects in the preparation of hot industry with material, such as preparing required graphite raw material as metallurgical industry with carbon composite.
Preparation technology of the present invention is simple, and prepared graphite powder has excellent mechanical behavior under high temperature, antioxidant property, thermal shock resistance ability and anti-scour property, can satisfy high-temperature material production and use the requirement to graphite.
Embodiment
Below in conjunction with embodiment the present invention being done further description, is not the restriction to its protection domain.
For avoiding repetition, the existing raw material technical parameter unification that this embodiment is related is described below, and repeats no more among the embodiment:
The particle diameter of said Graphite Powder 99 is 3 ~ 500 μ m, the carbon content >=90wt% in the Graphite Powder 99.
Said silicon-containing material is silicone resin or is the mixture of silicone oil or silicone resin and silicone oil that wherein: R in the silicone resin and the mol ratio of Si are 1: (1.0 ~ 2.0); The weight loss on drying of silicone oil≤2.0%, the density of silicone oil are 0.90 ~ 0.98g/cm
3
Embodiment 1
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 70 ~ 80wt% and the silicone resin of 20 ~ 30wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 5 ~ 10 hours under 110 ~ 150 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 2
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 80 ~ 90wt% and the silicone resin of 10 ~ 20wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 10 ~ 15 hours under 150 ~ 200 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 3
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 90 ~ 98wt% and the silicone resin of 2 ~ 10wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 15 ~ 24 hours under 200 ~ 300 ℃ of conditions again, naturally cooling promptly obtains the graphite powder on organism parcel surface.
Embodiment 4
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 70 ~ 80wt% and the silicone oil of 20 ~ 30wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 5 ~ 10 hours under 110 ~ 150 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 5
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 80 ~ 90wt% and the silicone oil of 10 ~ 20wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 10 ~ 15 hours under 150 ~ 200 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 6
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 90 ~ 98wt% and the silicone oil of 2 ~ 10wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 15 ~ 24 hours under 200 ~ 300 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 7
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 70 ~ 80wt%, silicone oil and the 10 ~ 15wt% silicone resin of 10 ~ 15wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 5 ~ 10 hours under 110 ~ 150 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 8
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 80 ~ 90wt%, silicone oil and the 5 ~ 10wt% silicone resin of 5 ~ 10wt% were mixed seasoning 24 hours 2 ~ 10 minutes; Thermal treatment 10 ~ 15 hours under 150 ~ 200 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
Embodiment 9
A kind of high-temperature material is with graphite powder and preparation method thereof.Earlier the Graphite Powder 99 of 90 ~ 98wt%, silicone oil and the 1 ~ 5wt% silicone resin of 1 ~ 5wt% are mixed, mixing time is 2 ~ 10 minutes, seasoning 24 hours; Thermal treatment 15 ~ 24 hours under 200 ~ 300 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
This embodiment is carried out subzero treatment to premixed starting material, and silicone oil or silicone resin are wetting good between normal temperature and Graphite Powder 99 in the starting material, can be wrapped in graphite surface, and the Graphite Powder 99 surface after the subzero treatment forms the organism protective membrane.The prepared graphite powder body material of the present invention is in the temperature-rise period that high temperature uses; Because due to Graphite Powder 99 and silicone oil or the silicone resin reaction; Its surface can form the silit protective membrane; After temperature further raise, the silit protective membrane changed silicon dioxide protective film into, thereby played the not oxidized purpose of protection graphite.
This embodiment adopts pre-mixing and subzero treatment technology, and prepared graphite powder body material has excellent mechanical behavior under high temperature, antioxidant property, thermal shock resistance ability and anti-scour property.This graphite powder body material will have broad application prospects in the preparation of hot industry with material, such as preparing required graphite raw material as metallurgical industry with carbon composite.
This embodiment preparation technology is simple, and prepared graphite powder has excellent mechanical behavior under high temperature, antioxidant property, thermal shock resistance ability and anti-scour property, can satisfy high-temperature material production and use the requirement to graphite.
Claims (4)
1. a high-temperature material is characterized in that earlier the Graphite Powder 99 of 70 ~ 98wt% and the silicon-containing material of 2 ~ 30wt% being mixed seasoning 24 hours 2 ~ 10 minutes with the preparation method of graphite powder; Thermal treatment 5 ~ 24 hours under 110 ~ 300 ℃ of conditions again, naturally cooling promptly gets high-temperature material and uses the graphite powder.
2. high-temperature material according to claim 1 is with the preparation method of graphite powder, and the particle diameter that it is characterized in that said Graphite Powder 99 is 3 ~ 500 μ m, the carbon content >=90wt% in the Graphite Powder 99.
3. high-temperature material according to claim 1 is characterized in that with the preparation method of graphite powder said silicon-containing material is silicone resin or is the mixture of silicone oil or silicone resin and silicone oil; Wherein: R in the silicone resin and the mol ratio of Si are 1: (1.0 ~ 2.0); The weight loss on drying of silicone oil≤2.0%, the density of silicone oil are 0.90 ~ 0.98g/cm
3
4. use the graphite powder according to each described high-temperature material in the claim 1 ~ 3 with the prepared high-temperature material of the preparation method of graphite powder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102602340A CN102745990A (en) | 2012-07-26 | 2012-07-26 | Graphite powder for high-temperature material and preparation method of graphite powder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102602340A CN102745990A (en) | 2012-07-26 | 2012-07-26 | Graphite powder for high-temperature material and preparation method of graphite powder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272273A (en) * | 2015-09-24 | 2016-01-27 | 焦作市金鑫恒拓高温材料有限公司 | Calcium magnesium carbon composite material and preparation method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB674324A (en) * | 1947-12-26 | 1952-06-25 | Dow Corning Ltd | Improvements in or relating to graphite articles |
| CN1162298A (en) * | 1994-11-04 | 1997-10-15 | 推进欧洲公司 | Method for oxidation protection of articles made of carbon-containing composite material |
-
2012
- 2012-07-26 CN CN2012102602340A patent/CN102745990A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB674324A (en) * | 1947-12-26 | 1952-06-25 | Dow Corning Ltd | Improvements in or relating to graphite articles |
| CN1162298A (en) * | 1994-11-04 | 1997-10-15 | 推进欧洲公司 | Method for oxidation protection of articles made of carbon-containing composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272273A (en) * | 2015-09-24 | 2016-01-27 | 焦作市金鑫恒拓高温材料有限公司 | Calcium magnesium carbon composite material and preparation method |
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Application publication date: 20121024 |