CN105202183A - High-temperature-resistant sealing gasket used for casting - Google Patents
High-temperature-resistant sealing gasket used for casting Download PDFInfo
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- CN105202183A CN105202183A CN201510652167.0A CN201510652167A CN105202183A CN 105202183 A CN105202183 A CN 105202183A CN 201510652167 A CN201510652167 A CN 201510652167A CN 105202183 A CN105202183 A CN 105202183A
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Abstract
The invention relates to the field of sealing gaskets, in particular to a high-temperature-resistant sealing gasket used for casting. The high-temperature-resistant sealing gasket comprises rubber layers and a metal layer and is characterized in that a hard layer is arranged between the two rubber layers and connected through an adhesive; the hard layer is prepared from, by weight, 50-70 parts of quartz sand, 20-30 parts of ferric oxide, 5-7 parts of titanium and 6-8 parts of nickel; each rubber layer is prepared from, by weight, 100-110 parts of acrylate, 10-20 parts of carbon black, 2-3 parts of accelerant, 50-60 parts of tetrapropyl fluoro rubber, 5-9 parts of dicumyl peroxide, 6-11 parts of calcium sulfate, 11-15 parts of nanometer argil, 2-4 parts of tributyl citrate, 2-5 parts of glass fiber, 8-12 parts of bauxite powder, 1-2 parts of potassium fluoroaluminate, 13-16 parts of silicon dioxide powder, 0.5-2 parts of scorch retarder, 1-2 parts of antioxidants, and 1-2 parts of antiager. Good performance of the sealing gasket can be kept for a long time at high temperature.
Description
Technical field:
The present invention relates to sealing gasket field, relate to a kind of casting refractory seal pad in particular.
Background technique:
Sealing gasket generally will note following condition: high resilience and rebound elasticity; Suitable mechanical strength, comprise tensile strength, elongation percentage and tearing toughness etc., stable performance, not easily swelling in media as well, thermal pinch (joule effect) is little, easy machine shaping, and can keep accurate size, do not corrode surface of contact, not pollution medium etc., in current Foundry Production, pouring and riser systems and sandbox seal and must tightly process, this just needs to use sealing gasket, when pouring into a mould alloy, temperature is very high, contacts high temperature for a long time, general sealing gasket elasticity and hardness can slowly reduce, and sealing effect can be worse and worse.
Summary of the invention:
Technical problem to be solved by this invention is that overcoming existing technological deficiency provides a kind of casting refractory seal pad.
Technical problem to be solved by this invention adopts following technological scheme to realize:
A kind of casting refractory seal pad, comprise rubber layer and metal layer, it is characterized in that described hard layer is located in the middle of two-layer rubber layer, and connected by adhesive, described hard layer is made up of the raw material of following weight portion: 50-70 part silica sand, 20-30 part iron oxide, 5-7 part titanium, 6-8 part nickel, described rubber layer is made up of the component of following weight portion: 100-110 part acrylate, 10-20 part carbon black, 2-3 part promoter, 50-60 part 4 third fluorine rubber, 5-9 part cumyl peroxide, 6-11 part calcium sulfate, 11-15 part nanoclay, 2-4 part ATBC, 2-5 part glass fibre, 8-12 part bauxite powder, 1-2 part potassium fluoroaluminate, 13-16 part SiO 2 powder, 0.5-2 part anti-coke agent, 1-2 part antioxidant, 1-2 part age resister.
Further, described adhesive comprises the parts by weight of component of 70-80 part white clay, 10-20 part sodium hydroxide, 34-40 part phosphoric acid, 25-36 part magnesium silicate, 16-24 part epoxy resin, 3-5 part auxiliary agent.Rubber layer and hard layer can firmly bond together by the binder of this kind of formula in the case of a high temperature.
A manufacture method for casting refractory seal pad, is characterized in that comprising the following steps:
(1) preparation method of hard layer: silica sand is placed in electric furnace and melts, then adds titanium, iron oxide and nickel, and melting is stirred, and then leaves standstill, and removing surface scum, is poured into die for molding, namely obtains hard layer;
(2) acrylate, 4 third fluorine rubber and anti-coke agent are put into mill, practice ripe bag roller, then carbon black, cumyl peroxide, antioxidant, nanoclay is added, continue to begin to pratise, mixing evenly after add remaining ingredient, then begin to pratise, cooling after terminating, then send in vulcanizing press and carry out twice sulfuration, the sulfurize temperature of primary vulcanization controls at 190-210 DEG C, and cure time is 5-6min, and then primary vulcanization is complete carries out second time sulfuration, second time sulfuration is 250-260 DEG C, and cure time is 1-2 minute, then makes rubber layer;
(3) hard layer is bonded in the middle of two-layer rubber layer by adhesive.
The present invention adopts two kinds of different material components to form, there is heat-resisting quantity and certain anti-pressure ability, the SiO 2 powder added, glass fibre significantly can increase the ageing resistance of sealing gasket, the nanoclay added and bauxite powder can improve the hardness of high-temperature condition lower seal pad, and the present invention can at high temperature remain unchanged the good performance of permanent maintenance.
Embodiment:
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with specific embodiment, setting forth the present invention further.
Embodiment 1: a kind of casting refractory seal pad, comprise rubber layer and metal layer, it is characterized in that described hard layer is located in the middle of two-layer rubber layer, and connected by adhesive, described hard layer is made up of the raw material of following weight portion: 50 parts of silica sands, 20 parts of iron oxide, 5 parts of titaniums, 6 parts of nickel, described rubber layer is made up of the component of following weight portion: 100 parts of acrylate, 10 parts of carbon blacks, 2 parts of promoter, 50 part of 4 third fluorine rubber, 5 parts of cumyl peroxides, 6 parts of calcium sulfate, 11 parts of nanoclay, 2 parts of ATBCs, 2 parts of glass fibres, 8 parts of bauxite powder, 1 part of potassium fluoroaluminate, 13 parts of SiO 2 powders, 0.5 part of anti-coke agent, 1 part of antioxidant, 1 part of age resister.
Adhesive comprises the parts by weight of component of 70 parts of white clay, 10 parts of sodium hydroxide, 34 parts of phosphoric acid, 25 parts of magnesium silicates, 16 parts of epoxy resin, 3 parts of auxiliary agents.
Embodiment 2: a kind of casting refractory seal pad, comprise rubber layer and metal layer, it is characterized in that described hard layer is located in the middle of two-layer rubber layer, and connected by adhesive, described hard layer is made up of the raw material of following weight portion: 70 parts of silica sands, 30 parts of iron oxide, 7 parts of titaniums, 8 parts of nickel, described rubber layer is made up of the component of following weight portion: 110 parts of acrylate, 20 parts of carbon blacks, 3 parts of promoter, 60 part of 4 third fluorine rubber, 9 parts of cumyl peroxides, 11 parts of calcium sulfate, 15 parts of nanoclay, 4 parts of ATBCs, 5 parts of glass fibres, 12 parts of bauxite powder, 2 parts of potassium fluoroaluminates, 16 parts of SiO 2 powders, 2 parts of anti-coke agent, 2 parts of antioxidant, 2 parts of age resister.
Adhesive comprises the parts by weight of component of 80 parts of white clay, 20 parts of sodium hydroxide, 40 parts of phosphoric acid, 36 parts of magnesium silicates, 24 parts of epoxy resin, 5 parts of auxiliary agents.Rubber layer and hard layer can firmly bond together by the binder of this kind of formula in the case of a high temperature.
A manufacture method for casting refractory seal pad, is characterized in that comprising the following steps:
(1) preparation method of hard layer: silica sand is placed in electric furnace and melts, then adds titanium, iron oxide and nickel, and melting is stirred, and then leaves standstill, and removing surface scum, is poured into die for molding, namely obtains hard layer;
(2) acrylate, 4 third fluorine rubber and anti-coke agent are put into mill, practice ripe bag roller, then carbon black, cumyl peroxide, antioxidant, nanoclay is added, continue to begin to pratise, mixing evenly after add remaining ingredient, then begin to pratise, cooling after terminating, then send in vulcanizing press and carry out twice sulfuration, the sulfurize temperature of primary vulcanization controls at 190-210 DEG C, and cure time is 5-6min, and then primary vulcanization is complete carries out second time sulfuration, second time sulfuration is 250-260 DEG C, and cure time is 1-2 minute, then makes rubber layer;
(3) hard layer is bonded in the middle of two-layer rubber layer by adhesive.
More than show and describe basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a casting refractory seal pad, comprise rubber layer and metal layer, it is characterized in that described hard layer is located in the middle of two-layer rubber layer, and connected by adhesive, described hard layer is made up of the raw material of following weight portion: 50-70 part silica sand, 20-30 part iron oxide, 5-7 part titanium, 6-8 part nickel, described rubber layer is made up of the component of following weight portion: 100-110 part acrylate, 10-20 part carbon black, 2-3 part promoter, 50-60 part 4 third fluorine rubber, 5-9 part cumyl peroxide, 6-11 part calcium sulfate, 11-15 part nanoclay, 2-4 part ATBC, 2-5 part glass fibre, 8-12 part bauxite powder, 1-2 part potassium fluoroaluminate, 13-16 part SiO 2 powder, 0.5-2 part anti-coke agent, 1-2 part antioxidant, 1-2 part age resister.
2. a kind of casting refractory seal pad according to claim 1, is characterized in that: described adhesive comprises the parts by weight of component of 70-80 part white clay, 10-20 part sodium hydroxide, 34-40 part phosphoric acid, 25-36 part magnesium silicate, 16-24 part epoxy resin, 3-5 part auxiliary agent.
3. a casting manufacture method for refractory seal pad, is characterized in that comprising the following steps:
(1) preparation method of hard layer: silica sand is placed in electric furnace and melts, then adds titanium, iron oxide and nickel, and melting is stirred, and then leaves standstill, and removing surface scum, is poured into die for molding, namely obtains hard layer;
(2) acrylate, 4 third fluorine rubber and anti-coke agent are put into mill, practice ripe bag roller, then carbon black, cumyl peroxide, antioxidant, nanoclay is added, continue to begin to pratise, mixing evenly after add remaining ingredient, then begin to pratise, cooling after terminating, then send in vulcanizing press and carry out twice sulfuration, the sulfurize temperature of primary vulcanization controls at 190-210 DEG C, and cure time is 5-6min, and then primary vulcanization is complete carries out second time sulfuration, second time sulfuration is 250-260 DEG C, and cure time is 1-2 minute, then makes rubber layer;
(3) hard layer is bonded in the middle of two-layer rubber layer by adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652167.0A CN105202183A (en) | 2015-10-08 | 2015-10-08 | High-temperature-resistant sealing gasket used for casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510652167.0A CN105202183A (en) | 2015-10-08 | 2015-10-08 | High-temperature-resistant sealing gasket used for casting |
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| Publication Number | Publication Date |
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| CN105202183A true CN105202183A (en) | 2015-12-30 |
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| CN201510652167.0A Pending CN105202183A (en) | 2015-10-08 | 2015-10-08 | High-temperature-resistant sealing gasket used for casting |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666091A (en) * | 2009-11-09 | 2012-09-12 | Nok株式会社 | Layered rubber/metal product |
| CN102844177A (en) * | 2010-02-22 | 2012-12-26 | Nok株式会社 | Fluororubber-metal laminate |
| CN102993515A (en) * | 2012-11-01 | 2013-03-27 | 安徽荣达阀门有限公司 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
| CN103517942A (en) * | 2011-03-31 | 2014-01-15 | Nok株式会社 | NBR composition and rubber-metal laminate |
| CN104086718A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | Rubber material for automobile oil seal |
-
2015
- 2015-10-08 CN CN201510652167.0A patent/CN105202183A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102666091A (en) * | 2009-11-09 | 2012-09-12 | Nok株式会社 | Layered rubber/metal product |
| CN102844177A (en) * | 2010-02-22 | 2012-12-26 | Nok株式会社 | Fluororubber-metal laminate |
| EP2540494A1 (en) * | 2010-02-22 | 2013-01-02 | NOK Corporation | Fluororubber-metal laminate |
| CN103517942A (en) * | 2011-03-31 | 2014-01-15 | Nok株式会社 | NBR composition and rubber-metal laminate |
| CN102993515A (en) * | 2012-11-01 | 2013-03-27 | 安徽荣达阀门有限公司 | Nano bentonite modified chloroprene rubber gasket and preparation method thereof |
| CN104086718A (en) * | 2014-07-02 | 2014-10-08 | 安徽宁国尚鼎橡塑制品有限公司 | Rubber material for automobile oil seal |
Non-Patent Citations (1)
| Title |
|---|
| 翁国文: "《橡胶技术问答—原料•工艺•配方篇》", 31 July 2010, 化学工业出版社 * |
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Application publication date: 20151230 |
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