CN101941044B - Alkaline phenolic resin self-hardening sand - Google Patents
Alkaline phenolic resin self-hardening sand Download PDFInfo
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- CN101941044B CN101941044B CN2010102715994A CN201010271599A CN101941044B CN 101941044 B CN101941044 B CN 101941044B CN 2010102715994 A CN2010102715994 A CN 2010102715994A CN 201010271599 A CN201010271599 A CN 201010271599A CN 101941044 B CN101941044 B CN 101941044B
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Abstract
The invention discloses alkaline phenolic resin self-hardening sand, which comprises crude sand, an adhesive, a curing agent, a coupling agent and a lubricant, wherein the using amount of the curing agent is 30 to 50 percent based on that of the adhesive; the using amount of the coupling agent is 1 to 5 percent based on that of the adhesive; the using amount of the adhesive is 3 to 5 percent based on that of the crude sand; the using amount of the lubricant is 1 to 3 percent based on that of the crude sand; the coupling agent comprises the following components in percentage by weight: 80 to 90 percent of silane coupling agent and 10 to 20 percent of celluosic resin; the adhesive comprises the following components in percentage by weight: 60 to 70 percent of phenolic resin, 20 to 40 percent of alkaline solution and the balance of water; the solute of the alkaline solution is potassium hydroxide, sodium hydroxide or a mixture thereof; and the mass percentage concentration of the alkaline solution is more than or equal to 30 percent. The alkaline phenolic resin self-hardening sand has relatively lower hardening speed, is difficult to influence by an acid environment and can ensure the quality of iron and steel castings.
Description
Technical field
The present invention relates to a kind of self-hardening sand, relate in particular to a kind of alkalescent phenol resin self-hardening sand, specifically be applicable to the self-hardening sand cold-box that massive casting is adopted.
Background technology
Resin self-setting sand is generally formed by mixed preparing such as silica sand, resin and curing agents.Resin commonly used has furane resins, resol and urethane resin.The sand mold intensity of processing with this molding sand is high, size is accurate, collapsibility good, energy resource consumption is few, can be used for the production of cast steel, cast iron and cast nonferrous alloy foundry goods, and the surface quality of foundry goods and dimensional accuracy are high.Resin self-setting sand is a kind of rising moulding sand.
The Chinese patent Granted publication number is CN1216703C, and Granted publication day is that the patent of invention on August 31st, 2005 discloses a kind of self-hardening sand that belongs to casting industry, and it is a kind of environment-friendly type self-hardening sand; Pollution-free, collapsibility is good, tolerance is high, gas-forming property is little, and the foundry goods physical dimension is accurate; And; With low cost, method of operating is easy, can be widely used in whole casting industries such as automobile spare, radiator, bent axle, lathe, lathe.Though the self-hardening sand of this Invention Announce is pollution-free, collapsibility good, tolerance is high, its setting rate is very fast, is unwell to the casting of heavy castings, and this invention influenced by acid bigger, have a strong impact on the quality of steel casting spare.
Summary of the invention
The objective of the invention is to overcome the setting rate that exists in the prior art is very fast, be subject to the acids influence defective and problem, the alkalescent phenol resin self-hardening sand that a kind of setting rate is slow, the acid and alkali class influences is provided.
For realizing above purpose; Technical solution of the present invention is: a kind of alkalescent phenol resin self-hardening sand comprises roughing sand, binding agent, curing agent, coupling agent and lubricant, wherein; The consumption of curing agent is the 30-50% of binding agent consumption; The consumption of coupling agent is the 1-5% of binding agent consumption, and the consumption of binding agent is the 3-5% of roughing sand consumption, and the consumption of lubricant is the 1-3% of roughing sand consumption; Said coupling agent is the mixture of silane coupler and celluosic resin.
The consumption of said curing agent is 40% of a binding agent consumption, and the consumption of coupling agent is 2.5% of a binding agent consumption, and the consumption of binding agent is 4% of a roughing sand consumption, and the consumption of lubricant is 2% of a roughing sand consumption; The constituent of said coupling agent and weight portion ratio thereof are: silane coupler 80-90, celluosic resin 10-20.
The constituent of said binding agent and weight portion ratio thereof are: phenolic resins 60-70, and alkaline solution 20-40, all the other are water.
The mass percent concentration of said alkaline solution is more than or equal to 30%.
The solute of said alkaline solution is potassium hydroxide, NaOH or their mixture.
Compared with prior art, beneficial effect of the present invention is:
1, constituent and the weight portion ratio thereof owing to the binding agent that uses in a kind of alkalescent phenol resin self-hardening sand of the present invention is: phenolic resins 60-70; Alkaline solution 20-40, all the other are water, the mass percent concentration of alkaline solution is more than or equal to 30%; The solute of alkaline solution is potassium hydroxide, NaOH or their mixture; This kind design can not only bring bigger alkalescence for the present invention, makes the present invention not be subject to the influence of acid environment, thereby guarantees the quality with the steel and iron parts of acid; And; The setting rate of the binding agent that the present invention takes is slower, is very suitable for the production of heavy castings, can effectively avoid the uneven situation of casting that causes too soon owing to setting rate.Therefore not only setting rate is slower in the present invention, and is not subject to the influence of acids environment.
2, owing to the mixture of the coupling agent that uses in a kind of alkalescent phenol resin self-hardening sand of the present invention as silane coupler and celluosic resin; This kind coupling agent is in helping self-hardening sand the raw-material even mixing; Can also promote the appearance of the alkaline effect of binding agent among the present invention, help keeping setting rate of the present invention.Therefore setting rate of the present invention is slower.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done further detailed explanation
A kind of alkalescent phenol resin self-hardening sand; Comprise roughing sand, binding agent, curing agent, coupling agent and lubricant; Wherein, the consumption of curing agent is the 30-50% of binding agent consumption, and the consumption of coupling agent is the 1-5% of binding agent consumption; The consumption of binding agent is the 3-5% of roughing sand consumption, and the consumption of lubricant is the 1-3% of roughing sand consumption; Said coupling agent is the mixture of silane coupler and celluosic resin.
The consumption of preferred consolidation agent is 40% of a binding agent consumption, and the consumption of coupling agent is 2.5% of a binding agent consumption, and the consumption of binding agent is 4% of a roughing sand consumption, and the consumption of lubricant is 2% of a roughing sand consumption; The constituent of said coupling agent and weight portion ratio thereof are: silane coupler 80-90, celluosic resin 10-20.
The constituent of preferred binder and weight portion ratio thereof are: phenolic resins 60-70; Alkaline solution 20-40; All the other are water; The mass percent concentration of further preferred alkaline solution is more than or equal to 30%, and the solute of preferred alkaline solution is potassium hydroxide, NaOH or their mixture once more.
Embodiment 1:
A kind of alkalescent phenol resin self-hardening sand; Comprise roughing sand, binding agent, curing agent, coupling agent and lubricant; Wherein, the consumption of curing agent is 50% of a binding agent consumption, and the consumption of coupling agent is 1% of a binding agent consumption; The consumption of binding agent is 5% of a roughing sand consumption, and the consumption of lubricant is 1% of a roughing sand consumption; The constituent of coupling agent and weight portion ratio thereof are: silane coupler 80, celluosic resin 20; The constituent of binding agent and weight portion ratio thereof are: phenolic resins 60, and alkaline solution 20, all the other are water; The solute of alkaline solution is a potassium hydroxide, and the mass percent concentration of alkaline solution equals 40%.
Embodiment 2:
A kind of alkalescent phenol resin self-hardening sand; Comprise roughing sand, binding agent, curing agent, coupling agent and lubricant; Wherein, the consumption of curing agent is 30% of a binding agent consumption, and the consumption of coupling agent is 5% of a binding agent consumption; The consumption of binding agent is 3% of a roughing sand consumption, and the consumption of lubricant is 3% of a roughing sand consumption; The constituent of coupling agent and weight portion ratio thereof are: silane coupler 90, celluosic resin 10; The constituent of binding agent and weight portion ratio thereof are: phenolic resins 70, and alkaline solution 40, all the other are water; The solute of alkaline solution is a NaOH, and the mass percent concentration of alkaline solution equals 50%.
Embodiment 3:
A kind of alkalescent phenol resin self-hardening sand; Comprise roughing sand, binding agent, curing agent, coupling agent and lubricant; Wherein, the consumption of curing agent is 40% of a binding agent consumption, and the consumption of coupling agent is 2.5% of a binding agent consumption; The consumption of binding agent is 4% of a roughing sand consumption, and the consumption of lubricant is 2% of a roughing sand consumption; The constituent of coupling agent and weight portion ratio thereof are: silane coupler 85, celluosic resin 15; The constituent of binding agent and weight portion ratio thereof are: phenolic resins 65, and alkaline solution 30, all the other are water; The solute of alkaline solution is the mixture of potassium hydroxide and NaOH, and the mass percent concentration of alkaline solution equals 40%.
Therefore the present invention not only setting rate is slower, and is not subject to the influence of sour environment, can guarantee the quality of iron and steel casting.
The above is merely preferred embodiments of the present invention; Protection scope of the present invention is not exceeded with above-mentioned embodiment; As long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. alkalescent phenol resin self-hardening sand; Comprise roughing sand, binding agent, curing agent, coupling agent and lubricant; It is characterized in that: the consumption of said curing agent is the 30-50% of binding agent consumption; The consumption of coupling agent is the 1-5% of binding agent consumption, and the consumption of binding agent is the 3-5% of roughing sand consumption, and the consumption of lubricant is the 1-3% of roughing sand consumption; Said coupling agent is the mixture of silane coupler and celluosic resin, and the constituent of said binding agent and weight portion ratio thereof are: phenolic resins 60-70, and alkaline solution 20-40, all the other are water.
2. a kind of alkalescent phenol resin self-hardening sand according to claim 1; It is characterized in that: the consumption of said curing agent is 40% of a binding agent consumption; The consumption of coupling agent is 2.5% of a binding agent consumption; The consumption of binding agent is 4% of a roughing sand consumption, and the consumption of lubricant is 2% of a roughing sand consumption; The constituent of said coupling agent and weight portion ratio thereof are: silane coupler 80-90, celluosic resin 10-20.
3. a kind of alkalescent phenol resin self-hardening sand according to claim 1, it is characterized in that: the mass percent concentration of said alkaline solution is more than or equal to 30%.
4. a kind of alkalescent phenol resin self-hardening sand according to claim 3 is characterized in that: the solute of said alkaline solution is potassium hydroxide, NaOH or their mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102715994A CN101941044B (en) | 2010-09-03 | 2010-09-03 | Alkaline phenolic resin self-hardening sand |
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| CN2010102715994A CN101941044B (en) | 2010-09-03 | 2010-09-03 | Alkaline phenolic resin self-hardening sand |
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| CN101941044A CN101941044A (en) | 2011-01-12 |
| CN101941044B true CN101941044B (en) | 2012-09-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104139154B (en) * | 2014-07-30 | 2016-04-27 | 吴江市液铸液压件铸造有限公司 | A kind of phenolic resins self-hardening sand and preparation method thereof |
| CN105414450A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | Modified alkaline phenolic resin self-hardening sand of non-stick pump valve castings and preparation method of modified alkaline phenolic resin self-hardening sand |
| CN105414457A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | Efficient modified alkaline phenolic resin self-hardening sand for thin-walled pump valve casting and preparation method of efficient modified alkaline phenolic resin self-hardening sand |
| CN105414456A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | Alkaline phenolic resin self-hardening sand used for pump valve casting and capable of forming net-shaped compact structure and preparation method of alkaline phenolic resin self-hardening sand |
| CN105414454A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | PPTA(poly-p-phenylene terephthamide)-pulp enhanced modified alkaline phenolic resin self-hardening sand for pump valve castings and preparation method of PPTA-pulp enhanced modified alkaline phenolic resin self-hardening sand |
| CN105436397A (en) * | 2015-11-23 | 2016-03-30 | 合肥李诺新材料贸易有限公司 | Carbon-nanotube-containing modified alkaline phenolic resin self-hardening sand used for pump valve castings and preparation method of self-hardening sand |
| CN105414455A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | High-thermal-stability modified alkaline phenolic resin self-hardening sand for pump valve casting and preparation method of high-thermal-stability modified alkaline phenolic resin self-hardening sand |
| CN105414449A (en) * | 2015-11-23 | 2016-03-23 | 合肥李诺新材料贸易有限公司 | Heat resistant modified alkaline phenolic resin self-hardening sand for pump valve castings and preparation method of heat resistant modified alkaline phenolic resin self-hardening sand |
| CN105436392A (en) * | 2015-11-23 | 2016-03-30 | 合肥李诺新材料贸易有限公司 | Low-viscosity high-fluidity modified alkaline phenolic resin self-hardening sand for pump valve castings and preparation method of self-hardening sand |
| CN109385038A (en) * | 2017-08-11 | 2019-02-26 | 宁夏共享化工有限公司 | Self-hardening organic synthetic resin mixture and application thereof for increasing material manufacturing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2242683A (en) * | 1990-04-03 | 1991-10-09 | Kao Corp | Binder for foundry sand |
| CN1084789A (en) * | 1991-04-25 | 1994-04-06 | 福塞科国际有限公司 | The production method of foundry sand moulds and core |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127140A (en) * | 1985-11-26 | 1987-06-09 | Hitachi Chem Co Ltd | Resin coated sand for shell mold |
| JP2918444B2 (en) * | 1994-03-28 | 1999-07-12 | 群栄ボーデン株式会社 | Foundry sand for scrap molding |
-
2010
- 2010-09-03 CN CN2010102715994A patent/CN101941044B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2242683A (en) * | 1990-04-03 | 1991-10-09 | Kao Corp | Binder for foundry sand |
| CN1084789A (en) * | 1991-04-25 | 1994-04-06 | 福塞科国际有限公司 | The production method of foundry sand moulds and core |
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| CN101941044A (en) | 2011-01-12 |
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