CN105127362A - Preparation method for quick-hardening furan resin-sand - Google Patents
Preparation method for quick-hardening furan resin-sand Download PDFInfo
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- CN105127362A CN105127362A CN201510506447.0A CN201510506447A CN105127362A CN 105127362 A CN105127362 A CN 105127362A CN 201510506447 A CN201510506447 A CN 201510506447A CN 105127362 A CN105127362 A CN 105127362A
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Abstract
The invention relates to a preparation method for furan resin-sand, in particular to a preparation method for quick-hardening furan resin-sand. The quick-hardening furan resin-sand includes, by weight, 100 parts of silica sand, 0.1-0.5 part of super absorbent resin, 0.3-0.5 part of low-water-content acidic hardening agents and 0.8-1.5 parts of furan resin. The preparation method is characterized by comprising the steps of adding the silica sand and the super absorbent resin into a sand mixer, starting the sand mixer to mix the silica sand and the super absorbent resin evenly, adding the low-water-content acidic hardening agents through a hardening agent pump to be mixed evenly and quickly, adding the furan resin through a resin pump to be mixed evenly and quickly, and discharging the sand. The method is simple, part of moisture generated in the hardening reaction can be quickly absorbed, furan resin-sand hardening can be greatly accelerated, and the stripping time can be greatly shortened.
Description
Technical field
The present invention relates to a kind of preparation method of furan resin-sand, especially relate to a kind of preparation method of quick-hardening furan resin-sand.
Background technology
Furan resin-sand is common moulding sand for casting, has easy and simple to handle, working strength high.Furan resin-sand is made up of silica sand, furane resins, acid as curing agent usually.In use, first silica sand is mixed with acid curing agent, then add furane resins and carry out mulling, shake out to sandbox.From mulling be called stripping time to sand mold required time of hardening completely.
The solidification of furane resins is dehydration polymerization processes, and along with the carrying out of curing reaction, the water that reaction is produced gets more and more, and reduces the concentration of reactant on the one hand, reduces curing rate.On the other hand, the water be accumulated in sand mold needs the regular hour to be dispersed into air from inside.So the hardening process of furan resin-sand is comparatively slow, stripping time usually in half an hour to a few hours.
There is a lot of patent to propose to add in furane resins modifier to promote the solidification of furane resins as phenols, 2,5-dihydroxymethyl furans, at raising resin activity, accelerate to serve good effect in resin polymerization.But the lifting not larger to the shortening of stripping time.
Also there is no solution to the problems described above at present.
Summary of the invention
The object of the invention is the defect overcoming prior art, there is provided a kind of method portion of water that is simple, that can produce in curing reaction to be absorbed fast, the sclerosis of furan resin-sand can be accelerated greatly, shorten the preparation method of a kind of quick-hardening furan resin-sand of stripping time.
The present invention realizes in the following way:
A kind of preparation method of quick-hardening furan resin-sand, it is characterized in that: the method is for add puddle mixer by silica sand 100 parts, add super absorbent resin 0.1-0.5 part, start puddle mixer to mix, low water content acid curing agent 0.3-0.5 part is added again with catalyst pump, rapid mixing is even, then adds furane resins 0.8-1.5 part with resin pump, can shake out after rapid mixing is even;
Described super absorbent resin is any one or two or more mixture arbitrarily in the polyacrylic resin of water absorption rate >=50 times, polyvinyl alcohol resin, polyacrylamide resin;
Described super absorbent resin is Powdered, and its granularity is 50-100 order;
Described super absorbent resin addition is the 0.01%-0.05% of silica sand consumption;
Described furane resins are conventional urea-formaldehyde-modified furane resins;
The water content < 20% of described low water content acid curing agent.
The present invention has following effect:
1) method is simple: because of the invention provides method for silica sand 100 parts is added puddle mixer, add super absorbent resin 0.1-0.5 part, start puddle mixer to mix, low water content acid curing agent 0.3-0.5 part is added again with catalyst pump, rapid mixing is even, add furane resins 0.8-1.5 part with resin pump again, can shake out after rapid mixing is even.
2) invention increases the setting rate of furane resins, provide a kind of composition and using method of quick-hardening furan resin-sand.The method can meet the needs to resin bonded sand mould quick-hardening in actual production preferably.
3) the invention provides a kind of combined method of furan resin-sand, by adding high absorbent material in silica sand, the portion of water produced being absorbed fast, the sclerosis of furan resin-sand can be accelerated greatly in curing reaction.
Detailed description of the invention
Enforcement case one: a kind of preparation method of quick-hardening furan resin-sand, the method is:
1 ton of silica sand is added puddle mixer, add 3 kilograms, the polyacrylic resin powder that water absorbent rate is 50 times, start puddle mixer to mix, low water content acid curing agent 30 kilograms is added with catalyst pump, mixed system 1 minute, add furane resins 90 kilograms with resin pump again, mixed system 30 seconds, can shake out.
Embodiment two: a kind of preparation method of quick-hardening furan resin-sand, the method is:
1 ton of silica sand is added puddle mixer, add 2 kilograms, the polyvinyl alcohol resin powder that water absorbent rate is 100 times, start puddle mixer to mix, low water content acid curing agent 40 kilograms is added with catalyst pump, mixed system 1 minute, add furane resins 110 kilograms with resin pump again, mixed system 30 seconds, can shake out.
Embodiment three: a kind of preparation method of quick-hardening furan resin-sand, the method is:
1 ton of silica sand is added puddle mixer, add 3 kilograms, the polyacrylamide resin powder that water absorbent rate is 200 times, start puddle mixer to mix, low water content acid curing agent 50 kilograms is added with catalyst pump, mixed system 1 minute, add furane resins 120 kg with resin pump again, mixed system 30 seconds, can shake out.
Embodiment four: a kind of preparation method of quick-hardening furan resin-sand, the method is:
1 ton of silica sand is added puddle mixer, add that water absorbent rate is 1 kilogram, the polyacrylic resin powder of 50 times, to add water absorbent rate be 2 kilograms, the polyvinyl alcohol resin powder of 100 times, 1 kilogram, the polyacrylamide resin powder of 200 times, start puddle mixer to mix, low water content acid curing agent 50 kilograms is added with catalyst pump, mixed system 1 minute, add furane resins 120 kg with resin pump again, mixed system 30 seconds, can shake out.
Embodiment five: a kind of preparation method of quick-hardening furan resin-sand, the method is:
1 ton of silica sand is added puddle mixer, to add water absorbent rate be 1 kilogram, polyacrylic resin powder, the water absorbent rate of 50 times is 2 kilograms, the polyacrylamide resin powder of 200 times, start puddle mixer to mix, low water content acid curing agent 50 kilograms is added with catalyst pump, mixed system 1 minute, add furane resins 120 kg with resin pump again, mixed system 30 seconds, can shake out.
Described super absorbent resin requires as its granularity Powdered is 50-100 order, to facilitate mulling.
Described super absorbent resin addition is the 0.01%-0.05% of silica sand consumption, and very few water sorption is too little, too high, because the expansion after water suction causes molding sand to be out of shape.
Described furane resins are conventional urea-formaldehyde-modified furane resins.
Described low water content acid curing agent requires water content < 20%, to reduce the moisture introducing sand control.
Claims (6)
1. the preparation method of a quick-hardening furan resin-sand, it is characterized in that: the method is for add puddle mixer by silica sand 100 parts, add super absorbent resin 0.1-0.5 part, start puddle mixer to mix, low water content acid curing agent 0.3-0.5 part is added again with catalyst pump, rapid mixing is even, then adds furane resins 0.8-1.5 part with resin pump, can shake out after rapid mixing is even.
2. the preparation method of a kind of quick-hardening furan resin-sand as claimed in claim 1, is characterized in that: described super absorbent resin is any one or two or more mixture arbitrarily in the polyacrylic resin of water absorption rate >=50 times, polyvinyl alcohol resin, polyacrylamide resin.
3. the preparation method of a kind of quick-hardening furan resin-sand as claimed in claim 1, it is characterized in that: described super absorbent resin is Powdered, its granularity is 50-100 order.
4. the preparation method of a kind of quick-hardening furan resin-sand as claimed in claim 1, is characterized in that: described super absorbent resin addition is the 0.01%-0.05% of silica sand consumption.
5. the preparation method of a kind of quick-hardening furan resin-sand as claimed in claim 1, is characterized in that: described furane resins are conventional urea-formaldehyde-modified furane resins.
6. the preparation method of a kind of quick-hardening furan resin-sand as claimed in claim 1, is characterized in that: the water content < 20% of described low water content acid curing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510506447.0A CN105127362A (en) | 2015-08-18 | 2015-08-18 | Preparation method for quick-hardening furan resin-sand |
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| CN201510506447.0A CN105127362A (en) | 2015-08-18 | 2015-08-18 | Preparation method for quick-hardening furan resin-sand |
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| CN105127362A true CN105127362A (en) | 2015-12-09 |
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| CN201510506447.0A Pending CN105127362A (en) | 2015-08-18 | 2015-08-18 | Preparation method for quick-hardening furan resin-sand |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950339A (en) * | 2017-05-04 | 2017-07-14 | 江苏汽铸造股份有限公司 | The assay method of sulfur content in curing agent |
| CN107282870A (en) * | 2017-07-11 | 2017-10-24 | 马鞍山市兴隆铸造有限公司 | A kind of preparation method of high intensity furan resin-sand |
| CN109175221A (en) * | 2018-10-16 | 2019-01-11 | 阜新力达钢铁铸造有限公司 | A kind of casting self-hardening furan resin curing agent and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080125517A1 (en) * | 2006-09-29 | 2008-05-29 | Clingerman Michael C | Accelerated furanic aggregate binders from bio-derived components |
| CN101992260A (en) * | 2010-11-05 | 2011-03-30 | 中国第一汽车集团公司 | Furan self-hardening resin sand mold for producing integral casting axle case |
| CN102059318A (en) * | 2011-01-18 | 2011-05-18 | 重庆大学 | Fiber reinforced resin sand |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
| CN102898985A (en) * | 2012-08-28 | 2013-01-30 | 石家庄世易糠醛糠醇有限公司 | Preparation method for furan nitrogen-free environment protection casting resin adhesive |
| JP2014213368A (en) * | 2013-04-26 | 2014-11-17 | 花王株式会社 | Binder composition for producing mold |
-
2015
- 2015-08-18 CN CN201510506447.0A patent/CN105127362A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080125517A1 (en) * | 2006-09-29 | 2008-05-29 | Clingerman Michael C | Accelerated furanic aggregate binders from bio-derived components |
| CN101992260A (en) * | 2010-11-05 | 2011-03-30 | 中国第一汽车集团公司 | Furan self-hardening resin sand mold for producing integral casting axle case |
| CN102059318A (en) * | 2011-01-18 | 2011-05-18 | 重庆大学 | Fiber reinforced resin sand |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
| CN102898985A (en) * | 2012-08-28 | 2013-01-30 | 石家庄世易糠醛糠醇有限公司 | Preparation method for furan nitrogen-free environment protection casting resin adhesive |
| JP2014213368A (en) * | 2013-04-26 | 2014-11-17 | 花王株式会社 | Binder composition for producing mold |
Non-Patent Citations (2)
| Title |
|---|
| 张祖烈等: "关于冷硬呋喃树脂砂硬化过程影响因素的初步认识", 《热加工工艺》 * |
| 王国建: "《功能高分子材料》", 30 June 2014 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950339A (en) * | 2017-05-04 | 2017-07-14 | 江苏汽铸造股份有限公司 | The assay method of sulfur content in curing agent |
| CN106950339B (en) * | 2017-05-04 | 2019-08-02 | 江苏一汽铸造股份有限公司 | The measuring method of sulfur content in curing agent |
| CN107282870A (en) * | 2017-07-11 | 2017-10-24 | 马鞍山市兴隆铸造有限公司 | A kind of preparation method of high intensity furan resin-sand |
| CN109175221A (en) * | 2018-10-16 | 2019-01-11 | 阜新力达钢铁铸造有限公司 | A kind of casting self-hardening furan resin curing agent and preparation method thereof |
| CN109175221B (en) * | 2018-10-16 | 2020-07-10 | 阜新力达钢铁铸造有限公司 | Curing agent for casting self-hardening furan resin and preparation method thereof |
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Application publication date: 20151209 |
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