CN102942887A - Foamed plastic binder for lost form casting and method for preparing binder - Google Patents
Foamed plastic binder for lost form casting and method for preparing binder Download PDFInfo
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- CN102942887A CN102942887A CN2012104764886A CN201210476488A CN102942887A CN 102942887 A CN102942887 A CN 102942887A CN 2012104764886 A CN2012104764886 A CN 2012104764886A CN 201210476488 A CN201210476488 A CN 201210476488A CN 102942887 A CN102942887 A CN 102942887A
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- binding agent
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- lost foam
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Abstract
The invention discloses a foamed plastic binder for lost form casting and a method for preparing the binder. The foamed plastic binder for lost form casting comprises, by mass, 62.4% to 66.4% of methanol or ethanol, 11.1% to 12.5% of polyvinyl butyral (PVB), 11.1% to 12.5% of phenolic resins, 11.1% to 12.5% of rosin and 0.12% to 0.44% of surface active agents, wherein the total content of the constituents is 100%. The invention further discloses a method for preparing the foamed plastic binder, the weighed methanol or ethanol, the PVB, the phenolic resins, the rosin and the surface active agents are mixed to be stirred fully and evenly. The binder is rapid in bonding speed, the strength is high, and defects that the gas evolution is high, the residues are many after burning, the bonding capability is weak, and the usage amount is large of prior binders are overcome.
Description
Technical field
The invention belongs to the Technology of EPC field, be specifically related to a kind of porous plastics binding agent for lost foam casting, the invention still further relates to the preparation method of the porous plastics binding agent of above-mentioned lost foam casting.
Background technology
The preparation of dispellable mould casting foam mould is one of important procedure in the lost foam casting.And if apperance when preparing binding agent select improper, as the binder amount that is coated with is too much or very few, not only affects molding efficient, the residue after the gas forming amount in the time of also can increasing cast and the burning, and make the apperance each several part in conjunction with bad, cause indenture or the veining defect of cast(ing) surface.In order to obtain the foundry goods of high-quality, in the pouring metal melt process, not only require plastic mold gasification fully, not stay residue, require simultaneously apperance with the binding agent gasification rapidly, noresidue.
In the apperance preparation process, the consumption of binding agent is more few better, otherwise following phenomenon can appear in too much binding agent: be unfavorable for the rapid gasification of porous plastics; Affect the quality of foundry goods because of increasing of residue; Delayed the moulding cycle because the water-absorbent of porous plastics and ventilation property official post time of drying are long, and because porous plastics is dissolved in ester, benzene muriate and most of organic solvents such as ether, acetone, and being insoluble to alcohol and water, this just makes the binding agent that is adapted to porous plastics be subjected to considerable restraint.
Summary of the invention
The purpose of this invention is to provide a kind of porous plastics binding agent for lost foam casting, solved that existing binding agent exists that gas forming amount is high, the low large problem of usage quantity that reaches of many, the cohesiveness of residue after the burning.
Another object of the present invention provides the preparation method of the porous plastics binding agent of above-mentioned lost foam casting.
The technical solution adopted in the present invention is that the porous plastics binding agent for lost foam casting is comprised of following active principle according to mass percent:
Methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%.
Characteristics of the present invention also are,
Tensio-active agent adopts a kind of in JFC, OP or the peregal.
The second technical scheme of the present invention is, is used for the preparation method of the porous plastics binding agent of lost foam casting, specifically implements according to following steps:
Step 1, weighing medicine:
Take by weighing respectively by mass percentage methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%;
The porous plastics binding agent of step 2, preparation lost foam casting of the present invention:
The methyl alcohol or ethanol, polyvinyl butyral resin PVB, resol, rosin and the tensio-active agent that take by weighing in the step 1 are mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
The characteristics of the second technical scheme of the present invention also are,
Tensio-active agent adopts a kind of in JFC, OP or the peregal.
The invention has the beneficial effects as follows,
(1) dispellable mould casting porous plastics binding agent cohesive strength of the present invention and use properties all are significantly increased, and rate of drying is fast, and dry rear cohesive strength is good;
(2) adopt in the dispellable mould casting porous plastics binding agent of the present invention molding consumption few, improve molding efficient, the residue after the gas forming amount when reducing cast simultaneously and the burning reduces indenture or the veining defect of cast(ing) surface, can obtain the foundry goods of high-quality;
(3) adhesive coated of the present invention is on foamed polystyrene pattern vacant several minutes, treats that organic solvent slightly volatilizees, and foamed polystyrene pattern is fastened and presses a little, can immediately set up preferably cohesive strength, and bonding efficiency is high;
(4) raw material sources that adopt in the inventive method are extensive, and cost is low, and manufacture craft is simple.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
The present invention is used for the porous plastics binding agent of lost foam casting, is comprised of following active principle according to mass percent:
Methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%.
Wherein tensio-active agent adopts a kind of in JFC, OP or the peregal.
Tensio-active agent JFC: be nonionogenic tenside, have good infiltration, wetting, emulsification, dispersive ability.
Surfactant OP: be nonionogenic tenside, outward appearance is white and oyster white mashed prod, has good level dyeing, emulsification, wetting, diffustivity.
Tensio-active agent peregal: be oyster white, beige paste or solid state, have good wet performance, and have preferably emulsification, dispersion, the performance such as clean.
The preparation method of the porous plastics binding agent of lost foam casting of the present invention, specifically implement according to following steps:
Step 1, weighing medicine:
Take by weighing respectively by mass percentage methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%;
The porous plastics binding agent of step 2, preparation lost foam casting of the present invention:
The methyl alcohol or ethanol, polyvinyl butyral resin PVB, resol, rosin and the tensio-active agent that take by weighing in the step 1 are mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
Wherein, binding agent is polyvinyl butyral resin PVB, adds rosin and can improve its cohesive strength; Wherein adopt methyl alcohol or ethanol as carrier fluid; Add tensio-active agent JFC, OP and average Calais and further improve its wetting and penetrating power.
Embodiment 1
Take by weighing respectively by mass percentage methyl alcohol or ethanol 62.4%, polyvinyl butyral resin PVB12.3%, resol 12.5%, rosin 12.5% and tensio-active agent JFC0.3%, the content summation of above component is 100%.And methyl alcohol, polyvinyl butyral resin PVB, resol, rosin and tensio-active agent JFC mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
Embodiment 2
Take by weighing respectively by mass percentage methyl alcohol or ethanol 64.8%, polyvinyl butyral resin PVB12.1%, resol 11.6%, rosin 11.2% and Surfactant OP 0.3%, the content summation of above component is 100%.And methyl alcohol, polyvinyl butyral resin PVB, resol, rosin and Surfactant OP mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
Embodiment 3
Take by weighing respectively by mass percentage methyl alcohol or ethanol 66.4%, polyvinyl butyral resin PVB11.1%, resol 11.2%, rosin 11.1% and tensio-active agent peregal 0.2%, the content summation of above component is 100%.And methyl alcohol, polyvinyl butyral resin PVB, resol, rosin and tensio-active agent peregal mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
Claims (4)
1. be used for the porous plastics binding agent of lost foam casting, it is characterized in that, formed by following active principle according to mass percent:
Methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%.
2. the porous plastics binding agent of a kind of lost foam casting according to claim 1 is characterized in that, described tensio-active agent adopts a kind of in JFC, OP and the peregal.
3. be used for the preparation method of the porous plastics binding agent of lost foam casting, it is characterized in that, specifically implement according to following steps:
Step 1, weighing medicine:
Take by weighing respectively by mass percentage methyl alcohol or ethanol 62.4% ~ 66.4%, polyvinyl butyral resin PVB11.1% ~ 12.5%, resol 11.1% ~ 12.5%, rosin 11.1% ~ 12.5% and tensio-active agent 0.12% ~ 0.44%, the content summation of above component is 100%;
The porous plastics binding agent of step 2, preparation lost foam casting of the present invention:
The methyl alcohol or ethanol, polyvinyl butyral resin PVB, resol, rosin and the tensio-active agent that take by weighing in the step 1 are mixed, stir, namely obtain the porous plastics binding agent of lost foam casting of the present invention.
4. the preparation method of the porous plastics binding agent that is used for lost foam casting in described according to claim 3 is characterized in that, described tensio-active agent is a kind of in JFC, OP or the peregal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210476488.6A CN102942887B (en) | 2012-11-22 | 2012-11-22 | Foamed plastic binder for lost form casting and method for preparing binder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210476488.6A CN102942887B (en) | 2012-11-22 | 2012-11-22 | Foamed plastic binder for lost form casting and method for preparing binder |
Publications (2)
| Publication Number | Publication Date |
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| CN102942887A true CN102942887A (en) | 2013-02-27 |
| CN102942887B CN102942887B (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210476488.6A Expired - Fee Related CN102942887B (en) | 2012-11-22 | 2012-11-22 | Foamed plastic binder for lost form casting and method for preparing binder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290312A (en) * | 2015-10-21 | 2016-02-03 | 和县科嘉阀门铸造有限公司 | Foamed plastic binder for lost foam casting of valve |
| CN105368383A (en) * | 2015-10-21 | 2016-03-02 | 安徽埃斯克制泵有限公司 | Foamed plastic binder for centrifugal pump lost foam casting |
| CN105694771A (en) * | 2016-02-01 | 2016-06-22 | 安徽埃斯克制泵有限公司 | Foam plastic board adhesive for pump body lost foam casting |
| CN108838330A (en) * | 2018-08-01 | 2018-11-20 | 安徽信息工程学院 | A kind of method for repairing and mending of evaporative pattern |
| CN109014037A (en) * | 2018-08-01 | 2018-12-18 | 安徽信息工程学院 | A kind of evaporative pattern mending paste and preparation method thereof |
| CN109909448A (en) * | 2019-03-28 | 2019-06-21 | 河北科技大学 | A kind of preparation method of dispellable mould casting bubbles model and the method for preparing metal-base composites with it |
| CN110079251A (en) * | 2019-05-05 | 2019-08-02 | 宁夏共享化工有限公司 | A kind of dispellable mould casting aqua type cold glue and preparation method thereof |
| CN110180993A (en) * | 2019-05-27 | 2019-08-30 | 西安工程大学 | The preparation method of special-shaped bent hole in a kind of metal |
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| JPH04372645A (en) * | 1991-06-24 | 1992-12-25 | Matsushita Electric Works Ltd | Phenol resin molding material |
| CN102061138A (en) * | 2009-11-17 | 2011-05-18 | 张维民 | Polyvinyl butyral (PVB) adhesive and preparation process thereof |
| CN102218502A (en) * | 2011-07-15 | 2011-10-19 | 浙江宸宇重工有限公司 | Isopropanol-based coating for lost foam casting steel and production method thereof |
| CN102337096A (en) * | 2010-07-19 | 2012-02-01 | 张苏侠 | Preparation method of phenolic-polyvinyl acetal resin adhesive |
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2012
- 2012-11-22 CN CN201210476488.6A patent/CN102942887B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04372645A (en) * | 1991-06-24 | 1992-12-25 | Matsushita Electric Works Ltd | Phenol resin molding material |
| CN102061138A (en) * | 2009-11-17 | 2011-05-18 | 张维民 | Polyvinyl butyral (PVB) adhesive and preparation process thereof |
| CN102337096A (en) * | 2010-07-19 | 2012-02-01 | 张苏侠 | Preparation method of phenolic-polyvinyl acetal resin adhesive |
| CN102218502A (en) * | 2011-07-15 | 2011-10-19 | 浙江宸宇重工有限公司 | Isopropanol-based coating for lost foam casting steel and production method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290312A (en) * | 2015-10-21 | 2016-02-03 | 和县科嘉阀门铸造有限公司 | Foamed plastic binder for lost foam casting of valve |
| CN105368383A (en) * | 2015-10-21 | 2016-03-02 | 安徽埃斯克制泵有限公司 | Foamed plastic binder for centrifugal pump lost foam casting |
| CN105694771A (en) * | 2016-02-01 | 2016-06-22 | 安徽埃斯克制泵有限公司 | Foam plastic board adhesive for pump body lost foam casting |
| CN108838330A (en) * | 2018-08-01 | 2018-11-20 | 安徽信息工程学院 | A kind of method for repairing and mending of evaporative pattern |
| CN109014037A (en) * | 2018-08-01 | 2018-12-18 | 安徽信息工程学院 | A kind of evaporative pattern mending paste and preparation method thereof |
| CN108838330B (en) * | 2018-08-01 | 2020-06-16 | 安徽信息工程学院 | Repairing method of lost foam |
| CN109909448A (en) * | 2019-03-28 | 2019-06-21 | 河北科技大学 | A kind of preparation method of dispellable mould casting bubbles model and the method for preparing metal-base composites with it |
| CN110079251A (en) * | 2019-05-05 | 2019-08-02 | 宁夏共享化工有限公司 | A kind of dispellable mould casting aqua type cold glue and preparation method thereof |
| CN110180993A (en) * | 2019-05-27 | 2019-08-30 | 西安工程大学 | The preparation method of special-shaped bent hole in a kind of metal |
Also Published As
| Publication number | Publication date |
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| CN102942887B (en) | 2014-01-08 |
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