CN105964888A - Novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as adhesive and preparation method thereof - Google Patents
Novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as adhesive and preparation method thereof Download PDFInfo
- Publication number
- CN105964888A CN105964888A CN201610457066.2A CN201610457066A CN105964888A CN 105964888 A CN105964888 A CN 105964888A CN 201610457066 A CN201610457066 A CN 201610457066A CN 105964888 A CN105964888 A CN 105964888A
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- CN
- China
- Prior art keywords
- animal glue
- sand
- bonding agent
- velveteen
- stirring
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
Abstract
The invention discloses a novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as an adhesive. The moulding sand is characterized in that the gelatin is modified through cotton pulp dreg to obtain a novel moulding sand adhesive; when in the preparation process, cotton pulp dreg is dissolved in ionic liquid and then mixed with an etherified gelatin solution, and finally the mixture is crosslinked through glutaraldehyde to obtain the adhesive which is high in intensity, high in adhering performance, fast to cure, and superior to a traditional adhesive; in addition, sodium alginate added in the sand mixing process can be crosslinked and hybridized with calcium chloride to form high-breathability micropore channels, so that the prepared moulding sand is high in breathability and high in collapsibility; a casting casted with the prepared moulding sand is high in quality, and high in production capacity, so that the moulding sand has a wide application prospect in the casting field.
Description
Technical field
The present invention relates to casting sand technical field, particularly relate to a kind of novel environment friendly molding sand using velveteen pulp modified animal glue as bonding agent and preparation method thereof.
Background technology
Molding sand refers to the material in casting for moulding, and molding sand is typically mixed according to a certain percentage by Modeling Materials such as Foundry sand, moulding sand binder and additional things.Molding sand is different by binding agent used, can be divided into clay-bonded sand, water-glass sand, cement bonded sand, resin sand etc..Molding sand effect in Foundry Production is particularly important, and the casting wasted product caused because of the poor quality of molding sand accounts for the 30～50% of the total waste product of foundry goods.Judge on ordinary meaning that moulding-sand property is mainly reflected in the following aspects: (1) has higher intensity and heat stability；(2) ability that good mobility, i.e. molding sand are mutually shifted between sand grains under external force or action of gravity own；(3) certain plasticity, i.e. molding sand deform under external force, can keep the ability of the shape given after external force is removed；(4) preferably breathability, i.e. molding sand hole is through the ability of gas；(5) high collapsibility, it is easy to defeated and dispersed cleaning.
Along with industrial expansion, requirement to foundry industry is more and more higher, and the quality of molding sand is the key factor being related to casting quality, the main flow molding sand of existing market mainly have waterglass, clay etc. one class inorganic adhesive molding sand and the organic adhesive molding sand of class such as synthetic resin, dextrin.To be primarily present collapsibility poor for the inorganic adhesive class molding sand of main flow in the market, the easy moisture absorption, the defects such as old sand utilization rate is low；Although resin sand collapsibility is good, casting accuracy is high, but it easily produces pollution gas in casting process." research of a kind of composite modified animal glue bonding agent preparation technology " literary composition describes the molding sand using modified animal glue as bonding agent, such molding sand environmental protection is degradable, defeated and dispersed effective, feasible developing direction is provided for developing novel molding sand, yet with the natural attribute of animal glue, actual application improves adhesion strength, accelerates curing rate and be still the emphasis of research.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of novel environment friendly molding sand using velveteen pulp modified animal glue as bonding agent and preparation method thereof.
The present invention is achieved by the following technical solutions:
A kind of novel environment friendly molding sand using velveteen pulp modified animal glue as bonding agent, this molding sand is made up of the raw material of following weight portion: 200-400 mesh quartz sand old sand 60-80, brucite fiber 8-10, flyash 20-30, NACF 2-3, velveteen pulp modified animal glue bonding agent 12-15, concentration be sodium alginate aqueous solution 4-5 of 5-10%, concentration be the calcium chloride water 6-10 of 1-10%.
Described velveteen pulp modified animal glue bonding agent is made up of the raw material of following weight portion: velveteen pulp 4-5, animal glue 30-40,1-pi-allyl, and 3-methyl chloride imidazole salts 10-12,3-chloro-2-hydroxypropyl-trimethyl ammonium chloride 1-2, mass concentration are the glutaraldehyde water solution 5-8 of 10-15%, deionized water 30-40；Its preparation method is: first mixed with deionized water by animal glue, it is heated to 50-60 DEG C, stirring adds 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride after forming homogeneous solution, etherificate gelatin solution is made standby after continuing stirring mixing 5-6h, then velveteen pulp is put into 1-pi-allyl, in 3-methyl chloride imidazole salts, and system is heated to 80-90 DEG C, stirring is slowly added to after being completely dissolved to velveteen pulp be etherified gelatin solution, stirring while adding, stirring mixing 2-3h is continued after interpolation, finally add glutaraldehyde water solution, discharging is filtered after being uniformly mixed, obtain described velveteen pulp modified animal glue bonding agent.
The preparation method of this molding sand is: first with sodium alginate aqueous solution stirring, quartz sand old sand, brucite fiber, flyash, NACF are mixed 50-80min, it is subsequently added calcium chloride water, continue stirring mixing 3-5h, stirring adds velveteen pulp modified animal glue bonding agent mixing 5-10min after terminating, and to obtain final product.
The present invention utilizes velveteen pulp to be modified animal glue processing, prepare a kind of novel molding sand bonding agent, in preparation process, velveteen pulp is dissolved in ionic liquid, again it is mixed with etherificate gelatin solution, through glutaraldehyde cross-linking after, the bonding agent intensity prepared is high, cohesive force is strong, curing rate is fast, with the obvious advantage than traditional bonding agent, the sodium alginate added during this external mulling and the cross-linking hydridization of calcium chloride, form the micro channel that height is ventilative, thus obtain the product with fine air permeability and collapsibility, casting quality height with molding sand cast prepared by the present invention, production capacity is low, have broad application prospects at casting field.
Detailed description of the invention
This embodiment molding sand is made up of the raw material of following weight portion: the calcium chloride water 6 that sodium alginate aqueous solution 4 that 200 mesh quartz sand old sands 60, brucite fiber 8, flyash 20, NACF 2, velveteen pulp modified animal glue bonding agent 12, concentration are 5%, concentration are 1%.
Wherein velveteen pulp modified animal glue bonding agent is made up of the raw material of following weight portion: velveteen pulp 4, animal glue 30,1 pi-allyl, and 3 methyl chloride imidazole salts 10,3-chloro-2-hydroxypropyl-trimethyl ammonium chloride 1, mass concentration are glutaraldehyde water solution 5, the deionized water 30 of 10%；Its preparation method is: first mixed with deionized water by animal glue, it is heated to 50 DEG C, stirring adds 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride after forming homogeneous solution, etherificate gelatin solution is made standby after continuing stirring mixing 5h, then velveteen pulp is put into 1 pi-allyl, in 3 methyl chloride imidazole salts, and system is heated to 80 DEG C, stirring is slowly added to after being completely dissolved to velveteen pulp be etherified gelatin solution, stirring while adding, stirring mixing 2h is continued after interpolation, finally add glutaraldehyde water solution, discharging is filtered after being uniformly mixed, obtain described velveteen pulp modified animal glue bonding agent.
The preparation method of this molding sand is: first with sodium alginate aqueous solution stirring, quartz sand old sand, brucite fiber, flyash, NACF are mixed 50min, it is subsequently added calcium chloride water, continue stirring mixing 3h, stirring adds velveteen pulp modified animal glue bonding agent mixing 5min after terminating, and to obtain final product.
The result that the molding sand that this embodiment prepares obtains according to associated test standards's test is as follows:
Green compression strength: 115KPa；Compact rate of molding: 48.2%；Air penetrability: 98；Hot green tensile strength: 52.4KPa；Shatter index: 90%.
Claims (3)
1. one kind using velveteen pulp modified animal glue as the novel environment friendly molding sand of bonding agent, it is characterized in that, this molding sand is made up of the raw material of following weight portion: 200-400 mesh quartz sand old sand 60-80, brucite fiber 8-10, flyash 20-30, NACF 2-3, velveteen pulp modified animal glue bonding agent 12-15, concentration be sodium alginate aqueous solution 4-5 of 5-10%, concentration be the calcium chloride water 6-10 of 1-10%.
A kind of novel environment friendly molding sand using velveteen pulp modified animal glue as bonding agent, it is characterized in that, described velveteen pulp modified animal glue bonding agent is made up of the raw material of following weight portion: velveteen pulp 4-5, animal glue 30-40,1-pi-allyl, and 3-methyl chloride imidazole salts 10-12,3-chloro-2-hydroxypropyl-trimethyl ammonium chloride 1-2, mass concentration are the glutaraldehyde water solution 5-8 of 10-15%, deionized water 30-40；Its preparation method is: first mixed with deionized water by animal glue, it is heated to 50-60 DEG C, stirring adds 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride after forming homogeneous solution, etherificate gelatin solution is made standby after continuing stirring mixing 5-6h, then velveteen pulp is put into 1-pi-allyl, in 3-methyl chloride imidazole salts, and system is heated to 80-90 DEG C, stirring is slowly added to after being completely dissolved to velveteen pulp be etherified gelatin solution, stirring while adding, stirring mixing 2-3h is continued after interpolation, finally add glutaraldehyde water solution, discharging is filtered after being uniformly mixed, obtain described velveteen pulp modified animal glue bonding agent.
A kind of preparation method using velveteen pulp modified animal glue as the novel environment friendly molding sand of bonding agent, it is characterized in that, described preparation method is: first with sodium alginate aqueous solution stirring, quartz sand old sand, brucite fiber, flyash, NACF are mixed 50-80min, it is subsequently added calcium chloride water, continue stirring mixing 3-5h, stirring adds velveteen pulp modified animal glue bonding agent mixing 5-10min after terminating, and to obtain final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457066.2A CN105964888A (en) | 2016-06-22 | 2016-06-22 | Novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as adhesive and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610457066.2A CN105964888A (en) | 2016-06-22 | 2016-06-22 | Novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as adhesive and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105964888A true CN105964888A (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610457066.2A Pending CN105964888A (en) | 2016-06-22 | 2016-06-22 | Novel environmentally-friendly moulding sand using cotton pulp dreg modified gelatin as adhesive and preparation method thereof |
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| CN (1) | CN105964888A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748649A (en) * | 2009-12-17 | 2010-06-23 | 华东理工大学 | Method for manufacturing fly ash fiber pulp performance modifier |
| CN102401023A (en) * | 2011-11-15 | 2012-04-04 | 无锡贺安特动力科技有限公司 | Carbon-based wear-resistant synchronous toothed ring |
| CN105033173A (en) * | 2015-09-23 | 2015-11-11 | 张燕 | Vanadium iron slag-corundum slag coating for lost foam casting and manufacturing method thereof |
| CN105414461A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand |
-
2016
- 2016-06-22 CN CN201610457066.2A patent/CN105964888A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101748649A (en) * | 2009-12-17 | 2010-06-23 | 华东理工大学 | Method for manufacturing fly ash fiber pulp performance modifier |
| CN102401023A (en) * | 2011-11-15 | 2012-04-04 | 无锡贺安特动力科技有限公司 | Carbon-based wear-resistant synchronous toothed ring |
| CN105033173A (en) * | 2015-09-23 | 2015-11-11 | 张燕 | Vanadium iron slag-corundum slag coating for lost foam casting and manufacturing method thereof |
| CN105414461A (en) * | 2015-11-25 | 2016-03-23 | 铜陵市经纬流体科技有限公司 | High-permeability compact composite modified sodium silicate-bonded sand for pump valve castings and preparation method of high-permeability compact composite modified sodium silicate-bonded sand |
Non-Patent Citations (1)
| Title |
|---|
| 李英民等: "改性动物胶原蛋白粘结剂的研究进展", 《2015中国铸造活动周论文集》 * |
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Application publication date: 20160928 |