CN105033171A - Release agent used for aluminum alloy hub die-casting die and preparation method thereof - Google Patents
Release agent used for aluminum alloy hub die-casting die and preparation method thereof Download PDFInfo
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- CN105033171A CN105033171A CN201510456282.0A CN201510456282A CN105033171A CN 105033171 A CN105033171 A CN 105033171A CN 201510456282 A CN201510456282 A CN 201510456282A CN 105033171 A CN105033171 A CN 105033171A
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Abstract
The invention discloses a release agent used for an aluminum alloy hub die-casting die and a preparation method thereof. The release agent comprises modified bentonite, sodium alginate, rice bran wax, dibutyltin dilaurate, triethanolamine, aluminum oxide and organic solvents, wherein the modified bentonite is obtained by calcining bentonite, soaking the bentonite in a hydrochloric acid solution and then filtering the hydrochloric acid solution. The release agent can be stored and used for a long time; meanwhile, the preparation method of the release agent is simple in step, and the raw materials are easy to obtain.
Description
Technical field
The present invention relates to releasing agent, particularly, relate to a kind of releasing agent for aluminium alloy wheel hub die casting and preparation method thereof.
Background technology
Aluminium alloy wheel hub, owing to having light weight and etch-proof characteristic, has been widely used in daily life, and these aluminium alloy wheel hubs are normally processed by the method for die cast.In the die cast process of aluminium alloy, need releasing agent in die casting, releasing agent is a kind of functional materials between mould and finished product.Releasing agent has following characteristic: 1) chemical resistance, is not namely dissolved when contacting with finished product; 2) there is heat-resisting and excellent stress performance, not easily decompose or wearing and tearing; 3) be easily adhered on mould and do not transfer on processed product.
At present, releasing agent for aluminium alloy wheel hub die casting can meet above-mentioned three characteristics substantially, but the not easily long term storage of existing releasing agent, this is the composition free settling due to releasing agent after long term storage, and the oxidized viscosity of releasing agent that causes increases and releasing agent is not easily adhered on mould simultaneously.
Summary of the invention
The object of this invention is to provide a kind of releasing agent for aluminium alloy wheel hub die casting and preparation method thereof, this releasing agent can long term storage and use, and preparation method's step of this releasing agent is simple simultaneously, and raw material is easy to get.
To achieve these goals, the invention provides a kind of releasing agent for aluminium alloy wheel hub die casting, containing modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent; Wherein, modified alta-mud is soaked in hydrochloric acid solution after being calcined by bentonite, then filters and obtains.
Present invention also offers a kind of preparation method of the releasing agent for aluminium alloy wheel hub die casting, comprising:
1) be soaked in hydrochloric acid solution after bentonite being calcined, then filter obtained modified alta-mud;
2) by obtained for the mixing of modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent releasing agent.
Pass through technique scheme, the present invention is first by calcine bentonite and salt acid soak obtains modified alta-mud with modification, and the system of the releasing agent then utilizing the synergy of modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent to make to obtain is homogeneous, composition not free settling and composition is not oxidizable and then ensure that releasing agent has excellent viscosity all the time.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Below the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The invention provides a kind of releasing agent for aluminium alloy wheel hub die casting, containing modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent; Wherein, modified alta-mud is soaked in hydrochloric acid solution after being calcined by bentonite, then filters and obtains.
In above-mentioned releasing agent, the concrete kind of organic solvent can be selected in wide scope, as long as other components can be made dispersedly in organic solvent just can, but in order to make releasing agent, there is more excellent viscosity and resistance to settling, preferably, organic solvent is selected from one or more in ethyl acetate, ethanol and n-hexane.
In above-mentioned releasing agent, the concrete content of each component can be selected in wide scope, but in order to make releasing agent, there is more excellent viscosity and resistance to settling, preferably, relative to the organic solvent of 100 weight portions, the content of modified alta-mud is 55-75 weight portion, the content of sodium alginate is 10-35 weight portion, the content of rice bran wax is 3-5 weight portion, the content of dibutyl tin laurate is 2-6 weight portion, the content of triethanolamine is 2-9 weight portion, and the content of aluminium oxide is 25-30 weight portion.
In above-mentioned releasing agent, the concentration for the hydrochloric acid solution of modified alta-mud can change in wide scope, and preferably, in hydrochloric acid solution, the concentration of hydrochloric acid is 20-30 % by weight.
In above-mentioned releasing agent, bentonitic calcination condition can be selected in wide scope, but in order to make the bentonite after calcining have more excellent activity, preferably, calcining at least meets the following conditions: calcining heat is 350-400 DEG C, and calcination time is 10-14h.
Present invention also offers a kind of preparation method of the releasing agent for aluminium alloy wheel hub die casting, comprising:
1) be soaked in hydrochloric acid solution after bentonite being calcined, then filter obtained modified alta-mud;
2) by obtained for the mixing of modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent releasing agent.
In above-mentioned preparation method, the concrete kind of organic solvent can be selected in wide scope, as long as other components can be made dispersedly in organic solvent just can, but in order to make the releasing agent obtained, there is more excellent viscosity and resistance to settling, preferably, organic solvent is selected from one or more in ethyl acetate, ethanol and n-hexane.
In above-mentioned preparation method, the concrete content of each component can be selected in wide scope, but in order to make the releasing agent obtained, there is more excellent viscosity and resistance to settling, preferably, relative to the organic solvent of 100 weight portions, the consumption of modified alta-mud is 55-75 weight portion, the consumption of sodium alginate is 10-35 weight portion, the consumption of rice bran wax is 3-5 weight portion, the consumption of dibutyl tin laurate is 2-6 weight portion, the consumption of triethanolamine is 2-9 weight portion, and the consumption of aluminium oxide is 25-30 weight portion.
In above-mentioned preparation method, the concentration of hydrochloric acid solution can change in wide scope, but in order to make bentonite can carry out modification more fully, preferably, in hydrochloric acid solution, the concentration of hydrochloric acid is 20-30 % by weight.
Simultaneously, of the present invention in step 1) in, the actual conditions soaking operation can be selected in wide scope, but modification can be able to fully to make bentonite, preferably, in step 1) in, soak at least satisfied: soaking temperature is 35-45 DEG C, soak time is 6-8h.
In addition, in above-mentioned preparation method, bentonitic calcination condition can be selected in wide scope, but in order to make the bentonite after calcining, there is more excellent activity, preferably, calcining at least meets the following conditions: calcining heat is 350-400 DEG C, and calcination time is 10-14h.
Simultaneously, of the present invention in step 2) in, the actual conditions of mixed processes can be selected in wide scope, but can be mixed fully to make each component, preferably, in step 2) in, mix at least satisfied: mixing temperature is 15-35 DEG C, incorporation time is 30-60min.
Below will be described the present invention by embodiment.In following examples, kinematic viscosity parameter is recorded by capillary tube method.
Embodiment 1
1), after bentonite being calcined 12h at 370 DEG C, then its hydrochloric acid solution (concentration of hydrochloric acid is 25 % by weight) in 40 DEG C is soaked in 7h, then filter obtained modified alta-mud;
2) modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent (weight ratio is 65:25:4:4:5:27:100) are mixed 45min at 25 DEG C and obtain release agent A 1.
Embodiment 2
1), after bentonite being calcined 10h at 350 DEG C, then its hydrochloric acid solution (concentration of hydrochloric acid is 20 % by weight) in 35 DEG C is soaked in 6h, then filter obtained modified alta-mud;
2) modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent (weight ratio is 55:10:3:2:2:25:100) are mixed 30min at 15 DEG C and obtain release agent A 2.
Embodiment 3
1), after 1) bentonite being calcined 14h at 400 DEG C, then its hydrochloric acid solution (concentration of hydrochloric acid is 30 % by weight) in 45 DEG C is soaked in 8h, then filter obtained modified alta-mud;
2) modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent (weight ratio is 75:35:5:6:9:30:100) are mixed 60min at 35 DEG C and obtain release agent A 3.
Comparative example 1
Obtained releasing agent B1 is carried out according to the method for embodiment, unlike, bentonite does not carry out the modification of hydrochloric acid solution.
Comparative example 2
Carry out obtained releasing agent B2 according to the method for embodiment, unlike, step 2) in do not use modified alta-mud.
Comparative example 3
Carry out obtained releasing agent B3 according to the method for embodiment, unlike, step 2) in do not use sodium alginate.
Comparative example 4
Carry out obtained releasing agent B4 according to the method for embodiment, unlike, step 2) in do not use rice bran wax.
Comparative example 5
Carry out obtained releasing agent B5 according to the method for embodiment, unlike, step 2) in do not use dibutyl tin laurate.
Comparative example 6
Carry out obtained releasing agent B6 according to the method for embodiment, unlike, step 2) in do not use triethanolamine.
Comparative example 7
Carry out obtained releasing agent B7 according to the method for embodiment, unlike, step 2) in do not use aluminium oxide.
Comparative example 8
Obtained releasing agent B8 is carried out according to the method for embodiment 1, unlike, bentonite does not carry out calcination processing.
Test example 1
Kinematic viscosity (the η of above-mentioned obtained release agent A 1-A3 and B1-B8 is detected by capillary tube method
1/ cp), and by uncovered for above-mentioned releasing agent be placed in 25 DEG C at place January after carry out observing and detect kinematic viscosity (η
2/ cp), concrete outcome is in table 1.
Table 1
| η 1/cp | η 2/cp | Place pattern after January | |
| A1 | 705 | 789 | Without sedimentation |
| A2 | 713 | 775 | Without sedimentation |
| A3 | 730 | 746 | Without sedimentation |
| B1 | 665 | 1323 | There is sedimentation |
| B2 | 632 | 1345 | There is sedimentation |
| B3 | 641 | 1298 | There is sedimentation |
| B4 | 652 | 1256 | There is sedimentation |
| B5 | 647 | 1276 | There is sedimentation |
| B6 | 612 | 1249 | There is sedimentation |
| B7 | 652 | 1259 | There is sedimentation |
| B8 | 645 | 1147 | There is sedimentation |
Known by above-described embodiment, comparative example and test example, the system of releasing agent provided by the invention is homogeneous, viscosity is suitable, composition not free settling and composition is not oxidizable and then ensure that releasing agent has excellent viscosity all the time.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible combination.
In addition, also can be combined between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. for a releasing agent for aluminium alloy wheel hub die casting, it is characterized in that, described releasing agent contains modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent; Wherein, described modified alta-mud is soaked in hydrochloric acid solution after being calcined by bentonite, then filters and obtains.
2. releasing agent according to claim 1, wherein, described organic solvent be selected from ethyl acetate, ethanol and n-hexane one or more.
3. releasing agent according to claim 1 and 2, wherein, relative to the organic solvent of 100 weight portions, the content of described modified alta-mud is 55-75 weight portion, the content of described sodium alginate is 10-35 weight portion, and the content of described rice bran wax is 3-5 weight portion, and the content of described dibutyl tin laurate is 2-6 weight portion, the content of described triethanolamine is 2-9 weight portion, and the content of described aluminium oxide is 25-30 weight portion.
4. releasing agent according to claim 1 and 2, wherein, in described hydrochloric acid solution, the concentration of hydrochloric acid is 20-30 % by weight;
Preferably, described calcining at least meets the following conditions: calcining heat is 350-400 DEG C, and calcination time is 10-14h.
5. for a preparation method for the releasing agent of aluminium alloy wheel hub die casting, it is characterized in that, comprising:
1) be soaked in hydrochloric acid solution after bentonite being calcined, then filter obtained modified alta-mud;
2) by obtained for the mixing of described modified alta-mud, sodium alginate, rice bran wax, dibutyl tin laurate, triethanolamine, aluminium oxide and organic solvent releasing agent.
6. preparation method according to claim 5, wherein, described organic solvent be selected from ethyl acetate, ethanol and n-hexane one or more.
7. the preparation method according to claim 5 or 6, wherein, relative to the organic solvent of 100 weight portions, the consumption of described modified alta-mud is 55-75 weight portion, the consumption of described sodium alginate is 10-35 weight portion, and the consumption of described rice bran wax is 3-5 weight portion, and the consumption of described dibutyl tin laurate is 2-6 weight portion, the consumption of described triethanolamine is 2-9 weight portion, and the consumption of described aluminium oxide is 25-30 weight portion.
8. the preparation method according to claim 5 or 6, wherein, in described hydrochloric acid solution, the concentration of hydrochloric acid is 20-30 % by weight.
9. the preparation method according to claim 5 or 6, wherein, in step 1) in, described immersion is at least satisfied: soaking temperature is 35-45 DEG C, and soak time is 6-8h;
Preferably, described calcining at least meets the following conditions: calcining heat is 350-400 DEG C, and calcination time is 10-14h.
10. the preparation method according to claim 5 or 6, wherein, in step 2) in, described mixing is at least satisfied: mixing temperature is 15-35 DEG C, and incorporation time is 30-60min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105945213A (en) * | 2016-06-24 | 2016-09-21 | 芜湖黄燕实业有限公司 | Release agent used for wheel hub die-casting mold and preparation method thereof |
| CN105945214A (en) * | 2016-06-24 | 2016-09-21 | 芜湖黄燕实业有限公司 | Release agent used for wheel hub die-casting mold and preparation method thereof |
| CN106001395A (en) * | 2016-06-24 | 2016-10-12 | 芜湖黄燕实业有限公司 | Coating for hub forming mold and preparation method thereof |
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| CN105945213A (en) * | 2016-06-24 | 2016-09-21 | 芜湖黄燕实业有限公司 | Release agent used for wheel hub die-casting mold and preparation method thereof |
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| CN106001395A (en) * | 2016-06-24 | 2016-10-12 | 芜湖黄燕实业有限公司 | Coating for hub forming mold and preparation method thereof |
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