CN1033433C - Special surfactant for precision-investment casting - Google Patents
Special surfactant for precision-investment casting Download PDFInfo
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- CN1033433C CN1033433C CN92102468.1A CN92102468A CN1033433C CN 1033433 C CN1033433 C CN 1033433C CN 92102468 A CN92102468 A CN 92102468A CN 1033433 C CN1033433 C CN 1033433C
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- Prior art keywords
- precision
- special surfactant
- surfactant
- present
- alkyl
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Abstract
The present invention relates to a special surfactant for precision-investment casting, which is prepared from 5 to 20% of alkylphenyl polyvinylethers, 10 to 30 % of sodium alkyl benzene sulfonate, 0.1 to 5% of organic additives, namely dispersed tetrafluoride emulsions, 0.1 to 5 % of inorganic additives, namely sodium chloride, and 40 to 80 % of soft water. Compared with a substitute sold in markets at present, the special surfactant of the present invention has the advantages of big cost performance ratio, convenient use, low cost and stable quality and integrally combines the functions of washing, degreasing, improving the painting properties of a paint and defoaming; the special surfactant is suitable for various production lines for shell making by precision casting.
Description
The present invention relates to a kind of special surfactant for precision-investment casting.
Smart casting industry uses surfactant to be used for to adding in wax-pattern cleaning and the coating, coating is disperseed and wetting and in its surface absorption to wax-pattern, the process for making shell quality there is material impact, at present, various surfactant kinds are various in a jumble, performance is different, undoubtedly essence casting technology is had different-effect, does not up to the present have special surfactant supporting with it.At present the substitute that uses can be divided into nonionic, anion or anionic and nonionic built surfactant by class, and these kinds or performance are dull or lay particular stress on some with the irrelevant performance of smart casting industry technology or cost is higher, function is poor, the quality instability.
The JFC surfactant that the non-ionic surface active agent of process for making shell employing at present typically has the detergent factory, Tianjin to produce.It has the excellent wetting capacity energy, but cleans grease removal, and dispersive property is relatively poor, unstable product quality, cost height.The typical breast of farming in addition 130, combination property is good than the former, but uses inconvenience, and cost is also high.Anion surfactant also is the low kind of cost that is widely adopted, but its performance poor than nonionic mostly, its performance also need improve.
The surfactant of single variety is generally than cloudy, nonionic Compositional type poor performance.Cloudy, nonionic is composite to produce the performance more excellent than single variety, commercially available some such as dish washing detergent is exactly a Compositional type, be used for smart casting process for making shell, its characteristic is the hygienic requirements height, foam is abundant, for essence casting process for making shell is unnecessary, but the dispersion of satisfying process for making shell coating, wetting, the coated aspect of performance is as one wishes not to the utmost again, is necessary so develop a kind of special surfactant for precision-investment casting.
The purpose of this invention is to provide a kind of special surfactant for precision-investment casting, under situation about reducing cost, can provide good washing, grease removal profit temperature, disperse, be coated with performance such as extension, improve aspect precision casting technology technical performance and the product quality more suitable.
Purpose of the present invention can reach by following measure: special surfactant for precision-investment casting contains molten basic phenol polyethenoxy ether, sodium alkyl benzene sulfonate, dispersion tetrafluoro emulsion, sodium oxide molybdena and soft water.Its composition (weight %) is:
(a) 5-20% alkyl phenol polyvinylether, molecular formula is:
Wherein R is C
8-C
14Alkyl, n=8-12 is preferably n=10;
(b) 10-30% sodium alkyl benzene sulfonate, molecular formula is:
Wherein R is C
10-C
14Alkyl;
(c) the 0.1-5% organic additive promptly disperses the tetrafluoro emulsion,
(d) the 0.1-5% inorganic additive is a sodium chloride;
(e) 40-80% soft water.
The present invention will now be further detailed embodiment:
Embodiment 1: the composition of special surfactant for precision-investment casting (weight %) is:
(a) alkyl phenol polyvinyl fluoride ether is 15%, and molecular formula is:
Wherein R is C
8-C
14Alkyl, n=10;
(b) sodium alkyl benzene sulfonate is 20%, and molecular formula is:
Wherein R is C
10-C
14Alkyl;
(c) promptly to disperse the tetrafluoro emulsion be 2% to organic additive;
(d) inorganic additive is a sodium chloride 0.9%;
(e) soft water is 62.1%.
Embodiment 2: the composition of special surfactant for precision-investment casting (weight %) is:
(a) alkyl phenol polyvinyl fluoride ether is 18%, and molecular formula is:
Wherein R is C
8-C
14Alkyl, n=10;
(b) sodium alkyl benzene sulfonate is 15%, and molecular formula is:
Wherein R is C
10-C
14Alkyl;
(c) promptly to disperse the tetrafluoro emulsion be 0.2% to organic additive;
(d) inorganic additive is a sodium chloride 0.2%;
(e) soft water is 66.6%.
Embodiment 3: the composition of special surfactant for precision-investment casting (weight %) is:
(a) alkyl phenol polyvinyl fluoride ether is 10%, and molecular formula is:
Wherein R is C
8-C
14Alkyl, n=10;
(b) sodium alkyl benzene sulfonate is 23%, and molecular formula is:
Wherein R is C
10-C
14Alkyl;
(c) promptly to disperse the tetrafluoro emulsion be 0.4% to organic additive;
(d) inorganic additive is a sodium chloride 2.5%;
(e) soft water is 64.1%.
Advantage of the present invention:
The present invention is the component of anionic and nonionic surfactant and additive compound, the solution surface tension (r when having very low critical micelle concentration (cmc) and critical micelle concentration in aqueous fusion liquidcmc), caused surfactant solution surface and solution internal micellar shape Become, and provide wetting, dispersion, decontamination, the effects such as emulsification to make the coating can be equal on wax-pattern Even absorption. The compound of component intermediate ion type and nonionic surface active agent is owing to form Mixed micelle so that the intermolecular repulsive interaction of ionic surfactant weaken. The opposing party Face is so that the hydrophilic radical in the nonionic surface active agent molecule has polar molecule There is separation to a certain degree at the positive and negative charge center, by dipole ion, to the ionic surface The activating agent ion cluster is directed realizes the electric attraction effect, and this is just than the surface-active of single type The agent micella easily forms, and adsorbs closelyr, and this is just so that coating particle particle in the coating system The surface forms the fine and close charged adsorption layer of absorption surface activating agent, makes coating system more steady Decide, be coated with rear good uniformity, and can surge group towards wax-pattern in the formation of wax-pattern surface, Hydrophilic group becomes hydrophilic because of outside fine and close adsorption layer, and coating is in wax-pattern surface meeting like this Form good absorption, the coated superior performance. Cloudy, nonionic surfactant is inhaled Attached layer is because closely knit, charged, and the while has significantly been reduced surface tension. These reasons can make Coating system is easy to bubble and be difficult to vanish, and another characteristic of the present invention is to adopt organic tetrafluoro Dispersion liquid is so that bubble surface tension force further reduces, thereby foam is vanished very easily rapidly. The coating that makes like this is even, and closely knit, topped property is good, and pore-free can obtain good Processing performance, production high-quality precision castings. This component is compared with the market substitute, has height The ratio of performance to price, it is extremely convenient to use, cost is low, steady quality, collection washing grease removal, Improve that coating is coated with renaturation and the bubble function of going out in one, applicable various Lost Wax Casting shells lifes Produce line.
Claims (1)
1, a kind of special surfactant for precision-investment casting wherein contains APES, and sodium alkyl benzene sulfonate disperses tetrafluoro emulsion, sodium chloride and soft water, it is characterized in that forming (weight %) to be:
5-20% alkyl phenol polyvinylether, molecular formula is:
-H, wherein R is C
8-C
14Alkyl, n=8-12;
The 10-30% sodium alkyl benzene sulfonate, molecular formula is:
, wherein R is C
10-C
14Alkyl;
The 0.1-5% organic additive promptly disperses the tetrafluoro emulsion;
The 0.1-5% inorganic additive is sodium chloride and 40-80% soft water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92102468.1A CN1033433C (en) | 1992-04-20 | 1992-04-20 | Special surfactant for precision-investment casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN92102468.1A CN1033433C (en) | 1992-04-20 | 1992-04-20 | Special surfactant for precision-investment casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1077912A CN1077912A (en) | 1993-11-03 |
| CN1033433C true CN1033433C (en) | 1996-12-04 |
Family
ID=4939667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92102468.1A Expired - Fee Related CN1033433C (en) | 1992-04-20 | 1992-04-20 | Special surfactant for precision-investment casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1033433C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319668C (en) * | 2005-09-16 | 2007-06-06 | 海南三箭科技开发有限公司 | Cast powder for casting high melting point metal and its usage |
-
1992
- 1992-04-20 CN CN92102468.1A patent/CN1033433C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1077912A (en) | 1993-11-03 |
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| CF01 | Termination of patent right due to non-payment of annual fee |