CN103926166A - Method for detecting solvent volatilization rate in V-method casting coating - Google Patents
Method for detecting solvent volatilization rate in V-method casting coating Download PDFInfo
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- CN103926166A CN103926166A CN201410169411.3A CN201410169411A CN103926166A CN 103926166 A CN103926166 A CN 103926166A CN 201410169411 A CN201410169411 A CN 201410169411A CN 103926166 A CN103926166 A CN 103926166A
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- glass plate
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- solvent evaporates
- solvent
- cast paint
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Abstract
The invention discloses a method for detecting solvent volatilization rate in a V-method casting coating. The method comprises the following steps: heating up a drying oven to simulated working temperature; putting a glass plate with an EVA film into the drying oven; drying into constant weight; coating the V-method casting coating on the film and weighing and marking into M; putting the glass plate into the drying oven at 50 DEG C, weighing and marking into M1 after appointed time; continuing to put into the drying oven, weighing at an interval of a period of time, and marking into M2 until constant weight; computing the volatilization rate of the solvent in the coating. According to the detection method disclosed by the invention, a quantitative method is provided for judging the volatilization rate of the solvent in the V-method casting coating, the volatilization rate of the solvent in the V-method casting coating can be effectively detected, the key drying performance of the V-method casting coating can be quantitatively displayed and contrasted specifically, and the production quality control of special casting adopting a V method is facilitated.
Description
Technical field
The present invention relates to a kind of detection method of solvent evaporates speed, relate in particular to the detection method of solvent evaporates speed in a kind of V method cast paint.
Background technology
Can V method cast paint rapid draing be the key factor that affects product quality and production efficiency in low temperature drying situation, and therefore in V method cast paint, the rate of volatilization of solvent just becomes an important technology index of V method cast paint.
In prior art, still not for the detection method of solvent evaporates speed in V method cast paint, be all often the dry speed that depends on staff's working experience, on-the-spot impression and intuitive judgment in production run at the scene and judge coating.But due to each staff's working experience and the difference of intuitive judgment, cause and may have larger difference to the judgement of V method cast paint drying regime, thereby affect the effect of coating in Foundry Production, make the control of the quality of production have certain uncertainty.
Summary of the invention
Technical matters to be solved by this invention is that a kind of rate of volatilization of solvent in specific production environment in various V method cast paints that can quantize to detect will be provided, thereby can make to the drying property of various V method cast paints comparison and the evaluation of quantification, effectively improve the quality of production of V method casting.
The present invention solves the problems of the technologies described above the technical scheme adopting to be:
A method that detects solvent evaporates speed in V method cast paint, the method comprises the following steps:
A. air dry oven is warming up to analog operation temperature, described analog operation temperature is 40 DEG C-60 DEG C;
B. eva film is fixed on flat glass plate, will puts into described air dry oven with the glass plate of film, after being fully dried, glass plate is put into drying basin and be cooled to room temperature, until glass plate constant weight;
C. V method cast paint is diluted to and specifies Baumé degree and be coated on described film, coating thickness is controlled at 0.3～0.4mm, applied rear mensuration now the quality of described glass plate be M;
D. glass plate is put into described drying box timing, after the fixed time, taking out glass plate quality measurement is M1;
E. after, continue described glass plate to put into drying box, take out at set intervals described glass plate quality measurement, until be recorded as M2 after quality constant weight;
F. calculate the rate of volatilization of solvent in coating;
In coating, the computing formula of solvent evaporates speed is:
Solvent evaporates speed (%)=(M-M1)/(M-M2).
Analog operation temperature described in described step a can be 50 DEG C.
Appointment Baumé degree described in described step c can be 75 Baumé degree.
Fixed time described in described steps d can be 5 minutes.
A period of time described in described step e can be half an hour.
The present invention has utilized special EVA (ethene-vinyl acetate copolymer) plastic sheeting and air dry oven to simulate enclosed low temperature drying environment uniquely, and quantize to have embodied the rate of volatilization of solvent in V method cast paint by a series of measurement means, thereby as an important technology index of V method cast paint.
Detection method of the present invention provides quantization method for the rate of volatilization of judging solvent in V method cast paint, can effectively detect the volatility of solvent in V method cast paint, make the drying property of V method cast paint key obtain clear and definite quantification demonstration and comparison, be more conducive to the quality of production control of V method Special Processes of Metal Castings.
Brief description of the drawings
Fig. 1 is the schematic flow sheet that detects a kind of solvent evaporates speed method in V method cast paint.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of method that detects solvent evaporates speed in V method cast paint, its concrete steps are as follows:
A. air dry oven is warming up to 50 DEG C, and adopt mercury thermometer Tc, make it remain on 50 DEG C ± 1 DEG C, this temperature is analog operation temperature, also can get a temperature between 40 DEG C-60 DEG C, depending on different working environments and requirement, as long as in the process of solvent evaporates speed, choose same analog operation temperature in detecting and comparing each coating;
B. eva film is fixed on flat glass plate, by the drying box of putting into 50 DEG C with the glass plate of film, after oven dry, glass plate is put into drying basin and be cooled to room temperature and weigh, repeatable operation is until glass plate constant weight;
C. V method coating is diluted to 75 Baumé degree (certainly, the dilute concentration of coating also can be selected other normal concentration, in process as long as solvent evaporates speed in detecting and comparing each coating, choose same prescribed concentration), be coated on described film, coating thickness is controlled at 0.3～0.4mm, applied rear mensuration now the quality of glass plate be M;
D. glass plate is put into 50 DEG C of drying boxes and with manual time-keeping, after 5 minutes, (certainly, in this step, in described drying box, the dry time also can be chosen other fixed time, such as 3 minutes, 8 minutes etc.In the process of solvent evaporates speed in detecting and comparing each coating, this step is chosen the same fixed time) taking-up glass plate quality measurement is M1;
E. after, continue glass plate to put into drying box, (certainly, also can choose other time period the drying time in the drying box described in this step, such as 20 minutes, 40 minutes etc. per half an hour.As long as can detect and compare out described glass plate in constant weight state.) take out glass plate quality measurement, until be recorded as M2 after quality constant weight;
F. calculate the rate of volatilization of solvent in coating.
In coating, the computing formula of solvent evaporates speed is:
Solvent evaporates speed (%)=(M-M1)/(M-M2)
In formula: the quality (g) of glass plate after M-applied coating
The quality (g) of M1-the applied glass plate after coating after analog operation temperature is dried the fixed time (in the present embodiment for having applied 50 DEG C of bakings of glass plate after coating quality after 5 minutes)
Quality (g) that M2-the applied glass plate after coating dries to constant weight in analog operation temperature (in the present embodiment for having applied the 50 DEG C of quality that dry to constant weight of glass plate after coating)
Detection method of the present invention provides quantization method for the rate of volatilization of judging solvent in V method cast paint, can effectively detect the volatility of solvent in V method cast paint, make the drying property of V method cast paint key obtain clear and definite quantification demonstration and comparison, be more conducive to the quality of production control of V method Special Processes of Metal Castings.
The above; be only the specific embodiment of the present invention, but invention protection domain be not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (6)
1. detect a method for solvent evaporates speed in V method cast paint, it is characterized in that the method comprises the following steps:
A. air dry oven is warming up to analog operation temperature, described analog operation temperature is 40 DEG C-60 DEG C;
B. eva film is fixed on flat glass plate, will puts into described air dry oven with the glass plate of film, after being fully dried, glass plate is put into drying basin and be cooled to room temperature, until glass plate constant weight;
C. V method cast paint is diluted to and specifies Baumé degree and be coated on described film, coating thickness is controlled at 0.3～0.4mm, applied rear mensuration now the quality of described glass plate be M;
D. glass plate is put into described drying box timing, after the fixed time, taking out glass plate quality measurement is M1;
E. after, continue described glass plate to put into drying box, take out at set intervals described glass plate quality measurement, until be recorded as M2 after quality constant weight;
F. calculate the rate of volatilization of solvent in coating;
In coating, the computing formula of solvent evaporates speed is:
Solvent evaporates speed (%)=(M-M1)/(M-M2).
2. a kind of method that detects solvent evaporates speed in V method cast paint according to claim 1, is characterized in that: the analog operation temperature described in described step a is 50 DEG C.
3. a kind of method that detects solvent evaporates speed in V method cast paint according to claim 1, is characterized in that: the appointment Baumé degree described in described step c is 75 Baumé degree.
4. according to the method for solvent evaporates speed in the detection V method cast paint described in claim 1,2 or 3, it is characterized in that: the fixed time described in described steps d is 5 minutes.
5. according to the method for solvent evaporates speed in the detection V method cast paint described in claim 1,2 or 3, it is characterized in that: a period of time described in described step e is half an hour.
6. the method for solvent evaporates speed in detection V method cast paint according to claim 4, is characterized in that: a period of time described in described step e is half an hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169411.3A CN103926166A (en) | 2014-04-25 | 2014-04-25 | Method for detecting solvent volatilization rate in V-method casting coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410169411.3A CN103926166A (en) | 2014-04-25 | 2014-04-25 | Method for detecting solvent volatilization rate in V-method casting coating |
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| CN103926166A true CN103926166A (en) | 2014-07-16 |
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| CN201410169411.3A Pending CN103926166A (en) | 2014-04-25 | 2014-04-25 | Method for detecting solvent volatilization rate in V-method casting coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908350A (en) * | 2017-01-22 | 2017-06-30 | 共享装备股份有限公司 | Coating Baume degrees automatic measurement system and measuring method |
| CN107356492A (en) * | 2017-06-20 | 2017-11-17 | 巴斯夫上海涂料有限公司 | Solvent volatilization measuring method and its application |
| CN113389784A (en) * | 2021-06-30 | 2021-09-14 | 上海大学 | Intelligent desolventizing and pressurizing device and method for self-lubricating joint bearing gasket |
Citations (2)
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| WO1998055556A1 (en) * | 1997-06-04 | 1998-12-10 | The B.F. Goodrich Company | Low volatile organic solvent based adhesive |
| CN103645115A (en) * | 2013-12-18 | 2014-03-19 | 成都菲斯特化工有限公司 | Measurement method for volatile amount of micro-molecular organic matters of plastic additive |
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2014
- 2014-04-25 CN CN201410169411.3A patent/CN103926166A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998055556A1 (en) * | 1997-06-04 | 1998-12-10 | The B.F. Goodrich Company | Low volatile organic solvent based adhesive |
| CN103645115A (en) * | 2013-12-18 | 2014-03-19 | 成都菲斯特化工有限公司 | Measurement method for volatile amount of micro-molecular organic matters of plastic additive |
Non-Patent Citations (4)
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| 杨帆等: ""V法铸造涂料干燥性能的研究"", 《特种铸造及有色合金》 * |
| 肖莹: ""V法铸造涂料性能的研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
| 许强龄: "《现代表面处理新技术》", 31 May 1994, 上海：上海科学技术文献出版社 * |
| 赵溶，李远才等: ""V法铸造涂料性能检测方法及其评价"", 《中国机械工程学会铸造分会第十一届消失模与V法铸造学术年会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908350A (en) * | 2017-01-22 | 2017-06-30 | 共享装备股份有限公司 | Coating Baume degrees automatic measurement system and measuring method |
| CN107356492A (en) * | 2017-06-20 | 2017-11-17 | 巴斯夫上海涂料有限公司 | Solvent volatilization measuring method and its application |
| CN113389784A (en) * | 2021-06-30 | 2021-09-14 | 上海大学 | Intelligent desolventizing and pressurizing device and method for self-lubricating joint bearing gasket |
| CN113389784B (en) * | 2021-06-30 | 2022-03-04 | 上海大学 | Intelligent desolventizing and pressurizing device and method for self-lubricating joint bearing gasket |
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Application publication date: 20140716 |
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