CN201707285U

CN201707285U - Device for testing the film forming performance of paint

Info

Publication number: CN201707285U
Application number: CN2010202008166U
Authority: CN
Inventors: 刘凤仙; 林昌庆
Original assignee: Langfang Nippon Paint Co Ltd
Current assignee: Langfang Nippon Paint Co Ltd
Priority date: 2010-05-18
Filing date: 2010-05-18
Publication date: 2011-01-12
Anticipated expiration: 2020-05-18

Abstract

The utility model relates to a device for testing the film forming performance of paint, comprising a film preparing device with a groove and a film cracking observation light box; the depth of the groove in the film preparing device is increased or decreased from one side to the other side of the film preparing device along the length direction of the groove; the film cracking observation light box is a box body made of glass with scales on the surface and a light-emitting source at the bottom so as to conveniently place the film on the light box to read the thickness at which the film start to crack. The device can obtain the film with gradually changing thickness, indicate the film forming performance of the paint by reading the thickness at which the film start to crack, quickly determine the gap between the actual film forming performance and the target performance of the paint, save the formulation development time, and improve the new product development efficiency.

Description

A kind of device of testing the coating filming performance

Technical field

The utility model relates to a kind of device of testing the coating filming performance, paint film by the preparation gradient thickness, read initial thickness that paint film begins to ftracture and represent the filming performance of coating, make that the filming performance of coating is quantized, especially for the film forming of assessment water paint, and then the device of rapid screening prescription.

Background technology

In the performance index of water paint, filming performance is one of important techniques index.At present in the work of water paint compound design, the developer need use the wet film preparing device to prepare the paint film of many different-thickness, whether ftracture by observing paint film, the thick paint film of 250 μ m that for example makes does not ftracture, the thick paint film cracking of 300 μ m, thereby roughly judge the filming performance of this coating, judge roughly that promptly paint film begins cracking in thickness is the interval of 250-300 μ m, and can't obtain further definite data.Present existing proving installation and method need repeatedly prepare the paint film of different thickness, observe the paint film cracking situation, just can draw the roughly filming performance of coating, and can't the filming performance of coating be quantized.

Therefore, be necessary to develop a kind of proving installation that the water paint filming performance can be quantized, by this type of device, the formulation for coating material developer can be by the paint film (can set the scope of thickness gradual change) that once prepares gradient thickness, by reading the paint film thickness in initial when cracking, compare the filming performance difference of different formulations easily, thus the rapid screening prescription.

The utility model content

The purpose of this utility model provides a kind of easy to use, time saving and energy saving, high efficiency; And can quantize, determine fast the proving installation of formulation for coating material to the coating filming performance.

The device of test coating filming performance provided by the utility model comprises film caster and the paint film cracking observation lamp house that has groove; The degree of depth of described film caster inner groovy along the length direction of groove by a side of film caster to the opposite side increasing or decreasing; Described paint film cracking observation lamp house is the casing of being made by glass, and its surface is provided with scale, and light emitting source is arranged at the bottom, with convenient paint film is placed the film thickness that reads the paint film cracking position on the lamp box.

According to device provided by the utility model, preferably, the described film caster that has groove is made by stainless steel or glass; More preferably, the length of described groove is 25cm, and width is 10cm.

Further, according to device provided by the utility model, it is the general supporting use of wet film preparing device of 10cm that the described film caster that has groove can be made into groove width, above-mentioned general wet film preparing device is placed on the top of described groove, change the scope of thickness gradual change by the general wet film preparing device that adopts different-thickness, the scale on described lamp box surface is set according to the gradual change scope of the paint film thickness of described film caster preparation.In a specific embodiment of the present utility model, the gradual change scope of the film thickness that the described film caster that has groove prepares is 0～350 μ m, if with this film caster and thickness is the general supporting use of wet film preparing device of 100 μ m, then the gradual change scope of Zhi Bei film thickness can become 100～450 μ m by 0～350 original μ m.

In addition, according to device provided by the utility model, also can be in groove the parallel paint film of preparing requirement simultaneously, with the convenient filming performance of more multiple coating simultaneously.After using the described film caster that has groove to make the paint film of gradient thickness, can put into temperature, the humidity environment film forming of setting, taking-up is placed on the described paint film cracking observation lamp house, because the thickness of paint film changes in gradient equably continuously, can read the thickness of paint film cracking.When the film caster that will have groove and the general supporting use of wet film preparing device prepared above-mentioned paint film, the scale during the initial cracking of the paint film that is read on lamp box added that the thickness of the general wet film preparing device that is adopted is the cracking thickness of paint film reality.The thickness of the initial cracking of paint film made of coating by the record different formulations reaches the purpose of filming performance of the coating of rapid screening different formulations.

Compared with prior art, the advantage of the device of test coating filming performance provided by the utility model is:

(1) only need once make film, just can observe the film forming situation of paint film when different thickness position, the thickness when directly reading the initial cracking of paint film position quantizes the filming performance of coating, rapid screening formulation for coating material, save the prescription development time, improve new product development efficient;

(2) film caster that has a groove provided by the utility model can with the general supporting use of wet film preparing device of different-thickness, coating is made the wet film of different-thickness scope, satisfy the design needs of different film thicknesses;

(3) by device provided by the utility model, can prepare the paint film of multiple coating simultaneously, the paint film that acquisition prepares under the identical operations condition is with the filming performance of convenient more multiple coating.

Description of drawings

Structural representation when Fig. 1 uses with general wet film preparing device is supporting for the film caster that has groove in the device provided by the utility model, wherein 1 expression has the film caster of groove, and 2 represent general wet film preparing device;

Fig. 2 is the structural representation of paint film cracking observation lamp house 3 in the device provided by the utility model, and the lamp box surface is provided with scale;

When Fig. 3 carries out filming performance test among the following embodiment 1 for using device provided by the utility model, the floor map of the cracking position of the paint film that employing 1# prescription makes, wherein scale value is represented the thickness (unit is μ m) of paint film, and grid is represented the degree of paint film cracking; Paint film is thick more, and cracking degree is big more, and grid is big more.

Embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments; but; the utility model is not limited to following examples; identical with the utility model apparatus structure; to have the stainless steel of groove or film caster that glass is made changes into by other materials and making; all be a kind of distortion of the present utility model, all should think within the utility model protection domain.

The filming performance of embodiment 1 test benzene emulsion is to determine the optimum amount of coalescents

Suppose that compound design requires to be: thickness is the wet film of 200 μ m, does not ftracture in 5 ℃ low temperature environment.

Table 1 (unit: mass parts)

Sequence number	Raw material	The 1# prescription	The 2# prescription	The 3# prescription	Remarks
							1	Water	30	30	30
2	Thickening agent	0.5	0.5	0.5
						3	Color stuffing	42	42	42	Titanium white, porcelain earth etc.
4	Emulsion	25	25	25	Benzene emulsion

5	Other auxiliary agents	2	2	2	Defoamer, freeze-point depressant etc.
						6	Coalescents	0.3	0.8	1.3	TEXANOL
	Add up to	99.8	100.3	100.8

Having illustrated with the coalescents of difference amount and other components of same amount in the table 1 is three kinds of coating that prescription is made, wherein said coalescents consumption is 0.3 mass parts, 0.8 mass parts, 1.3 mass parts, described three kinds of coating are dropped in successively a darker end of the groove of film caster as shown in Figure 1, the long 25cm of described groove, wide 10cm.At the uniform velocity move as shown in Figure 1 wet film preparing device from the darker end of groove to the other end then, the low temperature environment of the wet film that obtains being put into 5 ℃ maintains.After treating the drying varniss film forming, the paint film for preparing is placed on the situation of observing paint film cracking above the lamp box, as seen from Figure 3, thickness minimizing along with paint film, the degree of paint film cracking is more and more littler, grid diminishes until disappear (the expression paint film does not ftracture), and the thickness of the scale on the lamp box when showing the prepared paint film of coating that adopts the 1# prescription and beginning to ftracture is 140 μ m, and the Total Test result is as follows:

The 1# prescription: paint film begins cracking in the position of 140 μ m thickness

The 2# prescription: paint film begins cracking in the position of 190 μ m thickness

The 3# prescription: paint film does not ftracture

Consider economic benefit and filming performance, can determine that 2# prescription (consumption of coalescents is 0.8 mass parts) is near the requirement of Design of Coatings Formulation, therefore, the developer can further dwindle the amount ranges of coalescents, the addition that is coalescents in the next round test can be respectively 0.9 mass parts and 1.1 mass parts, thereby reduced the test number (TN) of debugging prescription, improved work efficiency.

In like manner, when the film forming efficiency of the coating that the coalescents of different formulations makes is adopted in screening, adopt more also can assess between the filming performance of the filming performance of the coating that the emulsion of different formulations makes or different coating by this device.

Claims

1. device of testing the coating filming performance, it is characterized in that: this device comprises film caster and the paint film cracking observation lamp house that has groove; The degree of depth of described film caster inner groovy along the length direction of groove by a side of film caster to the opposite side increasing or decreasing; Described paint film cracking observation lamp house is the casing of being made by glass, and its surface is provided with scale, and light emitting source is arranged at the bottom, with convenient paint film is placed the film thickness that reads the paint film cracking position on the lamp box.

2. device according to claim 1 is characterized in that: the described film caster that has groove is made by stainless steel or glass.

3. device according to claim 2 is characterized in that: the length of described groove is 25cm, and width is 10cm.

4. device according to claim 3 is characterized in that: the described film caster that has groove can be the supporting use of general film caster of 10cm with width.

5. device according to claim 4 is characterized in that: the scale that described lamp box surface is set according to the gradual change scope of the paint film thickness of described film caster preparation.