CN104181062A - Test method for solidity of lamp coating - Google Patents
Test method for solidity of lamp coating Download PDFInfo
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- CN104181062A CN104181062A CN201310202035.9A CN201310202035A CN104181062A CN 104181062 A CN104181062 A CN 104181062A CN 201310202035 A CN201310202035 A CN 201310202035A CN 104181062 A CN104181062 A CN 104181062A
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Abstract
A test method for the solidity of a lamp coating comprises the steps: firstly, placing the lamp coating at a preset first temperature and a preset humidity to reach the test time, namely firstly carrying out a constant-temperature and constant-humidity test on the lamp coating; simulating a state that the lamp coating is used in a humid and hot environment; then placing a lamp at a second temperature to reach the test time, namely carrying out a high temperature aging test on the lamp coating, and simulating a state of the lamp coating after long-term use; finally, allowing the lamp coating after the high temperature aging test to sand at the room temperature; finally carrying out a scratching test on the lamp coating after the standing; and then detecting whether the lamp coating after the scratching test is normal, and thus completing the lamp coating solidity test. Therefore, the lamp coating solidity can be detected, the problem whether the lamp coating stripping appears after long-term use can be detected, and a basis is provided for selection of an excellent spraying process in product development.
Description
Technical field
The present invention relates to light fixture coating measuring technology, particularly relate to a kind of light fixture coating hardness method of testing.
Background technology
Coating obtains a wide range of applications at aspects such as electric power, motor, electrical equipment, electronics, aviation, atomic energy, space technologies.
Coating (coating) is that coating once applies obtained solid-state continuous film, is in order to protect, insulation, and the objects such as decoration, coat metal, fabric, the plastic sheet on the matrixes such as plastics.Coating can be gaseous state, liquid state, solid-state, and the matrix conventionally spraying as required determines kind and the state of coating.
Have different addresses according to the kind of coating used, as the coating of priming paint is called prime coat, the coating of finish paint is called top coat layer.General coating gained coating is thinner, and about 20-50 micron, high build paint once can obtain the thick 1 millimeter of above coating that reaches.In order to protect, insulation, the objects such as decoration, coat the plastic sheet on the matrixes such as metal, fabric, plastics.
The hardness of coating comprises two aspects: the hardness (solidity) of organic coating and ground metal surface; The cohesion (cohesion) of organic coating itself, the hardness intensity of organic coating and metal surface is the bigger the better; Both actings in conjunction of paint film of the tough and tensile densification of coating itself just can better stop that extraneous corrosion factor is to corrosion of metal, thereby reach the good protection to metal.Coating can not firmly be attached to metal surface, more intact coating does not have effect yet; The cohesion of coating own is poor, and paint film easily ftractures and be ineffective.Both determine the hardness of coating jointly above, form the key factor that determines coating protection effect.
Coating process is also widely used in illumination field at present, and coating can be protected lamp outer casing and suffers dust storm and rainwater erosion except being possessed beautiful decoration effect, also having concurrently, keeps light fixture insulating property, guarantees light fixture safe handling effect.Industry to light fixture coating after prolonged application, whether there will be coating variable color, come off etc. causes lamp outer casing insulating property cannot meet request for utilization extremely, but there is no effective method of testing, cannot check out the quality of lamp outer casing coating after long-term use.The qualitative factor that affects lamp outer casing coating comprises coating material, coating quality, coating thickness, production environment and baking time etc., and the hardness of light fixture coating is a key factor of Testing lamp casing insulation performance.
Summary of the invention
Based on this, be necessary to provide a kind of light fixture coating hardness method of testing that can detect light fixture coating hardness and whether meet long-term working strength requirement.
A kind of light fixture coating hardness method of testing, comprises the following steps:
Light fixture after spraying is placed to and reaches the test duration under default the first temperature and default humidity;
Whether the light fixture coating of detection after the first temperature and default humidity measurement be normal, if so, light fixture is placed in to the second temperature down to reaching the test duration;
Whether the light fixture coating of detection after the second temperature test be normal, if so, light fixture is placed under normal temperature and leaves standstill, and utilize pencil-lead to scratch test to light fixture coating;
Whether the light fixture coating that detection process scratches test is normal.
In an embodiment, described the first temperature is 60 DEG C-80 DEG C therein, and the time of described constant temperature and humidity test is 22-26 hour.
In an embodiment, described default humidity is 75%RH-95%RH therein.
In an embodiment, described the second temperature is 80 DEG C-120 DEG C therein, and the time of described high temperature test is 220-260 hour.
In an embodiment, described light fixture leaves standstill at least 2 hours at normal temperatures therein.
In an embodiment, the described step of utilizing pencil-lead to scratch test to light fixture coating is specially therein:
Get the pencil that exposes pen core;
One end of pencil and thrust meter are fixed together;
Make to be fixed on pencil-lead and light fixture coating surface angle at 45 ° on thrust meter;
Utilize thrust meter to apply power to pencil, make pencil-lead at light fixture coating surface paddling.
In an embodiment, described pencil length is 50mm therein, and described pencil-lead length is 5mm.
In an embodiment, described thrust meter applies the thrust of 10N to pencil therein.
In an embodiment, described pencil-lead is at Si Ge edge, the upper and lower, left and right of light fixture coating and central paddling therein.
In an embodiment, described pencil-lead is at four edge corners and the central paddling of light fixture coating therein.
Above-mentioned light fixture coating hardness method of testing is first placed light fixture coating to reach the test duration under default the first temperature and default humidity, first light fixture coating is carried out to constant temperature and humidity test.Simulation light fixture coating is used under hygrothermal environment.Again light fixture is placed in to the second temperature down to reaching the test duration, light fixture coating is carried out to high temperature ageing test, the state of simulation light fixture coating after long-term use.Finally the light fixture coating after high temperature ageing test is left standstill at normal temperatures.Finally the light fixture coating after leaving standstill is scratched to test.Then whether normally detect the light fixture coating scratching after test, thereby complete the test of light fixture coating hardness.Thereby can detect the hardness of light fixture coating, and after long-term use, whether there will be the problems such as light fixture disbonding, select the spraying coating process of high-quality for product development foundation is provided.
Brief description of the drawings
Fig. 1 is the process flow diagram of light fixture coating hardness method of testing.
Embodiment
As shown in Figure 1, be the process flow diagram of light fixture coating hardness method of testing.
Whether generally can extract light fixture after 5 sprayings, require under the illumination environment of 200Lux, detecting light fixture coating to be detected has the inhomogeneous grade of spraying abnormal, selects light fixture coating smooth uniformly for test.Light fixture coating to be detected is carried out to Ordinary fruit quality inspection, confirm the situation before the test of light fixture coating, ensure the validity of follow-up test.
Especially, test environment illumination is 200 ± 10Lux.
A kind of light fixture coating hardness method of testing, comprises the following steps:
Step S110 is placed to the light fixture after spraying to reach the test duration under default the first temperature and default humidity.
The first temperature is 60 DEG C-80 DEG C, and the time of described constant temperature and humidity test is 22-26 hour.
Default humidity is 85%RH ± 10%RH.
Particularly, the light fixture after spraying is placed in sweat box, the temperature setting of sweat box is set to 60 DEG C-80 DEG C, i.e. the first temperature.Preferably, the first temperature is 70 DEG C.Humidity is 75%RH-95%RH, and preferably, humidity is 85%RH.Test duration, preferably, the test duration was 24 hours generally between 22-26 hour.Step S110 simulates hygrothermal environment, and light fixture coating is carried out to constant temperature and humidity test.
In an embodiment, the concrete steps of carrying out damp and hot test for light fixture coating are therein: light fixture is placed in sweat box, the temperature of sweat box is made as to 70 DEG C, set the test duration is 24 hours simultaneously, and the humidity in sweat box is made as 85%RH.Start-up temperature case carries out the damp and hot test of constant temperature and humidity, reaches after the test duration execution step S120.
The use state of step S110 for simulating light fixture coating under hygrothermal environment.
Step S120, whether the light fixture coating of detection after the first temperature and default humidity measurement be normal, if so, light fixture is placed in to the second temperature down to reaching the test duration.
The second temperature is 80 DEG C-120 DEG C, and the time of described high temperature test is 220-260 hour.
Particularly, to carrying out Ordinary fruit quality detection through the light fixture coating of constant temperature and humidity test, extremely, stop this test if occur.If normal, the light fixture carrying out after damp and hot test is placed in sweat box, the temperature in sweat box is made as 80 DEG C-120 DEG C, i.e. the second temperature.Preferably, the second temperature is 100 DEG C.Test duration, preferably, the test duration was 240 hours generally between 20-260 hour.Step S120, for simulation hot environment, carries out high temperature ageing test to light fixture coating.
In an embodiment, the concrete steps of light fixture coating being carried out to high temperature ageing test are therein: the light fixture after spraying is coated with and is placed in sweat box, the temperature of sweat box is made as to 100 DEG C, set the test duration is 240 hours simultaneously.Start-up temperature case carries out high temperature ageing test.Reach after 240 hours test durations execution step S130.
Step S130, whether the light fixture coating of detection after the second temperature test be normal, if so, light fixture is placed under normal temperature and leaves standstill, and utilize pencil-lead to scratch test to light fixture coating.
Light fixture coating after high temperature ageing test and the damp and hot test of carrying out the second temperature, after Ordinary fruit quality detects, if occur extremely, stops this test, if normal, need to leave standstill at normal temperatures and after at least 2 hours, just can carry out next step test.Be that light fixture leaves standstill at least 2 hours at normal temperatures.
The step of utilizing pencil-lead to scratch test to light fixture coating is specially:
1. get the pencil that exposes pen core.
2. one end of pencil and thrust meter are fixed together.
3. make to be fixed on pencil-lead and light fixture coating surface angle at 45 ° on thrust meter
4. utilize thrust meter to apply power to pencil, make pencil-lead at light fixture coating surface paddling.
In the present embodiment, pencil length is 50mm, and described pencil-lead length is 5mm.
Thrust meter applies the thrust of 10N to pencil.
In an embodiment, pencil-lead is at Si Ge edge, the upper and lower, left and right of light fixture coating and central paddling therein.
In yet another embodiment, pencil-lead is at four edge corners and the central paddling of light fixture coating.
In an embodiment, the concrete steps that scratch test are therein: get a long pencil for 50mm, and the cartridge exposing 5mm of pencil.Pencil and thrust meter are fixed together, and wherein, one end that pencil exposes pen core is free end.Pencil-lead and light fixture coating surface angle at 45 ° after fixing.Then use thrust meter pencil to be applied to the thrust of 10N, the pen core of pencil is scratched at light fixture coating surface.Usually, be chosen in Si Ge edge, upper and lower, left and right and the middle position paddling of light fixture coating.Also there are four edge corners and central paddling in light fixture coating.
Step S140, whether the light fixture coating that detection process scratches test is normal, and records result.
Whether normally generally under illumination 200lux, detect light fixture coating, and record testing result.
After high temperature ageing test, need to carry out conventional Quality Detection to light fixture coating, occur extremely, recording testing result and stopping this test if detect light fixture coating; If it is normal to detect light fixture coating, carry out follow-up humidity measurement.Same, after damp and hot test, need to carry out conventional Quality Detection to light fixture coating, occur extremely, recording testing result and stopping this test if detect light fixture coating; If it is normal to detect light fixture coating, after the light fixture coating after humidity measurement being left standstill at normal temperatures, scratch test.Need in light fixture coating, choose 5 test points owing to scratching test, but in general, as long as once scratch after test, there is extremely will finishing this test in light fixture coating.Therefore, need to carry out record to the detection of the light fixture coating that scratches test under normal temperature.
Above-mentioned light fixture coating hardness method of testing is first placed light fixture coating to reach the test duration under default the first temperature and default humidity, first light fixture coating is carried out to constant temperature and humidity test.Simulation light fixture coating is used under hygrothermal environment.Again light fixture is placed in to the second temperature down to reaching the test duration, light fixture coating is carried out to high temperature ageing test, the state of simulation light fixture coating after long-term use.Finally the light fixture coating after high temperature ageing test is left standstill at normal temperatures.Finally the light fixture coating after leaving standstill is scratched to test.Then whether normally detect the light fixture coating scratching after test, thereby complete the test of light fixture coating hardness.Thereby can detect the hardness of light fixture coating, and after long-term use, whether there will be the problems such as light fixture disbonding, select the spraying coating process of high-quality for product development foundation is provided.
Adopt above-mentioned light fixture coating hardness method of testing, can effectively filter out and cause light fixture coating shedding, affect client and experience and cause lamp outer casing decreasing insulating, threaten the light fixture of the problems such as personal safety may produce difference of hardness after long-term use.Select high-quality coating and coating process for product development foundation is provided, make light fixture coating after long-term use, still there is higher quality level, meet the long-term demand using of client.
Based on above-mentioned all embodiment, the process that adopts above-mentioned light fixture coating hardness method of testing to test a collection of light fixture coating is as follows:
Adopt certain coating and spraying coating process to carry out surface treatment on lamp outer casing surface, then this light fixture metal shell surface coating is carried out to hardness test.It is 24 hours, 65 DEG C, 90%RH humidity measurement that test sample is positioned over to the sweat box condition of carrying out.After humidity measurement completes, whether normally detecting light fixture coating, is if so, the high temperature ageing of 80 DEG C test in 240 hours by the test sample condition of carrying out.Complete after high temperature ageing test, whether normally detect light fixture coating, if so, light fixture is placed to time of repose under normal temperature and be no less than 2 hours, then light fixture coating is scratched to test.Need to choose 5 test points owing to scratching test, after the test of each test point, all need light fixture coating to detect and record result, wherein, extremely stop scratching test scratching to occur detecting in test.To not finding that light fixture coating occurs peeling off extremely, light fixture coating hardness meets the requirements, and can avoid the light guide plate that may occur after long-term use to damage extremely, meets the long-term requirement using of product.
By above-mentioned light fixture coating hardness method of testing, can detect at short notice the light fixture coating of difference of hardness, avoid bringing unnecessary loss to user.Can, by change in design, strengthen the hardness of light fixture coating simultaneously, avoid the too low light fixture coating of hardness to appear on market.Reduce follow-up because the problem that light fixture coating cannot normally be worked may appear in long-term use, reduction after-sales service cost.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a light fixture coating hardness method of testing, comprises the following steps:
Light fixture after spraying is placed to and reaches the test duration under default the first temperature and default humidity;
Whether the light fixture coating of detection after the first temperature and default humidity measurement be normal, if so, light fixture is placed in to the second temperature down to reaching the test duration;
Whether the light fixture coating of detection after the second temperature test be normal, if so, light fixture is placed under normal temperature and leaves standstill, and utilize pencil-lead to scratch test to light fixture coating;
Whether the light fixture coating that detection process scratches test is normal.
2. light fixture coating hardness method of testing according to claim 1, is characterized in that, described the first temperature is 60 DEG C-80 DEG C, and the time of described constant temperature and humidity test is 22-26 hour.
3. light fixture coating hardness method of testing according to claim 1, is characterized in that, described default humidity is 75%RH-95%RH.
4. light fixture coating hardness method of testing according to claim 1, is characterized in that, described the second temperature is 80 DEG C-120 DEG C, and the time of described high temperature test is 220-260 hour.
5. light fixture coating hardness method of testing according to claim 1, is characterized in that, described light fixture leaves standstill at least 2 hours at normal temperatures.
6. light fixture coating hardness method of testing according to claim 1, is characterized in that, the described step of utilizing pencil-lead to scratch test to light fixture coating is specially:
Get the pencil that exposes pen core;
One end of pencil and thrust meter are fixed together;
Make to be fixed on pencil-lead and light fixture coating surface angle at 45 ° on thrust meter;
Utilize thrust meter to apply power to pencil, make pencil-lead at light fixture coating surface paddling.
7. light fixture coating hardness method of testing according to claim 6, is characterized in that, described pencil length is 50mm, and described pencil-lead length is 5mm.
8. light fixture coating hardness method of testing according to claim 6, is characterized in that, described thrust meter applies the thrust of 10N to pencil.
9. light fixture coating hardness method of testing according to claim 6, is characterized in that, described pencil-lead is at Si Ge edge, the upper and lower, left and right of light fixture coating and central paddling.
10. light fixture coating hardness method of testing according to claim 6, is characterized in that, described pencil-lead is at four edge corners and the central paddling of light fixture coating.
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| CN201310202035.9A CN104181062A (en) | 2013-05-27 | 2013-05-27 | Test method for solidity of lamp coating |
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| CN201310202035.9A CN104181062A (en) | 2013-05-27 | 2013-05-27 | Test method for solidity of lamp coating |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021480A (en) * | 2015-07-07 | 2015-11-04 | 安徽福斯特汽车部件有限公司 | Test method of aluminium alloy wheel film hardness |
| CN109228706A (en) * | 2018-07-10 | 2019-01-18 | 东莞市德诚精密拉链科技有限公司 | A kind of preparation method with temperature-sensitive font pulling |
| CN110132756A (en) * | 2019-06-04 | 2019-08-16 | Oppo广东移动通信有限公司 | The test method of shell |
-
2013
- 2013-05-27 CN CN201310202035.9A patent/CN104181062A/en active Pending
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021480A (en) * | 2015-07-07 | 2015-11-04 | 安徽福斯特汽车部件有限公司 | Test method of aluminium alloy wheel film hardness |
| CN109228706A (en) * | 2018-07-10 | 2019-01-18 | 东莞市德诚精密拉链科技有限公司 | A kind of preparation method with temperature-sensitive font pulling |
| CN110132756A (en) * | 2019-06-04 | 2019-08-16 | Oppo广东移动通信有限公司 | The test method of shell |
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Application publication date: 20141203 |