UV accelerated aging test chamber

ZN-TDUV accelerated aging test chamber

1、 Purpose:：

Simulate the ultraviolet radiation of sunlight, observe the degree of yellowing or fading resistance of the test piece after being exposed to ultraviolet radiation in the machine for a period of time, and provide reference for the preparation of chemical raw materials. This product can also be used for EPROM consumption in the electronics industryExcept for functionality.

Suitable industries: leather, plastic, handicrafts, outdoor lights, toys, shoes, corrugated paper, rubber, glue, paint, etc.UV aging complies with ASTM-D1148 standard.

2、 Product Introduction:

This test chamber is manufactured according to ASTM D1148, and its function is to simulate the ultraviolet radiation and heat of sunlight. The sample is exposed to ultraviolet radiation and temperature inside the machine, and after a period of time, the degree of yellowing resistance of the sample is observed. The stained gray mark can be used as a reference to determine the grade of yellowing The color of the product may change due to exposure to sunlight during use or the impact of the container environment during transportation, resulting in defects in the product.

This test chamber can meet the requirements of: Plastic laboratory light source exposure test method

Fluorescent UV lamps GB/T16422.3-1997

Plastic laboratory light source exposure test method Part 3

Fluorescent UV lamps ISO 4892-3:2006

UV rapid aging test for automotive exterior materials SAE J2020:2003

Plastic UV exposure test method ASTM D4329-05

3、 Product Overview:

This product uses a fluorescent UV lamp that best simulates the UV spectrum in sunlight, and combines temperature control, humidity supply, and other devices to simulate factors such as high temperature, high humidity, condensation, and dark rain cycles caused by sunlight (UV) that can cause color change, brightness, intensity decrease, cracking, peeling, powdering, oxidation, and other damage to materials. At the same time, the synergistic effect between UV light and moisture weakens or fails the material's single light resistance or single moisture resistance, making it widely used for evaluating the material's weather resistance performance. The equipment has the characteristics of providing good sunlight U simulation, low maintenance cost, easy use, automatic control operation, high automation degree of the test cycle, good light stability, and high reproducibility of test results.

3、 Structure and Material:

1. Test box space: 450 × 1170 × 500mm (width, depth, height)

2. Dimensions approximately: 550 × 1310 × 1480mm (width, depth, height)

3. Unit material: High quality stainless steel both inside and outside

4. Sample rack: Aluminum alloy frame type base frame visual panel

5. Controller: Color touch screen programmable controller

6. Radiation tube: UVA-340

7. Power supply residual current circuit breaker control circuit overload short circuit alarm, over temperature alarm, water shortage protection

4Technical parameters:

1. Temperature range: RT+10 ℃~70 ℃

2. Humidity range: ≥ 90% RH

3. Temperature uniformity: ± 2 ℃

4. Temperature fluctuation: ± 2 ℃

5. Center distance inside the lamp tube: 70mm

6. Center distance between test sample and lamp tube: 50 ± 3mm

7. Irradiance: adjustable within 1.0W/m2

8. Adjustable light, condensation, and spray test cycles

9. Lamp: L=1200/40W, 8 pieces (UVA service life of over 1600h)

10. Controller: Color Touch Screen Korea (TEMI880)

11. Temperature control method: PID self-tuning SSR control

12. Standard specimen size: 75 × 290 × 5mm

14. Effective irradiation area: 900 × 210mm

15. Ultraviolet wavelength: UVA range is 315-400nm;

16. Test time: 0~999H (adjustable)

17. Radiation blackboard temperature: 50 ℃~70 ℃

18. Standard sample rack: 24 sets

19. The unit has automatic sprinkler function

5、 Structure description:

1. The box is made of CNC equipment, with advanced technology, smooth lines, and beautiful appearance

2. The material of the box is 1.2mm thick 304SUS high-grade stainless steel

3. The air duct inside the box adopts a single circulation system, with an imported axial flow fan, which improves the air flow brightness and heating capacity, and significantly improves the temperature uniformity inside the test box

4. Lamp tube: dedicated UV lamp tube, two rows of 8 tubes in total, 40W/tube

5. Lamp lifespan: over 1600h

6. Water source and consumption: approximately 8 liters/day of tap water or distilled water

8. The heating method is an inner tank sink type heating, with fast heating and uniform temperature distribution

9. The lid of the box is a double-sided flip cover, which can be easily and freely closed

10. Automatic replenishment of water level in the inner tank to prevent damage caused by empty burning of the heating tube

11. The sample holder is made of stainless steel or aluminum alloy

12. The bottom of the unit is fixed with high-quality PU movable wheels

13. The drainage system uses a U-shaped sedimentation device for drainage

14. The surface of the test sample is parallel to the plane of the ultraviolet lamp

15. The sprinkler system is equipped with automatic nozzles and adjustable water pressure inside

6、 Safety protection device:

ultraviolet:

The first-order optical reaction is not sensitive to temperature changes, however, the speed of the second-order reaction that follows is closely related to temperature changes. Generally speaking, as the temperature increases, the reaction rate will accelerate. Therefore, in the UV exposure test process, temperature control becomes important. More importantly, it is necessary to match the test temperature used in the accelerated test with the highest temperature encountered by the material in practical applications. The temperature during the UV process in the device is set to any point between 50 ℃ and 70 ℃, depending on the level of illumination and indoor ambient temperature. The temperature regulation of the equipment is controlled by a controller with microcomputer calculation function to command a series of systems such as air heaters and water heaters inside the equipment.

Moisture:

As the temperature increases, the destructive power of moisture on materials will sharply increase. Therefore, temperature control is the most basic requirement in humid environments. Furthermore, to achieve an acceleration effect, it is necessary to maintain a high temperature environment during the humid process. So the temperature during the condensation process is set to any point between 40 ℃ and 60 ℃.

7、 Heating system:

1. Adopting U-shaped titanium alloy high-speed heating electric heating tube

2. Temperature control and lightingofIndependent system

3. The temperature control output power is calculated by a microcomputer to achieve high-precision and high-efficiency electricity efficiency

4. The heating system has anti overheating function:

5. The blackboard temperature is controlled by a color touch screen programmable controller, and the output power is calculated by a microcomputer with PID self-tuning. The monitoring uses a standard PT100 blackboard temperature sensor.

6. The temperature of the sink is controlled by a color touch screen program and a Korean temperature controller. The sink is located at the bottom of the box and is equipped with an electric water heater. During the testing process, there is a dark condensation process that requires the box to generate saturated water vapor at a relatively high temperature. When the water vapor encounters a relatively cold surface of the sample, it will condense on the surface of the sample.

7 sprinkler system

1. Spray uniformity adjustment Utilize the manual control function of the controller Observe the spray status while the door is open

2. Spray status monitoring: The machine is equipped with a spray device The sprinkler system simulates temperature fluctuations and rainwater erosion during rainfall There are several nozzles in total. Spray evenly When to spray. How long does the spray last All are freely set by customers

Philips UV (A) ultraviolet lamp tube

8Box structure features:

lThe box body is made with full CNC technology, advanced technology, smooth lines, and beautiful appearance;

lThe whole box is made of SUS304 high-grade stainless steel plate;

lThe panel type sample rack is composed of high-grade aluminum plates, which are easy to install and disassemble.

Standard specimen size: 75mm * 140mm, 48 pieces, 75mm * 280mm, 24 pieces. (Non standard sizes can be customized)

Schematic diagram of sample suspension in the illuminated area of the front sample rack

lThe outer shell of the test chamber is equipped with door opening devices at each opening, making it easy to open.

lFor ease of movement, casters are installed at the bottom of the instrument, and the position of the testing machine is fixed with a U-shaped ring.

Requirements for equipment placement site:

1Environmental temperature: 5 ℃~+28 ℃ (average temperature within 24 hours ≤ 28 ℃)

2Environmental humidity: ≤ 85% R? H

3Power requirement: AC 220V ± 10% 50Hz single-phase three wire system

4Compliant with standard: Ultraviolet test for photovoltaic (PV) modules GB/T19394-2003GB/T2423.24-1995 Simulated ground solar radiation test method

★ Anti UV aging test Plastic aging test Rapid UV aging test Main items:

ASTM G154-06 Cycle 1 、 ASTM G154-06 Cycle 2~6, 8 (non-metallic materials)

ASTM D4674 REV A-2002 Method IV ASTM G154-06 Cycle 7 (Non Metallic Materials)

ASTM D4329-05 Cycle A, ISO 4892-3 Method A Cycle 1 (Plastics)

ASTM D4329-05 Cycle B, C, ASTM D5208-01 (Plastic)

ISO 4892-3:2006 cycle 5, 6、BS 2782 Part 5:1995、 (Plastic)

ISO 4892-3:2006 cycle 2, GB/T 16422.3-1997 (plastics)

ASTM D4587-05 Cycle 4 、ASTM D4587-05 Cycle 1~3 、EN ISO 11507:2001 Method A (涂料)

AATCC 186-2007 Option 1, AATCC 186-2007 Option 3 (Textiles)

ASTM D1148-07a (Rubber)

ISO 11507:2007 (Coatings and Varnishes)

SAE J2020-2003 (Automotive Exterior Parts)

Photovoltaic UV aging box light source

1The center distance of the lamp is 70mm. Referring to the size and length of solar modules in the photovoltaic industry, it is calculated to use 8 lamp tubes

2Using imported UVA-340 fluorescent ultraviolet lamps as the light source, accelerated weather resistance tests were conducted on the material by simulating the ultraviolet radiation in natural sunlight to obtain the results of the material's weather resistance. The light source has a lifespan of 8000H (hours);

3The temperature can be automatically monitored, and the light irradiance can be controlled by adjusting the voltage of the lamp through a voltage regulator to stabilize the irradiance at a determined level, while also controlling the test time.

4STT-R series platinum resistance temperature sensor; It is enclosed in a stainless steel shell and filled with thermal conductive and sealing materials. It is compact in size and has excellent waterproof and shockproof performance, reaching IP67.

UVA Lamp (Detailed Explanation)

Abbreviated as UVA:It is ultraviolet light with a wavelength of 320-400nm. Long wave ultraviolet radiation has an impact on clothing and human skinpenetrationFar stronger than medium wave ultraviolet radiation, it can reach deep into the dermis and affect the epidermismelaninIt works, causing skin melanin deposition, darkening the skin, and playing a role in defending against ultraviolet rays and protecting the skin. Therefore, long wave ultraviolet rays are also known as the "tanning segment". Although long wave ultraviolet radiation does not cause acute inflammation of the skin, its effect on the skin is slow and can accumulate for a long time, which is one of the causes of skin aging and serious damage.

Ultraviolet radiation is divided into:Near ultraviolet UVA,Far ultraviolet radiationUVB and ultra short ultraviolet UVC. The impact of ultraviolet radiation on human skinpenetrationThe degree is different. The shorter the wavelength of ultraviolet rays, the greater the harm to human skin.shortwaveUltraviolet rays can penetrate the dermis, while medium waves can enter the dermis.

UV accelerated aging test chamber