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返回Testing Services
- EU RED Network Security Standard EN 18031
- Wireless and communication detection
- Mobile communication product certification
- Bluetooth BQB Product Certification
- FM/AM Product Certification
- WiFi Product Certification
- Wireless charging product certification
- Interphone product certification
- Base station certification
- SAR testing
- Receiver Product Certification
- 5G NR Product Certification
- UWB Product Certification
- Internet of Things authentication
- Electrical performance testing
- EMS testing - radiation anti-interference testing system (including radar waves)
- EMS Testing - Electrostatic Discharge
- EMS Test - Transient Conducted Immunity Test
- EMS Testing - Portable Transmitter Immunity
- EMS Test - High Current Injection (BCI) Test
- EMS test - low-frequency magnetic field anti-interference test
- EMI Testing - Transient Conducted Emissions Testing System
- EMI testing - low-frequency magnetic field emission
- EMI Test - Radiation Emission Test
- EMI Test - Conducted Emissions Test
- Automotive Electronic Testing
- Automotive ELV&VOC
- Reliability testing
- Temperature shock test
- Vibration testing
- Temperature shock/cold and hot shock test
- Instrument panel/instrument panel three comprehensive vibration test
- Comprehensive vibration test of door inner panel III
- Sunvisor Three Comprehensive Vibration Test
- Spoiler Three Comprehensive Vibration Test
- Three comprehensive vibration tests of car front and rear bumpers
- Three comprehensive vibration tests for lamp housing/lampshade
- Comprehensive vibration test of outer circumference three
- Automotive metal material testing
- Performance testing of automotive lighting fixtures
- Rapid temperature change test
- Vibration
- Common issues with vibration testing
- Common issues with fatigue testing
- Common issues with high and low temperature testing
- Conducted Interference (CE) - Suzhou Lixun Standard
- Conducted Immunity Test (CS) - Suzhou LCS Standard
- Electromagnetic Radiation Tolerance Test (RS) - Suzhou LCS Standard
- Electrical Fast Pulse Withstand Test (EFT) - Suzhou LCS Standard
- Voltage flicker test - Suzhou LCS standard
- Introduction to PFAS Testing
- MOSH/MOAH Mineral Oil Testing Service
- MOSH/MOAH Mineral Oil Testing and Certification Report Service
- Automotive ELV&VOC
- Consumer Product Testing Services - WEEE Chapter
- Consumer Product Testing Services - CA 65
- Consumer Product Testing Services - SDS Section
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- Consumer Product Testing Services - REACH Restricted Substances Section
- Consumer Product Testing Services - REACH SVHC Section
- Consumer Product Testing Services - RoHS Chapter
- Ecological textile testing
- Leather Footwear Inspection
- Food contact material testing
- Testing of toys and baby products
- Hazardous substance testing
- Other tests - pencil hardness test
- Other tests - Alcohol abrasion test
- Other tests -100 grid test
- Other tests - Paper tape wear test
- Other inspections - bending tests
- Other tests - tensile testing
- Other tests - Drum drop test
- Other tests - Voltage withstand test
- Mechanical testing - Packaging compression test
- Mechanical testing - Drop test
- Mechanical inspection - mechanical shock test
- Mechanical testing - Three comprehensive vibration tests
- Mechanical testing - Vibration testing
- Climate environment testing - Xenon lamp aging test
- Climatic environment testing - UV ultraviolet test
- Climate Environmental Testing - Low Pressure Test
- Climatic environment testing - IP level (waterproof and dustproof test)
- Climatic Environmental Testing - Salt Spray Test
- Climatic Environmental Testing - Walkthrough Temperature Test
- Climatic environment test - cold and hot shock test
- Climate environment testing - rapid temperature change test
- Climatic environmental testing - alternating damp heat test
- Climate environment testing - Temperature cycling test
- Climatic Environmental Testing - High Temperature Testing
- Climatic Environmental Testing - Low Temperature Testing
- Reliability testing
- Inspection of ship lighting fixtures
- COI Index Test for Medical Indoor Lighting
- Lamp safety inspection
- Luminaire energy efficiency testing
- EMC testing of lighting fixtures
- Integral Ball Laboratory
- Photobiology Experiment
- Light distribution test
- Lamp aging test
- Lamp IP waterproof
- Lamp performance testing
- Lamp reliability testing
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Climatic Environmental Testing - High Temperature Testing
Test the project
High temperature test
Reference standards
GB/T 2423.2-2008; IEC 60068-2-2: 2007
Range of competence
+250°C,1m×1m×1m
High temperature test is a constant high temperature test, usually accompanied by high humidity testing. It is an environmental simulation reliability test that simulates the temperature and humidity environment in which a product is stored and operated, and checks whether the impact on the product after a period of time in this environment is within an acceptable range.
High temperature and high humidity testing is divided into high temperature and high humidity storage and high temperature and high humidity operation. High temperature and high humidity storage is tested when the product is not in working condition. High temperature and high humidity operation is a test conducted on electronic products when they are powered on.
The temperature range for high-temperature testing generally ranges from 40 ℃ to 80 ℃, and the humidity for testing is between 65% and 95%. The specific testing temperature, humidity, and testing time are determined based on different products and the specific needs of the client.
The commonly used standards for high and low temperature testing are generally GB standards with Chinese reports in China, and EN and IEC
standards with English reports in foreign countries.
1、 Purpose of the experiment
Applicability verification: Determine the storage and operational capabilities of the equipment at high temperatures.
Life prediction: Predicting the service life of products by simulating high-temperature environments.
Failure analysis: used for component screening, aging testing, and failure verification.
2、 Test standards
International standards: GJB150.3-86, GB11606.4-89.
Common standards: GB/T2423.2-2001, MIL-STD-883D, MIL-STD-810F, etc.
3、 Test method
Sample preparation: Ensure that the quantity and specifications meet the requirements, and record the initial state.
Equipment selection: Use a high-temperature test chamber to set parameters such as temperature and time.
Experimental process:
Maintain reasonable spacing when placing samples.
Start the device, record temperature and time changes, and regularly check the status of the samples.
After the experiment is completed, the sample is cooled at room temperature.
Data analysis: Evaluate sample performance and reliability, analyze material stability.
4、 Experimental equipment
High temperature chamber: provides a high-temperature environment.
Temperature gauge: measures and monitors the test temperature.
Electrical measurement system: measures electrical performance parameters.
5、 Experimental parameters
Temperature:+30 ℃ to+1000 ℃.
Time: 2 hours to 1000 hours.
Rising rate: According to standard regulations.
6、 Experimental classification
Non heat dissipating sample: temperature gradient, no power supply.
Heat dissipation sample: temperature gradient, test process powered on.
7、 Application Fields
Electronic electrician: household appliances such as refrigerators, washing machines, microwaves, etc.
Automobile: engine shutdown protection, ECU temperature testing, etc.
Aerospace: High temperature adaptability testing for military equipment.
What is high temperature testing? What is the significance of high temperature testing?
Degradable plastics exposed to hot environments may undergo various physical and chemical changes. The length of exposure time and temperature determine the degree and type of changes that occur. A short exposure period to high temperatures is usually sufficient to shorten the induction period of oxidizable degradable plastics, which results in the consumption of antioxidants and plasticizers. Physical properties such as tensile strength, impact strength, elongation, and modulus may undergo changes during the induction period; However, these changes are usually not due to a decrease in molecular weight, but rather a response to temperature changes, such as an increase in crystallinity or a decrease in volatiles, or both occurring simultaneously.
In general, short-term exposure of plastics to high temperatures releases volatile substances such as water, solvents, or plasticizers; Reduce molding stress; Enhance the curing of thermosetting plastics; Improve crystallinity; And cause a color change in the plasticizer or coloring agent, or both. Usually, progressive shrinkage will occur as the volatiles decrease or further polymerization reactions occur. Some plastics, such as PVC, may be affected by loss of plasticizers or changes in the fracture surface of polymer molecular chains. Polypropylene and its copolymers often become very brittle during molecular degradation, while polyethylene becomes soft before its tensile strength and elongation decrease and become brittle. Therefore, it is necessary to study the performance of components and equipment such as plastics, rubber, paints and varnishes, polymer materials, and circuit boards at high temperatures.
High temperature testing is a method used to determine the adaptability of products to storage, transportation, and use in high-temperature climate environments. The severity of the experiment depends on the high temperature and exposure duration. The high-temperature testing of polymer materials such as plastics, rubber, paints, and varnishes mainly includes hot air aging, heat resistance testing, and determination of heat resistance. Hot air accelerated aging refers to the exposure of samples to temperatures higher than the rubber usage environment, in order to achieve the natural aging effect of rubber in a short period of time. Heat resistance test refers to the test in which the sample is exposed to the same temperature changes as the rubber usage environment.
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