How to make the temperature of the high and low temperature test chamber quickly enter a stable state?
How to make the temperature of the high and low temperature test chamber quickly enter a stable state?
First of all, do you know what the purpose of the high and low temperature test chamber is? Upon receiving approval from the superiors for the procurement of high and low temperature test chambers, you will need to understand some of its performance parameters and uses. In order to reasonably choose the ideal instrument. The following is a small series of Haotian equipment to analyze some of its main uses and performance parameters for you to choose.
The high and low temperature test chamber is an instrument for high temperature and low temperature test. Put the product into the test box, set the high temperature and low temperature conditions to be tested and the number of high and low temperature cycles to test the product. After the product has passed the high and low temperature aging and high and low temperature cycle test, evaluate the performance change of the high and low temperature test chamber. And reliability.
When the high and low temperature test chambers are returned to the test, it may be difficult to stabilize the high temperature and low temperature, or it may take a long time to stabilize. What should I do? Is there any way to make the temperature of the high and low temperature test chambers fast and constant? . The total temperature tolerance of the high and low temperature test chambers of 2 ° C or 3 ° C is determined by taking into account the absolute error of the measurement, the slow temperature change and the temperature change in the workspace, but in order to maintain the relative humidity within the specified tolerance range, The temperature difference between any two points in the working space must be maintained within a small range at any time. If the temperature difference exceeds 1K, the humidity condition will not meet the requirements. In order to maintain the specified humidity, the temperature should be maintained for a short period of time. At 0.5 ° C, the temperature of the test sample should be stable between 3 ° C, and stabilized by the following method: 1. After putting the test sample into the high and low temperature test box, adjust the temperature of the box to 25 ° C and keep until the test sample reaches The temperature is stable; 2. Before placing the test sample in the high and low temperature test chamber, place the high and low temperature box sample in another box; Dear customers, the above two methods for making the high and low temperature test box fast and stable Which one is used, the temperature stabilization time is reached, and the relative humidity must be within the limits of the specified standard atmospheric conditions for the test. The sample is in the high and low temperature circulation tank. After stabilization, the relative humidity inside the tank should rise to not less than 95% and the ambient temperature is 25 °C.
If you find any doubts or difficulties in the process of using high and low temperature test boxes, please contact us in time with the professional manufacturer of high and low temperature test box, Dongguan Haotian, we provide users with high and low temperature test box products and maintenance, calibration, etc. service.
Furniture edge sealing glue can be divided into three categories according to the different base materials:
EVA (ethylene-vinyl acetate copolymer resin) base material hot melt adhesive, this hot melt adhesive can be divided into two types with filler and without filler. Using EVA as the base material is the most common production technology for furniture edge sealing adhesives, and its main limitation is poor heat resistance. The ambient temperature of panel furniture sealed with EVA hot melt adhesive shall not be higher than 120°C;
POL YAMIDE (polyamide) based hot melt adhesive, this hot melt adhesive has good heat resistance and fast curing characteristics, the main disadvantage is that it is expensive.
HMPU (polyurethane) base material hot melt adhesive, it is a kind of hot melt adhesive with the best performance, and it is the guarantee of high quality sheet edge sealing. It is expensive and requires special usage.
The performance of furniture edge sealant
1. Viscosity of furniture edge sealant
The viscosity of furniture edge sealing glue does not directly reflect the performance of the glue. In general, the higher the viscosity of the furniture edge sealant, the better its initial tack strength, but the worse the coating performance. Low-viscosity hot melt adhesives have a smaller amount of glue and better wetting properties. Some hot melt adhesives with low viscosity and fast curing speed may also have high initial tack strength.
2. Density of furniture edge sealing glue
The density of furniture edge sealant is generally 0.95-1.6g/cm3, and its density depends on the amount of filler.
3. Softening point and use temperature of furniture edge sealing glue
The softening point is an indicator of the heat resistance of the furniture edge sealant. The higher the softening point, the less likely the furniture edge sealant will melt. At the same time, softening point is also an important aspect to measure the temperature resistance of panel furniture.
4. The opening time of the furniture edge banding glue and the feeding speed of the edge banding machine
Furniture edge sealant is widely used in the market because of its solvent-free, water-resistant, and environmental-friendly features.
Edgebander Glue,Edge Banding Glue,Pur Edgebanding Glue,Edge Banding Hot Melt Glue
GUANGZHOU INTERNET WOOD GLUE MANUFACTURER CO. LTD. , https://www.hotmeltadhesiveiwg.com