Dioctyl Adipate is one of the most extensively used plasticizers in plastics/rubber processing. It has comprehensive properties, such as high plasticizing efficiency, low volatility, UV-resisting property, water-extracting proof, cold-resisting property, and also of good softness and electric property.
Chemical properties:
Usage:
Used as an excellent cold-resistant Plasticizer for polyvinyl chloride, which can impart excellent low-temperature softness to products.
1.Insoluble in water, soluble in methanol, ethanol, ethyl ether, acetone, acetic acid, chloroform, ethyl acetate, petrol, toluene, mineral oil, vegetable oil and other organic solvents, slightly soluble in ethylene glycol.
2.As cold plasticizer, it can be usedc in polyvinyl chloride, polyethylene copolymer , polystyrene, cellulose nitrate, ethyl cellulose and synthetic rubber as an typical cold plasticizer,with high efficiency, small heat discoloration; it can give product a good softness at low temperature and light fastness
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The ultra-clean workbench can only protect the reagents that are operated in the workbench from contamination, and does not protect the staff. The biosafety cabinet is a vacuum system that can effectively protect the staff.
In order to maintain the technical performance of the workbench, the initial setting, daily operation and maintenance of the equipment are more important. If you despise these things, the performance of the equipment will drop and the ultra-clean workbench will not run in good condition. Therefore, the operator needs to pay attention to the daily maintenance work of the ultra-clean workbench.
For the daily maintenance work of the ultra-clean workbench, some manufacturers gave six suggestions. First, pay attention to the tightness. The ultra-clean workbench adopts a structure in which the positive pressure contaminated area is completely surrounded by the negative pressure zone; secondly, before the sterilization of the workbench by fumigation, in order to prevent leakage, the whole machine should be sealed with the "soap bubble" method. Thirdly, the wind speed of the working area is measured by an anemometer periodically (usually every two months). If the requirements of the technical parameters are not met, the fan supply voltage can be adjusted.
Fourth, when the fan voltage is increased, if the wind speed in the working area still does not meet the requirements of the technical parameters, the air supply high-efficiency filter must be replaced. When the air supply high-efficiency filter is replaced, the exhaust high-efficiency filter must also be replaced. After the replacement, apply the dust particle counter to check whether the four perimeter seals are good. If there is any leak, seal it with sealant. Fifth, the fan does not require special maintenance, but a regular inspection is recommended.
Sixth, you need to pay attention to these matters when replacing the high efficiency filter. For example, when replacing the air/exhaust high-efficiency filter, it should be stopped. Firstly, the workbench should be sterilized. When the high-efficiency filter is updated, the filter paper should be protected from damage during special unpacking, handling and installation. The filter paper is damaged.
In addition, before installation, the new high-efficiency filter should be pointed at the bright spot to visually check whether the high-efficiency filter is leaky due to transportation and other reasons. If there is a loophole, it cannot be used. At the time of installation, attention was also paid to the fact that the arrow mark on the high-efficiency filter was consistent in the direction of the wind exit of the workbench.
When tightening the rivet, the force should be uniform, that is, to ensure that the high-efficiency filter is stable and reliable, and that the high-efficiency filter is prevented from being deformed and leaking. After replacement, the dust particle counter should be used for leak detection, especially for scanning inspection around the high-efficiency filter frame.
The manufacturer also said that the air inlet of the ultra-clean workbench is under the back or the front side. The metal mesh cover has a common foam plastic sheet or non-woven fabric to block large particles of dust. It should be inspected and removed frequently, such as foaming aging. , replace it in time.
In addition to the air inlet, if there is a leaking pore, it should be tightly sealed, such as tape, cotton, glued paper, etc. The metal mesh cover on the front of the workbench is a super filter. The super filter can also be replaced. If it is used for a long time, the dust particles are blocked, the wind speed is reduced, and when the aseptic operation cannot be guaranteed, it can be replaced with a new one.
It should be reminded that the length of service life of the ultra-clean workbench is related to the cleanliness of the air. In the temperate zone, the clean bench can be used in general laboratories. However, in tropical or subtropical regions, in areas with atmospheric pollen or dust, the clean bench should be placed in a good indoor room with double doors. . Under no circumstances should the inlet hood of the clean bench be placed against an open door or window to avoid affecting the life of the filter.
A colorless, transparent, oily liquid with a slight odor. Do not dissolve in water, soluble in organic solvents such as ethanol, ether, acetone, acetic ACID.
The ultra-clean workbench is a one-way flow type air purification device that provides a local dust-free and sterile working environment. It is widely used in scientific research and production departments that require local clean and sterile working environment, such as medical and health, bio-pharmaceutical, food, medical science experiment, optical, electronic, sterile room experiment, sterile microbial test, plant tissue culture and so on.