Hydroxyethyl acrylate
Storage Conditions for Hydroxyethyl Acrylate
Hydroxyethyl acrylate (HEA) is a highly reactive acrylic monomer whose storage conditions prioritize chemical stability and safety. Improper storage may lead to spontaneous polymerization, quality deterioration, or even safety incidents.
The following are the core storage requirements:
1. Temperature and Light
Temperature: It is recommended to store in a cool environment, with an ideal storage temperature between 2°C and 25°C. High temperatures and direct sunlight must be avoided.
Reason: Increased temperature significantly accelerates its polymerization rate, posing a risk of self-polymerization even with the presence of an inhibitor.
2. Inhibitor
Type: Hydroxyethyl acrylate is typically inhibited with MEHQ to suppress free radical polymerization during storage and transportation.
Maintaining Effectiveness: To ensure the inhibitor remains effective, excessive contact with air (oxygen) must be avoided. Oxygen depletes MEHQ, reducing its inhibitory effect. Therefore, nitrogen padding in the container is crucial.
3. Container and Atmosphere
Container: Containers made of stainless steel, phenolic resin lining, or polyethylene should be used.
Atmosphere: Containers should be padded with nitrogen to maintain an inert environment and minimize contact with oxygen.
Sealing: Containers must always be kept tightly sealed.
4. Storage Environment
Ventilation: The warehouse or storage area must have good ventilation.
Away from Ignition Sources and Incompatibilities: The storage area should be away from heat sources, sparks, open flames, and incompatible materials such as strong oxidizing agents, strong acids, and strong bases.
5. Shelf Life
Provided all the above storage conditions are followed, the typical shelf life of hydroxyethyl acrylate is 6 to 12 months from the date of manufacture. Before use, the product's appearance and specifications should be checked to ensure it has not polymerized or deteriorated.
(typically 2-10%).
Hydroxyethyl Acrylate (HEA) - Application Overview
Hydroxyethyl acrylate (HEA) serves as a lubricant detergent additive in the oleochemical industry and as a dehydration agent for electron microscopy in the electronics industry. In the textile industry, it is used for producing fabric adhesives. Furthermore, it functions as a chemical reagent in analytical chemistry and is applied in water-miscible embedding agents, among other uses.
HEA can copolymerize with a wide range of monomers including acrylic acid and its esters, acrolein, acrylonitrile, acrylamide, methacrylonitrile, vinyl chloride, and styrene. The resulting copolymers are used for treating fibers to enhance their water resistance, solvent resistance, wrinkle resistance, and waterproof properties. These polymers are also employed in manufacturing high-performance thermosetting coatings, synthetic rubber, and lubricant additives. In the field of adhesives, copolymerization with vinyl monomers improves bond strength. For paper processing, HEA is used in producing coating acrylic emulsions, enhancing the water resistance and strength of the paper.
HEA acts as a reactive diluent and crosslinking agent in radiation-curing systems and can also serve as a resin crosslinker, as well as a modifier for plastics and rubber
It is primarily used in the manufacture of thermosetting acrylic coatings, UV-curable acrylic coatings, photosensitive coatings, adhesives, textile treatment agents, paper processing chemicals, water stabilizers, and polymeric materials. A key characteristic of HEA is its ability to significantly enhance product performance even when used in small quantities.
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