Antioxidants are also known as antidegradants. Antioxidants added to polymers during the synthesis process are called stabilizers. Antioxidants are categorized into chemical and physical antioxidants. Chemical antioxidants are divided into antioxidants, anti-ozone agents, anti-fatigue agents, harmful metal inhibitors, and anti-ultraviolet agents, etc. According to the chemical structure: amines, phenols, heterocyclic and other classes, reactive antioxidants.
Physical antioxidants are protective wax, chlorosulfonate gel coatings and so on.
Antioxidant development direction: to reduce high temperature volatilization, surface migration and solvent extraction, and strive to improve the effectiveness of protection and durability.
Amine antioxidants - ketamine
Antioxidant AW: anti-ozone, heat and fatigue aging. Especially suitable for products under dynamic conditions.
Antioxidant RD: Good resistance to heat and oxygen, used for products used under static conditions.
Antioxidant BLE: Effective against heat, oxygen and fatigue aging. Can be used as adhesive.
Amines antioxidants-formaldehyde amines
Antioxidant AH: Excellent anti-heat and oxygen effect, with passivation of copper, iron, manganese and other heavy metal ions.
Antioxidant AP: good anti-heat and oxygen performance.
Amines antioxidants-diaryl secondary amines
Antioxidant A: anti-heat, oxygen, fatigue and light aging, CR both anti-ozone and harmful metal aging properties.
Antioxidant D: resistance to heat, oxygen, flexural cracking and general aging, and slightly better than A, but poor ozone resistance.
Amine antioxidants - diphenylamine class
4,4′-dimethoxydiphenylamine: excellent fatigue aging resistance, can be used in conjunction with anti-D, the dosage of more than 1 part of the frost phenomenon.
Amine antioxidant-p-phenylenediamine class
Antioxidant 4010 (CPPD): "All-purpose antioxidant": significant protection against heat, oxygen, high-energy radiation and copper damage.
Antioxidant 4010NA (IPPD): excellent protection against ozone and flexural fatigue aging, good protection against thermo-oxidative aging and photo-oxidative aging.
Antioxidant DNP (antioxidant DNPD): comprehensive performance, best protection against heat and harmful metals.