Transparent yellow acrylic plexiglass

Acrylic is methyl acrylic acid methyl ester, after a long time of reaction of the oxidation and Sun and rain, organic glass surface metamorphic transformations. General initiator usually azobis isobutyronitrile or benzoyl peroxide, the aggregate formula is as follows: usually a period of induction period, polymerization rate is zero. During this period, no viscosity changes in System. Then start polymerization, monomer conversion increased when conversion rates at about 20 per cent respectively, aggregates significantly faster, called automatic acceleration. If not properly controlled system is subject to storms gather and make performance worse. After a conversion rate of 80 per cent respectively, aggregates significantly reduced stopped reactions, needs to raise the temperature to facilitate the polymerization reaction completely. Methyl methacrylate polymerization occurs during automatic acceleration was mainly due to the heat of polymerization of overcoming difficulties, system overheating, plexiglass will turn yellow. During the polymerization process polymerization heat removal is the largest of the polymerization process. Long-term storage of plexiglass preferably with a protective film, isolation of the outside air, plexiglass processed stored in a dry place, need to be sealed with protective film, when users use the glass processing products, pay attention to the corners and rub! CPVC plate strong corrosion resistance: the most suitable corrosion-proof equipment. Easy processing, cutting, welding, bending are very simple. High strength, high stiffness and high hardness, good electrical insulation and good chemical stability; out low water absorption; easy to bond and to paint.
CPVC sheet increased irregularity of molecular bonds, polarity increases, increases the solubility of resin, chemical stability increases, thus increasing the material's heat resistance, acid, alkali, salt, antioxidant, corrosion, improves the mechanical properties of numerical heat distortion temperature. Compared with ordinary PVC, with excellent resistance to high temperature, excellent corrosion resistance, good dimensional stability, ease of processing, excellent flame retardant characteristics.
Plastic variable yellow is plastic of a basic characteristics, plastic variable yellow of reasons many, but which most important of a reasons is UV of effect, PBT material also not exception, due to in lighting of process type in the, lamp tube will produced UV, UV radiation plastic makes it variable yellow, certainly we in plastic in the can added some anti-UV of material in, but this just extended it variable yellow of time, time long has it also is to yellow of.