Poliéster sería una resina adecuada para macetas de bonsai. Baja resistencia a agentes climáticos, pierde brillo se deteriora por exposicióna a la intemperie. UV.
UV absorbers are typically used in polyester resins at levels ranging from 0.1 to 1.0 parts per hundred parts resin. The higher levels would be typical in the more UV susceptible resin systems such as the halogenated types. The UV absorbers most commonly used in unsaturated polyester resins fall into two classes, either (1) substituted benzophenones like Cyasorb UV-9 (American Cyanamid) and Uvinol 400 (Ciba-Geigy), or (2) substituted benzotriazoles like Tinuvin (Ciba-Geigy) and Cyasorb-UV5411 (American Cyanamid).
3.2.1.2 Polyesters
The polyester resin is a viscous liquid resin resulting from the condensation reaction between a glycol and an unsaturated dibasic acid. This polymer contains a double bond between its carbon atoms (C
C) and is characterized by its clear pale yellow color. It is classified as one of the most versatile synthetic copolymers. To polymerize this resin, it is mixed with its proper catalyst. There are two types of a polyester resin as standard laminating systems in the composite industry: Orthophthalic (ortho) and Isophthalic (iso) polyester resin. The orthophthalic resins are composed essentially of orthophthalic acid and constitute a good basic resin for various uses at low cost. This type of resin contains between 35% and 45% of styrene and are used in applications that do not require high temperature, high corrosion resistance, or high mechanical properties. On the other hand, the isophthalic polyester resins contain between 42% and 50% of styrene and are better suited for corrosion environments and elevated temperatures and have greater mechanical properties. Moreover, they are characterized by their performance, low cost, and extreme processing versatility.
C) and is characterized by its clear pale yellow color. It is classified as one of the most versatile synthetic copolymers. To polymerize this resin, it is mixed with its proper catalyst. There are two types of a polyester resin as standard laminating systems in the composite industry: Orthophthalic (ortho) and Isophthalic (iso) polyester resin. The orthophthalic resins are composed essentially of orthophthalic acid and constitute a good basic resin for various uses at low cost. This type of resin contains between 35% and 45% of styrene and are used in applications that do not require high temperature, high corrosion resistance, or high mechanical properties. On the other hand, the isophthalic polyester resins contain between 42% and 50% of styrene and are better suited for corrosion environments and elevated temperatures and have greater mechanical properties. Moreover, they are characterized by their performance, low cost, and extreme processing versatility.
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