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Now the eyes are made of petroleum resin?
2024-04-26
Is the spectacle lens used by people now made of petroleum resin or natural resin? In fact, this problem is very simple, that is, people make the simple problem a little more complicated with the rumor. It is not difficult to find that there is a big difference between lens resin and petroleum resin.
Resin. It is a hydrocarbon (hydrocarbon) secretion from a variety of plants, especially the pine and cedar plants. Because of its special chemical structure and can be used as this latex paint and glue is valued. It is a mixture of various polymer compounds, so it has different melting points. Resins can be divided into natural resins and synthetic resins. There are very many types of resin, which are widely used in people's light industry and heavy industry, and can often be seen in daily life, such as plastics, resin glasses, coatings, etc. Resin lens is the use of resin as raw material chemical processing synthetic polished lens.
Petroleum resin. There are two kinds of petroleum resins that we contact more: 1. C5 petroleum resin 2. C9 petroleum resin. Petroleum resin is actually a newly developed chemical product in recent years. Because of its low price, good miscibility, low melting point, water resistance, ethanol resistance and chemicals, it can be widely used in rubber, adhesives, coatings, paper, printing ink and other industries and fields.
The answer can be obtained from the above two definitions. The material used for the lenses of glasses is called resin, and there are natural and chemical synthesis. The latter chemical synthesis, as the name implies, is actually extracted from petroleum and then synthesized, but this does not mean that this kind of resin is called petroleum resin. No confusion here. Let's look at the petroleum resin. Products made of petroleum resin generally have no requirements for the light-passing effect. According to the characteristics of the target product, the material of the petroleum resin is determined.
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