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What are the raw materials of plastic products in life? Resin? Or oil?
- Molded plastic: a resin mixture for molding. Such as thermosetting plastics.Laminated fabric: a fabric impregnated with a resin that can be laminated and pressed together to form an integral material.Injection, extrusion and blow molding plastics: - refers to a mixture of resins that can melt and flow at the cylinder temperature and rapidly harden in the mold. Such as general thermoplastic plastics.Casting liquid: a liquid resin mixture that can be poured into a mold and hardened into a definite shape in case of no pressure or little pressure. Such as MC nylon.Reaction injection mold plastic: generally refers to liquid raw material, pressurized injection mold cavity, so that the reaction of curing, finished products. Such as polyurethane.s
What are the safe plastics to drink water from?
- There are many types of plastic containers which are used to bottle up mineral or drinking water. As someone who has sound knowledge of plastics materials and application, I would say that those plastic bottles made from high or low density Polyethylene (HDPE or LDPE) and Polycarbonate (PC) are safe for storing drinking water for consumption, as it's inert and no chemical reaction with water. But, avoid those bottles made of Polyvinyl chloride (PVC) as it's unstable when heated over sometime and gives off small amounts of chlorine which may react with the stored water for drinking. This may be bad for health when the water is consumed regularly. So, choose your drinking water bottle wisely. However, if you're uncertain about any plastic bottles, the best way is to choose the drinking water in glass bottles properly sealed.s
Arguments FOR plastic surgery?
- Learn okorder.com/s
Is it possible to make plastics out of vegetable oils?
- They make plastic out of corn. Mostly all To-go boxes are made from corn .s
Question about plastics in the environment...?
- Because: *Plastics block sewages which causes flooding. *Plastics because faunas think it's food so they eat it and die from ingestion. For instance, jelly-fish eating sea creatures think that plastic bags are jellyfishes. So, when they eat it they get sick and eventually die. In the long run, they become critically endangered to extinct. *Plastic is not biodegradeable. It lasts thousands of years before it's broken apart by sunlight. Some even claim that all the plastic we have produced so far is still with us. *Because plastic is not biodegradeable, and hard to recycle, it is already one of the world's biggest garbage in volume. Well, that's some of the reasons I could come up now. But I'm definite that plastic poses far worse problems than those.s
Is it bad to microwave the frozen food plastic?
- If you're talking about a frozen dinner, with the plastic covering, you need to ventilate the plastic. If you didn't, the heat would have to where to escape and it could explode. As far as melting food in plastic (such as a Ziploc bag), the plastic could melt, and perhaps burn and start a fire. And that would not be good!s
When asked, Paper or plastic?
- You do not take any, you bring a re-usable bag that you buy at some stores, you put all of your groceries inside. You cannot chose paper because it is made out of trees, you cannot chose plastic because they injure the animals and pollute the planet when people just throw them outside.s
how is plastic made???
- plastic is the name for a lot compounds so i will thell you the way for the one compound i know.it´s PVC(polyvinylchloride). it is made from acetylene. first acetylene is reduced to ethylene by hydrogenation. HC(triple bond)CH -----H2/Pd---> H2C=CH2 and then one hydrogen atom is substituted by chlorine to get PVC H2C=CH2 + Cl2 -----> --(HC-CHCl)-- (the result is polymerisation)s
How do pipes work
- Description: Pipes are used for indoor water collecting.It is very important .So it is necessary for you to familiar with how do pipes work.The following are the some information r...
How do you thaw frozen pipes
- During winter months, water inside plumbing can freeze and, in the worst cases, crack or burst pipes. Not all frozen pipes break, however, and you can prevent major problems by car...
what is organic fertilizer
- Organic fertilizers are fertilizer compounds that contain one or more kinds of organic matter. The ingredients may be animal or vegetable matter or a combination of the two. It is ...
what happens when pipes freeze
- Water expands when it freezes.If it freeze then the water pipe will be broken. Most piping systems allow for expansion and contraction, but only to a certain point. Once there is n...
What is the best fertilizer
- The agriculture industry relies heavily on the use of fertilizer. But what is the best fertilizer, and how does it work?Yes,NPK fertilizer is the best fertilizer in many expert'...