Structure The utility model relates to a punch with a v […]
The utility model relates to a punch with a variable core mainly composed of a mold combined substrate, a mold assembly and a mold combination card, a variable core and a punch combination base.
The plate, the punch assembly, the punch combination card, the cavity cutting assembly and the side-cut composite plate are composed.
In order to improve the properties of the plastic, various auxiliary materials such as fillers, plasticizers, lubricants, stabilizers, colorants and the like are added to the polymer to prepare a good plastic.
1. Synthetic resin is the main component of plastics, and its content is generally 40%-100%. Resin is generally considered synonymous with plastic because of the high content of resin and
The nature determines the nature of the plastic. For example, a mixture of polyvinyl chloride resin and polyvinyl chloride plastic, phenolic resin and phenolic plastic. In fact, resin and plastic are different
the concept of. Resin is a raw material polymer that is used not only in the manufacture of plastics, but also as a raw material for coatings, adhesives and synthetic fibers. Except a small amount containing 100%
In addition to the plastic of the resin, most of the plastics need to be added in addition to the main component resin.
2, filler filler, also known as filler, can improve the strength and heat resistance of plastics, reducing costs. For example, adding wood flour to a phenolic resin can significantly reduce costs.
Making phenolic plastics one of the relatively inexpensive plastics while significantly increasing mechanical strength. Fillers can be divided into organic fillers and wood fillers, rags, inorganic fillers such as paper and each
Kinds of textile fibers, such as glass fiber, diatomaceous earth, asbestos, carbon black and the like.
3. Plasticizer Plasticizers improve the plasticity and softness of plastics, reduce brittleness and facilitate the processing of plastics. Plasticizers are usually miscible, non-toxic, odorless, high boiling
Point organic compounds that are stable to light and heat and are commonly used in o-benzoates. For example, when making polyvinyl chloride plastic, if you add more plasticizer, if
Soft polyvinyl chloride plastic can be obtained without adding or adding a plasticizer.