Composition of plastic :
The plastic we usually use is not a pure substance, it is made up
of many materials. Wherein polymer polymerization
Substance (or synthetic resin) is the main component of plastics,
in addition, in order to improve the performance of plastics, but
also to add in the polymer
Auxiliary materials, such as fillers, plasticizers, lubricants,
stabilizers, colorants, etc., can become plastics with good
performance.
1. Synthetic resin
Synthetic resin is the most important component of plastics, and
its content in plastics is generally 40% to 100%. Due to the high
content,
And the nature of the resin often determines the nature of the
plastic, so people often regard the resin as a synonym for plastic.
For example clustering
Vinyl chloride resin is confused with polyvinyl chloride plastic,
and phenolic resin is confused with phenolic plastic. In fact,
resin and plastic are two different
The concept. Resin is an unprocessed primitive polymer that is used
not only in the manufacture of plastics, but also in coatings,
adhesives, and coatings
Raw materials for synthetic fibers. In addition to a very small
part of plastics containing 100% resin, the vast majority of
plastics, except for the main group
In addition to the resin, other substances need to be added.
2. Packing
Fillers, also known as fillers, can improve the strength and heat
resistance of plastics and reduce costs. For example, add phenolic
resin
The addition of wood flour can greatly reduce the cost, making
phenolic plastics one of the cheapest plastics, while also
significantly improving mechanical strength.
Fillers can be divided into organic fillers and inorganic fillers,
the former such as wood powder, rags, paper and various fabric
fibers, the latter such as
Glass fiber, diatomaceous earth, asbestos, carbon black, etc.
3, plasticizer
Plasticizers can increase the plasticity and softness of plastics,
reduce brittleness, and make plastics easy to process and form.
Plasticizers are generally
High boiling point organic compounds that can be miscible with
resins, non-toxic, odorless, stable to light and heat, the most
commonly used are phthalates
Class. For example, when producing polyvinyl chloride plastics, if
more plasticizers are added, soft polyvinyl chloride plastics can
be obtained, if not added or
Add less plasticizer (dosage <10%), then hard polyvinyl chloride
plastic.
4. Stabilizer
In order to prevent the synthetic resin from being decomposed and
destroyed by light and heat during processing and use, it is
necessary to extend the service life
Add a stabilizer to the plastic. Commonly used are stearate, epoxy
resin and so on.
5. Coloring agent
Colorants can make plastics have a variety of bright, beautiful
colors. Organic dyes and inorganic pigments are commonly used as
colorants.
6. Lubricant
The role of the lubricant is to prevent the plastic from sticking
to the metal mold during molding, and at the same time make the
surface of the plastic smooth and beautiful.
Commonly used lubricants are stearic acid and its calcium magnesium
salt.
In addition to the above additives, flame retardants, blowing
agents, antistatic agents, etc., can also be added to the plastic
to meet different needs
Please.
FAQ :
Q:Are you manufacturer?
A: Yes, We are manufacturer. We have factory, and design team, we
design the machine according the customer product list.
Q:What can we provide for you ?
A: ERW Carbon Steel Tube Mills, Square & Rectangle Pipe Mill, Oil &
Natural Gas Pipe Production Line, Slitting & Cut-to-length Line,
Cold Roll Forming Mill, Steel Pipe Automatic Packing Machine,
Related Machine. Finally we have more than 10 years Export
experience.
Q:How to order the steel pipe making machine?
A: Please send us your purchase order by email, whatsapp or wechat.
We need to know the following information for your order:
(1)Tube Mill Information: Pipe material (carbon steel or galvanized
steel); Pipe Diameter, Pipe Thickness , monthly production etc.;
(2)Price Item, Destination Port, Delivery time required
(3)Shipping information: Company Name , Address, Phone Number ,
Destination Seaport/Airport
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Q:Whole Process for doing business with us ?
A:(1)Please provide details of the tube mill product you need we
quote for you
(2)if you Require order, we will provide Performa invoice for you
,and we will arrange to produce at once when we get 30% deposit.
(3)We will send photos of all goods ,packing ,detail ,and B/L copy
for you after goods are finished, we will arrange shipment and
provide original B/L when you pay the balance.
