Home > News > Industry News > What is POM?
News
Daily News
Industry News
Company news
Certifications
Latest News

Gifts of love in ancient China

Jade pendants The ancient Chinese usually gave their lovers something small so that they could easily take it everywhere. A jade pendant is a good cho...

what is mild steel

Mild steel is a type of carbon steel with a low amount of carbon – it is actually also known as “low carbon steel.” Although ranges vary depending ...

10 Differences between a Businessman and Entrepreneur

10 Differences between a Businessman and Entrepreneur Business people and entrepreneurs have many similarities.However, they are not the same kind of ...

What is ALOCROM 1200 surface treatment

What is ALOCROM 1200surface treatment Alocrom 1200 is a rapidnon-electrolytic dip process which gives excellent protection against corrosionto both pa...

What is Kydex material

What is Kydexmaterial Kydex is a line of thermoplasticacrylic-polyvinyl chloride materials manufactured by Sekisui SPI. It has a widevariety of applic...

What is Over mold?

Overmolding is also called 2 times injection molding in China. Compared with the third-party material bonding, overmolding process makes the process f...

What is Alodine 5200 surface treatment

What is Alodine 5200surface treatment Alodine 5200 treatment is a chromiumfree product and specifically formulated for treating aluminium and its allo...

What is Black Oxide?

Black Oxide, blackening, oxidizing, oxiding, black passivating, gun bluing . . . these terms all refer to the process of forming a black iron oxide on...

How and When to Add Bend Reliefs to Sheet Metal Parts

What is a Bend Relief? A bend relief is nothing more than two small incisions cut into a piece of sheet metal to free the metal between the two. It se...

Privacy Policy

We will not collect and store your information in any form.
Contact Us
Vice General Manager: Ivy
Tel:86-13312953695
Tel:86-755-82737317/82737469
Fax:86-755-82737710
E-mail: sales910@xy-global.com, sales.china@xy-global.com
Postal Code: 518129
Off Add: Room1702,17F,Building#4,Tianan Cloud Park,No.2018 Xuegang Rd.,Longgang District,Shenzhen.
Factory Add:Daling Industrial Area,Shaling,Fenggang Town,Dongguan City Contact Now

What is POM?

What is POM?

Michelle Www.xy-global.com 2018-05-30 16:34:31
English name: Polyoxymethylene(Polyformaldehyde)
POM(Polyformaldehyde resin) Definition: Polyoxymethylene is a linear polymer with no side chains, high density, and high crystallinity. According to the different chemical structures in its molecular chain, it can be divided into two kinds of homopolyoxymethylene and copolyacetal. The important difference between the two is: the homopolyformaldehyde density, crystallinity, melting point are high, but the thermal stability is poor, the processing temperature range is narrow (about 10 °C), and the acid-base stability is slightly lower; the density of copolymerization formaldehyde, crystallinity, Its melting point and strength are low, but its thermal stability is good and it is not easy to decompose. The processing temperature range is wide (about 50°C) and its stability to acid and alkali is better. It is an engineering plastic with excellent overall performance. Good physical, mechanical and chemical properties, especially excellent rub resistance. Commonly known as Saigang or Winning Steel, it is the third-largest general-purpose plastic. Suitable for the production of wear-resisting parts, transmission parts, and chemical, instrumentation and other parts.
One of the synthetic resins, also known as polyoxymethylene resin, POM plastic, race steel, etc.; is a white or black plastic particles, with high hardness, high rigidity, high wear resistance. Mainly used for gears, bearings, auto parts, machine tools, instrument internals and other products that act as a skeleton.
Features:
(1) Prior to POM processing, no drying is required, and it is preferable to carry out preheating (about 80°C) during the processing, which is beneficial to the stability of the product size.
(2) POM processing temperature is very narrow (0 ~ 215 °C), in the barrel residence time is slightly longer or the temperature exceeds 220 °C will decompose, produce a strong irritant formaldehyde gas.   
(3) When the POM material is injected, the holding pressure should be larger (similar to the injection pressure) to reduce the pressure drop. The screw speed can not be too high, and the residual quantity should be less;
(4) The shrinkage rate of POM products is relatively large, and it is easy to produce shrinkage or deformation. The specific heat of POM is large, the mold temperature is high (80-100°C), and the product is very hot when it is demolded. It is necessary to prevent scald fingers; (5) POM should be “ "Medium pressure, medium speed, low material temperature, high mold temperature" molding processing, precision molding products need to use mold temperature control
(6) High mechanical strength and rigidity
(7) The highest fatigue strength
(8) Good environmental resistance and organic solvent resistance
(9) strong resistance to repeated impact, good electrical properties, good recovery, with its own lubrication, good wear resistance, excellent dimensional stability.
application:
   Can replace most of the coloredmetal,car,machine tool, Instrumentation internals, bearings, fasteners, gears, springs, pipes, conveyor belt accessories, electric hydrants, pump housings, drainers, faucets, etc.