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Polyoxymethylene(POM): is also commonly known as (Poly)acetal, POM is a kind of Semi-crystalline Polymers, strong, has nice rigidity, and high mechanical strength, which means it is widely used in different industrial usages. The chemical formula of Polyoxymethylene is (CH2O)n.
POM can be divided into homopolymer and copolymer by different manufacturing processes, below please check the comparing properties of them:
- Polyoxymethylene-Homopolymer (POM-H): Also known as Acetal Homopolymer, with higher crystallinity, thus the density, melting temperature, and rigidity are also higher, and the tensile strength is higher as well. POM-H has better mechanical properties, and a shorter molding cycle time, so it can help reduce molding costs and it allows us to use on different mold designs.
- Polyoxymethylene-Copolymer (POM-C): Also known as Acetal Copolymer, which has better resistance to chemical solvents (alkaline environment), it has lower melting temperature, and faster molding cycles, thus it's easier for manufacture processing, furthermore, it has better maintenance of color under UV exposure.
Features:
2, POM has high-temperature resistance, so POM is also used in pipeline devices.
3, POM is a tough and elastic material, POM still has good creep resistance even at low temperatures, and POM has good geometric stability and impact resistance.
4, the high degree of crystallization of POM leads to its high shrinkage, POM plastic can reach 2% to 3.5%. POM has different shrinkage rates for a variety of different reinforced materials.
| Product Description | Applications | |||||
| ·Good dimensional stability | · Injection molding | |||||
| ·Excellent heat stability | · Good mechanical properties balance | |||||
| Properties | Test Method | Test Condition | Unit | Typical Values | ||
| Specific Gravity | ISO 1183 | 23ºC | g/cm3 | 1.41 | ||
| MI | ISO 1183 | g/10min | 9 | |||
| Ash | ISO 3451 | 800ºC,30min | % | 0 | ||
| Mechanical properties | ||||||
| Tensile Strength | ISO 527 | 50mm/min | MPa | 63 | ||
| (Fracture) elongation | ISO 527 | 50mm/min | % | 33 | ||
| Flexural Modulus | ISO 178 | 2mm/min | MPa | 2500 | ||
| Mold Shrinkage | Internal test method | ºC | 1.8-2.2 | |||
| Hardness | --- | --- | 75M | |||
| Bending Strength | ISO 178 | 23ºC | MPa | 87 | ||
Notched Charpy Impact strength | ISO 179/1eA | 23ºC | KJ/m2 | 6 | ||
| Other properties | ||||||
| Note: The data above is a typical value for reference, not a guaranteed value. The data will vary with tool design such as gate type, gate location, gate number, injection molding process, and part thickness. The data will vary with different colors as well. Prior to using the material, please consult with TOPO NEW Material Co., Ltd. | ||||||
| Processing Conditions | Range | |||||
| Melt Temperature | 230-250ºC | |||||
| Mold Temperature | 60-100ºC | |||||
| Pre-Dry needed | 90ºC, 3-4h | |||||
| Note: The above process condition is only for reference. The actual process should be adjusted according to different types of machines, mold designs, and product designs. | ||||||
Are you a trading company or manufacturer?
We are a manufacturer.
About Sample?
A 5 KG Free Sample can be offered per your request.
About Material Color?
We can make the material to your appointed color according to Pantone/RAL#.
How does your factory control the quality?
Quality is the Priority, we always pay great importance to quality from beginning to end, and we have professional QC for item quality from spare parts to finished goods.
How many days for mass production?
20 days after all artwork and 30% deposit are confirmed.
How can I get the samples? Is the sample free?
7-10 days to send free samples by DHL, TNT, and UPS.
