泰科纳POM MT8U01---- acetal copolymer grade MT8U01 is a special grade developed for medical industry applicati*** containing low residual monomers and no animal products. Hostaform® MT8U01 is an injection molding grade with a molecular weight for excellent moldability and optimum properties in demanding applicati***.
Physical performance rating unit system test method
Density: 1.41 g / cm? ISO 1183
MVR (190 ° C / 2.16 kg) 8.00 cm3 / 10min ISO 1133
Shrinkage: ISO 294-4
Vertical flow direction 1.8% ISO 294-4
Flow direction: 2.0% ISO 294-4
Water absorption (saturated, 23 ° C) 0.65% ISO 62
Mechanical properties rating unit system test method
Tensile modulus 2850 MPa ISO 527-2 / 1A / 1
Tensile stress (yield) 64.0 MPa ISO 527-2 / 1A / 50
Tensile strain (yield) 9.0% ISO 527-2 / 1A / 50
Nominal tensile breaking strain 30% ISO 527-2 / 1A / 50
Tensile creep modulus ISO 899-1
1 hr 2500 MPa ISO 899-1
1000 hr 1300 MPa ISO 899-1
Bending modulus (23 ° C) 2700 MPa ISO 178
Impact performance rating unit system test method
Notched impact strength of simply supported beams ISO 179 / 1ea
-30°C 6.0 kJ/m² ISO 179/1eA
23°C 6.5 kJ/m² ISO 179/1eA
Impact strength of ISO / 179 simply supported beam
-30°C 160 kJ/m² ISO 179/1eU
23°C 180 kJ/m² ISO 179/1eU
Thermal performance rating unit test method
Hot deformation temperature (1.8 MPa, UN annealed) 104 ° C ISO 75-2 / A
Melting temperature 1 166 ° C ISO 11357-3
Linear coefficient of thermal expansion - flow 1.1e-4 cm / cm / ° C ISO 11359-2
Injection rating unit system
Drying temperature: 120 to 140 ° C
Drying time: 3.0 to 4.0 HR
Recommended maximum moisture content 0.15%
Hopper temperature from 20.0 to 30.0 ° C
The temperature at the back of the barrel is 170 to 180 ° C
The temperature in the middle of the barrel is 180 to 190 ° C
Temperature at front of barrel 190 to 200 ° C
Nozzle temperature 190 to 210 ° C
Processing (melt) temperature 190 to 210 ° C
Mold temperature: 80.0 to 120 ° C
杜邦公司采用机械共混和接枝共聚的方法开发出超韧性POM/PUR-T合金，既保持了POM的强度和刚性，又提高了POM的耐冲击性，其缺口冲击强度比纯POM提高17倍，达到906J/m。四川大学白时兵等5发现采用以CaCO3为核、PUR-T为壳的PUR-T/CaCO3超细复合粉体增韧POM，其缺口冲击强度大大提高。于建等对其进一步研究表明，PUR-T包覆CaCO3粒子的粒间距达到临界值Tc≤0.18μm，包覆层厚度达到临界值Lc≥0.7μm时，共混POM材料发生脆-韧转变，材料的冲击强度可比纯POM提高数十倍，而且拉伸强度可达30MPa左右。
POM塑胶原料是分子主链中含有-CH2-O-链节的线性高分子化合物，为乳白色不透明结晶性线性热塑性树脂。POM是一种没有侧基、高密度、高结晶的线性聚合物，具有优异的综合性能。它是继尼龙之后发展的优良树脂品种，分子结构规整和结晶性使其物理机械性能十分优异，有“金属塑料”之称。POM按分子链中化学结构的不同可分为均聚甲醛和共聚甲醛两种，均聚甲醛一般是由无水聚甲醛聚合而得，共聚甲醛是由***与少量二氧戊环的共聚产物。正是由于结构上的不同，导致均聚和共聚甲醛在各项性能下存在差异