塑胶原料POM MR50B 美国泰科纳 Celcon

塑胶原料pom mr50b 美国泰科纳 celcon

聚甲醛pom分为两种不同类型的聚甲醛pom,均聚甲醛pom、共聚甲醛pom.均聚甲醛pom机械强度、刚性、热变形温度高、结晶度高,都比共聚甲醛pom要高更好,共聚甲醛pom热稳定、流动性、加工性、耐化学腐蚀性要比均聚甲醛pom要好的是共聚甲醛pom的熔点比较低.这两种不同的种类的聚甲醛pom有着很大的区别,不同的区别在于均聚甲醛pom的密度和结晶度熔点度都很高.

celcon®mr50b cd3068 black

celcon®mr50b cf2001 natural

celconmr50b | pom | specialty

description

celcon®mr50b is a specialty media resistant grade developed for improvedbleach resistance and improved toughness.

otherprocessing

injectionmolding

standardreciprocating screw injection molding machines with a highcompression screw (minimum 3:1 and preferably 4:1) and low backpressure (0.35 mpa/50 psi) are favored. using a low compressionscrew (i.e. general purpose 2:1 compression ratio) can result inunmelted particles and poor melt homogeneity. using a high backpressure to make up for a low compression ratio may lead toexcessive shear heating and deterioration of thematerial.

melttemperature: preferred range 182-199℃ (360-390℉).melt temperature should never exceed 230℃ (450℉).

moldsurface temperature: preferred range 82-93℃ (180-200℉)especially with wall thickness less than 1.5 mm (0.060 in.). mayrequire mold temperature as high as 120℃(250℉)to reproduce mold surface or to assure minimal molded in stress.wall thickness greater than 3mm (1/8 in.) may use a cooler(65℃/150℉)mold surface temperature and wall thickness over 6mm (1/4 in.) mayuse a cold mold surface down to 25℃ (80℉).in general, mold surface temperatures lower than82℃ (180℉)may hinder weld line formation and produce a hazy surface or asurface with flow lines, pits and other included defects that canhinder part performance.

isodata

mechanicalproperties

value

unit

teststandard

phys

density

1410

kg/m³

iso1183

meltvolume rate (mvr)

4

cm³/10min

iso1133

mvrtest temperature

190

℃

mvrtest load

2.16

kg

moldshrinkage - parallel

2.5

%

iso294-4

moldshrinkage - normal

2

mech

mechanicalproperties

value

unit

teststandard

tensilemodulus (1mm/min)

2600

mpa

iso527-2/1a

tensilestress at yield (50mm/min)

63

tensilestrain at yield (50mm/min)

11

flexuralmodulus (23℃)

2500

iso178

charpyimpact strength @ 23℃

139

kj/m²

iso179/1eu

charpyimpact strength @ -30℃

115

charpynotched impact strength @ 23℃

8

iso179/1ea

notchedimpact strength (izod) @ 23℃

iso180/1a

therm

thermalproperties

meltingtemperature (10℃/min)

166

iso11357-1,-2,-3

dtul@ 1.8 mpa

93

iso75-1/-2

coeff.oflinear therm. expansion   (parallel)

0.9

e-4/℃

iso11359-2

coeff.oflinear therm. expansion   (normal)

specprod

testspecimen production

processingconditions acc. iso

9988-2

-

internal

processing

predrying

dryingis not normally re if material has come in contact withmoisture through improper storage or handling or through regrinduse, drying may be necessary to prevent splay and odorproblems.

dryingtime (h):3

dryingtemperature (℃):80- 100

塑胶原料pom ，pom mr50b, 美国泰科纳 pom celcon,pom塑料增韧剂，pom型号