汽车领域的应用POM 泰科纳 UV25Z 抗紫外线

汽车领域的应用pom 泰科纳 uv25z 抗紫外线

pom泰科纳 uv25z 良好的抗紫外线能力 良好的韧性

celcon® uv25z

聚甲醛（pom）共聚物

可以在 北美洲、拉丁美洲或亚太地区中获得。 典型应用： 汽车行业.

特性包括：

良好的抗紫外线能力

良好的韧性

紫外线稳定

celcon®uv25z cd3068 black

celcon®uv25z cf2001 natural

celconuv25z | pom | uv resistant

description

celcon®uv25z is a nominal 2.5 melt flow rate acetal copolymer which hasbeen specially stabilized to prevent discoloration anddeterioration of mechanical properties from ultraviolet lightexposure. the material is available in precolored black orcolors.

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)

2.2

cm³/10min

iso1133

mvrtest temperature

190

℃

mvrtest load

2.16

kg

moldshrinkage - parallel

%

iso294-4

moldshrinkage - normal

1.7

waterabsorption (23℃-sat)

0.75

iso62

humidityabsorption (23℃/50%rh)

0.2

mech

mechanicalproperties

value

unit

teststandard

tensilemodulus (1mm/min)

2500

mpa

iso527-2/1a

tensilestress at yield (50mm/min)

63

tensilestrain at yield (50mm/min)

11

flexuralmodulus (23℃)

2420

iso178

charpynotched impact strength @ 23℃

8

kj/m²

iso179/1ea

notchedimpact strength (izod) @ 23℃

7

iso180/1a

therm

thermalproperties

meltingtemperature (10℃/min)

166

iso11357-1,-2,-3

dtul@ 1.8 mpa

90

iso75-1/-2

coeff.oflinear therm. expansion   (parallel)

1.1

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

用于pom， 泰科纳 uv25z ，pom抗紫外线,pom这个英雄到底有什么用,pola有用吗