tpu丨2306c丨美国rtp系列tpu 5712、tpv 591-65、pa6 v50、pa66 rf002、ppo en7010、pa6 bg-60fc、pp hf-3208h 、pom kfi12a、pbt 310、
eva 7310m、mbs em600pp 7425、tpe g90a 21、pp hp528n、pp pm201 、ppo gfn2、pom gc240、pa66 rcl-4033、pc dzl34e、pa6 kn133hi
hdpe copolymerized monomer. this change is generally measured by the density,&the density is linearly related to the crystallization rate. the united states is generally classified according to astm d1248, the density of hdpe is above 0.940g/cc,&the density range of medium density polyethylene (mdpe) is 0.926 to 0.940g/cc. other classifications are sometimes classified as mdpe in hdpe/lldpe. the homopolymer has the highest density, the maximum rigidity, the good anti permeability&the highest melting point, but generally has the very poor resistance to environmental stress cracking (escr). escr is the ability of pe to resist cracking caused by mechanical/chemical stress. higher density generally improves mechanical strength, such as tensile strength, stiffness&hardness, thermal properties such as softening point temperature&hot deformation temperature,&permeability resistance, such as air permeability/water vapor permeability. low density improved the impact strength&escr. the polymer density is mainly influenced by the addition of the copolymerized monomers, but less to the molecular weight. the percentage of high molecular weight decreases the density slightly. for example, the homopolymer has a different density in a wider range of molecular weight.
tpu丨2306c丨美国rtp系列pa6 c216v30、pp mk001as 、pbt 5101g-15、evoh h171b、pc s、pc st5131v、pc 503r-131、pa66 1500、pc 3410、
pc bs-8110r、pp bh3720abs xr-401、pa66 70g25hslr、pom hi-525、tpe 1475、pom gf40-01、pp 3000、pc g-3430rf、pp hp563s 、
pom m90-04pa6 cm1046k4、pbt 4880、tpe 1065bm/8901
thermal deformation temperature
tpu丨2306c丨美国rtp系列tpe e1080a 、epdm s5206f、abs 100g-30、pc ld7890、pc 9010-1573、tpee 1172mlf、pc ivy2200r、pc/abs ce3510、tpv 9203-54 、
pom fc2020d、pp h110-02nzabs pa-765b、tpu 46-73/27、pp aw564、pp 3914m 、pc 4410-11、pom 7010、pbt kp513mt25、eva n1003hb、
pp mfx-1008mgabs ts-15、pc/abs hr-5007a、pa66 kn333g30hi3
明一
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