美国杜邦沙林 8320 SURLYN 8320 低硬度 三元共聚
SURLYN结构与特点：SURLYN树脂是杜邦美国杜邦公司利用*特的生产工艺聚合而成，是由高压自由基聚合的乙烯-甲基丙烯酸共聚物经部分或全部中和而制成的一种共聚物。SURLYN树脂中酸的含量约为6%（摩尔），用钠、钾、镁或锌的化合物中和酸。
Surlyn树脂的密度为0.93～0.94克/立方厘米，它可以像低密度聚乙烯那样进行吹塑和挤出成型；而另一方面它又比低密度聚乙烯有高的强度、耐油性和对材料的粘合性。由于它还具有优异的透明度而曾被称为透明聚乙烯。
这些特性是由于分子中存在离子键的结果。SURLYN有着优异的低温抗冲击韧性,出色的抗磨损、刮擦性能,出色的抗化学药品性能,SURLYN透明、清澈、光泽柔和华贵,SURLYN有优异的熔融强度（熔融下拉伸不断裂）,有多种牌号符合FDA相关标准,可直接粘贴环氧树脂和聚丙烯表面作修饰保护,也可直接热贴合在金属、玻璃、纤维表面作修饰保护.
DuPont Saline 8320 SURLYN 8320 low hardness ternarycopolymer
Structure and characteristics of SURLYN: SURLYN resin ispolymerized by DuPont Company of the United States using specialproduction process. It is a copolymer made of ethylene-methacrylicacid copolymer polymerized by high-pressure free radical andpartially or completely neutralized. The content of acid in SURLYNresin is about 6% (mol), and the acid is neutralized with sodium,potassium, magnesium or zinc compounds. The density of Surlyn resinis 0.93~0.94 g/cm3, which can be blown and extruded like lowdensity polyethylene;
On the other hand, it has higher strength, oil resistance andadhesion to materials than LDPE. It was once called transparentpolyethylene because of its excellent transparency. Theseproperties are due to the existence of ionic bonds in the molecule.SURLYN has excellent low temperature impact resistance, excellentabrasion resistance, scratch resistance, and excellent chemicalresistance.
SURLYN is transparent, clear, soft and luxurious. SURLYNhas excellent melting strength (tensile strength does not breakunder melting). There are many brands that meet the relevant FDAstandards. It can be directly pasted on the surface of epoxy resinand polypropylene for modification and protection, or directlyhot-pasted on the surface of metal, glass, and fiber formodification and protection
