Selar® PA3426
Polyamide 6I/6T Copolymer
DuPont Packaging & Industrial Polymers
产品说明：
Selar® PA 3426 is an amorphous nylon (polyamide) resin whichexhibits superior transparency, good barrier properties to gases,water, solvents and essential oils and high temperature structuralproperties which make it suitable for consideration in a number ofapplications.
Features:
Selar® PA 3426 barrier resin can be utilized in both flexibleand rigid packaging structures and is characterized by very goodgas O2, CO2 and moisture barrier. Furthermore, Selar® PA is uniquein that its gas barrier improves with increasing relative humidity.It has excellent physical properties, high temperature resistanceand excellent optical properties desirable in a structural resin.Like other nylons, Selar® PA barrier resin is an excellent barrierfor many types of solvent systems. In general it has goodresistance to aliphatic, aromatic hydrocarbons, dilute alkalis,higher molecular weight alcohols, and low concentrations of lowermolecular weight alcohols. It is not recommended for acids orconcentrated lower molecular weight alcohols. End use testing isrecommended for each application. With its high degree ofstiffness, very good gas and moisture barrier, solvent resistanceand excellent gloss and clarity, Selar® PA used in monolayerprovides a "glass like" container for rigid packaging.
Applications:
High melt viscosity for extrusion processes such as EBM.
Improved performance in shrink applications when blended withnylon 6.
Monolayer - blow molded tubes, pharmacuetical vials or bottles,typically less than 4 ounces.
Nylon 6 modification for higher heat resistance, better oxygenbarrier, broader thermoforming window.
物性信息：
| 基本信息 | |
|---|---|
| 特性 | 耐热性，高清晰度，高阻隔树脂 |
| 用途 | 包装薄膜管件混合瓶子小瓶 |
| 机构评级 | FDA 21 CFR 177.1500(a)(12)FDA 21 CFR 177.1500(b)(12) |
| 形式 | 粒子 |
| 物理性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 比重 | 1.19 | g/cm³ | ASTM D792, ISO 1183 |
| 固有粘度 | 0.82 | ASTM D5225 | |
| 含水量 1 | % | ISO 15512 |
| 热性能 | 额定值 | 单位制 | 测试方法 |
|---|---|---|---|
| 玻璃转化温度 | 125 | °C | DSC |
| 注射 | 额定值 | 单位制 | |
|---|---|---|---|
| 加工（熔体）温度 | 240 到 250 | °C |
| 注射说明 |
|---|
| Maximum Processing Temperature: 310°C (590°F) |
PA性质：结晶性热可塑性塑料，有明显熔点，Nylon6Tm为220-230℃，Nylon66则为260-270℃，
Nylon本身具吸水基故有吸水性，成形前须干燥，温度过高干燥则尼龙粒变色。
优点：1、具高抗张强度；2、耐韧、耐冲击性特优；3、自润性、耐磨性佳、耐药品性优；4、低温特性佳；5、具自熄性；
用途：广泛应用于机械、仪器仪表、汽车部件、电子电气、铁路、家电、通讯、纺机、体育休闲用品、油管、油箱及一些精密工程制品。
电子电器：连接器、卷线轴、计时器、护盖断路器、开关壳座
汽车： 散热风扇、门把、油箱盖、进气隔栅、水箱护盖、灯座
工业零件：椅座、自行车输框、溜冰鞋底座、纺织梭、踏板、滑输
分类：防静电PA，导电PA，加纤防火PA，防火PA，抗紫外线耐候PA，高温挤出级PA。
导电尼龙66：具有良好的耐磨性、耐热性、耐油性及耐化学药品性，还大大降低了原材料的吸水率和收缩率,
具有优良的尺寸稳定性及优异的机械强度。能满足静电消散和静电放电(ESD)防护的要求。这些特殊改性材料经特殊配制，
适用于从100到1012欧姆每平方(ohms每sq)的表面电阻范围，可用于注塑及挤出等成型。
有很多超越金属和涂装的优点:零件重量较轻，较易处理，运输成本较低。它们的装配简便，制造成本较低，并且较不会受到撞凹，割损和刮伤。
为了标识或美观目的，一些材料可被预先染色，避免费时且昂贵的两次着色加工
