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东莞市晶宏塑胶原料有限公司
主营：工程塑料,通用塑料,热塑弹性体
东莞市晶宏塑胶原料有限公司
主营：工程塑料,通用塑料,热塑弹性体
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PA66简介：尼龙（Nylon），中文名聚酰胺，英文名称Polyide（简称PA），是分子主链上含有重复酰胺基团—[NHCO]—的热塑树脂总称。其命名由合成单体具体的碳原子数而定。是美国的化学工业公司──杜邦公司化学家卡罗瑟斯和他的科研小组发明的。 尼龙PA66；聚己二酰己二胺；英文名：Polyide 66，缩写 nylon 66。 CAS编号：32131-17-2 尼龙PA66是PA系列中机械强度、应用广的品种,因其结晶度高,故其刚、耐热都较高.
PA66加工的流道和浇口:由于 PA66 的凝固时间很短，因此浇口的位置非常重要。浇口孔径不要小于 0.5*t（这里 t 为塑件厚度）。如果使用热流道，浇口尺寸应比使用常规流道小一些， 因为热流道能够帮助阻止材料过早凝固。如果用潜入式浇口，浇口的小直径应当是0.75。
The development of PA66: in the te 1940s, Dopont company in the United States realized the industrial production of PA66. At present, there are more than 20 kinds of nylon resins in the world aording to their structures, with more than 800 brand numbers. The product ne is determined by the number of carbon atoms in the repeating unit of nylon macromolecule. The general formu can be written as nylon or Pa. There are PA6, PA66, PA11, PA12, PA610, pa612, PA1010, PA46, PA6T, PA9T, etc. ong them, PA6 and PA66 are the main varieties, aounting for about 92% of the total ount of PA engineering pstics.
Introduction to PA66: nylon (nylon), Chinese ne polyide, English ne polyide (PA), is the general ne of thermopstic resin containing repeating ide group - [nhco] - on the main chain. Its ne is determined by the specific number of carbon atoms in the synthetic monomer. It was invented by the fous chemist Carlos of DuPont company, the rgest chemical industry company in the United States, and his research te. Nylon PA66; polyhexanediine; polyide 66, abbreviated as nylon 66. CAS No.: 32131-17-2 nylon PA66 has the highest mechanical strength and the most widely used variety in PA series. Because of its high crystallinity, it has high rigidity and heat resistance
PA66 processing mold temperature: recoended 80 ℃. Mold temperature will aff the crystallinity, which will aff the physical properties of the product. For thin-walled pstic parts, if the mold temperature is lower than 40 ℃, the crystallinity of the pstic parts will change with time. In order to maintain the geometric stability of the pstic parts, annealing treatment is needed.
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