描述
电子盖用FR V0 PBT GF30/GF20颗粒
规格
1。树脂PBT塑料材料
2。高冲击PBT
3。耐磨性好
FR V0 PBT GF30/GF20电子盖用颗粒
产品细节
FR V0 PBT GF30/GF20电子盖用颗粒
在使用PBT的产品中，为了简化工艺、减少零件数量和缩小产品尺寸，许多产品采用树脂和金属零件相结合的插入成型技术。虽然嵌件成型是一个非常有用的过程，但当产品的温度在很大范围内时，由于金属和树脂的线性膨胀系数的差异，总是需要考虑树脂部分的疲劳失效的可能性。物质具有高温膨胀、低温收缩的特性，其大小（线性膨胀系数）因物质而异。树脂的线膨胀系数大于金属的线膨胀系数（对于温度变化，膨胀和收缩范围较大）。在树脂涂层金属的形状中，金属会抑制环境温度下降引起的树脂收缩，因此树脂内部会产生应变。在这种情况下，如果温度反复上升和下降，产生的应变将导致损伤累积，最终导致疲劳失效
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FR V0 PBT GF30/GF20 Granules For Electronic Cover
Specifications
1.Resin-PBT plastic material
2.High Impact PBT
3.good abrasion resistance.
FR V0 PBT GF30/GF20 Granules For Electronic Cover
Product Details
FR V0 PBT GF30/GF20 Granules for electroniccover
In the products using PBT, for the purpose of simplifying the process, reducing the number of parts and reducing the product size, many products adopt insert molding technology that combines resin and metal parts. Although insert molding is a very useful process, it is always necessary to consider the possibility of fatigue failure of the resin part due to the difference in the linear expansion coefficient of metal and resin when the temperature of the product is used in a large range. Substances have the characteristic of expanding at high temperatures and contracting at low temperatures, and the magnitude (coefficient of linear expansion) varies from substance to substance. The coefficient of linear expansion of resin is larger than that of metal (for temperature changes, the expansion and contraction range is large). In the shape of resin-coated metal, metal will inhibit the shrinkage of the resin caused by the drop in ambient temperature, so strain will be generated inside the resin. In this situation, if the temperature repeatedly rises and falls, the resulting strain will cause the damage to accumulate and eventually lead to fatigue failure.
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