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济南复合板厂:复合板材的优势是什么?

来源:http://www.jnjgcg.com/ 日期:2024-05-24 发布人:

  1、复合材料的比强度和比刚度较高。材料的强度除以密度称为比强度;材料的刚度除以密度称为比刚度。这两个参量是衡量材料承载能力的重要指标,比强度和比刚度较高说明材料重量轻,而强度和刚度大。这是结构设计,特别是航空、航天结构设计对材料的重要要求。现代飞机、导弹和卫星等机体结构正逐渐扩大使用纤维增强复合材料的比例。

1. Composite materials have higher specific strength and stiffness. The strength of a material divided by its density is called specific strength; The stiffness of a material divided by its density is called specific stiffness. These two parameters are important indicators for measuring the load-bearing capacity of materials. A higher specific strength and stiffness indicates a lighter weight of the material, while strength and stiffness are higher. This is an important requirement for materials in structural design, especially in aviation and aerospace structural design. The proportion of fiber-reinforced composite materials used in modern aircraft, missiles, and satellite structures is gradually expanding.

  2、复合材料的力学性能可以设计,即可以通过选择合适的原材料和合理的铺层形式,使复合材料构件或复合材料结构满足使用要求。例如,在某种铺层形式下,材料在一方向受拉而伸长时,在垂直于受拉的方向上材料也伸长,这与常用材料的性能完全不同。又如利用复合材料的羯合效应,在平板模上铺层制作层板,加温固化后,板就自动成为所需要的曲板或壳体。

2. The mechanical properties of composite materials can be designed, that is, by selecting appropriate raw materials and reasonable laying forms, composite components or structures can meet the requirements of use. For example, in a certain layer form, when the material elongates in one direction under tension, the material also elongates in the direction perpendicular to the tension, which is completely different from the performance of commonly used materials. For example, by utilizing the bonding effect of composite materials, layer by layer boards are made on a flat mold, and after heating and curing, the boards automatically become the required curved boards or shells.

  3、复合材料的抗疲劳性能良好。一般金属的疲劳强度为抗拉强度的40 ~50%,而某些复合材料可高达70 ~ 80%。复合材料的疲劳断裂是从基体开始,逐渐扩展到纤维和基体的界面上,没有突发性的变化。因此,复合材料在破坏前有预兆,可以检查和补救。纤维复合材料还具有较好的抗声振疲劳性能。用复合材料制成的直升飞机旋翼,其疲劳寿命比用金属的长数倍。

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3. The fatigue resistance of composite materials is good. The fatigue strength of general metals is 40-50% of the tensile strength, while some composite materials can reach up to 70-80%. The fatigue fracture of composite materials starts from the matrix and gradually extends to the interface between fibers and matrix, without any sudden changes. Therefore, composite materials have premonitions before failure, which can be checked and remedied. Fiber composite materials also have good anti acoustic vibration fatigue performance. The fatigue life of helicopter rotors made of composite materials is several times longer than that of metals.

  4、复合材料的减振性能良好。纤维复合材料的纤维和基体界面的阻尼较大,因此具有较好的减振性能。用同形状和同大小的两种梁分别作振动试验,碳纤维复合材料梁的振动衰减时间比轻金属梁要短得多。

4. The vibration reduction performance of composite materials is good. The damping at the interface between fibers and matrix in fiber composite materials is relatively high, thus exhibiting good vibration reduction performance. Using two types of beams of the same shape and size for vibration tests, the vibration attenuation time of carbon fiber composite beams is much shorter than that of light metal beams.

  5、复合材料通常都能耐高温。在高温下,用碳或硼纤维增强的金属其强度和刚度都比原金属的强度和刚度高很多普通铝合金在400°C时,弹性模量大幅度下降,强度也下降,而在同一温度下,用碳纤维或硼纤维增强的铝合金的强度和弹性模量基本不变。复合材料的热导率一般都小,因而它的暖时耐超高温性能比较好。

5. Composite materials are usually resistant to high temperatures. At high temperatures, metals reinforced with carbon or boron fibers have much higher strength and stiffness than the original metal. Ordinary aluminum alloys have a significant decrease in elastic modulus and strength at 400 ° C. However, at the same temperature, the strength and elastic modulus of aluminum alloys reinforced with carbon or boron fibers remain basically unchanged. The thermal conductivity of composite materials is generally small, so their warm time and ultra-high temperature resistance performance is relatively good.

  6、复合材料的性好。在纤维增强复合材料的基体中有成千上万根独立的纤维。当用这种材料制成的构件超载并有少量纤维断裂时,载荷会迅速重新分配并传递到未破坏的纤维上,因此整人构件不于在短时间内丧失承载能力。

6. Composite materials have good safety. There are thousands of independent fibers in the matrix of fiber-reinforced composite materials. When a component made of this material is overloaded and has a small amount of fiber fracture, the load will quickly redistribute and transfer to the undamaged fibers, so the entire component will not lose its bearing capacity in a short period of time.

以上是关于 济南复合板厂 的介绍,若想了解相关知识可请点击:http://www.jnjgcg.com 我们将会全心全意为您提供满分服务,欢迎您的来电!

The above is an introduction to Jinan Composite Board Factory. If you want to learn more about related knowledge, please click: http://www.jnjgcg.com We will wholeheartedly provide you with full score service. Welcome to call us!

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