AOA体育

   是一种高活性吸附材料，通常是用硅酸钠和硫酸反应，并经老化、酸泡等一系列后处理过程而制得。硅胶属非晶态物质，其化学分子式为mSiO2 ．nH2O。不溶于水和任何溶剂，无毒无味，化学性质稳定，除强碱、氢氟酸外不与任何物质发生反应。各种型号的硅胶因其制造方法不同而形成不同的微孔结构。硅胶的化学组份和物理结构，决定了它具有许多其它同类材料难以取代的特点：吸附性能高、热稳定性好、化学性质稳定、有较高的机械强度等，家庭用做干燥剂，湿度调节剂，除臭剂等；工业用作油烃脱色剂，催化剂载体，变压吸附剂等；精细化工用分离提纯剂，啤酒稳定剂，涂料增稠剂，牙膏摩擦剂，消光剂等。

In fact, the argument about whether silicone products are toxic is different. To put it bluntly, the fundamental thing to discuss about silicone products is silicone. There are two main points of view.


1. Medical silica gel is non-toxic. Silicone prostheses can withstand considerable pressure. Therefore, it is difficult to squeeze it with ordinary external forces unless it is violently attacked or punctured by sharp objects. The ruptured silicone prosthesis is like jelly, even tougher than jelly, and will not flow out. It may cause inflammation of surrounding tissues in a short period of time. The external appearance is mainly pain, etc. As long as you go to the hospital for treatment in time, it is not Will cause too much harm to the body.


Silica gel also becomes a silicic acid gel, which is a highly active adsorbent material and belongs to an amorphous substance. The main component of silica gel is silica, which is chemically stable and does not burn. Therefore, silicone products are non-toxic and environmentally friendly products.


Second, whether it is toxic or harmful to the human body cannot be regarded as a standard. What is toxic and what is non-toxic? Any product has its side effects. It depends on whether this side effect constitutes harm to the human body. Generally, food-grade silicone on the market can be tasteless and edible, and can be used with confidence. The prices of the two raw materials are similar, mainly due to different physical properties (such as toughness, aging resistance, temperature resistance, tensile strength, etc.). Of course, it does not exclude individual speculators.

现如今耐高温硅橡胶是替代市场上普通高温胶的新胶料，是新一代绿色环保节能硅胶原料。 高温硅橡胶为双组份加温硫化和室温硫化硅橡胶，为透明或米黄色固体，硫化后成为柔软的弹性材料，温度范围在-65°C - 200°C下可长期使用并保持其柔软弹性性能，当然还有一种特种硅胶，这种耐高温高拉力硅橡胶短时间内可以耐温350摄氏度左右。

在众多的合成硅橡胶中，硅胶是在其中耐温的佼佼者。硅胶垫片具有优异的耐热性、耐寒性、介电性、耐臭氧和耐大气老化等性能，硅橡胶突出的性能是使用温度宽广，能在-60℃（或更低的温度）至+250℃（或更高的温度）下长期使用。

硅胶本身就具有优异的耐高低温性，可以长时间在-60°C—230°C温度环境下长时间使用。另外我们还可以通过添加耐热剂，使硅胶耐高温度达到300°C。

耐高温硅胶可以在150°C以下环境下长时间永久性使用；在200°C—250°C温度环境下可以连续使用1000小时以上；在300°C—350°C温度环境下可以连续使用72小时；另外可以瞬时承受400°C高温。

   两者经过试验证明，硅胶烧时不会着明火而且是白烟灰是白色,橡胶是黑烟,灰是黑色的,而且特臭。

   （Rubber）是指具有可逆形变的高弹性聚合物材料，在室温下富有弹性，在很小的外力作用下能产生较大形变，除去外力后能恢复原状。橡胶属于完全无定型聚合物，它的玻璃化转变温度（T g）低，分子量往往很大，大于几十万。

   又称为硅酸凝胶，是一种高活性吸附材料，属非晶态物质。硅胶主要成分是二氧化硅，化学性质稳定，不燃烧。是一种透明或乳白色粒状固体。具有开放的多孔结构,吸附性强,能吸附多种物质。在水玻璃的水溶液中加入稀硫酸（或盐酸）并静置，便成为含水硅酸凝胶而固态化。

Packaging in electronic components refers to connecting the circuit pins on the silicon chip to external connectors with wires to connect with other devices. The packaging form refers to the housing for mounting semiconductor integrated circuit chips.


It not only plays the role of installing, fixing, sealing, protecting the chip and enhancing the electrothermal performance, but also connects to the pins of the package shell through wires through the contacts on the chip, and these pins pass through the wires on the printed circuit board Connect with other devices to realize the connection between internal chip and external circuit.


Because the chip is isolated from the outside, to prevent the impurities in the air from corroding the chip circuit and causing electrical performance to decline. On the other hand, the packaged chips are also easier to install and transport.


Because the quality of the packaging technology also directly affects the performance of the chip itself and the design and manufacture of the PCB (printed circuit board) connected to it, it is crucial.