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   無機(jī)硅膠是一種高活性吸附材料，通常是用硅酸鈉和硫酸反應(yīng)，并經(jīng)老化、酸泡等一系列后處理過程而制得。硅膠屬非晶態(tài)物質(zhì)，其化學(xué)分子式為mSiO2 ．nH2O。不溶于水和任何溶劑，無毒無味，化學(xué)性質(zhì)穩(wěn)定，除強(qiáng)堿、氫氟酸外不與任何物質(zhì)發(fā)生反應(yīng)。各種型號(hào)的硅膠因其制造方法不同而形成不同的微孔結(jié)構(gòu)。硅膠的化學(xué)組份和物理結(jié)構(gòu)，決定了它具有許多其它同類材料難以取代的特點(diǎn)：吸附性能高、熱穩(wěn)定性好、化學(xué)性質(zhì)穩(wěn)定、有較高的機(jī)械強(qiáng)度等，家庭用做干燥劑，濕度調(diào)節(jié)劑，除臭劑等；工業(yè)用作油烴脫色劑，催化劑載體，變壓吸附劑等；精細(xì)化工用分離提純劑，啤酒穩(wěn)定劑，涂料增稠劑，牙膏摩擦劑，消光劑等。

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.

現(xiàn)如今耐高溫硅橡膠是替代市場(chǎng)上普通高溫膠的新膠料，是新一代綠色環(huán)保節(jié)能硅膠原料。 高溫硅橡膠為雙組份加溫硫化和室溫硫化硅橡膠，為透明或米黃色固體，硫化后成為柔軟的彈性材料，溫度范圍在-65°C - 200°C下可長(zhǎng)期使用并保持其柔軟彈性性能，當(dāng)然還有一種特種硅膠，這種耐高溫高拉力硅橡膠短時(shí)間內(nèi)可以耐溫350攝氏度左右。

在眾多的合成硅橡膠中，硅膠是在其中耐溫的佼佼者。硅膠墊片具有優(yōu)異的耐熱性、耐寒性、介電性、耐臭氧和耐大氣老化等性能，硅橡膠突出的性能是使用溫度寬廣，能在-60℃（或更低的溫度）至+250℃（或更高的溫度）下長(zhǎng)期使用。

硅膠本身就具有優(yōu)異的耐高低溫性，可以長(zhǎng)時(shí)間在-60°C—230°C溫度環(huán)境下長(zhǎng)時(shí)間使用。另外我們還可以通過添加耐熱劑，使硅膠耐高溫度達(dá)到300°C。

耐高溫硅膠可以在150°C以下環(huán)境下長(zhǎng)時(shí)間永久性使用；在200°C—250°C溫度環(huán)境下可以連續(xù)使用1000小時(shí)以上；在300°C—350°C溫度環(huán)境下可以連續(xù)使用72小時(shí)；另外可以瞬時(shí)承受400°C高溫。

   兩者經(jīng)過試驗(yàn)證明，硅膠燒時(shí)不會(huì)著明火而且是白煙灰是白色,橡膠是黑煙,灰是黑色的,而且特臭。

   橡膠（Rubber）是指具有可逆形變的高彈性聚合物材料，在室溫下富有彈性，在很小的外力作用下能產(chǎn)生較大形變，除去外力后能恢復(fù)原狀。橡膠屬于完全無定型聚合物，它的玻璃化轉(zhuǎn)變溫度（T g）低，分子量往往很大，大于幾十萬。

   硅膠又稱為硅酸凝膠，是一種高活性吸附材料，屬非晶態(tài)物質(zhì)。硅膠主要成分是二氧化硅，化學(xué)性質(zhì)穩(wěn)定，不燃燒。是一種透明或乳白色粒狀固體。具有開放的多孔結(jié)構(gòu),吸附性強(qiáng),能吸附多種物質(zhì)。在水玻璃的水溶液中加入稀硫酸（或鹽酸）并靜置，便成為含水硅酸凝膠而固態(tài)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.