在雙道密封中空玻璃的生產(chǎn)過程中，作為一道密封的丁基膠涂布的成功與否直接影響到中空玻璃的質(zhì)量與使用壽命。   而在實(shí)際生產(chǎn)過程中，丁基膠涂布有時(shí)會遇到氣泡現(xiàn)象，氣泡現(xiàn)象后果產(chǎn)生的危害主要有兩個：

　　In the production process of double sealed insulating glass, the success or failure of butyl rubber coating as a sealing directly affects the quality and service life of the insulating glass. In the actual production process, butyl rubber coating sometimes encounters bubble phenomenon, and the hazards caused by bubble phenomenon mainly include two aspects:

　?。?）使正常涂布的膠條中斷，影響涂布效率。

　　(1) Interrupt the normal coating of the adhesive strip, affecting the coating efficiency.

　?。?）因大量微小氣泡的產(chǎn)生影響膠條表面的光亮度，產(chǎn)生毛刺現(xiàn)象，嚴(yán)重影響未合片前鋁間隔條的外觀。

　　(2) Due to the generation of a large number of tiny bubbles, the surface brightness of the adhesive strip is affected, resulting in burrs and seriously affecting the appearance of the aluminum spacer strip before lamination.

　　因此消除氣泡的產(chǎn)生在中空玻璃的生產(chǎn)過程中顯得尤為重要。

　　Therefore, eliminating the generation of bubbles is particularly important in the production process of insulating glass.

　　1成品丁基膠內(nèi)部存在氣泡

　　There are bubbles inside the finished butyl rubber

　　因丁基膠為半固體粘稠狀不干膠，在生產(chǎn)過程中如果混入氣泡不加以處理或處理不徹底而把氣泡存留在膠體中，在涂布過程中氣泡可隨膠體從涂膠頭排出從而影響涂布質(zhì)量。

　　Due to the semi-solid viscous nature of butyl adhesive, if bubbles are mixed in during the production process and left in the gel without proper treatment or incomplete treatment, the bubbles can be discharged from the coating head along with the gel during the coating process, thereby affecting the coating quality.

　　2膠缸中未清凈

　　Unclean in 2 rubber cylinders

　　膠缸中丁基膠沒有排凈即更換加入新的丁基膠。

　　The butyl rubber in the rubber cylinder was not completely drained and replaced with new butyl rubber.

　　據(jù)涂布在線了解，如果在膠缸中存在丁基膠的情況下退出活塞，具有優(yōu)良粘接性的丁基膠。

　　According to Coating Online, if there is butyl rubber in the rubber cylinder and the piston exits, it has excellent adhesion.

　　在膠缸底部和活塞上會形成山峰狀，而在推人新的丁基膠后，膠缸和活塞粘接的山峰狀丁基膠與新的丁基膠之間會存在大量氣泡，區(qū)別只不過是活塞處氣泡比膠缸底部氣泡少一些。

　　A mountain peak shape will form at the bottom of the rubber cylinder and the piston, but after pushing a new butyl rubber, there will be a large number of bubbles between the mountain peak shaped butyl rubber bonded to the rubber cylinder and the piston and the new butyl rubber. The only difference is that there are fewer bubbles at the piston than at the bottom of the rubber cylinder.

　　因此在涂膠過程中表現(xiàn)為剛剛換膠后氣泡較大，毛刺較多，而在將近結(jié)束時(shí)，氣泡較少的現(xiàn)象。

　　Therefore, during the glue application process, there are larger bubbles and more burrs immediately after changing the glue, while towards the end, there are fewer bubbles.

　　3直徑相差太大

　　3. The diameter difference is too large

　　如果丁基膠直徑大大小于膠缸直徑，丁基膠與膠缸內(nèi)壁存在較大空間并充斥著大量空氣，丁基膠在活塞強(qiáng)大的機(jī)械力擠壓下，膠體外壁不規(guī)則向外膨脹，把部分空氣擠壓封閉在膠體與缸壁之間。

　　If the diameter of the butyl rubber is significantly smaller than the diameter of the rubber cylinder, there will be a large space between the butyl rubber and the inner wall of the rubber cylinder, and a large amount of air will be filled. Under the strong mechanical force of the piston, the outer wall of the butyl rubber will expand irregularly outward, sealing some of the air between the rubber and the cylinder wall.

　　據(jù)涂布在線了解，雖然在擠壓過程中會有部分空氣從活塞與缸壁之間的縫隙中排出，但被封閉的空氣由于丁基膠的阻礙，不能排出，導(dǎo)致在丁基膠涂布過程中間隔一定時(shí)間就會有氣泡產(chǎn)生。

　　According to Coating Online, although some air is discharged from the gap between the piston and the cylinder wall during the extrusion process, the enclosed air cannot be discharged due to the obstruction of butyl rubber, resulting in the generation of bubbles at certain intervals during the butyl rubber coating process.

　　4膠缸和膠頭溫度過高

　　4. The temperature of the rubber cylinder and rubber head is too high

　　由于丁基膠內(nèi)部存在大分子有機(jī)物質(zhì)，如果溫度過高，有機(jī)物質(zhì)會發(fā)生裂解，產(chǎn)生小分子物質(zhì)，其中一些在高溫下以氣態(tài)形式存在，如果此時(shí)丁基膠涂布操作，排出膠頭后，即高溫高壓狀態(tài)下的氣體突然降壓，其體積會迅速膨脹，產(chǎn)生大量微氣泡，使膠條表現(xiàn)為毛刺現(xiàn)象。

　　Due to the presence of high molecular weight organic substances inside butyl rubber, if the temperature is too high, the organic substances will undergo cracking, producing small molecule substances, some of which exist in gaseous form at high temperatures. If the butyl rubber coating operation is carried out at this time, after the rubber head is discharged, the gas under high temperature and high pressure suddenly drops in pressure, and its volume will rapidly expand, producing a large number of microbubbles, causing the rubber strip to show a burr phenomenon.

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