打膠過程中出現(xiàn)花膠現(xiàn)象怎么辦？
運(yùn)用硅酮構(gòu)造密封膠時(shí)，在打膠施工現(xiàn)場(chǎng)，經(jīng)常會(huì)遇到這些問題：打膠機(jī)出膠速度慢，表干拉斷時(shí)間太快或太慢、打膠過程中呈現(xiàn)“花膠”、 結(jié)皮或硫化現(xiàn)象等。
When using silicone to construct sealant, these problems often occur in the construction site of gluing: the gluing speed of gluing machine is slow, the breaking time of surface drying is too fast or too slow, the phenomenon of "floral glue", "crust" or vulcanization appears in the gluing process.
當(dāng)發(fā)現(xiàn)這些問題反響會(huì)想到膠的質(zhì)量問題，從而可能由于投訴以要改換的問題而攪擾。
When these problems are found, the first reaction will be the quality of the glue, which may be disturbed by complaints and even the problem of brand change.
其實(shí)招致這些現(xiàn)象呈現(xiàn)的狀況還與其他要素有關(guān)，詳細(xì)的判別、掃除可能要素并實(shí)驗(yàn)比照能夠快速的處理以上問題，到達(dá)事半功倍的效果。
In fact, the situation that causes these phenomena is also related to other elements. Detailed identification, elimination of possible elements and experimental comparison can quickly deal with the above problems and achieve twice the result with half the effort.
1. 打膠機(jī)出膠速度慢
1. The gluing speed of the gluing machine is slow.
產(chǎn)品在初次運(yùn)用時(shí)，打膠機(jī)打膠過程中呈現(xiàn)出膠速渡過慢的現(xiàn)象，可能緣由有三個(gè)：⑴A組分活動(dòng)性差⑵壓盤過大⑶氣源壓力不夠。
When the product is used for the first time, the glue speed of the glue beater passes too slowly during the gluing process, which may be due to three reasons: poor activity of component A, too large pressure plate and insufficient gas source pressure.
針對(duì)緣由⑴或緣由⑶，我們能夠經(jīng)過調(diào)整膠槍壓力來(lái)處理；針對(duì)緣由⑵，訂購(gòu)大口徑桶能夠使問題得到處理。若出膠速度慢呈現(xiàn)在正常運(yùn)用過程中，則可能是混合芯和過濾網(wǎng)被梗塞，一旦發(fā)現(xiàn)，就需求及時(shí)清算設(shè)備。
For reason (1) or reason (3), we can deal with the problem by adjusting the pressure of the rubber gun; for reason (2), ordering large caliber barrels can solve the problem. If the speed of glue production is slow in the normal operation process, it may be that the mixing core and filter are obstructed, once found, the need for timely liquidation equipment.
2. 打膠過程中呈現(xiàn)“花膠”
2. Presenting "floral glue" in the process of gluing
花膠是由于A/B組分膠體混合不平均而產(chǎn)生的，表現(xiàn)為固化慢或部分有白色條紋。
Flower gum is produced by the uneven mixing of colloids of A/B component, which is characterized by slow curing or partly white streaks.
主要緣由有：⑴打膠機(jī)B組分管道梗塞⑵靜態(tài)混合器長(zhǎng)時(shí)間未清洗⑶比例尺松動(dòng)，出膠速度不平均⑷換廠家或牌號(hào)未調(diào)整設(shè)備工藝參數(shù)⑸改換后的產(chǎn)品擠出性不好，設(shè)備未順應(yīng)⑹混用不同廠家不同牌號(hào)的A、B組分。
The main reasons are: (1) Pipeline infarction of component B of glue beater; (2) static mixer has not been cleaned for a long time; (3) scale loosening; (4) the speed of glue production is uneven; (4) the process parameters of the equipment have not been adjusted by the manufacturer or the brand; (3) the extrusion performance of the product after the change is not good, and the equipment does not conform to (3) mixing different brands of component A and B from different manufacturers.
針對(duì)緣由⑴、⑵，能夠經(jīng)過清洗設(shè)備來(lái)處理；針對(duì)緣由⑶，則需求檢查比例控制器，并停止恰當(dāng)?shù)恼{(diào)整；針對(duì)緣由⑷、⑸，在保證參數(shù)正確的前提下，運(yùn)用1-2天后設(shè)備會(huì)逐步順應(yīng)。
For reasons_and_, it can be processed by cleaning equipment; for reasons_, it is necessary to check the proportional controller and stop the appropriate adjustment; for reasons_and_, the equipment will gradually adapt after 1-2 days of operation on the premise of ensuring the correct parameters.
3. 打膠過程中膠體呈現(xiàn)結(jié)皮或硫化現(xiàn)象
3. Colloids crust or vulcanize during beating
當(dāng)雙組份膠在混合過程中就發(fā)作部分固化時(shí)，膠槍打出來(lái)的膠就會(huì)呈現(xiàn)結(jié)皮或硫化現(xiàn)象。呈現(xiàn)這一現(xiàn)象的緣由主要有三種：
When the two-component glue is partially cured during mixing, the glue produced by rubber gun will appear crust or vulcanization. There are three main reasons for this phenomenon:
?、拍z體顏色較黑，固化快時(shí)，可能是由于B組分比例過高，過多的催化劑促使固化速度加快。此時(shí)，需求恰當(dāng)降低B組分的比例，將結(jié)皮或硫化膠沖洗潔凈后施工；
(1) When the colloid is black and solidified quickly, it may be due to the high proportion of B component, and the excessive catalyst promotes the speed of solidification. At this time, it is necessary to reduce the proportion of B component appropriately and rinse the crust or vulcanizate before construction.
?、迫舸蚰z過程中伴有出膠慢的現(xiàn)象時(shí)，可能是混合芯長(zhǎng)時(shí)間未清洗或清洗不徹底，膠體結(jié)皮梗塞管道。因而，定期清洗靜態(tài)混合器是很有必要的。
(2) If the gelling process is accompanied by slow gelling, it may be that the mixing core has not been cleaned for a long time or is not thoroughly cleaned, and the gel crust obstructs the pipeline. Therefore, it is necessary to clean the static mixer regularly.
?、钱?dāng)固化和出膠速度均無(wú)異常，而打出的膠仍有結(jié)皮或硫化現(xiàn)象時(shí)，則可能是設(shè)備停機(jī)時(shí)間較長(zhǎng)，膠槍未清洗或洗槍不夠徹底，需求將結(jié)皮或硫化膠沖洗潔凈后后施工。
(3) When there is no abnormal curing and tapping speed, and there is still crust or vulcanization in the tapped rubber, it may be that the equipment has been shut down for a long time, the rubber gun has not been cleaned or the gun has not been cleaned thoroughly enough, so it is necessary to rinse the crust or vulcanizate before construction.
4、膠內(nèi)夾有氣泡
4. Bubbles in glue
普通而言，膠體自身是沒有氣泡的，膠體夾有的氣泡極可能是運(yùn)輸或施工過程中混入了空氣，如：⑴改換膠桶時(shí)排氣未排潔凈；⑵組分在上機(jī)后壓盤未壓下去，招致排泡不徹底。
Generally speaking, the colloid itself does not have bubbles, and the bubbles in the colloid are likely to be mixed with air during transportation or construction, such as: (1) the exhaust is not cleaned when changing the rubber drum; (2) the components are not pressed down on the pressure plate after the machine, resulting in incomplete defoaming.
因而，在運(yùn)用前排泡要徹底，運(yùn)用過程中應(yīng)正確操作打膠機(jī)，保證密封從而阻止空氣進(jìn)入。若疑心產(chǎn)品本身就帶有氣泡，能夠經(jīng)過蝴蝶實(shí)驗(yàn)來(lái)停止判別。
Therefore, in the use of front row foam to be thorough, the use of the process should be correctly operated glue beater, to ensure that the seal to prevent air from entering. If you suspect that the product itself has bubbles, you can stop discriminating by butterfly experiments.
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