雙組份結(jié)構(gòu)膠混合不均勻怎么辦？
有機(jī)硅結(jié)構(gòu)膠粘劑在施工過程中存在四個常見問題:1。2. 緩慢固化;3.結(jié)構(gòu)膠粘劑粘接寬度不足;4. 結(jié)構(gòu)膠體中有氣泡和孔洞。如何避免雙組分有機(jī)硅結(jié)構(gòu)膠粘劑的不均勻混合?
There are four common problems in the construction of silicone structural adhesives: 1. 2. Slow curing; 3. Insufficient bonding width of structural adhesives; 4. There are bubbles and holes in structural colloids. How to avoid the uneven mixing of two-component organosilicon structural adhesives?
雙組份有機(jī)硅結(jié)構(gòu)膠由主劑A(白膠)和固化劑B(黑膠)組成，由雙組份配料機(jī)按廠家的比例均勻混合而成。經(jīng)過一段時間的固化，該混合結(jié)構(gòu)膠粘劑終獲得了良好的附著力和物理性能。但是，如果結(jié)構(gòu)膠使用后混合不均勻，結(jié)構(gòu)膠固化會出現(xiàn)質(zhì)量問題。
Two-component organosilicon structural adhesive is composed of main agent A (white gum) and curing agent B (black gum), which is evenly mixed by two-component batching machine according to the proportion recommended by the manufacturer. After curing for a period of time, the mixed structural adhesives obtained good adhesion and physical properties. However, if the mixing of structural adhesives is not uniform after use, the curing quality of structural adhesives will appear.
如何區(qū)分結(jié)構(gòu)膠的不均勻混合?結(jié)構(gòu)膠水混合不均勻，局部會出現(xiàn)白色條紋。在明亮的光線下看東西更容易。混合不均勻甚均勻的情況如下圖所示:
How to distinguish the uneven mixing of structural glue? The uneven mixing of structural glue results in white stripes locally. It's easier to see in bright light. The uneven or even uniform mixing is shown in the following figure:
當(dāng)結(jié)構(gòu)膠沒有混合均勻時會發(fā)生什么?結(jié)構(gòu)膠固化后強(qiáng)度降低，固化交聯(lián)不完全，嚴(yán)重時會產(chǎn)生粘性，無法固化。
What happens when the structural adhesives are not mixed evenly? The strength of the structural adhesives decreases after curing, the curing cross-linking is not complete, and when it is serious, the adhesives will become viscous and can not be cured.
結(jié)構(gòu)膠粘劑混合不均勻的原因是什么?如何?結(jié)構(gòu)膠粘劑混合不均勻的原因有四種
What are the reasons for the uneven mixing of structural adhesives? How? There are four reasons for the uneven mixing of structural adhesives.
(1)連續(xù)花膠:一般是攪拌塊，攪拌塊裝配錯誤或使用攪拌單元不夠;
(1) Continuous floral glue: usually mixing block, mixing block assembly error or the use of mixing unit is not enough;
(2)間歇規(guī)律的膠黏劑形態(tài):與系統(tǒng)失效有關(guān)，如泵密封件泄漏的比例或機(jī)架磨損的比例;
(2) Adhesive morphology with intermittent regularity: it is related to system failure, such as the proportion of leakage of pump seals or wear of rack;
(3)間歇不規(guī)則膠:與故障有關(guān)，如過濾器堵塞/針閥堵塞/壓盤故障/比泵進(jìn)口堵塞或密封故障/閥及高壓球閥故障;
(3) Intermittent irregular glue: related to faults, such as filter blockage/needle valve blockage/platen failure/specific pump inlet blockage or sealing failure/safety valve and high pressure ball valve failure;
(4)短時間停拍后，開始一段花膠:主要是粘度匹配不理想，需要調(diào)整系統(tǒng)管路或降低工作壓力。
(4) After a short pause, start a period of gum: the main reason is the unsatisfactory matching of viscosity, the need to adjust the system pipeline or reduce the working pressure.
通過對膠機(jī)的故障排除，解決了上述四種花膠情況。
Through troubleshooting of glue machine, the above four kinds of glue situation were solved.
如何避免結(jié)構(gòu)膠的不均勻混合?
How to avoid uneven mixing of structural adhesives?
上膠機(jī)應(yīng)定期保養(yǎng)，確保上膠機(jī)正常運行。每次開機(jī)前必須進(jìn)行蝶形試驗，確保結(jié)構(gòu)膠均勻混合。蝶形試驗方法如下:將打膠機(jī)打到混合膠擠到紙張中間5-10克，相當(dāng)于將紙張打平。打開紙，檢查膠水樣品。均勻混合的膠水應(yīng)該有相同的顏色條紋。如果膠水有不同的顏色條紋，說明膠水混合不均勻。
The glue machine should be regularly maintained to ensure the normal operation of the glue machine. Butterfly test must be carried out before each start-up to ensure uniform mixing of structural adhesives. The butterfly test method is as follows: beating the glue mixer into the middle of the paper and squeezing 5-10 grams, which is equivalent to flattening the paper. Open the paper and check the glue sample. A uniformly mixed glue should have the same color stripes. If the glue has different color stripes, the glue mixing is not uniform.
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