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?

　　双组份有机硅结构胶由主剂A(白胶)和固化剂B(黑胶)组成，由双组份配料机按厂家的比例均匀混合而成。经过一段时间的固化，该混合结构胶粘剂终获得了良好的附着力和物理性能。但是，如果结构胶使用后混合不均匀，结构胶固化会出现质量问题。

　　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.

　　如何区分结构胶的不均匀混合?结构胶水混合不均匀，局部会出现白色条纹。在明亮的光线下看东西更容易。混合不均匀甚均匀的情况如下图所示:

　　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:

　　当结构胶没有混合均匀时会发生什么?结构胶固化后强度降低，固化交联不完全，严重时会产生粘性，无法固化。

　　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.

　　结构胶粘剂混合不均匀的原因是什么?如何?结构胶粘剂混合不均匀的原因有四种

　　What are the reasons for the uneven mixing of structural adhesives? How? There are four reasons for the uneven mixing of structural adhesives.

　　(1)连续花胶:一般是搅拌块，搅拌块装配错误或使用搅拌单元不够;

　　(1) Continuous floral glue: usually mixing block, mixing block assembly error or the use of mixing unit is not enough;

　　(2)间歇规律的胶黏剂形态:与系统失效有关，如泵密封件泄漏的比例或机架磨损的比例;

　　(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)间歇不规则胶:与故障有关，如过滤器堵塞/针阀堵塞/压盘故障/比泵进口堵塞或密封故障/阀及高压球阀故障;

　　(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)短时间停拍后，开始一段花胶:主要是粘度匹配不理想，需要调整系统管路或降低工作压力。

　　(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.

　　通过对胶机的故障排除，解决了上述四种花胶情况。

　　Through troubleshooting of glue machine, the above four kinds of glue situation were solved.

　　如何避免结构胶的不均匀混合?

　　How to avoid uneven mixing of structural adhesives?

　　上胶机应定期保养，确保上胶机正常运行。每次开机前必须进行蝶形试验，确保结构胶均匀混合。蝶形试验方法如下:将打胶机打到混合胶挤到纸张中间5-10克，相当于将纸张打平。打开纸，检查胶水样品。均匀混合的胶水应该有相同的颜色条纹。如果胶水有不同的颜色条纹，说明胶水混合不均匀。

　　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.