当济南彩钢板作为夹芯板用途时，常常面临的一个问题是粘结。因为涂层在用于制作夹芯板时，涂层须与发泡剂有效结合，保证夹芯板的整体完好。一般来说，用户使用中遇到的较多粘结不良问题主要包括“粘不上”、“表面孔洞”。

When Jinan color steel plate is used as sandwich panel, one of the problems it often faces is adhesion. Because when the coating is used to make the sandwich panel, the coating must be effectively combined with the foaming agent to ensure the integrity of the sandwich panel. Generally speaking, many problems of poor adhesion encountered by users in use mainly include "non adhesion" and "surface holes".

“粘不上”

"Can't stick"

(1)胶水反应时间：用户在加工时胶水反应的时间长短都影响到发泡的效果，时间过长或过短发泡效果都不会太理想。

(1) Glue reaction time: The length of time the user reacts with the glue during processing will affect the foaming effect, and the foaming effect will not be ideal if the time is too long or too short.

(2)涂层质量：涂层的种类决定了涂层固化后的表面活性，会影响彩涂板与发泡剂的发泡效果。如果涂层活性基团较少发泡性能会受到影响。

(2) Coating quality: the type of coating determines the surface activity of the cured coating, which will affect the foaming effect of color coated boards and foaming agents. The foaming performance will be affected if the coating has fewer active groups.

(3)胶水质量：发泡用胶水一般由黑胶和白胶组成，白胶为带羟基的聚醚多元醇，黑胶为带氰酸酯的品，二者以一定比例混合后反应形成聚氨酯，也就是发泡材料。胶水中的有效成分严重影响产品发泡效果。如果为降低成本在白胶中加入其它物质或以较低的聚酯多元醇代替聚醚多元醇等都可能致发泡不良的情况发生

(3) Glue quality: the foaming glue is generally composed of black glue and white glue. The white glue is a polyether polyol with hydroxyl, and the black glue is a product with cyanate ester. The two react to form polyurethane, that is, foaming material, after mixing in a certain proportion. The effective ingredients in the glue seriously affect the foaming effect of the product. If other substances are added to white glue to reduce costs or polyether polyols are replaced by polyester polyols with lower prices, poor foaming may occur

(4)其它：发泡工艺、生产环境等也都是影响夹芯板成品质量的重要因素。

(4) Others: foaming process, production environment, etc. are also important factors affecting the quality of finished sandwich panels.

“表面孔洞”

"Surface hole"

(1)料温过高：在夏季如果操作人员对温度控制重视不够，料温有时超过发泡剂沸点，发泡剂过早气化，孔壁强度不够高，容易并泡成大气泡。

(1) Material temperature is too high: in summer, if the operator does not pay enough attention to temperature control, the material temperature sometimes exceeds the boiling point of the foaming agent, the foaming agent vaporizes prematurely, and the pore wall strength is not high enough, it is easy to form large bubbles.

(2)物料混合不均：用于发泡的聚氨酯泡沫组合物料如混合不均会导致泡沫各部分发泡不均，发泡不均的物料会相互挤压或拉伸，交界处泡孔也被拉伸并泡，从而形成气泡。

(2) Uneven mixing of materials: if the polyurethane foam combination materials used for foaming are mixed unevenly, it will lead to uneven foaming of all parts of the foam. The materials with uneven foaming will extrude or stretch each other, and the bubbles at the junction will also be stretched and foamed, thus forming bubbles.

(3)物料的流动性差：如果泡聚氨酯泡沫组合物料的流动性不好，发泡过程中并泡产生的气体不容易排出，板与泡沫界面的气泡就多，泡沫芯的整体密度差也大。

(3) Poor fluidity of materials: if the fluidity of polyurethane foam composite materials is not good, the gas generated by coalescence during the foaming process is not easy to be discharged, there are more bubbles at the interface between the board and foam, and the overall density difference of foam core is also large.

(4)其它：如泡沫组料本身配方、催化剂的品种及用量、发泡前板材表面有污染等因素也会引起气泡。

(4) Others: such factors as the formula of the foam component itself, the type and amount of catalyst, and the contamination of the plate surface before foaming can also cause bubbles.

用户在使用中经常遇到的另一个关于发泡的问题是发泡后“孔洞”问题就是以上讲解的这一样了，既虽然发泡后彩涂板粘结无问题，但夹芯板外观有轻微不规则突起，撕开钢板后发现聚氨酯夹芯层有不规则孔洞。您在使用前建议提前预防好这种事项！关注我们http://www.lxcaigang.com为您带来更多注意事项了解！

Another problem that users often encounter with regard to foaming in use is that the problem of "holes" after foaming is the same as explained above. Although there is no problem with the bonding of color coated boards after foaming, the sandwich panel has slightly irregular protrusions in its appearance. After tearing the steel plate, it is found that the polyurethane sandwich layer has irregular holes. You are advised to prevent such matters before use! Follow us http://www.lxcaigang.com Bring you more precautions to know!