识别粉末喷涂涂料好坏的方法

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随着粉末喷涂涂料的发展和壮大，市场需求不断增加，粉末喷涂涂料的质量也开始发生变化。那么我们应该如何区分粉末涂料的质量呢？

1。 粉末喷涂人员操作标识方法：装粉率

装粉率好的粉状集料容易喷涂，基材可喷涂1-3枪，二次回收粉少，效率高。劣质粉末不利于粉末的应用。只有喷3-5枪才能覆盖基材。粉体回收率高，效率低。操作人员可以通过喷涂来确定粉末的速度，而落下的粉末量不多。同时，产品产量少，粉体二次回收多，操作人员负担大，效率低。

2。低端原材料质量不稳定，容易变质。用劣质原料生产粉末， 粉末喷涂表面半年后加速粉末、老化。另外，劣质粉末不易储存，造成粉末浪费大、费用高。

感觉

良好的粉手诱导，丝滑、蓬松、飘浮。劣质粉末摸起来粗糙、厚重。手握一把粉末，粉末越光滑，质量越好。相反，这种 粉末喷涂的粗糙手柄很重，质量很差。劣质粉体不易喷涂，二次落粉多，浪费大。

体积

体积越小，填料越高，成本越低，粉体质量越差。体积越大，填料越少，成本越高，粉体质量越好。同样重量，大的是好粉，小的是差粉。劣质粉末不易喷涂，二次落粉多，浪费大，涂布面积小，使用成本高。

3。 粉末喷涂区域识别方法：喷涂区域

普通粉末的树脂含量应在55-65%左右，树脂价格在20元/公斤左右，填充材料在2元左右。一些劣质粉厂用不到45%的树脂含量来补充劣质，增加填料以降低成本和喷涂面积。

比较方法：两种相同的 粉末喷涂产品，看哪一种粉末喷涂产品多，哪一种喷涂产品少，哪一种喷涂产品少，效果差，使用成本高。按每公斤喷粉6平方米计算，每少喷粉1平方米相当于厂家每公斤多支付3-6元。建议使用厂家的阳性针粉，并仔细核对实际使用成本。

4。烘烤标识方法：

烘烤标识主要是看是否有烟。好的粉末在烘烤过程中不会产生很多烟。劣质粉在烘烤时有很多烟。

5。粘附与老化识别方法：粘附与老化

粉体附着力好，韧性好，能保持几年无粉化、老化。粉末附着力差，很脆， 粉末喷涂后3个月至6个月开始老化、粉化。对比测试附着力和弯曲度，观察几个月后产品是否老化和粉状。附着力差，易老化，粉化，生锈，缩短产品使用寿命。

With the development and growth of powder coating, the market demand increases, and the quality of powder coating begins to vary. So how should we distinguish the quality of powder coating?

1. Operation identification method of spraying personnel: powder loading rate

The powder Ji with good powder loading rate is easy to spray, and the base material can be covered by spraying 1-3 guns, with less secondary recovery powder and high efficiency. Poor powder is not good for powder application. Only spray 3-5 guns can cover the base material. There are many powder recycled and low efficiency. The operator can determine the powder rate by spraying, and the amount of powder dropped is not much. At the same time, the output of products is less, the secondary recovery of powder is more, the burden of operators is increased, and the efficiency is low.

The quality of low-end raw materials is unstable and easy to deteriorate. Use poor raw materials to produce powder, spray surface after half a year to accelerate powder, aging. In addition, the poor powder is not easy to store, resulting in a large waste of powder and a large fee.

Feel

Good powder hand induction for silky smooth, Pengsong, floating. Bad powder feels rough, heavy and heavy. Grasp a handful of powder in hand, the smoother the powder is, the better the quality is. On the contrary, the rough handle of the powder is heavy, and the quality is poor. The powder with poor quality is not easy to spray, and there is much secondary powder falling, which leads to great waste.

volume

The smaller the volume is, the higher the filler is, the lower the cost is and the worse the powder quality is. The larger the volume is, the less the filler is, the higher the cost is and the better the powder quality is. With the same weight, the big one is good powder, and the small one is poor powder. Poor powder is not easy to spray, more secondary powder falling, large waste, less coating area, high use cost.

3. Spray area identification method: spray area

The resin content of normal powder should be about 55-65%, the resin price is about 20 yuan / kg, and the filling material is about 2 yuan. Some poor powder factories use less than 45% resin content to replenish the inferior, increase the filler to reduce the cost and spray area.

Comparison method: two same powder spraying products, see which one has more powder spraying products, which one has less spraying products, and which one has less spraying products is poor, so the use cost is high. According to the calculation of 6 square meters per kilogram of powder spraying, one square meter less spraying is equivalent to 3-6 yuan more per kilogram of powder paid by the manufacturer. It is recommended to use the manufacturer's positive pin powder, and carefully check the actual use cost.

4. Baking identification method:

Baking identification is mainly to see if there is smoke. Good powder does not produce a lot of smoke during baking. Poor powder has a lot of smoke during baking.

5. Adhesion and aging identification method: adhesion and aging

Good powder adhesion, toughness, and can maintain a few years of non powder, aging. Poor powder adhesion is poor, very brittle, three months to six months after spraying began to aging, powdering. Contrast test adhesion and bending, and observe whether the product is aged and powdered after a few months. Poor adhesion and aging, easy aging, powdering, rusting, shortening the service life of the product.