1. what is powder coating ? 

Powder coating is a type of coating that is applied as a free-flowing, dry powder. The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form. The coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a "skin". The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly used for coating of metals. 

粉末噴涂是用噴粉設(shè)備（靜電噴塑機(jī)）把粉末涂料噴涂到工件的表面，在靜電作用下，粉末會(huì)均勻的吸附于工件表面，形成粉狀的涂層，金屬鋁型材上經(jīng)過(guò)200℃以上高溫?zé)竞蠓蹱钗锕袒蔀橐粚蛹s60微米厚堅(jiān)固光亮的涂層。使產(chǎn)品表面平整光滑色澤均勻具極強(qiáng)的耐酸性、耐堿性、耐撞性、耐磨損能長(zhǎng)期經(jīng)受強(qiáng)烈紫外輻射和酸雨的侵蝕不出現(xiàn)涂層粉化、褪色、脫落等現(xiàn)象。粉末噴涂鋁型材在正常條件下使用壽命達(dá)30年。其表面涂層在5-10年內(nèi)保證不褪色、不變色、不龜裂。其耐候性及而腐蝕性均優(yōu)于普通鋁材顏色多樣化。 

 

2. what is anodizing? 

Anodizing (also spelled anodising, particularly in the UK and Australia) is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. 

Aluminium alloys are anodized to increase corrosion resistance and to allow dyeing (coloring), improved lubrication, or improved adhesion. Anodizing produces a very regular and uniform coating. Some aluminium aircraft parts, architectural materials, and consumer products are anodized. Anodized aluminium can be found on smartphones, multi-tools, flashlights, cookware,cameras, sporting goods, window frames, in electrolytic capacitors, and on many other products both for corrosion resistance and the ability to retain dye. Although anodizing only has moderate wear resistance, the deeper pores can better retain a lubricating film than a smooth surface would. 

陽(yáng)極氧化是指在鋁及鋁合金表面鍍一層致密氧化鋁為了防止進(jìn)一步氧化，其化學(xué)性質(zhì)與氧化鋁相同。但是與一般的氧化膜不同，陽(yáng)極氧化鋁可以用電解著色加以染色?？娠@著改善鋁合金的耐蝕性能，提高鋁合金的表面硬度和耐磨性,經(jīng)過(guò)適當(dāng)?shù)闹幚砗缶哂辛己玫难b飾性能。 

鋁及其合金陽(yáng)極氧化膜著色技術(shù)常用有：化學(xué)染色和電解著色?；瘜W(xué)染色是利用氧化膜層的多孔性與化學(xué)活性吸附各種色素而使氧化膜著色。 電解著色是將陽(yáng)極氧化后的鋁及其合金在含有金屬鹽的水溶液中進(jìn)行交流電解，在氧化膜多孔層的底部沉積金屬、金屬氧化物或金屬化合物,由于電沉積物對(duì)光的散射作用而呈現(xiàn)各種色彩。 

 

3. what is electrophoresis？  

Electrophoresis is the motion of dispersed particles relative to a fluid under the influence of a spatially uniform electric field. The technique applies a negative charge so proteins move towards a positive charge. It is ultimately caused by the presence of a charged interface between the particle surface and the surrounding fluid. 

把氧化鋁材為陽(yáng)極，置于水溶性的乳膠液中，通以直流電，人為地在鋁材氧化膜的表面沉積成涂漆膜保護(hù)層從而形成電泳鋁材。 高檔電泳鋁材主要特點(diǎn)： 

1、具有很強(qiáng)的漆膜硬度、抗沖擊力強(qiáng)。 2、具有很高的漆膜附著力，不易脫落老化。 3、比氧化鋁材有更強(qiáng)的耐磨性、耐候性、耐堿性。 4、表面色彩豐富、靚麗，具有鏡面般的光澤效果。