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淺談彩涂板用環氧底漆存在瓶頸時期

來源:http://www.ebassfish.com/ 日期:2021-05-06 發布人:jiangucaigang
隨著彩涂板工業的迅猛發展,開發性能優異的彩板涂料以滿足產品高 級化和多樣化需求,成為國內外研究的熱點。其中配制具有良好的附著力和柔韌性,以及與面漆良好配套性的底漆,對提高彩板涂料的性能至關重要。
With the rapid development of color board industry, the development of color board coatings with excellent performance to meet the needs of advanced and diversified products has become a research hotspot at home and abroad. It is very important to prepare the primer with good adhesion and flexibility, and good compatibility with the topcoat to improve the performance of color board coatings.
用電鍍鋅板為基板,涂上有機涂料烘烤所得的產品為電鍍鋅彩涂板,由于電鍍鋅板的鋅層薄,通常含鋅量為20/20g/m2,因此該產品不適合使用在室外制作墻、屋頂等。但因具有美麗的外觀和優良的加工性能,因此主要可用于家電、音響、鋼家具、室內裝璜等。
The galvanized sheet is used as the base plate, coated with organic coating, and the product is galvanized color coated sheet. Because the zinc layer of galvanized sheet is thin, the zinc content is usually 20 / 20g / m2, so the product is not suitable for outdoor production of walls and roofs. But because of its beautiful appearance and excellent processing performance, it can be mainly used in household appliances, audio, steel furniture, interior decoration, etc.
由于影響因素多,底漆的配制是一個復雜的過程。國內已有科研人員采用正交實驗法確定各個因素對環氧底漆性能的影響,從而用較少步驟合理地確定出好的配方,所制得漆膜具有明顯的硬度和耐溶劑性的優勢,同時附著力性能也好的。據專家介紹,他們重 點研究了選取顏基比、交聯劑用量、催化劑、消泡劑、降低表面活性助劑、濕潤分散劑6種影響因素。
Due to many factors, the preparation of primer is a complex process. Domestic researchers have used orthogonal experiment method to determine the influence of various factors on the performance of epoxy primer, so as to reasonably determine a good formula with less steps. The prepared film has obvious advantages of hardness and solvent resistance, and good adhesion. According to experts, they focused on the selection of pigment base ratio, amount of crosslinking agent, catalyst, defoamer, surfactant reducing agent and wetting dispersant.
15%時除了硬度和其它3水平相同外,其它性能都較差;20%時耐MEK擦拭性能和彎曲性能都好,附著力一般(均值1.3);25%時漆膜的耐MEK擦拭性能和硬度好,另外2種性能較差。
At 15%, the hardness is the same as the other three levels, but the other properties are poor; At 20%, the MEK Resistance and bending performance were good, and the adhesion was average (1.3); The MEK wiping resistance and hardness of the film are better when the content is 25%, while the other two are worse.
考慮到彩板的可加工性,科研人員選擇交聯固化劑用量20%。專家表示,上述研究開了個好頭,但還需深入研究,從而真 正突破彩涂板用環氧底漆瓶頸。實驗中4種用量對硬度的影響不明顯(均值都為5.0);交聯固化劑用量10%時附著力好(均值達到了0.3),耐MEK擦拭性能相對較差一些,彎曲性能較好。
Considering the processability of color board, researchers choose the dosage of crosslinking curing agent 20%. Experts said that the above research has made a good start, but further research is needed, so as to truly break through the bottleneck of epoxy primer for color coated boards. In the experiment, the effect of four kinds of dosage on hardness is not obvious (the average value is 5.0); When the amount of crosslinking curing agent is 10%, the adhesion is good (the average is 0.3), the MEK Resistance is relatively poor, and the bending property is better.
此文關鍵詞: 濟南彩涂板  

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