本文僅部分展示，詳細(xì)咨詢請(qǐng)?jiān)L問彩涂卷廠家價(jià)格表www.caigangjuan.net進(jìn)行咨詢.天物彩板，功能性彩板定制開創(chuàng)者，專注彩板領(lǐng)域16年。主要從事彩板生產(chǎn)、銷售、 加工，全國配送。年生產(chǎn)能力30萬噸，服務(wù)過上千家企業(yè)，銷售網(wǎng)絡(luò)遍布全國。天物的產(chǎn)品定位是：根據(jù)彩板的使用環(huán)境、設(shè)計(jì)年限、結(jié)構(gòu)成型及客戶的需求，個(gè)性化定制，滿足客戶多元化需求。產(chǎn)品涉及PVDF氟碳彩板、HDP高耐候彩板、SMP硅改聚酯彩板、PE普通聚酯彩板、彩涂鋁卷等21個(gè)系列和品種。

通過對(duì)彩涂板的研究，找到了一種快速預(yù)測彩涂板涂層附著老化性能的試驗(yàn)方法。通過對(duì)實(shí)驗(yàn)的系統(tǒng)分析，發(fā)現(xiàn)涂料樹脂的結(jié)構(gòu)、基材的粗糙度、基材的種類以及彩涂板的預(yù)處理工藝對(duì)彩涂板涂料的附著力老化性能有很大的影響。提出了提高彩涂板涂層附著力老化性能的途徑。涂層附著力是評(píng)價(jià)彩涂板質(zhì)量的重要技術(shù)指標(biāo)。目前，人們普遍采用T形彎曲試驗(yàn)來表征涂層的附著力。

然而，彩涂板的應(yīng)用經(jīng)驗(yàn)表明，隨著儲(chǔ)存時(shí)間的增加，一些彩涂板的附著力會(huì)迅速惡化，影響彩涂板的正常使用。涂層附著力老化性能Zui直接的表現(xiàn)是涂層的T形彎曲試驗(yàn)結(jié)果隨貯存時(shí)間的增加而迅速下降。導(dǎo)致T型彎曲性能下降的主要因素是水、氧和離子在彩涂板存放的自然環(huán)境中的影響。

這種影響是一個(gè)緩慢的過程，需要一定的時(shí)間才能發(fā)生，并通過T形彎曲試驗(yàn)來顯示。這將導(dǎo)致彩涂板到達(dá)用戶手中后附著力差，對(duì)彩涂板的生產(chǎn)單位和用戶都會(huì)產(chǎn)生負(fù)面影響。本文通過加速模擬自然環(huán)境對(duì)涂層附著力的影響，得到了一種快速、準(zhǔn)確預(yù)測彩涂板涂層附著力老化性能的方法。

通過實(shí)驗(yàn)，得出了不同涂層體系附著力老化性能的變化規(guī)律。研究分析了影響涂層附著力老化性能的因素。提出了提高涂層附著力老化性能的途徑。彩涂板涂層附著老化性能的測定T型彎曲試驗(yàn)應(yīng)按彩涂鋼板和鋼帶試驗(yàn)方法在離線彩涂板上進(jìn)行。然后，將樣品在實(shí)驗(yàn)室中保存6個(gè)月，并進(jìn)行T形彎曲試驗(yàn)，以獲得涂層附著力半年的老化性能。

1.2離線彩涂板按彩涂鋼板和鋼帶試驗(yàn)方法進(jìn)行彩涂板T型彎曲試驗(yàn)涂層附著力和老化性能預(yù)測。然后將試樣放入恒溫恒濕試驗(yàn)箱進(jìn)行24小時(shí)加速老化試驗(yàn)，試驗(yàn)溫度為70，相對(duì)濕度為95%。涂層表面的水分子通過吸附、擴(kuò)散、滲透等作用到達(dá)涂層金屬基體的界面，直至涂層/金屬基體的界面被破壞。這種界面損傷的初始宏觀表現(xiàn)可能是涂層附著力下降，表現(xiàn)為涂層附著力老化性能差，進(jìn)一步的宏觀表現(xiàn)是涂層起泡脫落。因此，結(jié)合老化試驗(yàn)結(jié)果可以預(yù)測彩涂板的耐蝕性，對(duì)提高彩涂板產(chǎn)品質(zhì)量具有良好的預(yù)警作用。

Based on the study of color coated plate, a test method for fastprediction of adhesion aging performance of color coated platecoating was found. Through the systematic analysis of theexperiment, it is found that the structure of the coating resin,the roughness of the substrate, the type of the substrate and thepretreatment process of the color coated plate have a greatinfluence on the adhesion aging performance of the color coatedplate coating. The way to improve the adhesion aging property ofthe coating was put forward. Coating adhesion is an importanttechnical index to evaluate the of color coated plate. Atpresent, T-bend test is widely used to characterize the adhesion ofcoating.

However, the application experience of color coated plate showsthat with the increase of storage time, the adhesion of some colorcoated plates will deteriorate rapidly, which will affect thenormal use of color coated plates. The most direct performance ofthe coating adhesion aging performance is that the T-bend testresults of the coating decrease rapidly with the increase ofstorage time. The main factors that lead to the degradation ofT-bend properties are the influence of water, oxygen and ions inthe natural environment of color coated plate storage.

This kind of influence is a slow process, which takes a certaintime to occur, and it is shown by T-bend test. This will lead topoor adhesion after the color coated plate reaches the user'shands, which will have a negative impact on both the productionunit and the user of the color coated plate. In this paper, a fastand accurate method to predict the adhesion aging performance ofthe coating is obtained by accelerating the simulation of theinfluence of natural environment on the adhesion of thecoating.

Through the experiment, the change rule of adhesion agingperformance of different coating systems was obtained. The factorsinfluencing the adhesion aging property of the coating werestudied. The way to improve the adhesion aging property of thecoating was put forward. T-bend test shall be carried out on theoff-line color coated plate according to the test method of colorcoated steel plate and steel strip. Then, the samples were kept inthe laboratory for 6 months, and T-bend test was carried out toobtain the aging performance of coating adhesion for half ayear.

1.2 prediction of adhesion and aging performance of T-bend testcoating for off-line color coated plate shall be carried outaccording to the test method of color coated steel plate and steelstrip. Then put the sample into constant temperature and humiditytest chamber for 24 hours accelerated aging test, the testtemperature is 70, and the relative humidity is 95%. The watermolecules on the coating surface reach the interface of the coatingmetal matrix through adsorption, diffusion and penetration untilthe interface of the coating / metal matrix is destroyed. Theinitial macroscopic performance of this kind of interface damagemay be the decrease of coating adhesion, which is manifested as thepoor aging performance of coating adhesion, and the furthermacroscopic performance is the foaming and falling off of coating.Therefore, combined with the aging test results, the corrosionresistance of the color coated plate can be predicted, which has agood early warning effect on improving the of the colorcoated plate.