Q&A
色差
原因:
①環氧樹脂塗料主劑沉澱,未充分攬拌均勻;
②倒料在地面上,前後接觸時間過久;
③塗層厚薄不均,施工中途斷料; 施工工具不够或不是專
用。 施工人員數量不够,施工人員熟練程度不够:
④採用不同批號面漆。
預防方法:
①施工前主劑應先充分攪拌均勻;
②避免資料前後接觸間隔過久,盡可能整個操作協調有序且一次性施工完成;
③務必使用專用工具及合理組織足够的熟手施工人員;
④盡可能使用同一批號塗料。
表面不平整
原因:
①施工中雜質混人;
②地面不平整,起伏過大或施工地坪規格太薄;
③資料塗布時,已部份反應,粘度過大,甚至產生硬塊;
④施工中斷料,來不及銜接。
預捋防方法:
①環境力求清潔,石英砂應選擇顆粒均勻:
②地面處理平坦,並清潔乾淨,凹處須修補,附著物須清除,依實際情況選做適當規格地坪:
③資料前後塗布,須在可使用時間銜接完畢,以免超過使用時間,資料粘度過大而無法自然流平,或桶內殘存部份塗料產生少許硬塊,此時應更換新桶。
發白
原因:
①冬天油漆反應速度過慢,且固化劑與空氣反應產生白霧狀;
②在低溫多濕之場合施工;
③施工後遭水侵入。
預防方法:
①選擇適當固化劑;
②避免低溫多濕條件施工,不得已時應採取加溫除濕措施,如空調加溫降濕,暖風機加溫;
③避免施工後有水慢入,
環氧地坪剝離及破損
原因:
①底漆選擇不當,粘度太高,滲透性不够:
②重物墮落,油污面施工,交叉工作污染,無防水處理;
③塗料層間再塗時間過長;
④水泥層不密實,有水氣上升或基面含水率過大,
預防方法:
①選擇適當低粘度底漆,提高滲透力,形成與基面的複合結構,並進行小面積試驗底漆滲透力和附著力;
②選擇適當環氧系統及工藝施作,以增强耐衝擊性;
③每道塗層時間間隔為上一道塗層錶千可進人後即需施
工下一道塗層,避免交叉工作污染:
④地下水壓過高,應先施工防水層,基面含水率過大應先烘乾處理及選用親水性底漆。
氣泡及針孔
原因:
①混合後攪拌不勻、局部資料反應速度快:
②混合液粘度高,造成消泡太慢;
③氣溫太低或太高,消泡困難;
④地坪粗造多孔。
預防方法:
①選用產生較少機械氣泡的攪拌設備,充分混合均勻後,直靜置消泡3-5分鐘;
②中塗砂漿批補、中塗膩子批補、面漆批補封閉地坪砂孔
③塗布抹平時,表面不允許有目視之氣泡,如尚有氣泡,穿著釘鞋進入,用針刺或消泡滾簡消泡。
不幹或局部不幹
原因:
①溫度太低或濕度太高,不能正常完全固化反應
②主劑和I固化劑配比有誤,或未加固化劑時;
③固化劑有誤;
④主劑和固化劑混合時未攪拌均勻。
預防方法:
①避免低溫多濕條件施工,低溫下應選擇低溫反應的固化劑;
②主劑和固化劑必須嚴格按重量比例準確混合,合理使用配料桶;
③固化劑不能通用;
④主劑和固化劑必須充分攪拌均勻後施工,務必使用專業攪拌工具。
齒痕
原因:
①鏝刀鏝塗後,沒有再抹平;
②塗料粘度過高,流平性不佳;
③塗料反應過快;
④施工員少,塗料膠凝超出可使用時間或主劑與固化劑混合時重量配比有誤。
預防方法:
①正確使用鏝刀塗布均勻:
②選用粘度低、流平性好的塗料(尤其在冬天);
③夏季選擇反應不太快的塗料,按重量比準確混合且攪拌均勻:
④合理組織安排施工員的數量。
火山口
原因:
①下層有凹洞;
②下層有油污;
③塗料本身原因。
預防方法:
①施工前先用環氧中塗把凹洞修補平後再進行施工;
②將下層油污清除乾淨;
③選用合適的塗料。
露底
原因:
①塗料塗布厚度不够;
②塗料塗布不均勻;
③塗料本身遮蓋力不佳;
④面塗前的塗層遮蓋力不够:
⑤基面平整度落差大;
⑥施工人員熟練度不够或施工人員數量不够。
預防方法:
①漆膜須達到足够厚度
②漆膜均勻塗布;
③選用足够遮蓋力的塗料;
④提高面塗前塗層的遮蓋力;
⑤先做基面找平層;
⑥合理組織足够的熟手施工人員。
起水泡
原因:
①結構體地下層、水箱旁、底樓層或其它地面水氣和濕度偏大;
②沒做防水層處理或底漆封閉。
預防方法:
①施工前先以水份計協助判斷:
②水份及水壓太高的地點須做防水層處理:
③選擇親水性的環氧樹脂底漆。
備註:施工時間控制不够合理,每道塗層間隔時間控制有誤,上道塗層未幹而强行施工下道塗層或主劑與固化劑配比不準確和攪拌不够充分均勻就可能會造成膜收縮、起皺、色差、流平性不佳、剝離、油窩、亮度和硬度不够甚至發粘、不幹等諸多不良現象發生!!
Color difference
Reason:
① The main agent of epoxy resin coating precipitates and is not fully mixed evenly;
② Pouring the material onto the ground, with prolonged contact time between the front and back;
③ Uneven coating thickness and material breakage during construction; Insufficient or non specialized construction tools
Use it. The number of construction personnel is insufficient, and their proficiency is not high enough:
④ Use different batch numbers of topcoats.
Preventive measures:
① The main agent should be thoroughly mixed before construction;
② Avoid excessive contact between materials, and try to coordinate and complete the entire operation in an orderly and one-time manner;
③ Be sure to use specialized tools and organize sufficient skilled construction personnel in a reasonable manner;
④ Use the same batch of paint as much as possible.
Surface unevenness
Reason:
① Impurities mixed in during construction;
② The ground is uneven, with excessive undulations or the construction floor specifications are too thin;
③ During material coating, some reactions have occurred, resulting in excessive viscosity and even the formation of hard lumps;
④ Construction is interrupted and there is no time to connect.
Preventive measures:
① The environment should strive for cleanliness, and quartz sand should be selected with uniform particles:
② The ground should be treated flat and cleaned thoroughly, and any depressions should be repaired. Any attachments should be removed, and an appropriate specification of flooring should be selected based on the actual situation
③ The coating of materials before and after use must be completed within the usable time to avoid exceeding the usage time, the material viscosity being too high to naturally level, or the residual coating in the bucket producing a small amount of hard lumps. At this time, a new bucket should be replaced.
Turn pale
Reason:
① The paint reaction speed is too slow in winter, and the curing agent reacts with the air to produce a white mist;
② Construction in low-temperature and humid environments;
③ After construction, it was invaded by water.
Preventive measures:
① Select appropriate curing agent;
② To avoid construction under low temperature and high humidity conditions, heating and dehumidification measures should be taken as a last resort, such as air conditioning to reduce humidity and heating with a heater;
③ Avoid slow entry of water after construction,
Epoxy floor peeling and damage
Reason:
① Improper selection of primer, high viscosity, and insufficient permeability:
② Heavy object degradation, oily surface construction, cross operation pollution, and lack of waterproof treatment;
③ The re coating time between coating layers is too long;
④ The cement layer is not dense, and there is water vapor rising or excessive moisture content in the base surface,
Preventive measures:
① Select a suitable low viscosity primer to improve penetration and form a composite structure with the base surface, and conduct small-scale tests on the primer's penetration and adhesion;
② Select appropriate epoxy systems and processes to enhance impact resistance;
③ The time interval for each coating is the same as the previous coating, and it needs to be applied immediately after entering
Apply the next layer of coating to avoid cross operation pollution:
④ If the groundwater pressure is too high, a waterproof layer should be constructed first. If the moisture content of the base surface is too high, it should be dried first and a hydrophilic primer should be selected.
Bubbles and pinholes
Reason:
① Uneven mixing and fast reaction rate of local materials after mixing:
② The high viscosity of the mixed liquid causes slow defoaming;
③ The temperature is too low or too high, making it difficult to remove bubbles;
④ The floor is rough and porous.
Preventive measures:
① Select a stirring device that produces fewer mechanical bubbles, mix thoroughly and evenly, and let it stand for 3-5 minutes to eliminate bubbles;
② Apply intermediate mortar batch, intermediate putty batch, and topcoat batch to seal the sand holes on the floor
③ During coating and smoothing, there should be no visible bubbles on the surface. If there are still bubbles, wear spiked shoes and use needles or defoamers to remove them.
Not working or partially not working
Reason:
① The temperature is too low or the humidity is too high, which prevents the complete curing reaction from occurring normally
② When the ratio of the main agent to the curing agent is incorrect, or when no curing agent is added;
③ Incorrect curing agent;
④ The main agent and curing agent were not stirred evenly when mixed.
Preventive measures:
① Avoid construction under low temperature and high humidity conditions, and choose curing agents that react at low temperatures;
② The main agent and curing agent must be accurately mixed strictly according to the weight ratio, and the ingredient bucket should be used reasonably;
③ Curing agents cannot be used universally;
④ The main agent and curing agent must be thoroughly mixed before construction, and professional mixing tools must be used.
Indentation
Reason:
① After applying with a trowel, it was not smoothed again;
② The viscosity of the coating is too high and the leveling performance is poor;
③ The coating reacts too quickly;
④ There are few construction workers, and the coating adhesive has exceeded its usable time or the weight ratio of the main agent and curing agent is incorrect when mixed.
Preventive measures:
① Apply evenly with a trowel correctly:
② Choose coatings with low viscosity and good leveling properties (especially in winter);
③ Choose coatings that do not react quickly in summer, mix them accurately by weight and stir evenly:
④ Reasonably organize and arrange the number of construction workers.
Crater
Reason:
① There are concave holes in the lower layer;
② There is oil pollution in the lower layer;
③ The reason for the coating itself.
Preventive measures:
① Before construction, use epoxy coating to repair and level the concave holes before proceeding with the construction;
② Clean the lower oil stains thoroughly;
③ Choose appropriate coatings.
Expose the bottom
Reason:
① Insufficient coating thickness;
② Uneven coating of paint;
③ The coating itself has poor coverage;
④ Insufficient coverage of the coating before topcoat:
⑤ The flatness difference of the base surface is large;
⑥ Insufficient proficiency or quantity of construction personnel.
Preventive measures:
① The paint film must reach a sufficient thickness
② Uniform coating of paint film;
③ Select coatings with sufficient coverage;
④ Improve the coverage of the coating before surface coating;
⑤ First, make a base leveling layer;
⑥ Reasonably organize sufficient skilled construction personnel.
Get blisters
Reason:
① The underground level, water tank side, bottom floor or other ground level of the structure have high water vapor and humidity;
② Not treated with waterproof layer or sealed with primer.
Preventive measures:
① Before construction, use a moisture meter to assist in determining:
② Waterproof layer treatment is required for locations with high moisture and water pressure:
③ Choose a hydrophilic epoxy resin primer.
Note: The construction time control is not reasonable enough, and the interval time between each coating is controlled incorrectly. Forcefully applying the next coating before the previous coating is dry or the main agent and curing agent ratio is not accurate and the mixing is not sufficient and uniform, which may cause many adverse phenomena such as film shrinkage, wrinkling, color difference, poor leveling, peeling, oil pits, insufficient brightness and hardness, and even sticking and not drying!!