anti coating defect and 失效形式, causes analysis and anti measures （珍藏版 upper ）

industry: water property coating material

1, Abrasion scratch 伤（ machine loss 伤）

摩 scratch, scratch, 划伤, or abrasion and other machine loss 伤

can can causes: remove coating surface separation, or in heavy lower, through and material 体接触 暴露基质, used for heavy, material, sheet/plate or shipbuilding metal 链.

 预 anti measures: use 基于特珠 resin and material resistant machine loss coating material. in certain lower, use resistant machine loss coating material still has 限.

2, Adhesion Failure附 失效

coating and 基材间 or coating between 丧失附 force

can can causes: surface or cold 凝. coating system between versus 容. or ultra- most long coating time.

预 anti measures: ensure surface 清洁, drying, 不受任何污染, ensure surface 经 适当 处理. use positive coating material system, 并遵循建议 覆 coating time.

3, Alligatoring(Crocodiling) crazing (鳄纹)

non large 象鳄鱼皮 that cracks, cracks can can to lower coating or 者直至底材

can can causes: coating surface ratio internal shrinkage more fast generate force cracking. ultra-high film thick and has coating material flexibility property. will hard coating material coating in more soft coating upper. in lower coating drying front coating upper 道漆.

预 anti measures: use positive coating system and combined 适 材 material. thick. high temperature ring lower 施工.

4, Bleeding渗 color

can solvent understanding color material from coating material in expand dispersion coating surface generate defect color or color. in （含）沥青 or coating surface coating Common （因 is or is can solvent understanding ）, 也会发生 in 乳胶漆 in.

can can causes: strong/high solvent agent used for upper coating 时, lower coating or its formed full or separation by again solvent understanding formed.

预 anti measures: use positive coating system and coating material. use sleeve/set property good coating material. has can can, use combined 适 封闭漆.

5, Blistering起泡

因 is local 丧失附 force and from lower coating 顶起而形 formed 圆顶状突起. inner can can has liquid 体, 蒸汽, gas or 晶体

can can causes: multiple causes and mechanism 会导致起泡. and can solvent property salt, can solvent property material, 腐蚀产 material, solvent agent and material solvent agent has 关 渗透梯 degree. non water and anionic 极剥离, cold 壁效应 hot degree and pressure force has 关.

预 anti measures: ensure positive surface treatment and 施工. for can solvent property salt testing rear, using/adopting combined coating system. in ring in different causes and mechanism can can property.

6, Bloom (Blush)白华（ amine 霜）

coating film surface similar upper 花斑样 模糊 沉积. 结果导致 gloss and color dark.

can can causes:

coating film solid 化期间暴露 in cold or gas lower, especially is in low temperature 时（ amine solid ring oxygen 常出现此 phenomenon ）. positive solvent agent can 导致该 phenomenon.

预 anti measures:

in positive ring conditions lower and solid coating system, 并遵循 manufacturing 商 建议.

7, Bridging

use coating film cover/cap has filling 间隙(如缝隙 or 角落). 由此形 formed coating film defect can can can can cracking or 脱落.

can can causes:

不 positive 确 施工. high viscosity coating material system. 失败 角落 and upper coating 施工.

预 anti measures:

in 施工整 coating system front, has cracks and 焊缝. for and welding using/adopting coating 施工预 coating.

8, Bubbles or Bubbling bubbles

coating film inner bubbles 看起 就像 small water 泡一样. this can can is or 破碎 (留 lower 一 陨石坑). can in thick coating film upper 发现, especially is spray coating or coating 施工时 easy 发生. this 一点不应 and “起泡” versus mixed 淆

can can causes:

不 positive 确 施工. high viscosity coating material system. 失败 角落 and upper coating 施工.

预 anti measures:

in 施工整 coating system front, has cracks and 焊缝. for and welding using/adopting coating 施工预 coating.

9, Cathodic Disbonding anionic 极剥离

in has anionic 极保护 埋 pipeline, ring lower structure and upper, 裸钢部位 coating system 出现起泡 and phenomenon

can can causes:

strong/high made electrical 流保护 electrical pressure high, cationic more, positive 确 安装, defect and combined coating system.

预 anti measures:

using/adopting 经 良 good design anionic 极保护 system, 定期监测布局良 good ratio electrical 极, application resistant alkali property can good coating system.

10, Chalking powder 化

in film surface upper easy powder 状层. can to color or color. powder speed rate and material concentrated degree and adhesion agent selection related. powder is types certain coating material （例如 ring oxygen 漆） already features.

can can causes:

usually is formulation and / or technology issues. cracks generate and force development coating surface 变 脆 low and cracking. has coating material flexibility property.

预 anti measures:

using/adopting positive formed coating material system.

10, Chalking powder 化

in film surface upper easy powder 状层. can to color or color. powder speed rate and material concentrated degree and adhesion agent selection related. powder is types certain coating material （例如 ring oxygen 漆） already features.

can can causes:

in aging and / or outer light function lower, paint material understanding 体.

预 anti measures:

using/adopting resistant outer and resistant powder 化 面漆.

11, Checking fine 裂

coating system in upper fine small cracks. has cracks non fine small 以至于不经放 large 而看不 to.

can can causes:

usually is formulation and / or technology issues. cracks generate and force development coating surface 变 脆 low and cracking. has coating material flexibility property.  

预 anti measures:

using/adopting positive formed coating material system.  

12, Cissing shrink 孔

coating material rear, wet film in process in 出现回 shrink, 并暴露出 lower 面 基材. paint method lubricating wet 基材. can very large.

can can causes:

surface by cold or outer 秀质（如油, or has machine silicon type ）污染. use positive solvent agent mixed combined 时也会发生.

预 anti measures:

coating 装施工 front ensure surface 清洁, 不受油, and outer material 质污染.

13, Cobwebbing spray coating wire drawing

for certain polymer/macromolecule amount polymer solvent liquid spray coating 层, is can can is fine 绪维而不 is fine small pellets. using/adopting 传统空 gas spray coating chlorine 化橡胶 coating material 时.

can can causes:

polymer solvent liquid viscosity high. 常发生 in chlorine 化橡胶漆 upper.

预 anti measures:

reduce spray coating viscosity. selection more combined solvent agent. spray coating conditions.

14, Cracking cracking

dry film through less coating separation 离, formed can 见 裂缝, can to sheet/slice. cracking has multiple 形式, from fine to heavy cracking

can can causes:

cracking usually is and force related defect, can 归因于 surface 运动, aging, absorption and understanding water separation, and coating elastic property. thick film high, cracking can can property large.

预 anti measures:

use positive coating system, technology and dry film thick degree. or 者, using/adopting flexibility property good coating system.