Anti-pollution Flashover Coatings Home - Products - Anti-pollution Flashover Coatings
                                               

                                                 

                                                  The scope of application: This product is widely used for the outside insulated equipment in 10kV-500kV high voltage transmission and transformation systems of electric power (line insulators, insulating sleeves, post insulators, current and voltage transformers, etc). It can also be used for the outside insulation of electric equipment in special environment. The function and feature: High hydrophobicity Excellent anti-corrosion performance Special surface performance Special non-stick pollution performance Excellent physical and mechanical property Resistance to heat and cold Non-inflammable, non-explosive and non-poisonous The method of use: The product can be used by spraying, also brushing. Regular cleaning, decontaminating, deoiling and degreasing should be carried out on the porcelain surface before painting in order to keep clean. After opening the container of the product, it is be sprayed repeatedly by painting equipment on the clean porcelain surface, ensuring the thickness of over 0.4mm. The coating can cure spontaneously into film in the air. The remaining coating should be sealed well for using again and storage life is no more than 12 months. Notes: 1. This product gets cured in the air. Take care of the seal and preservation. Take care of the anti-fire in the transport and construction. 2. Shake it well before use. 3. It is used when it is fine. The coat layer should be even. 4. It is transported according to the marks on the packing box under the dry, cool, safe and dark conditions. 5. Take care of the environment protection. Do not dump and discard this product and its package. Applicable standards: DL/627-2004《Normal temperature curable silicone rubber anti-pollution flashover coating for insulator》; The enterprise standard of North China Grid Co., Ltd; The enterprise standard of Liaoning Hualong Electric Power Technology Co., Ltd

                                              主要技術性能指標

                                              序號

                                              項目

                                              性能

                                              DT/T 627-1997標準

                                              T-1

                                              B-1

                                              B-2

                                              H-1

                                              1

                                              外觀檢查

                                              無明顯機械雜質,無絮狀沉淀,固化后應平整光滑無氣泡

                                              透明
                                              粘稠液體

                                              白色
                                              粘稠液體

                                              白色
                                              粘稠液體

                                              紅色
                                              粘稠液體

                                              2

                                              固體含量檢查(%)

                                              ≥22

                                              53.75

                                              57.73

                                              50.81

                                              56.39

                                              3

                                              粘度試驗(S)

                                              15-60

                                              20

                                              32

                                              27

                                              28

                                              4

                                              表面電阻率試驗(Ω)

                                              ≥1╳1012

                                              3.26╳1016

                                              0.49╳1015

                                              5.7╳1016

                                              1.71╳1016

                                              體積電阻率試驗(Ω.m)

                                              ≥1╳1014

                                              3.73╳1016

                                              3.70╳1015

                                              1.24╳1015

                                              2.01╳1016

                                              5

                                              相對介電常數試驗

                                              ε≤3.0

                                              2.76

                                              2.55

                                              2.56

                                              2.56

                                              介損正切值試驗(%)

                                              tg≤0.3

                                              0.183

                                              0.193

                                              0.263

                                              0.257

                                              6

                                              擊穿場強試驗(MV/m)

                                              ≥15

                                              27.1

                                              24.8

                                              25.1

                                              26.1

                                              最大偏差(%)

                                              <5

                                              2.9

                                              2.4

                                              2.4

                                              3.8

                                              7

                                              耐漏電起痕及電蝕損性試驗

                                              ≥TMA2.5級

                                               

                                              1A2.5級

                                              1A2.5級

                                              1A2.5級

                                              8

                                              附著力試驗

                                              不低于2級

                                              1級(畫圈法)

                                              1級(畫圈法)

                                              1級(畫圈法)

                                              1級(畫圈法)

                                              9

                                              耐磨性試驗(g)

                                              ≤0.05

                                              0.0330

                                              0.0302

                                              0.0145

                                              0.0190

                                              10

                                              吸水率試驗(%)

                                              ≤0.25

                                              0.187

                                              0.207

                                              0.083

                                              0.167

                                              11

                                              憎水性喪失和恢復試驗
                                              (遷移前憎水角)

                                              >90o

                                              100.7o

                                              105.7o

                                              103.0o

                                              103.3o

                                              帶污層的憎水性恢復試驗
                                              (遷移后憎水角)

                                              >90o

                                              129.7o

                                              134.3o

                                              134.0o

                                              129.7o

                                              12

                                              耐腐蝕試驗

                                              酸、堿、鹽和變壓器油作用下無起皺、脫落、起泡、變色等

                                              合格

                                              合格

                                              合格

                                              合格

                                              13

                                              工頻干閃電壓試驗
                                              (有涂料/無涂料)

                                              有涂料絕緣子相對無涂料絕緣子不得降低

                                              105.3/104.7

                                              106.7/104.7

                                              108.0/104.7

                                              109.7/104.7

                                              工頻濕閃電壓試驗
                                              (有涂料/無涂料)

                                              69.9/57.6

                                              67.9/57.6

                                              66.8/57.6

                                              69.4/57.6

                                              14

                                              耐污閃試驗(鹽密0.1mg/cm2、灰密1.0mg/cm2)

                                              U1(有涂層)/U2(無涂層)≥1.5

                                              2.02

                                              2.`12

                                              2.12

                                              2.13

                                              耐污閃試驗(鹽密0.4mg/cm2、灰密1.0mg/cm2)

                                              U1(有涂層)/U2(無涂層)≥1.5

                                              2.31

                                              2.43

                                              2.56

                                              2.6

                                              15

                                              耐溫變性試驗

                                              耐5次溫度循環(-40-80 ℃,2.5h)試驗而不損壞,附著力不大于2級

                                              1級

                                              1級

                                              1級

                                              1級

                                              16

                                              硫化時間試驗

                                              表干(手感法)≤30min

                                              15min

                                              23min

                                              20min

                                              23min

                                              表干(小球法)≤30min

                                              19min

                                              28min

                                              23min

                                              26min

                                              固化時間≤7天(168h)

                                              8h

                                              14h

                                              11h

                                              13h

                                               
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