GB/T 1981.6-2014Varnishes used for electrical insulation - Part 6: Environment-friendly water or emulsion based impregnating varnishes (English PDF)

1 Scope

GB/T 1981 This section provides environmentally friendly water-based varnish requirements, test methods, inspection rules, packaging, labeling, storage and transport.

This section applies to environmentally friendly water-soluble varnish and varnish water and milk.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein

Member. For undated references, the latest edition (including any amendments) applies to this document.

Determination matter content GB/T 1725-2007 Paints, varnishes and plastics non-volatile

GB/T 1981.1-2007 electrical insulating paints - Part 1. Definitions and general requirements

GB/T 1981.2-2009 electrical insulating paints - Part 2. Test methods

GB/T 4074.7-2009 Winding wires - Test methods - Part 7. Test methods for temperature index of enamelled winding wires Determination

GB/T 6109.2-2008 enamelled round winding wire - Part 2. 155 polyester enamelled round copper wire

GB/T 6109.5-2008 enamelled round winding wire - Part 5. 180 polyester enamelled round copper wire

Impregnating agents to an enamelled wire substrate bond strength test method GB/T 11028 Determination

GB/T 23986-2009 Paints and varnishes volatile organic compounds (VOC) content by gas chromatography

3 Requirements

All materials one delivery, in addition shall comply with the requirements of GB/T 1981.1-2007 prescribed, it should also comply with this section in Table 1

Requirements.

Table 1. environmentally friendly water-based varnish requirements

No. Performance Unit

Claim

Milk water soluble varnish varnish

1 Appearance -

Yellow light brown uniform liquid, no

Mechanical impurities and undissolved

Granule

Uniform milky white liquid, inorganic

Mechanical impurities and undissolved

Granule

2 Flash point °C >=93 >=100

3 Viscosity (Tu -4 viscometer, 23 °C ± 1 °C) as 40 ~ 110 20 ~ 80

4 pH values - 6.5 to 9.0 6.5 to 9.0

5 Non-volatile content (130 °C ± 2 °C, 1h) a% 30 ± 3 50 ± 5

6 VOC% <=15 <=5