GB/T 21782.14-2010Coating powders -- Part 14: Terminology (English PDF)

Foreword

GB/T 21782 "powder coating" is composed of 14 parts, the structure and corresponding international standards are as follows.

--- Part 1. Determination of particle size distribution by sieving (ISO 8130-1:1992, IDT);

--- Part 2. Comparison of the proportion of instrument gas density determination (ISO 8130-2:1992, IDT);

--- Part 3. Determination of liquid displacement pycnometer density (ISO 8130-3:1992, IDT);

--- Part 4. lower explosion limit calculations (ISO 8130-4:1992, IDT);

--- Part 5. Powder air mixture flow measurement (ISO 8130-5:1992, IDT);

Measured at a given temperature thermosetting powder coating of gel time (ISO 8130-6.:1992, IDT) --- Part 6;

--- Part 7. Determination (ISO 8130-7:1992, IDT) mass loss during baking;

--- Part 8. Evaluation of the storage stability of thermosetting powders (ISO 8130-8:1994, IDT);

--- Part 9. Sampling (ISO 8130-9:1992, IDT);

--- Part 10. Determination of deposition efficiency (ISO 8130-10:1998, IDT);

--- Part 11. Determination of flow inclined plate (ISO 8130-11:1997, IDT);

--- Part 12. Determination of compatibility (ISO 8130-12:1998, IDT);

--- Part 13. Laser diffraction particle size analysis (ISO 8130-13:2001, IDT);

--- Part 14. Terminology (ISO 8130-14:2004, IDT).

This section GB/T 21782 Part 14.

This section uses the translation method identical with ISO 8130-14:2004 "powder coating Part 14. Terminology." for ease of use of ISO 8130-14:2004 in this section do major editorial changes as follows.

--- With "this Part" instead of "ISO 8130 part of this";

--- Delete international standards foreword.

This part is proposed by the China Petroleum and Chemical Industry Association.

This part of the National Standardization Technical Committee and the pigment coating (SAC/TC5) centralized.

Drafting this Part. Guangdong CIQ, CNOOC Changzhou coating Chemical Research Institute.

1 Scope

This section GB/T 21782 specifies the terms of powder coatings.

Other terms and definitions of paints and varnishes, see ISO 4618 "Paints and varnishes - Terms and definitions."

2 Terms and definitions

Caking agglomation

A plurality of individual particles are bonded together to form larger aggregates of the case.

Anti-ionization backionization Electrostatic repulsion electrostaticrejection/repulsion Excessive charge accumulation caused by electrostatic deposition powder in medium breakdown.

NOTE. This phenomenon is related with the coating rupture, resulting in the coating surface defects resulting in the entire film appears damaged.

Charge to mass ratio of charge-to-massratio Rate charge on its quality powder coatings.

NOTE. In order to achieve the requirements of the powder coating during coating, powder particles of charge to mass ratio of at least 10-4C · kg-1.

Grading classification the powder coating sample was divided into two parts, a part on a predetermined particle size, and partly beneath it.

Powder Coating coatingpowder Good dispersion state of thermoplastic or thermosetting resin particles, usually a mixture of pigments, fillers and additives, under appropriate storage conditions Still maintain state breakdown, after melting and solidifying to form a continuous film.

Compaction Agglomerated particles formed under pressure.

Deposition efficiency the ratio of the powder mass is deposited on a substrate with a powder spray quality.

Electrostatic fluidized bed it can make a powder sample stream of charged particles while allowing the device.

Electrostatic repulsion electrostaticrejection See 2.2 deionization.