GB/T 8141-2009Shellac for use in arms (English PDF)

1 Scope

This standard specifies the technical requirements, sampling, test methods, inspection rules and marking, packaging, storage and transportation of military suet films.

This standard applies to high-quality natural shellac gum as raw material, with hot filter, solvent processing for the military production sector dedicated purple film.

2 normative reference documents

The terms of the following documents are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard

Whether you can use the latest version of these files. For undated references, the latest edition applies to this standard.

Methods for sampling of shellac products GB/T 8142-2008

Test method for the product of the shellac product GB/T 8143-2008

3 technical requirements

Military suet film should meet the technical requirements given in Table 1.

Table 1 Technical requirements for military suet film

Indicator name requirements

Moisture /% <= 2.0

Color index/number <= 18

Hot ethanol insoluble matter /% <= 1.0

Thermal hardening time (170 ° C ± 0.5 ° C)/min 3 ~ 5

Softening point/°C >= 75

Water extract acidity (pH) 4.8 ~ 7.0

Waxy /% 1.5 ~ 4.0

Water soluble /% <= 0.5

Acid value/(mg/g) <= 73

Iodine value (g/100g) <= 20

Ash <= 0.4

Rosin may not be detected

Female may not be detected

Note. Military suet film should not contain other additives, if there are special requirements for further consultation.

4 Sampling

Sampling and sample preparation according to GB/T 8142-2008.