GB/T 39821-2021 Active National standards

GB/T 39821-2021 Plastics—Determination of apparent density of moulding material that cannot be poured from a specified funnel

Publish Date: 2021-03-09 Implement Date: 2021-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 39821-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Thermosetting plastics

Publish Date: 2021-03-09

Implement Date: 2021-10-01

Pages: 5 pages

Scope

This standard specifies the apparent density of loose molding materials that cannot flow out of the specified funnel, that is, the method of determining the mass per unit volume. This standard is applicable to loose molding materials, such as powder or granular materials.

Development Information

Word Count: 8 Thousand words Pages: 5 pages

Adopt standards

ISO 61:1976

Related Standards

GB/T 4616-1984 Replaced

GB/T 4616-1984 Phenolic moulding materials—Determination of acetone-soluble matter (apparent resin content of material in the unmoulded state)

Publish Date: 1984-07-30

GB/T 4617-1984 Replaced

GB/T 4617-1984 Phenolic mouldings—Determination of acetone-soluble matter

Publish Date: 1984-07-30

GB/T 5471-1985 Replaced

GB/T 5471-1985 Preparation method for compression moulding of specimens of thermosetting moulding materials

Publish Date: 1985-10-17

GB/T 5472-1985 abolished_transferred

GB/T 5472-1985 Test method for rectangular flow cure properties of thermosetting moulding compounds

Publish Date: 1985-10-17

GB/T 5473-1985 Replaced

GB/T 5473-1985 Phenol-formaldehyde mouldings—Detection of free ammonia

Publish Date: 1985-10-17

GB/T 5474-1985 Replaced

GB/T 5474-1985 Phenol-formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison method

Publish Date: 1985-10-17