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ASTM D705-99(2020)
Standard Specification for Urea-Formaldehyde Molding Compounds
NORMA vydaná dňa 1.12.2020
Informácie o norme:
Označenie normy: ASTM D705-99(2020)
Dátum vydania normy: 1.12.2020
Kód tovaru: NS-1013582
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D705-99(2020) :
This specification covers the testing and requirements for two types of compression-molding, thermosetting urea-formaldehyde molding compounds. Type 1 are general purpose molding compounds with alpha-cellulose fillers, while, Type 2 are general purpose molding compounds with cellulose fillers other than alpha-cellulose. The molding compounds shall be of uniform composition, and the apparent density, bulk factor, plasticity, particle size, and color shall be compounded as to conform to the requirements prescribed herein. Also, sampled test specimens shall be examined and conform correspondingly to the following physical requirements: specific gravity; flexural strength; impact resistance; water absorption; dielectric strength; and arc resistance.
Keywords:
formaldehyde, molding compounds (thermosetting), urea-formaldehyde,, ICS Number Code 83.140.99 (Other rubber and plastic products)
Doplňujúce informácie
| 1. Scope | ||||||||||||||||||||
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1.1?This specification covers compression molding thermosetting, urea-formaldehyde molding compounds as further defined in 3.1. 1.2?The values stated in SI units are to be regarded as the standard. Note 1:?The properties included in this specification are
those required to identify the types of molding compounds covered.
There may be other requirements necessary to identify particular
characteristics. Transfer or injection molding will usually result
in different physical and electrical characteristics than
compression molding.
1.3?The following safety hazards caveat pertains only to the test method portion, Section 7, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Note 2:?ISO 2112-1977(E) is similar but not equivalent to this
specification. Product classification and characterization are not
the same.
1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||||||||||||||||||||
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