Tiêu chuẩn quốc tế
Số hiệu
Standard Number
BS EN ISO 1183-2-TC:2020
Năm ban hành 2020
Publication date
Tình trạng
A - Còn hiệu lực
Status |
Tên tiếng Anh
Title in English Tracked Changes (Redline) - Plastics – Methods for determining the density of non-cellular plastics Part 2: Density gradient column method
|
Chỉ số phân loại Quốc tế (ICS)
By field
83.080.01 - Chất dẻo nói chung
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Số trang
Page 38
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard This document specifies a gradient column method for the determination of the density of non-cellular moulded or extruded plastics or pellets in void-free form. Density gradient columns are columns containing a mixture of two liquids, the density in the column increasing uniformly from top to bottom. NOTE Density is frequently used to follow variations in physical structure or composition of plastic materials. Density can also be useful in assessing the uniformity of samples or specimens. The density of plastic materials can depend upon the choice of specimen preparation method. When this is the case, precise details of the specimen preparation method are intended to be included in the appropriate material specification. |