GB/T 35463-2017 in English
VALIDTest method for bulk density of wood-plastic composites and products
- Issued on:2017-12-29
- Implemented on:2018-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 35463-2017木塑复合材料及制品体积密度的测定方法》由TC195（全国轻质与装饰装修建筑材料标准化技术委员会）归口，TC195SC2（全国轻质与装饰装修建筑材料标准化技术委员会木塑复合材料分会）执行，主管部门为中国建筑材料联合会。
Introduction
1. Background of Standard Formulation
GB/T 35463-2017 "Determination Method of Volume Density of Wood-Plastic Composite Materials and Products" is to standardize the volume density test of wood-plastic composite materials and their products and provide an accurate and repeatable measurement method. The standard was proposed by the China Building Materials Federation and is managed by the National Technical Committee for Standardization of Lightweight and Decorative Building Materials.
2. Comparison of standard frameworks
| Standard dimensions | GB/T 35463—2017 | Corresponding part of international standard ISO |
|---|---|---|
| Scope of application | Foamed and unfoamed wood-plastic composite materials and their products | Determination method of density of general plastic products |
| Definition of terms | Clear the concepts of density and volume density | No detailed distinction |
| Test principle | Drainage method to measure the mass difference of the sample in air and water | Application of Archimedes principle |
3. Instruments and technical requirements
Analytical balance: Accurate to $1~\mathrm{mg}$, used to accurately measure the mass of the sample.
Immersion container: A large-diameter beaker or other wide-mouthed container to ensure that the sample is completely immersed in water.
Immersion cage and weight: The metal wire (thin nylon wire) and the weight should be corrosion-resistant, with a smooth surface and regular shape, and the mass is sufficient to suspend the sample below the liquid surface.
4. Implementation suggestions
Actual application case:
A wood-plastic composite manufacturer adopted this standard for internal quality control, which significantly improved product consistency. Suggestions:
- Regularly calibrate the analytical balance and thermometer.
- Ensure the purity of the immersion liquid (distilled water, deionized water or softened water).
- Strictly control the test environment temperature. It is recommended to use a constant temperature water bath.
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