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GB/T 41709-2022: Carbon-fibre-reinforced plastics - Determination of the size and aspect ratio of crushed objects
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 41709-2022 | English | 194 |
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Carbon-fibre-reinforced plastics - Determination of the size and aspect ratio of crushed objects
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GB/T 41709-2022
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PDF similar to GB/T 41709-2022
Basic data | Standard ID | GB/T 41709-2022 (GB/T41709-2022) | | Description (Translated English) | Carbon-fibre-reinforced plastics - Determination of the size and aspect ratio of crushed objects | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Q53 | | Word Count Estimation | 10,144 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 41709-2022: Carbon-fibre-reinforced plastics - Determination of the size and aspect ratio of crushed objects
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Carbon-fibre-reinforced plastics - Determination of the size and aspect ratio of crushed objects
ICS 59.100.20
CCSQ53
National Standards of People's Republic of China
CFRP crushed material size and
Determination of aspect ratio
(ISO 30012.2016, IDT)
Published on 2022-10-12
2022-10-12 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents"
drafted.
This document is equivalent to ISO 30012.2016 "Determination of Size and Aspect Ratio of Carbon Fiber Reinforced Plastic Crushed Materials".
The following minimal editorial changes have been made to this document.
--- Incorporated the amendments to ISO 30012.2016/Amd.1.2018, and the outer margins of the clauses involved use vertical
Double lines (‖) are marked.
Please note that some content of this document may involve patents, and the issuing organization of this document does not undertake the responsibility for identifying patents.
This document is proposed and managed by the National Carbon Fiber Standardization Technical Committee (SAC/TC572).
This document is drafted by. Nanjing Fiberglass Research and Design Institute Co., Ltd., Anhui Guanting Technology Co., Ltd., Anhui Jinxilong New Construction Co., Ltd.
Materials Co., Ltd., Sinopec Shanghai Petrochemical Co., Ltd., and Changzhou Dams Testing Technology Co., Ltd.
The main drafters of this document. Xu Qi, Qu Huili, Wang Yumei, Kang Yiyu, Cheng Chuanchang, Bi Cuicui, Ma Dan, Lu Yao, Tan Yuan, Shi Huixian, Cui Jun.
CFRP crushed material size and
Determination of aspect ratio
1 Scope
This document specifies the method for the determination of the size and aspect ratio of carbon fiber reinforced plastic (CFRP) pulverized materials, mainly applicable to recycling
CFRP used. This document treats the shape of CFRP pulverized material fragments as rectangles, and specifies the measurement methods for length and width. Book
Files are suitable for fragments of the following average sizes.
---Length. 5mm~50mm;
---Width. 1mm~10mm.
This document provides 3 measurement methods, two are manual testing methods using a microscope and a scale bar, and the third is using a measuring instrument
automatic test method.
This document applies to CFRP pulverized materials made of thermosetting resins or thermoplastic resins.
Note. If the CFRP pulverized material contains a large amount of small fragments and fine particles, it is recommended to sieve it out with a 1mm sieve before measurement.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations
documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to
this document.
ISO 472 Plastics-Vocabulary
Note. GB/T 2035-2008 Plastic terms and their definitions (ISO 472.1999, IDT)
3 Terms and Definitions
Terms and definitions defined in ISO 472 apply to this document.
4 symbols
The following symbols apply to this document.
W. The width of the CFRP fragment, represented by the short side of the rectangle.
L. The length of the CFRP fragment, represented by the long side of the rectangle.
W. Average width of CFRP fragments.
L. Average length of CFRP fragments.
The aspect ratio of RA.CFRP fragments, calculated from the ratio of length to width of CFRP fragments.
σ(L). Standard deviation of CFRP fragment lengths.
σ(W). Standard deviation of CFRP fragment width.
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