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GB/T 32675-2016: Plastics -- Phenolic resins -- Determination of the pseudo-adiabatic temperature rise of liquid resols when cured under acid conditions
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32675-2016 | English | 119 |
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Plastics -- Phenolic resins -- Determination of the pseudo-adiabatic temperature rise of liquid resols when cured under acid conditions
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GB/T 32675-2016
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PDF similar to GB/T 32675-2016
Basic data | Standard ID | GB/T 32675-2016 (GB/T32675-2016) | | Description (Translated English) | Plastics -- Phenolic resins -- Determination of the pseudo-adiabatic temperature rise of liquid resols when cured under acid conditions | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.10 | | Word Count Estimation | 6,645 | | Date of Issue | 2016-06-14 | | Date of Implementation | 2017-01-01 | | Adopted Standard | ISO 9771-1995, MOD | | Regulation (derived from) | National Standard Announcement No. 8 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies a method for the determination of the exothermic reactivity of liquid thermosetting phenolic resins after mixing with acidic curing agents under specified conditions. The results are used to evaluate the processability of phenolic resins. | GB/T 32675-2016: Plastics -- Phenolic resins -- Determination of the pseudo-adiabatic temperature rise of liquid resols when cured under acid conditions
---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.
Plastics - Phenolic resins - Determination of the pseudo-adiabatic temperature rise of liquid resols when cured under acid conditions
ICS 83.080.10
G31
National Standards of People's Republic of China
Plastic phenolic resin liquid resole phenolic resin
Determination of adiabatic temperature rise during curing under acidic conditions
(ISO 9771..1995, MOD)
2016-06-14 release
2017-01-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard uses the re-drafting method to modify the use of ISO 9771..1995 "plastic phenolic resin liquid resole phenolic resin in acid
Determination of the adiabatic temperature rise during curing. "(English version).
There are technical differences between this standard and ISO 9771..1995, and the terms involved in these differences have passed through the margin
The vertical single line (︱) of the position is marked.
The technical differences between this and ISO 9771..1995 and the reasons are as follows.
--- Reaction container (4.1) The size of the paper cup is changed from "bottom diameter. about 60mm, cup diameter. about 70mm, height. about 60mm" to
"Bottom diameter. about 50 mm, cup diameter. about 70 mm, height. about 80 mm". The reason for the modification is given in ISO 9771..1995
Out of the paper cup specifications in China is not common;
- Reproduced the schematic of the instrument in accordance with national standards (Figure 1). Because this standard has modified the scale of the paper cup as a reaction vessel
Inch, so the figure in the foam block height from 120mm to 140mm; in order to be consistent with the description in 4.2, the figure reaction
The mixture on the surface with the foam on the block from 20mm to 30mm;
--- Change the results of the parallel test results to the maximum temperature and the time required to reach the maximum temperature in the results representation (Chapter 6)
Not more than 3% and 5%. Refer to the repeatability given in the precision, ISO 9771..1995 in the general provisions of the parallel test results
Not more than 5% unreasonable.
For ease of application, this standard has also been modified as follows.
--- Deleted the preface of ISO 9771..1995;
- an introduction to the national standard;
--- Change the precision of ISO 9771..1995 (Chapter 7) to Note.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard by the National Plastics Standardization Technical Committee Thermosetting Plastics Subcommittee (SAC/TC15/SC11) centralized.
This standard is responsible for drafting units. Changshu Southeast Plastic Co., Ltd.
This standard participates in the drafting unit. Zhongguang dawn Chemical Research and Design Institute Co., Ltd., Shaxian Hongsheng Plastic Co., Ltd., Shanghai Eurasia
Materials Co., Ltd., Shandong Shengquan Chemical Co., Ltd., National Synthetic Resin Quality Supervision and Inspection Center.
The main drafters of this standard. Wei Wei, Wang Weijiang, Zhao Ping, Luo Jianfeng, Zhu Yongmao, Wei Ying, Liu Lirong.
Plastic phenolic resin liquid resole phenolic resin
Determination of adiabatic temperature rise during curing under acidic conditions
1 Scope
This standard specifies the liquid thermosetting phenolic resin and acid curing agent mixed under the conditions of the exothermic reaction activity of the determination method.
The results were used to evaluate the processing properties of phenolic resins.
2 principle
The phenolic resin is mixed with an acid curing agent to cure, to determine the maximum temperature reached and the time required to reach the highest temperature.
3 reagent
3.1 Suitable acid curing agent
And the composition of the resin, such as. p-phenolsulfonic acid, industrial grade, 65% ± 1% (mass fraction) aqueous solution.
4 instrument (see Figure 1)
The unit is in millimeters
Description.
A --- thermocouple connected to the temperature recorder; D --- test tube; G --- ethylene glycol or other suitable liquid.
B --- cover; E --- reaction mixture (resin);
C --- reaction container; F --- foam block;
Figure 1 Schematic diagram of the instrument
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