Unlock instant, AI-driven research and patent intelligence for your innovation.

Rapid quantitative analysis method for resorcinol in rubber adhesive R80

A technique for resorcinol and quantitative analysis, which is applied in the directions of analyzing materials, measuring devices, and material separation, can solve the problems of shortening the test time, cumbersome and time-consuming, and achieves the effect of saving extraction time, high accuracy and small error.

Active Publication Date: 2016-04-06
BEIJING RED AVENUE INNOVA
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is cumbersome and time-consuming. How to quickly and accurately quantify R80 resorcinol is a matter of great concern in the industry. The present invention aims to disclose a method for quantifying R80 resorcinol using ultrasonic extraction and gas chromatography. The method avoids the errors caused by tedious solution preparation and step-by-step reaction, greatly shortens the test time, and the quantitative analysis is fast and accurate, which is better than the currently used redox titration method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rapid quantitative analysis method for resorcinol in rubber adhesive R80
  • Rapid quantitative analysis method for resorcinol in rubber adhesive R80
  • Rapid quantitative analysis method for resorcinol in rubber adhesive R80

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: Quantitative analysis of rubber adhesive SL-R80J0112R2 resorcinol (from Huaqi (China) Chemical Co., Ltd.)

[0024] 1.1 Preparation of internal standard stock solution: Weigh 4025.32mg m-cresol into a 50mL volumetric flask, dissolve in acetone to volume.

[0025] 1.2 Preparation of standard sample stock solution: Weigh 4506.25mg of resorcinol into a 50mL volumetric flask, dissolve in acetone to volume.

[0026] 1.3 Preparation of standard series solutions: Accurately pipette 1.0mL of internal standard stock solution into five 10mL volumetric flasks, and then pipette 0.5mL, 1.0mL, 1.5mL, 2.0mL, 2.5mL of standard sample stock solution into the above five In a 10mL volumetric flask, dilute to volume with acetone.

[0027] 1.4 Preparation of rubber adhesive SL-R80J0112R2 extract:

[0028] Cut SL-R80J0112R2 to less than 1mm with scissors 3 Weigh 205.65mg, 201.98mg, 195.67mg, and 198.12mg of particle samples, respectively, and place them in four 50mL test tubes w...

Embodiment 2

[0051] Example 2: Quantitative analysis of rubber adhesive R-80 resorcinol (from Shandong Yanggu Huatai Chemical Co., Ltd.)

[0052] 2.1 The preparation of the internal standard stock solution and the standard series solution is the same as in Example 1.

[0053]2.2 Preparation of rubber binder R-80 extract:

[0054] Use scissors to prepare the rubber adhesive R-80 to be less than 3mm 3 Weigh 197.61mg, 204.45mg, 203.19mg, and 192.64mg of rubber granule samples, respectively, and place them in four 50mL test tubes with stoppers, as parallel samples. Use a pipette to pipette 1.0mL of internal standard stock solution and 15mL of acetone, and continuously sonicate for 40min at an ultrasonic frequency of 40KHz and a temperature of 50°C to obtain the extraction solution.

[0055] Put the standard series and the extract into the GC system for analysis.

[0056] The chromatographic conditions are set as: column HP-5MS30m length*0.25mm inner diameter*0.25μm film thickness; the contr...

Embodiment 3

[0062] Example 3: Quantitative analysis of resorcinol in rubber adhesive R80 from an unknown manufacturer (from Zhongce Rubber Group Co., Ltd.)

[0063] 3.1 The preparation of internal standard stock solution and standard series solution is the same as in Example 1.

[0064] 3.2 Preparation of rubber binder R80 extract:

[0065] Use the MM400 mixed freeze grinder (produced by Retsch, Germany) to prepare the R80 to be less than 0.01mm 3 Weigh 200.97mg, 195.07mg, 199.49mg, and 202.56mg of rubber particle samples, respectively, and place them in four 50mL test tubes with stoppers, as parallel samples. Use a pipette to pipette 1.0 mL of internal standard stock solution and 15 mL of acetone, and continuously sonicate for 20 min at an ultrasonic frequency of 40 KHz and a temperature of 50 ° C to obtain the extract.

[0066] Put the standard series and the extract into the GC system for analysis.

[0067] The chromatographic conditions are set as: column HP-5MS30m length*0.25mm in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the field of component analysis of rubber chemicals and aims to provide a rapid quantitative analysis method for the content of resorcinol in a rubber adhesive R80. The method is implemented through the technical scheme as follows: particles with the size smaller than 4 mm<3> are prepared from the rubber adhesive R80, an internal standard substance and a solvent are added accurately, ultrasonic extraction is performed under certain conditions, an extracted liquid is subjected to separation test through capillary column gas chromatography, and the content of resorcinol in the rubber adhesive R80 is measured quantitatively through comparison with a resorcinol standard solution. The method adopts simple processing steps, has high analysis speed and small errors, and an analysis result is high in accuracy.

Description

technical field [0001] The invention belongs to the field of component analysis of rubber additives, and in particular relates to a rapid quantitative analysis method for the content of resorcinol in rubber adhesive R80. Background technique [0002] The rubber adhesive R80 is produced by mixing and granulating dispersant, polymer and 80% resorcinol under heating conditions. Since resorcinol has been pre-dispersed into the polymer carrier containing dispersant, it not only improves the The dispersibility of quinone in the rubber compound weakens the irritating resorcinol fume in the mixing operation, so R80 is widely used in the bonding of rubber and fiber fabrics or brass-plated and galvanized steel wires, tires, Processing and manufacturing of conveyor belts, V-belts, and fire hoses. How to quickly and accurately quantify the content of R80 resorcinol is of great significance to both manufacturers and users. [0003] At present, the test method of rubber adhesive R80 res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
CPCG01N30/02G01N2030/025
Inventor 王璨高剑琴胡小娜李秋荣房彩琴董栋
Owner BEIJING RED AVENUE INNOVA