A preparation method for detecting hydrogen sulfide functional composite fabric

Abstract

The invention relates to a preparation method of a composite fabric with a hydrogen sulfide detection function. The preparation method comprises the steps that a silver nitrate solution is dropwise added into a dispersion solution of sulfonic acid silica gel at the temperature of 50 DEG C-60 DEG C under the stirring condition, stirring continues to be conducted for 30-60 min, the temperature is lowered to 30 DEG C-40 DEG C, stirring continues to be conducted for 30-60 min by keeping the temperature, and silver ion-modified sulfonic acid silica gel Ag-SSA is formed; a fabric is soaked into a NaOH solution with the concentration of 10-20 g / L, heating is conducted for 30-60 min at the temperature of 70 DEG C-90 DEG C, the fabric is washed, placed into an aqueous solution of the Ag-SSA, subjected to ultrasonic oscillation, taken out and air-dried, and the composite fabric with the hydrogen sulfide detection function is obtained. The preparation method is simple, easy to operate, safe, environmentally friendly and low in requirement on equipment performances; a chemical bonding agent is not adopted, and the fabric is soft and air-permeable and can be applied to a portable hydrogen sulfide detection garment.

Description

technical field [0001] The invention belongs to the field of preparation of composite fabrics, in particular to a method for preparing a composite fabric with the function of detecting hydrogen sulfide. Background technique [0002] Zhiyang Zhang et al. ("On-site visual detection of hydrogen sulfide in airbased on enhancing the stability of gold nanoparticles." ACS applied materials & interfaces 6.9 (2014): 6300-6307.) stated that hydrogen sulfide is a highly toxic gas with rotten egg smell , exists in crude oil, natural gas and hot springs. Hydrogen sulfide is also produced from human activities such as oil / natural gas extraction and refining, wastewater treatment, etc. Long-term exposure to high concentrations (greater than 250ppm) may cause blood poisoning and even death. Therefore, the real-time detection of hydrogen sulfide must be paid attention to in the manual production process. However, the existing hydrogen sulfide detection technology is not very widely used, su...

AI Technical Summary

Problems solved by technology

However, the existing hydrogen sulfide detection technology is not very widely used, such as Sui Xiuxiang et al. At present, there are two types of sensors used in well sites to detect hydrogen sulfide: fixed and portable. These two types of sensors can only detect the content of hydrogen sulfide in the atmosphere, and the detection parameters are quite different, and the delay time is long. In order to solve these problems The problem is that the Key Laboratory of Petroleum Engineering Ministry of Education, China University of Petroleum has developed a well site hydrogen sulfide detection system, which can not only detect sulfur ions in the air, but also detect sulfur ions in the mortar, but the system is still complicated, the equipment is heavy, and the cost is high. The problem

In order to solve the problem of heavy hydrogen sulfide detection equipment and complicated equipment, many scholars have recently turned their attention to portable hydrogen sulfide detection equipment.

[0003] Zhang Weiyun et al. (Common diagnostic methods for halitosis and their comparison [J]. Dental Materials and Instruments, 2011, 20(4): 202-204.) comprehensively elaborated that the current instruments for detecting sulfide include gas chromatograph and portable gas chromatograph: Gas Chromatograph (Gas Chromatography, GC) is a large-scale precision instrument that can perform qualitative and quantitative detection of mixed gases, but before using the gas chromatograph, it is necessary to draw a standard curve, the instrument is expensive, the flexibility is poor, and the detection cost is high; portable equipment There is a portable sulfide detector (Halimeter) produced in the United States. TM ) and a portable gas chromatograph produced in Japan (referred to as GC-SCS, trade name OralChroma TM ) is easier to operate than traditional gas chromatographs, but these two portable instruments are suitable for large-scale testing institutions and hospital outpatient clinics, and the application range is still relatively limited

Therefore, the current portable hydrogen sulfide detection device still has the problems of high cost and inconvenient use.

Images