The quality inspection system plays a vital role in the production and application of polyacrylamide, which is the key link to ensure stable and reliable product quality.

1. testing items

molecular weight determination

Molecular weight is a key performance indicator of polyacrylamide. Different application scenarios have different requirements for molecular weight. For example, in sewage treatment, suitable molecular weight can flocculate impurities more effectively. Commonly used detection methods are viscosity and gel permeation chromatography (GPC). The viscosity method measures the viscosity of the polyacrylamide solution, and then calculates the molecular weight according to the empirical formula. GPC is the use of polymer in the column separation principle, according to the outflow time to determine the molecular weight and its distribution.

Ionization test (for ionic polyacrylamide)

For anionic and cationic polyacrylamide, the ionicity directly affects its performance. The ionicity of anionic polyacrylamide is usually determined by titration. The sample is reacted with a specific reagent and the ionicity is calculated based on the amount of reagent consumed. The ionic degree of cationic polyacrylamide is often detected by colloidal titration, which uses the opposite charged colloid to react with the sample, and determines the ionic degree by observing the color change and other indicators.

determination of solid content

The solid content reflects the content of active ingredients in the polyacrylamide product. Oven drying method is generally used, a certain amount of sample is dried to constant weight at a specific temperature, and the solid content is determined by calculating the mass difference before and after drying. Accurate solid content control is very important for the use effect and cost accounting of the product.

Dissolution time and solubility test

Polyacrylamide needs to be quickly dissolved in water during application, so dissolution time and solubility are important test items. A certain amount of polyacrylamide is added to water at a certain temperature, and the time required for complete dissolution is recorded as the dissolution time. Solubility is determined by measuring the amount that can be dissolved under certain conditions. These two indicators have a direct impact on the convenience and effectiveness of operation in practical applications.

Residual monomer content detection

Acrylamide monomer has a certain toxicity, so the residual monomer content in polyacrylamide products must be strictly controlled. Common detection methods are gas chromatography and high performance liquid chromatography. These methods can accurately detect trace amounts of residual monomers to ensure product safety.

2. detection method

Laboratory testing

The professional quality testing laboratory is equipped with a variety of advanced testing equipment and instruments, such as precision analytical balance, constant temperature oven, chromatograph, etc. The testing personnel are professionally trained and tested in strict accordance with standard operating procedures. The laboratory will regularly calibrate and maintain the equipment to ensure the accuracy and reliability of the test results.

For each batch of polyacrylamide products, a representative sample will be taken for comprehensive testing. During the detection process, multiple repeated tests will be performed and the average value will be taken to reduce errors. At the same time, it will be compared with standard samples to ensure that the product performance meets the requirements.

online detection

In the production process, the use of online detection technology can monitor the quality parameters of the product in real time. For example, through the sensors installed on the production line, the flow, temperature, pressure and other parameters of the product can be monitored in real time, and the abnormal situation in the production process can be found in time. In addition, equipment such as online spectrometers can be used to monitor the key performance indicators of the product in real time to achieve rapid feedback and adjustment.

Third-party detection

In order to ensure the fairness and authority of the test results, manufacturers will regularly send products to third-party testing agencies for testing. Third-party testing institutions have testing qualifications and professional technical capabilities, and can conduct testing in accordance with international standards and industry norms. Their test reports have high credibility and can provide customers with strong quality assurance.

3. measures to ensure high quality standards

Strict raw material control

From the beginning of the procurement of raw materials, suppliers are strictly screened to ensure that the quality of raw materials meets the standards. Strict testing of each batch of raw materials, only qualified raw materials can enter the production process. At the same time, establish a quality traceability system for raw materials so that problems can be traced back to the source in time.

optimization of production process

Continuously improve and optimize the production process to improve the stability and controllability of the production process. Through precise control of process parameters, such as reaction temperature, reaction time, stirring speed, etc., to ensure product quality consistency. At the same time, strengthen the detection and monitoring of intermediate products in the production process, and find and solve problems in time.

Quality management personnel training

Cultivate a professional team of quality management personnel, they have a wealth of quality management experience and professional knowledge. The quality management personnel are responsible for formulating and implementing the quality management system, supervising the implementation of the inspection process, handling and analyzing the causes of unqualified products, and proposing improvement measures. At the same time, regular training and assessment of quality management personnel, and constantly improve their business level.

Quality feedback and improvement mechanisms

Establish a sound quality feedback and improvement mechanism, collect customer feedback and problems in the use process in a timely manner. According to these feedback information, organize technical personnel to analyze and study, find out the root cause of the problem, and take corresponding improvement measures. At the same time, the improved product will be tested and verified again to ensure that the problem is completely solved.

In short, the quality testing system of polyacrylamide ensures that each batch of products can meet high quality standards through scientific testing items, advanced testing methods and strict quality control measures. This not only for manufacturers to win the market reputation, but also to provide customers with quality products and services.