Is adding it to concrete really useful? Before purchasing Polyacrylonitrile fibers, consider these points first. 

Polyacrylonitrile fibers (also known as acrylic fibers) are widely used in outdoor rope nets, safety nets, concrete reinforcement, geotextiles, etc. due to their resistance to sunlight, weathering, acid and alkali, and good loftiness. As a purchaser, what you care about is not only the basic strength of the fibers, but also their durability and batch stability in specific environments. Below, from the production perspective, we will introduce how we control these two aspects. 

1. Targeted adjustments to raw materials and processes 

The performance of Polyacrylonitrile fibers primarily depends on the selection of raw materials and the coordination of the production process. 

Raw material selection: We select polyacrylonitrile raw materials suitable for engineering or textile applications. Depending on different application scenarios (such as weather-resistant rope nets, concrete crack prevention), we focus on different aspects such as fiber strength, elongation rate, and light resistance, and match the corresponding raw material grades. We do not randomly change the raw material suppliers to maintain consistency between product batches. 

Process parameter matching: We do not adopt a "one-size-fits-all" approach for the process. For the polyacrylonitrile fibers used for concrete crack resistance, the fineness and surface condition of the fibers need to be controlled to ensure their dispersibility in the mortar; for the fibers used in outdoor rope nets, the focus should be on UV resistance and aging resistance, and the process will be adjusted accordingly. We will match the requirements at the spinning stage through process adjustments based on your final application. 

Functional processing: For special functions requested by customers (such as anti-aging, flame retardancy, etc.), corresponding additives can be added during the spinning stage instead of relying solely on post-processing. The supplier can provide suggestions based on your specific usage environment. 

It should be noted that compared to polypropylene fibers and polyester fibers, Polyacrylonitrile fibers have better alkali resistance and are suitable for reinforcing cement-based materials. However, their wear resistance is relatively weak, and this aspect should be taken into consideration when used in dynamic friction scenarios. 

II. Batch Consistency and Product Traceability 

When conducting batch purchases, the most worrying issue is the significant differences in color, thickness, and dispersion effect between consecutive batches. To ensure the stability of the products, we adopt the following measures: 

Sample retention comparison: Samples are retained for each batch of products and the production date is marked. During the production of the next batch, an appearance, feel, and basic physical property comparison will be conducted with the samples from the previous batch to ensure no significant changes. This is a direct method to control color differences and performance fluctuations between batches. 

Process inspection: During the production process, samples are taken at regular intervals and tested under standard conditions for indicators such as breaking strength and elongation rate. Any fluctuations are promptly adjusted to the process parameters. Before each batch of products is shipped, a proportionate sample will be taken for final testing. 

Dispersion test: For the polyacrylonitrile fibers in concrete, we will conduct small sample mixing tests according to the mortar ratio provided by the customer to observe whether the fibers are evenly dispersed and whether there is any clumping phenomenon, ensuring their performance in actual use. 

Summary and Selection Suggestions 

When purchasing polyacrylonitrile fibers, it is recommended to follow the steps below for confirmation: 

Clarify the application scenarios: Is it for crack resistance of cement mortar/concrete, or for outdoor rope nets or safety nets? Different scenarios place different emphases on strength, light resistance, and dispersibility. 

Assess durability requirements: For products that will be used outdoors for a long time, please confirm whether the fibers have undergone UV resistance or aging resistance treatment, and request relevant comparison test data or explanations. 

Conduct on-machine or material input verification: Perform small-scale trials on your mixing equipment or weaving equipment to observe the uniformity of fiber dispersion, the smoothness of weaving, and the improvement effect on the final product performance. 

Shandong Huimin Taili Chemical Fiber Products Co., Ltd.: http://www.sdzwhq.cn/, mainly deals in polypropylene high-strength yarn, polypropylene colored yarn, polyester fiber, safety ropes, safety nets, etc. Welcome to call for consultation and request samples for actual measurement. 

Contact Information:

Contact person: Wang Yuanwen 

Mobile phone: 1369543938 

Telephone: 0543-5690985 

Fax: 0543-5690985 

Address: Rimonnet Industrial Park, Qinghe Town, Binzhou City, Shandong Province