Sodium acrylate water-absorbing swelling resin solution, PET fiber water-absorbing swelling water-blocking tape and preparation method thereof

Abstract

A sodium acrylate water-absorbing resin solution, its composition (by weight) is: 20-100 parts of deionized water, 5-60 parts of sodium hydroxide, 4-40 parts of acrylic acid, 2-20 parts of acrylamide, 1-20 parts of potassium persulfate 7 parts, 0.5-10 parts of ammonium persulfate, 0.1-6 parts of N-(hydroxymethyl)acrylamide. The sodium acrylate water-absorbing resin solution provided by the present invention contains two initiators, ammonium persulfate and potassium persulfate, which can slow down the crosslinking speed during the copolymerization and crosslinking reaction, and weaken the influence of the high temperature generated by the exothermic reaction on the copolymerization rate. Reduce heat release. The preparation method is as follows: neutralize the sodium hydroxide aqueous solution and acrylic acid, then add the acrylamide aqueous solution, ammonium persulfate, potassium persulfate and N-(hydroxymethyl)acrylamide in sequence, and slow release after stirring. The present invention also includes a PET fiber water-absorbing swelling water-blocking tape prepared by using the sodium acrylate water-absorbing resin solution. The PET fiber water-absorbing swelling water-blocking tape prepared by the method is light in weight per square meter, soft in texture, high in swelling thickness and It expands quickly and blocks water in the optical cable, and has good water blocking effect.

Description

Technical field [0001] The invention relates to the field of water-blocking material manufacturing, in particular to a sodium acrylate water-absorbing resin solution, a water-absorbing swelling water-blocking tape and a preparation method thereof. Background technique [0002] The structure of the communication optical cable directly affects the user experience, and the selection of the water blocking material of the optical cable has an impact on the quality of its structure. Currently, most of the materials used in the water-blocking process in the optical cable structure are: 1. Grease-type water-blocking fiber paste and cable paste; 2. Non-woven fabric adhesive sodium acrylate water-absorbing resin composite water-blocking tape. [0003] The oil-type water-blocking paste is added to the optical cable, which is used in large quantities in production, and the production of oil pollutes the environment and consumes a lot of petroleum resources. In addition, the optical cable proc...

AI Technical Summary

Problems solved by technology

However, its swelling and water absorption thickness (5min) is less than 10mm, and the expansion and water absorption performance is lower than the industry standard.