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Super absorbent resin and preparation method and application thereof

A technology of superabsorbent resin and tapioca starch, which is applied in the direction of instruments, optics, optical components, etc., can solve the problems of poor compression resistance, water loss, and low salinity resistance, and achieve enhanced shear resistance and longitudinal stretching Ability, the effect of excellent mechanical properties

Inactive Publication Date: 2017-09-15
NANJING WASIN FUJIKURA OPTICAL COMM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Through the principle of fast water absorption and high expansion of SAP, a water-blocking layer is formed at the seepage port to prevent water from entering; ordinary SAP materials have poor compressive resistance and low salinity resistance, and will fail in high-pressure and high-salinity environments. The phenomenon of water; after absorbing water and swelling, it will be squeezed with the cable wall to lose water; the traditional SAP is mainly based on acrylic, and the water absorption of ionomers will drop sharply under high salinity
[0005] On the other hand, the environment in which optical cables are used is relatively complex, and the mechanical properties of water-blocking materials are also crucial. At present, the mechanical properties of SAP used in optical cables often cannot meet the requirements of optical cables in various environments.
At the same time, the traditional acrylic acid and acrylamide-based SAP also have the disadvantages of high toxicity of polymerization by-products and not being environmentally friendly.

Method used

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  • Super absorbent resin and preparation method and application thereof
  • Super absorbent resin and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049]1) Pre-stage starch gelatinization treatment: Take 225 grams of cassava starch, 10 kg of distilled water, add 40 grams of 40% by mass sodium hydroxide to fully dissolve it at 35-40 ° C and mechanically stir at a speed of 55-65 rpm to gelatinize the starch The solution is transparent, and 125 grams of 20% by mass maleic acid solution is added to adjust the neutralization degree to 80%. (Nitrogen protection throughout the process)

[0050] 2) Take 100 grams of polyvinyl alcohol, heat 1-2 kilograms of distilled water in a water bath to 90-95° C., and mechanically stir at a speed of 30-50 rpm for 1-2 hours. (Nitrogen protection throughout the process)

[0051] 3) Add 80 g of hydroxypropyl methylcellulose to the tapioca starch solution after gelatinization and heat to 55-65° C. Mechanically stir at a speed of 45-55 rpm for 1-2 hours and then heat up to 65° C. (Nitrogen protection throughout the process)

[0052] 4) Add 3 grams of potassium persulfate and 8 grams of N,N-met...

Embodiment 2

[0061] 1) Pre-stage starch gelatinization treatment: take 250 grams of cassava starch, 10 kg of distilled water, add 40 grams of 40% by mass sodium hydroxide to fully dissolve at 35-40 ° C and mechanically stir at a speed of 55-65 rpm to gelatinize the starch The solution is transparent, and 139 grams of 20% by mass maleic acid solution is added to adjust the neutralization degree to 80%. (Nitrogen protection throughout the process)

[0062] 2) Take 90 grams of polyvinyl alcohol, heat 1-2 kilograms of distilled water in a water bath to 90-95° C., and mechanically stir at a speed of 30-50 rpm for 1-2 hours. (Nitrogen protection throughout the process)

[0063] 3) Add 100 g of hydroxypropyl methylcellulose to the tapioca starch solution after gelatinization and heat to 55-65° C. Mechanically stir at a speed of 45-55 rpm for 1-2 hours, then heat up to 65° C. (Nitrogen protection throughout the process)

[0064] 4) Add 3 grams of potassium persulfate and 8 grams of N,N-methylen...

Embodiment 3

[0073] 1) Pre-stage starch gelatinization treatment: Take 220 grams of cassava starch, 10 kg of distilled water, add 40 grams of 40% by mass sodium hydroxide to fully dissolve them at 35-40°C and mechanically stir at a speed of 55-65rpm to gelatinize the starch The solution is transparent, and 122 grams of 20% by mass maleic acid solution is added to adjust the neutralization degree to 80%. (Nitrogen protection throughout the process)

[0074] 2) Take 60 grams of polyvinyl alcohol, heat it in a water bath with 1-2 kilograms of distilled water to 90-95° C., and mechanically stir at a speed of 30-50 rpm for 1-2 hours. (Nitrogen protection throughout the process)

[0075] 3) Add 85 g of hydroxypropyl methylcellulose to the tapioca starch solution after gelatinization and heat to 55-65° C. Mechanically stir at a speed of 45-55 rpm for 1-2 hours and then heat up to 65° C. (Nitrogen protection throughout the process)

[0076] 4) Add 3 grams of potassium persulfate and 8 grams of ...

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Abstract

The invention belongs to the field of a functional polymer material, and especially relates to super absorbent resin and a preparation method and an application thereof. The non-ionic polymer-polyvinyl alcohol is taken as a water-absorption main body, physical water retention of cassava starch and chemisorption capability of polyvinyl alcohol form complementation, at the same time, lignosulfonic acid is introduced for enhancing the anti-shearing capability, hydroxypropyl methyl cellulose enhances vertical stretching capability, the super absorbent resin is prepared by multiple steps, has high water absorption under high pressure and high salinity, and can fully absorb the liquid to reach water blocking effect. The raw materials have the advantages of nontoxicity and innocuousness, wide acquisition approach, environmental protection, and low preparation energy consumption, and are suitable for industrial production. The super absorbent resin has excellent mechanical property, high pressure resistance, and salt resistance, is suitable for various complex environment, and can be used as an optical cable water-blocking material.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to a superabsorbent resin and its preparation method and application. Background technique [0002] With the rapid development of global informatization and the continuous advancement of communication technology, single-mode optical fiber cables with good signal transmission performance have been widely used; as the area where optical cables are laid is becoming wider and wider, the environment for optical cable construction is becoming more and more complex. The higher; in order to maintain the fidelity of communication data and the long service life of the line, it is particularly important to maintain the humidity balance inside the optical cable. [0003] The traditional water-blocking material is fiber paste and cable paste, which is a non-polar ointment with polyolefin as the base oil; due to the high requirement of filling degree and the phenomenon of w...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L1/28C08L29/04C08L97/00C08K5/20C08K5/053C08K5/07G02B6/44
CPCC08L3/02C08L2205/035C08L2205/04G02B6/44384C08L1/284C08L29/04C08L97/00C08K5/20C08K5/053C08K5/07
Inventor 昂亚峰
Owner NANJING WASIN FUJIKURA OPTICAL COMM LTD
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