High-salt-tolerance super absorbent resin and preparation process thereof

A super absorbent resin and a technology for its preparation process, applied in the field of resins, can solve the problems of high synthetic industrial cost, non-natural degradation, poor salt resistance and the like

Active Publication Date: 2020-10-20
乐清市川嘉电气科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, superabsorbent resins generally have the problems of high synthetic industrial cost and poor s...

Method used

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  • High-salt-tolerance super absorbent resin and preparation process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A highly salt-tolerant superabsorbent resin, comprising the following raw materials: 5 parts of sodium alginate, 80 parts of acrylic acid, 50 parts of acrylamide, 20 parts of chitosan, 10 parts of diatomaceous earth, and 10 parts of humic acid , 0.05 parts of an initiator, 0.3 parts of a crosslinking agent, and 0.05 parts of an antioxidant.

[0033] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0034] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0035] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0036] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0037] Step 1, dissolving ch...

Embodiment 2

[0042] A high salt-tolerant superabsorbent resin, comprising the following raw materials: 10 parts of sodium alginate, 100 parts of acrylic acid, 60 parts of acrylamide, 30 parts of chitosan, 20 parts of diatomaceous earth, and 15 parts of humic acid , 2.5 parts of initiator, 5 parts of crosslinking agent, 3 parts of antioxidant.

[0043] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0044] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0045] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0046] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0047] Step 1, dissolving chitosan directly in...

Embodiment 3

[0055] A high salt-tolerant superabsorbent resin, comprising the following raw materials: 8 parts of sodium alginate, 90 parts of acrylic acid, 55 parts of acrylamide, 25 parts of chitosan, 15 parts of diatomaceous earth, and 20 parts of humic acid , 0.1 part of initiator, 0.6 part of crosslinking agent, 0.5 part of antioxidant.

[0056] The crosslinking agent is one or more of N, N-methylenebisacrylamide, polyethylene glycol diacrylate, glycerol, pentaerythritol, trimethylolmethane triacrylate, sodium citrate complex.

[0057] The initiator is benzoyl peroxide or azobisisobutyronitrile or dilauroyl peroxide or di-tert-butyl peroxide.

[0058] The antioxidant is any one of 2,6-di-tert-butyl-4-methylphenol, 4-hydroxydodecanoic acid anilide, antioxidant 1076, and antioxidant 264.

[0059] The above-mentioned high salt-tolerant superabsorbent resin is prepared by the following preparation process, including the following steps:

[0060] Step 1, dissolving chitosan directly in ...

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Abstract

The invention belongs to the technical field of resins, and particularly relates to a high-salt-resistance super absorbent resin and a preparation process thereof. The high-salt-tolerance super absorbent resin is prepared from the following raw materials in parts by mass: 5 to 10 parts of sodium alginate, 80 to 100 parts of acrylic acid, 50 to 60 parts of acrylamide, 20 to 30 parts of chitosan, 10to 20 parts of diatomite, 10 to 20 parts of humic acid, 0.05 to 2.5 parts of an initiator, 0.3 to 5 parts of a cross-linking agent and 0.05 to 3 parts of an antioxidant. According to the preparationprocess disclosed by the invention, chitosan is directly dissolved in an acrylic acid solution for reaction to provide a neutralization effect on acrylic acid, so that the acrylic acid does not need to be neutralized before reaction, the process steps are reduced, and the production cost is reduced; sodium alginate is utilized to enhance the degradability of the resin so as to achieve an environment protection effect; and the porous structure of diatomite plays a role in bearing other raw materials and improving the water absorption of the resin, and the flocculation performance of the diatomite is improved through the reaction of the diatomite and the sodium alginate.

Description

technical field [0001] The invention belongs to the technical field of resins, and in particular relates to a highly salt-resistant superabsorbent resin and a preparation process thereof. Background technique [0002] Superabsorbent resin is a cross-linked network polymer containing a large number of strong polar groups. It was first prepared by Fanta et al. by grafting polyacrylonitrile with starch and then saponifying it. Since the 1960s, superabsorbent resins have been widely developed around the world. They can be divided into two categories according to raw materials. The first category is natural polymers, such as starch and cellulose; the second category is synthetic polymers, such as polymers. Acrylic acid, polyoxyethylene, polyvinyl alcohol, of which more than 80% of the current super absorbent resin is polymerized from acrylic acid monomers. [0003] As a new type of functional polymer material, superabsorbent resin has been widely used in medicine and health, agr...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F289/00C08F283/06C08F220/56C08F222/38C08K7/26C08K5/13C08K5/134
CPCC08F251/00C08F283/065C08F289/00C08K5/13C08K5/1345C08K7/26C08F220/06C08F220/56C08F222/385
Inventor 李方
Owner 乐清市川嘉电气科技有限公司
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