阅读说明：本技术 一种复合型高吸水树脂 (Composite super absorbent resin ) 是由 *** 于 2019-10-10 设计创作，主要内容包括：一种复合型高吸水树脂,按重量份计算,具有如下组分：高吸水树脂85％-90％、甲壳素5％-8％、改性钛酸钾晶须5％-7％。制备方法为：(1)聚乙二醇、纤维素、水、偶氮二异丁腈按重量份5～8:50～60:30～44:1～2比例加入反应釜,在90℃进行接枝改性,得到聚乙二醇交联型高吸水树脂凝胶；(2)将甲壳素、改性钛酸钾晶须按配比加入高吸水树脂凝胶中,机械搅拌；干燥除水后粉碎得到复合型高吸水树脂。有益效果是解决目前高吸水树脂刺激皮肤、抗菌差、凝胶强度不好的问题。(The composite super absorbent resin comprises the following components in parts by weight: 85-90% of super absorbent resin, 5-8% of chitin and 5-7% of modified potassium titanate whisker. The preparation method comprises the following steps: (1) adding polyethylene glycol, cellulose, water and azodiisobutyronitrile into a reaction kettle according to the weight ratio of 5-8: 50-60: 30-44: 1-2, and carrying out graft modification at 90 ℃ to obtain polyethylene glycol cross-linked super absorbent resin gel; (2) adding chitin and modified potassium titanate whisker into the super absorbent resin gel according to the proportion, and mechanically stirring; drying, dewatering and crushing to obtain the composite super absorbent resin. The beneficial effect is that the problems of skin irritation, poor antibacterial property and poor gel strength of the existing super absorbent resin are solved.)

1. The composite super absorbent resin comprises the following components in parts by weight: 85-90% of super absorbent resin, 5-8% of chitin and 5-7% of modified potassium titanate whisker.

2. The composite super absorbent resin according to claim 1, wherein: the super absorbent resin is polyethylene glycol cross-linked cellulose-based resin.

3. The composite super absorbent resin according to claim 1, wherein: the diameter of chitin is 2-4 μm.

4. The composite super absorbent resin according to claim 1, wherein: the modified potassium titanate whisker is treated by adopting a silane coupling agent and is potassium hexatitanate whisker with the grain size of 3-5 microns.

5. The composite super absorbent resin according to claim 4, wherein: the silane coupling agent is one of KH550, KH560, KH570 and trifluoropropyltrimethoxysilane.

6. The composite super absorbent resin according to any one of claims 1 to 5, wherein: the preparation method comprises the following steps: (1) adding polyethylene glycol, cellulose, water and azodiisobutyronitrile into a reaction kettle according to the weight ratio of 5-8: 50-60: 30-44: 1-2, and carrying out graft modification at 90 ℃ to obtain polyethylene glycol cross-linked super absorbent resin gel; (2) adding chitin and modified potassium titanate whisker into the super absorbent resin gel according to the proportion, and mechanically stirring; drying, dewatering and crushing to obtain the composite super absorbent resin.

Technical Field

The invention belongs to the field of functional polymers, particularly relates to a water-absorbent resin, and more particularly relates to a preparation method of a composite super-absorbent resin.

Background

The super absorbent resin is a functional polymer material with special performance, and has the capability of absorbing hundreds of times or even thousands of times of water of the great self mass. The water-absorbent resin for human body hygiene mainly refers to water-absorbent resin for human body hygiene paper diapers, sanitary napkins and nursing pads, and is abbreviated as SAP. The paper diaper (cloth) is divided into two types of baby diapers and adult incontinence pants (cloth and pad) according to different user groups. When in use, the water-absorbent resin is compounded with the fluff paper fiber pulp in the core layers of the paper diaper, the sanitary towel and the nursing pad, substances such as urine, menstrual blood, excrement liquid and the like can be quickly captured and absorbed by the core layer added with the water-absorbent resin, the air permeability and the dryness of the contact surface of the water-absorbent resin and a human body can be kept, and the cost of the resin and a product is also required to meet the economic requirement of disposable articles. However, the existing super absorbent resin for human body hygiene is mainly acrylic acid type, and the residual monomer has certain irritation and poor antibacterial property. In addition, the strength of the prior super absorbent resin after imbibition is insufficient, which causes poor gel imbibition effect.

Disclosure of Invention

The invention mainly aims to provide a composite super absorbent resin, which solves the problems of skin irritation, poor antibacterial property and poor gel strength of the conventional super absorbent resin.

In order to achieve the technical effects, the invention adopts the following technical scheme: the composite super absorbent resin comprises the following components in parts by weight: 85-90% of super absorbent resin, 5-8% of chitin and 5-7% of modified potassium titanate whisker.

The super absorbent resin is polyethylene glycol cross-linked cellulose-based resin, does not irritate skin, has non-ionic hydrophilic groups, and has a better urine absorption effect.

The chitin has a diameter of 2-4 microns, has continuous antibacterial property, and is environment-friendly.

The modified potassium titanate whisker is treated by adopting a silane coupling agent, is potassium hexatitanate whisker with the particle size of 3-5 microns, and the silane coupling agent is one of KH550, KH560, KH570 and trifluoropropyl trimethoxy silane.

The composite super absorbent resin is prepared by the following method: (1) adding polyethylene glycol, cellulose, water and azodiisobutyronitrile into a reaction kettle according to the weight ratio of 5-8: 50-60: 30-44: 1-2, and carrying out graft modification at 90 ℃ to obtain polyethylene glycol cross-linked super absorbent resin gel; (2) adding chitin and modified potassium titanate whisker into the super absorbent resin gel according to the proportion, and mechanically stirring; drying, dewatering and crushing to obtain the composite super absorbent resin.

The invention has the beneficial effects that:

(1) the invention adopts polyethylene glycol cross-linked resin as the main component, does not irritate the skin and has good urine absorbability.

(2) The chitin has environment-friendly and antibacterial effects, and can inhibit bacteria increase in the use process of the super absorbent resin.

(3) The potassium titanate whisker is used as filling, the three-dimensional structure of the potassium titanate whisker is dispersed in resin, the potassium titanate whisker can play a supporting role, and the resin can still keep the gel strength after absorbing water.

Detailed Description

For further understanding of the present invention, the following embodiments are provided to illustrate the technical solutions of the present invention in detail, and the scope of the present invention is not limited by the following embodiments.