CN104650285A - Preparation method of water-absorbent resin - Google Patents

Abstract

The invention relates to a preparation method of water-absorbent resin, which comprises the following steps: mixing the following components by mass fraction: 54% of silica, 18% of alumina, 8% of ferric oxide, 4% of magnesium oxide, 9% of calcium oxide, 1% of sodium oxide, 5% of potassium oxide and 1% of organic carbon; immersing 60-70g mixing components in 100g water to obtain a mixture; adding 16-18g acrylamide in the mixture, fully stirring for 15minutes, adding 15-16g acrylic acid and 20-22g sodium hydroxide, adding 4-6g initiator and 4-6g cross-linking agent, fully stirring for 15minutes, storing at 60 DEG C and polymerizing, then drying, and crushing for granulation to obtain the water-absorbent resin finished product. The method has simple and controllable process, and the obtained water-absorbent resin product has the advantages of good water-absorption and low aging rate.

Description

A kind of preparation method of water-absorbing resin

Technical field

The invention belongs to chemical technology field, particularly a kind of preparation method of water-absorbing resin.

Background technology

Water-absorbing resin is a kind of functional materials, there is hydrophilic radical, moisture can be absorbed in a large number and the swelling synthetic resins that can maintain moisture and not outflow, as starch grafted acrylate class, graft acrylamide, high substitution value cross-linked carboxymethyl cellulose, cross-linked carboxymethyl cellulose graft acrylamide, cross-linking type Natvosol graft acrylamide polymkeric substance.In current water-absorbing resin preparation, there is the problems such as water-absorbent is not high, complicated process of preparation in multiplex polynite, Bentonite/Starch etc.

Summary of the invention

In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of preparation method of water-absorbing resin, products obtained therefrom water absorbing properties is good, and preparation process is stablized controlled.

To achieve these goals, the technical solution used in the present invention is:

A preparation method for water-absorbing resin, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 60-70g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 16-18g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 15-16g vinylformic acid and 20-22g sodium hydroxide in the product of step 3, then adds 4-6g initiator and 4-6g linking agent, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

Described initiator is potassium sulfate and/or S-WAT.

Described linking agent is N, N '-methene bisacrylamide.

Compared with prior art, present invention process process is simply controlled, and products obtained therefrom good water absorption, aging rate is low.

Embodiment

Embodiments of the present invention are described in detail below in conjunction with embodiment.

Embodiment one

A preparation method for water-absorbing resin, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 60g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 16g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 15g vinylformic acid and 20g sodium hydroxide in the product of step 3, then adds 2g potassium sulfate and 2g S-WAT and 4gN, N '-methene bisacrylamide, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

Embodiment two

A preparation method for water-absorbing resin, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 70g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 18g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 16g vinylformic acid and 22g sodium hydroxide in the product of step 3, then adds 3g potassium sulfate and 3g S-WAT and 6gN, N '-methene bisacrylamide, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

Embodiment three

A preparation method for water-absorbing resin, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 65g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 17g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 15g vinylformic acid and 21g sodium hydroxide in the product of step 3, then adds 2g potassium sulfate and 2g S-WAT and 5gN, N '-methene bisacrylamide, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

Embodiment four

A preparation method for water-absorbing resin, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 65g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 18g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 16g vinylformic acid and 22g sodium hydroxide, then adds 6g potassium sulfate and 4gN, N in the product of step 3 '-methene bisacrylamide, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

Claims (3)

1. a preparation method for water-absorbing resin, is characterized in that, comprises the steps:

Step 1, according to following massfraction configuration mixed-matrix: silicon-dioxide 54%, aluminum oxide 18%, ferric oxide 8%, magnesium oxide 4%, calcium oxide 9%, sodium oxide 1%, potassium oxide 5%, organic carbon 1%;

Step 2, is immersed in 60-70g mixed-matrix in the water of 100g and obtains mixture;

Step 3, adds 16-18g acrylamide, fully stirs 15min in the mixture of step 2;

Step 4, adds 15-16g vinylformic acid and 20-22g sodium hydroxide in the product of step 3, then adds 4-6g initiator and 4-6g linking agent, fully stirs 15min;

Step 5, deposits polymerization by the product of step 4 at 60 DEG C, and then drying, pulverizing granulation obtain water-absorbing resin finished product.

2. the preparation method of water-absorbing resin according to claim 1, is characterized in that, described initiator is potassium sulfate and/or S-WAT.

3. the preparation method of water-absorbing resin according to claim 1, is characterized in that, described linking agent is N, N '-methene bisacrylamide.