Polyacrylic ester thickener and preparation method thereof

A polyacrylate and thickener technology, applied in textiles, papermaking, fiber processing, etc., can solve problems such as affecting the appearance, affecting the audio resonance frequency of the speaker, and unable to obtain higher sound quality output, and improving the appearance and movement space. The effect of increased resistance, good viscosity binding ability

Inactive Publication Date: 2010-02-17
JIANGXI SCI & TECH NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using conventional acrylate thickeners, after the coating is dried or dried, the coated latex will penetrate to the back of the coating and form mottled glue stains. On the one hand, it affects the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) The weight ratio of raw material components is: %

[0029] Sodium lauryl sulfate 0.3

[0030] Alkylphenol polyoxyethylene ether 0.5

[0031] Methacrylic acid 12

[0032] Ethyl acrylate 18

[0033] N-methacrylamide 0.5

[0034] Synergist 0.5

[0035] Ammonium persulfate 0.6

[0036] Deionized water 67.6

[0037] One of the synergists is sodium vinyl sulfonate.

[0038] (2) The preparation method is:

[0039] (1) Add the aqueous solution of compound emulsifier in the reactor according to the weight formula: sodium lauryl sulfate 0.3, alkylphenol polyoxyethylene ether 0.6, deionized water 30, stir evenly;

[0040] (2) Add 1 / 5 of the monomer mixture: methacrylic acid 12, ethyl acrylate 18, 1 / 5 (initiator + synergist + N-methacrylamide) mixed aqueous solution: ammonium persulfate 0.6, synergistic Agent 0.5, N-methacrylamide 0.5, the balance of deionized water, heat up to 65 ℃, keep warm for 20min;

[0041] (3) Raise the temperature to 85°C, add the remaining in...

Embodiment 2

[0043] (1) The weight ratio of raw material components is: %

[0044] Sodium lauryl sulfate 0.3

[0045] Alkylphenol polyoxyethylene ether 0.5

[0046] Methacrylic acid 8

[0047] Ethyl acrylate 22

[0048] N-methacrylamide 0.8

[0049]Synergist 2.5

[0050] Ammonium persulfate 0.5

[0051] Deionized water 65.4

[0052] One of the synergists is sodium propenyl sulfonate.

[0053] (2) The preparation method is:

[0054] (1) Add the aqueous solution of compound emulsifier in the reactor by weight formula: sodium lauryl sulfate 0.3, alkylphenol polyoxyethylene ether 0.5, deionized water 30, stir evenly;

[0055] (2) Add 1 / 5 of the monomer mixture: methacrylic acid 8, ethyl acrylate 22, 1 / 5 (initiator + synergist + N-methacrylamide) mixed aqueous solution: ammonium persulfate 0.5, synergistic Agent 2.5, N-methacrylamide 0.8, the balance of deionized water, heat up to 75°C, keep warm for 40min;

[0056] (3) Raise the temperature to 80°C, drop the remaining aqueous initiat...

Embodiment 3

[0058] (1) The weight ratio of raw material components is: %

[0059] Sodium lauryl sulfate 0.3

[0060] Alkylphenol polyoxyethylene ether 0.5

[0061] Methacrylic acid 10

[0062] Ethyl acrylate 20

[0063] N-methacrylamide 2.8

[0064] Synergist 4.5

[0065] Ammonium persulfate 0.5

[0066] Deionized water 61.4

[0067] The synergist among them is 2-acrylamide-2-methylpropanesulfonic acid.

[0068] (2) The preparation method is:

[0069] (1) Add the aqueous solution of compound emulsifier in the reactor by weight formula: sodium lauryl sulfate 0.3, alkylphenol polyoxyethylene ether 0.5, deionized water 30, stir evenly;

[0070] (2) Add 1 / 5 of the monomer mixture: methacrylic acid 10, ethyl acrylate 20, 1 / 5 (initiator + synergist + N-methacrylamide) mixed aqueous solution: ammonium persulfate 0.5, synergistic Agent 4.5, N-methacrylamide 2.8, the balance of deionized water, heat up to 80°C, keep warm for 30min;

[0071] (3) Raise the temperature to 85°C, add the rema...

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PUM

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Abstract

The invention relates to a polyacrylic ester thickener and a preparation method thereof, in particular to a thickener used for the cloth edge coating adhesive of a loudspeaker chassis and a preparation method thereof. The polyacrylic ester thickener is prepared from the following raw materials in the proportion by weight through emulsion polymerization: 0.3-3.0 sodium dodecyl sulfate, 0.3-6.0 alkylphenol polyoxyethylene, 5.0-30.0 methacrylic acid, 5.0-30.0 ethyl acrylate, 0.5-5.0 N-methacrylamide, 0.5-5.0 synergistic agent, 0.1-5.0 ammonium persulfate and the balance of deionized water. The invention has the advantages that the thickener and the water-based polyacrylic ester fabric coating adhesive are matched in use for preparing the cloth edge of the loudspeaker chassis, thereby avoidingthe phenomenon of glue penetration of the cloth, beatifying the appearance of the product and improving the quality of the product.

Description

technical field [0001] The invention relates to a polyacrylate thickener and a preparation method thereof. Background technique [0002] At present, the application of acrylate thickeners is relatively wide. Due to its various structures and rich varieties, which can meet the requirements of various rheological properties, the development is extremely rapid. [0003] Commonly used monomers for the synthesis of acrylate thickeners are: acrylic acid, methacrylic acid, ethyl acrylate, butyl acrylate, long-chain acrylate, acrylamide, maleic acid, maleic anhydride, etc. The acidic monomer can increase the viscosity of the system after being neutralized with alkali, and the ester monomer can endow the copolymer with flexibility. Long-chain esters such as lauryl and stearyl acrylate aggregate due to the action of hydrophobic groups, causing intermolecular associations between macromolecular chains, increasing the hydrodynamic volume, and thus increasing the viscosity of the system...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F220/18C08F228/02C08F220/54C08F2/26C08F2/30D06M15/263D06M15/356
Inventor 刘够生
Owner JIANGXI SCI & TECH NORMAL UNIV
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