Method for preparing cinepazid polymer emulsion adhesive without peculiar smell

A styrene-acrylic polymer, odorless technology, applied in the direction of hydrocarbon copolymer adhesives, adhesive types, etc., can solve the problems of affecting the bonding effect of adhesives to textile materials, the easy aggregation of activated carbon materials, and complex process conditions, etc. , to achieve excellent mechanical properties and water resistance, increase the storage period, and reduce the content of free monomers

Inactive Publication Date: 2010-12-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still problems in the method of modifying the adhesive with such materials: the production cost is high, the process conditions are complicated, and the activated carbon material is easy to agglomerate in the process of adding the styrene-acrylic emulsion, which affects the bonding effect of the adhesive to the textile material. Simultaneous modification The dispersibility and stability of the material in the emulsion need to be further improved

Method used

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  • Method for preparing cinepazid polymer emulsion adhesive without peculiar smell

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 0.04g of anionic emulsifier K 12 , 0.4g of non-ionic emulsifier Span and 845g of deionized water were emulsified for 10min, and under strong stirring, 0.4g of styrene and 0.04g of acrylic acid were added as seed monomers and 0.0022g of white carbon black to form a transparent seed microemulsion. Slowly raise the temperature to 40°C, add 0.04g of ammonium persulfate to initiate microemulsion polymerization, and slowly add the remaining 39.6g of styrene and 3.96g of acrylic acid dropwise after the emulsion turns blue, and finish the dripping within 4 hours, keep warm at 60°C for 6 hours, and then use 0.00055 g sodium hydroxide to adjust the pH value of the system to 6.5, continue stirring for 15 minutes, stop heating, cool and discharge, and obtain a translucent deodorant-modified styrene-acrylic polymer emulsion QBT-1 with a solid content of 5%.

Embodiment 2

[0019] Add 5.68g of anionic emulsifier POS, 1.14g of nonionic emulsifier Tween, and 33.8g of deionized water into a 250mL four-neck flask equipped with a stirrer, reflux condenser, thermometer, and feeding device for emulsification for 3 hours, and add 2g of benzene under vigorous stirring. Ethylene and 20g of methyl acrylate are used as seed monomers and 0.035g of white carbon black to form a transparent seed microemulsion. Slowly raise the temperature to 100°C, add 4.4g of azobisisobutyronitrile to initiate microemulsion polymerization, and slowly add the remaining 2g of styrene and 20g of methyl acrylate dropwise after the emulsion turns blue, and finish the dripping within 40 minutes, then keep the temperature at 110°C for 30 minutes, Then use 0.08g sodium bicarbonate to adjust the pH value of the system to 10.5, continue stirring for 15min, stop heating, cool and discharge, and obtain a translucent deodorant-modified styrene-acrylic polymer emulsion QBT-2 with a solid cont...

Embodiment 3

[0021] Add 6g of anionic emulsifier SDS, 2g of nonionic emulsifier Tween, and 179g of deionized water into a 500mL four-necked bottle equipped with a stirrer, reflux condenser, thermometer, and feeding device for emulsification for 1 hour, and add 9g of styrene and 6g of Methyl methacrylate was used as a seed monomer and 0.1 g of white activated carbon to prepare a transparent seed microemulsion. Slowly raise the temperature to 82°C, add 1.8g of potassium persulfate to initiate microemulsion polymerization, and slowly add the remaining 51g of styrene and 34g of methyl methacrylate dropwise after the emulsion turns blue, and finish the dripping within 2 hours, then keep the temperature at 92°C for 1.5h, Then use 3g of ammonium bicarbonate to adjust the pH value of the system to 8.9, continue stirring for 15min, stop heating, cool and discharge, and obtain a translucent deodorant-modified styrene-acrylic polymer emulsion QBT-3 with a solid content of 38%.

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Abstract

The invention relates to a method for modifying styrene-acrylic acid emulsion adhesive without peculiar smell, specifically comprising the following steps: adding composite emulsifier with 1.0% to 15.5% of total monomer mass and ionized water into four-opening flask equipped with agitator, reflex condenser tube, thermometer and feeding device for emulsification 10min to 3h, adding seed monomer and flavor remover with 0.005% to 1.0% of total monomer content under intense agitation to prepare transparent seed micro-emulsion, heating the micro-emulsion gradually to 40 deg C. to 100 deg C., adding initiator to initialize micro-emulsion polymerization, dropping residual monomer gradually after the emulsion shows blue light; finishing dropping in 40min to 4h, maintaining temperature at 60 deg C. to 110 deg C. for 30min to 6h, regulating system pH value by alkaline matter between 6.5 to 10.5, continuing agitation for 15min, then stopping heating, cooling the emulsion for discharging, obtaining styrene-acrylic acid emulsion modified by transparent oxidized starch with 5% to 65% of total solid content. The invention adopts flavor remover to modify styrene-acrylic acid emulsion, which reduces content of free monomer in the emulsion, prolongs storage period and reduces environment pollution.

Description

technical field [0001] The invention relates to a method for modifying and preparing an odor-free styrene (ethylene) acrylic (acrylic acid) emulsion adhesive, in particular to a process method for modifying a styrene-acrylic resin emulsion with a deodorant. The modified styrene-acrylic emulsion has the characteristics of stable storage, excellent bonding performance and no odor. Background technique [0002] In recent years, styrene-acrylic resin adhesives have achieved rapid development at home and abroad. Styrene-acrylic resin emulsion adhesives are favored by the market because of their wide source of raw materials, excellent product performance and stable quality. Styrene-acrylic emulsion adhesives are widely used in many fields such as bamboo and wood processing, paper and fiber fabric bonding. At present, domestic styrene-acrylic emulsion adhesives are widely used in flocking adhesives in the textile industry, but due to the limitation of production technology and pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J125/14
Inventor 邱凤仙杨冬亚孙丽丽
Owner JIANGSU UNIV
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