Organosilicon modified fluorine-containing polyacrylate waterproof oil resistant emulsion and preparation method thereof

A polyacrylate, waterproof and oil-proof technology, which is applied in the field of emulsion preparation, can solve problems such as difficulty in large-scale popularization and application, easy hydrolysis of ester bonds, and degradation of coating film performance, so as to facilitate large-scale industrial promotion and application, surface The effect of small tension and large molecular molar volume

Active Publication Date: 2014-07-09
SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Polyacrylate emulsions are widely used in the coatings industry because of their excellent film-forming properties, good gloss retention and excellent mechanical properties. However, polyacrylate molecules have a linear structure and lack crosslinking points. The polar group of water, the coating has a certain degree of water permeability, especially when it is exposed to sunlight, wind and rain, and acidic substances, the ester bond is prone to hydrolysis, which will reduce the performance of the coating film
A fluorine-containing polyacrylate / double-size nano-SiO is disclosed in the patent literature with the publication number CN102911308A 2 The preparation method of composite emulsion, this technology adopts the way of inorganic material silica and fluorine-containing polyacrylate to carry out composite reaction, although the above-mentioned shortcomings are overcome, but in the synthesis reaction, it is necessary to prepare nano-silica particles of two particle sizes, The process is more complicated, and it is difficult to realize large-scale popularization and application

Method used

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  • Organosilicon modified fluorine-containing polyacrylate waterproof oil resistant emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation steps:

[0036] (1) In a four-neck flask equipped with a stirrer, dropping funnel, thermometer and reflux condenser, add 6 g of organosilicon monomer octamethylcyclotetrasiloxane, emulsifier sodium lauryl sulfate and octane Add 0.6g of phenol polyoxyethylene ether, 65g of water and 0.2g of catalyst sodium persulfate at a ratio of 1:1.2, and stir at 205 r / min for 0.5h.

[0037] (2) After making it fully pre-emulsified, raise the temperature to 80°C, make the organosilicon monomer undergo ring-opening polymerization reaction, keep it for 2 hours, then cool down to 50°C, and use butyl acrylate and methyl methacrylate at a ratio of 1:1.2 Add 30g (monomer 1), dropwise add 3.9g of hexafluorobutyl methacrylate (monomer 2), and let the monomer 1 and monomer 2 swell the silicone seeds for a period of time.

[0038] (3) Then raise the temperature to 75°C, first add 0.5g of sodium thiosulfate, and then add 0.3g of initiator ammonium persulfate, the emulsion will insta...

Embodiment 2

[0040] Preparation steps:

[0041] (1) Add 6.9 g of organosilicon monomer octamethylcyclotetrasiloxane, 0.6 g of emulsifier sodium lauryl sulfate, 65g of water and 0.2g of catalyst potassium persulfate were stirred at 250r / min for 1h.

[0042] (2) After making it fully pre-emulsified, raise the temperature to 85°C, make the organosilicon monomer undergo ring-opening polymerization reaction, keep it for 3 hours, then cool down to 50°C, and use butyl acrylate and methyl methacrylate at a ratio of 1:1 Add 30g, (monomer 1) and dropwise add 3.9g of hexafluorobutyl methacrylate (monomer 2), and let the monomer 1 and monomer 2 swell the silicone seeds for a period of time.

[0043] (3) Then raise the temperature to 75°C, first add 0.5g of sodium thiosulfate, and then add 0.3g of initiator ammonium persulfate, the emulsion will instantly change from milky white to translucent light blue, after adding the initiator, react for 2 hours , so that the monomer 1, the monomer 2 and the org...

Embodiment 3

[0045] Preparation steps:

[0046] (1) Add 3.8 g of organosilicon monomer octamethylcyclotetrasiloxane, 4 g of vinyl triethoxysiloxane, 0.6g of emulsifier octylphenol polyoxyethylene ether-10, 65g of water and 0.2g of catalyst sodium persulfate, stirred at 280r / min for 1h.

[0047](2) After making it fully pre-emulsified, raise the temperature to 83°C, make the organosilicon monomer undergo ring-opening polymerization reaction, keep it for 2.5h, then cool down to 50°C, butyl acrylate and methyl methacrylate at a ratio of 1:1.5 Proportionally add 30g (monomer 1), dropwise add 3.9g of hexafluorobutyl methacrylate (monomer 2), and leave for a period of time to make monomer 1 and monomer 2 swell the silicone seeds.

[0048] (3) Then raise the temperature to 75°C, first add 0.5g of sodium thiosulfate, and then add 0.3g of initiator ammonium persulfate, the emulsion will instantly change from milky white to translucent light blue, after adding the initiator, react for 2 hours , so...

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Abstract

The invention discloses an organosilicon modified fluorine-containing polyacrylate waterproof oil resistant emulsion and a preparation method thereof, which belongs to the emulsion production field. The emulsion is prepared by an organosilicon monomer, an emulsifier, a catalyst, a monomer A, a monomer B, sodium hyposulfite, an initiator and water with specific ratio. Compared with prior art, the organosilicon modified fluorine-containing polyacrylate waterproof oil resistant emulsion has better waterproof oil resistant performance, has simple production technology, and has good popularization and application value.

Description

technical field [0001] The invention relates to the field of emulsion preparation, in particular to an organosilicon-modified fluorine-containing polyacrylate water- and oil-repellent emulsion and a preparation method thereof. Background technique [0002] my country's paper industry has continued to develop at a high speed since 1990, and now it has become the world's second largest paper industry country, and its production equipment is also among the best in the world. With the progress of the times and the strengthening of people's awareness of environmental protection, paper products have gradually replaced many refractory plastic products, and have been widely used in catering, food, candy, etc. and daily life in terms of packaging. Paper products used in packaging must have certain waterproof and oil-proof functions, and a layer of continuous and dense organic polymers including polyacrylate, polyethylene, polyvinyl alcohol, and carboxymethyl cellulose can be coated o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/14C08F220/18C08F220/22C08G77/06
Inventor 王伟陈永梅张丰庆王士平袁胜袁俊洲李因波仲亚伟袁来全禚磊
Owner SHANDONG YUANGEN CHEM TECH RES & DEV CO LTD
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