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Preparation method for rosinyl composite nano polymer micro-sphere

A nano-polymer and nano-microsphere technology, which is applied in the field of preparation of nano-scale rosin-based composite polymer microspheres, can solve the problems of compatibility and migration, performance defects of composite materials, etc., and achieves stability and uniform size. , the effect of good application prospects

Inactive Publication Date: 2014-04-30
中国林科院林产化工研究所南京科技开发有限公司
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Problems solved by technology

However, there are deficiencies in these two methods. After the emulsifier is used to disperse the rosin or its derivatives into particles, the rosin or its derivatives particles are used as small molecule additives when they are compounded with other polymer materials. Migration issues, in addition, due to the presence of additional emulsifiers, will cause some performance defects in composite materials

Method used

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Embodiment 1

[0030] A preparation method of novel rosin-based composite nanometer polymer microspheres, the preparation steps are:

[0031] In the first step, the polymerizable rosin-based monomer is dissolved in the vinyl monomer as a solvent to prepare a composite solution of the polymerizable rosin-based monomer. The ethylenic monomer used contains acrylate (such as methyl methacrylate, butyl acrylate, etc.), vinyl ester (such as vinyl acetate, etc.), styrene, etc. The mass ratio of polymerizable rosin-based monomers to vinyl monomers is: (1.5-0.01): 1; the synthesis method of free radical polymerizable rosin-based monomers refers to the following published patents (CN101215445, CN101492591, CN101265392, CN101066918, CN103232349A) The record in embodiment 1. The structural formula is as follows:

[0032]

[0033] In the second step, the polymerizable rosin-based monomer composite solution is added to an aqueous solution containing an emulsifier, stirred and dispersed to generate a ...

Embodiment 2

[0037] Synthetic steps:

[0038] In the first step, 13.3 g of polymerizable rosin-based monomer (DAE) was dissolved in 26.7 g of methyl methacrylate monomer to prepare a DAE-methyl methacrylate composite solution. The mass ratio of DAE to methyl methacrylate is: 0.5:1;

[0039] In the second step, a total of 40.0 g of the DAE-methyl methacrylate composite solution is added to the water (195 g) solution containing the emulsifier sodium dodecylbenzenesulfonate (0.4 g), stirred and dispersed to generate DAE-methacrylic acid Methyl ester monomer pre-emulsion, the amount of emulsifier used is 1% relative to the mass ratio of DAE-methyl methacrylate;

[0040] The third step is to prepare the DAE-methyl methacrylate monomer monomer nano-particles by homogeneously dispersing the polymerizable rosin-based monomer pre-emulsion. ball;

[0041] The fourth step is to add water-soluble hydrogen peroxide (1.5g)-ascorbic acid (0.4g) redox initiator, raise the temperature to 85°C, and carr...

Embodiment 3

[0043] Synthetic steps:

[0044]In the first step, 16.0 g of methyl methacrylate monomer was used as a solvent, and 24.0 g of polymerizable rosin-based monomer (DAE) was dissolved in it to prepare a DAE-methyl methacrylate composite solution. The mass ratio of DAE to methyl methacrylate is: 1.5:1;

[0045] In the second step, a total of 40.0 g of the DAE-methyl methacrylate composite solution is added to the water (195 g) solution containing the emulsifier sodium dodecylbenzenesulfonate (0.4 g), stirred and dispersed to generate DAE-methacrylic acid Methyl ester monomer pre-emulsion, the amount of emulsifier used is 1% relative to the mass ratio of DAE-methyl methacrylate;

[0046] The third step is to prepare DAE-methyl methacrylate monomer nano-microspheres by homogeneously dispersing the polymerizable rosin-based monomer pre-emulsion with a treatment time of 20 seconds, an interval of 30 seconds, and a total treatment time of 3 minutes;

[0047] The fourth step is to add...

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Abstract

The invention relates to a preparation method for a rosinyl composite nano polymer micro-sphere. The preparation method comprises the following steps: by taking a polymerizable rosinyl monomer as a stabilizing agent, carrying out an in-situ polymerization reaction with an allyl monomer under the common effect of an emulsifying agent to prepare the rosinyl composite nano polymer micro-sphere. The preparation method comprises the following steps: step 1, by taking the allyl monomer as a solvent, dissolving the polymerizable rosinyl monomer to prepare a polymerizable rosinyl monomer composite solution; step 2, adding the polymerizable rosinyl monomer composite solution into a water solution containing the stabilizing agent and agitating and dispersing; step 3, homogenizing and dispersing at a high speed to prepare a rosinyl composite monomer nano polymer micro-sphere; and step 4, adding an initiator and carrying out in-situ polymerization to prepare the novel rosinyl composite nano micro-sphere. The novel rosinyl composite nano micro-sphere is uniform in size; the grain diameter is about 50nm-200nm and the novel rosinyl composite nano micro-sphere has a very good application prospect in the aspects of adhesives, coatings and the like.

Description

technical field [0001] A method for preparing a novel rosin-based composite nanopolymer microsphere. In particular, it relates to a preparation method of nano-scale rosin-based composite polymer microspheres. Background technique [0002] Rosin is the most important product of my country's forestry chemical industry, and it is also a pillar industry of forestry. It is the only product among my country's forestry products that ranks first in the world in terms of output and export volume. The annual output is more than 600,000 to 800,000 tons, and the export is more than 250,000 to 300,000 tons, accounting for about 50% of the world trade volume. [0003] Rosin has many excellent properties, such as anti-corrosion, moisture-proof, insulation, adhesion, emulsification, softening and so on. For nearly a century, rosin and its deep-processed modified products have been widely used in many fields such as coatings, adhesives, inks, papermaking, rubber, food additives and biologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/30C08F220/16C08F2/26C08F2/30C08F218/12
Inventor 王基夫储富祥王春鹏刘玉鹏
Owner 中国林科院林产化工研究所南京科技开发有限公司
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