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Neoprene modified acrylic emulsion with quick-bonding property and preparation method thereof

An acrylic emulsion and modification technology, used in chloroprene adhesives, adhesives, adhesive types, etc., can solve the adaptability limitations of pre-baking solutions, accelerate the market application of emulsion-type water-based adhesives, and reduce production efficiency. It is easy to realize industrial production, improve the efficiency of sizing work, and achieve the effect of high polymerization reaction efficiency.

Active Publication Date: 2014-04-16
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned technical cases, the mechanical properties of the emulsion adhesive have been improved to a certain extent through the blending and modification measures, but it cannot meet the demand for the improvement of the bonding efficiency of the emulsion adhesive, and its application range is limited. limitation
[0007] For practical applications, emulsion-type adhesives that use water as a solvent generally have problems such as slow water volatilization and low production efficiency.
Most of the current solutions are to increase the pre-drying process in the sizing process to increase the surface drying speed of the emulsion, but the adaptability of the pre-drying scheme has its limitations, which increases the production process and increases the production cost.
[0008] In view of the above problems, it is urgent to develop a method that can quickly produce a strong enough initial bonding force in a relatively short period of time, so as to better overcome the problems of slow sticking and low bonding efficiency of the existing emulsion adhesives. The market application of emulsion water-based adhesives is of great significance

Method used

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  • Neoprene modified acrylic emulsion with quick-bonding property and preparation method thereof
  • Neoprene modified acrylic emulsion with quick-bonding property and preparation method thereof
  • Neoprene modified acrylic emulsion with quick-bonding property and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of chloroprene modified acrylic emulsion with fast viscosity, concrete steps and process conditions thereof are as follows:

[0046] Step 1: Raw material preparation

[0047] Component B: Weigh 240Kg water, 250Kg isooctyl acrylate, 30Kg styrene, 30Kg acrylonitrile, 20Kg methyl methacrylate, 2Kg methacrylic acid, 1kg hydroxyethyl methacrylate, 1kg alkylphenol ether OP9 And 8Kg sodium lauryl sulfate, after mixing and emulsifying by homogenizer for 10 minutes, obtain the homogeneous monomer emulsion component B that total mass is 582Kg;

[0048] Component C: Weigh 100Kg water and 5Kg potassium persulfate in turn, mix and dissolve to form component C with a total mass of 105Kg;

[0049] Step 2: Preparation of seed emulsion

[0050] In a normal-pressure reactor with a reflux device, under stirring, sequentially add 30% of the total mass fraction of the monomer emulsion component B obtained in step 1, totaling 174.6Kg; the total mass fraction of the solution componen...

Embodiment 2-6

[0058] Embodiment 2-6 is as shown in Table 3 in specific raw material proportioning and process condition thereof, and its concrete steps are identical with embodiment 1.

[0059]In order to facilitate the mutual comparison between the various examples, the specific raw materials (components A, B, C), proportioning and process parameters required by Examples 2-6 and Example 1 are listed in Table 3.

[0060] Table 3 Implementation Case 1-6 Material Proportion and Operating Conditions (Quality Unit: Kg)

[0061]

[0062]

[0063] Table 3 Note: 1. SDS is sodium dodecyl sulfate;

[0064] 2. Neoprene emulsion, which is a commercial neoprene emulsion with a solid content of 50% that can be easily purchased in the market;

[0065] 3. The above-mentioned acrylic monomers and other raw materials are reagents or industrial products normally available in the market;

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Abstract

The invention discloses neoprene modified acrylic emulsion with quick-bonding property and a preparation method of the neoprene modified acrylic emulsion. The method comprises the steps of preparation of seed emulsion: adding 25-30% of monomer emulsion component B based on the total weight and 25-30% of solution component C sequentially in a normal pressure reactor with a reflux in a stirring state, and adding a component A or not for reaction for at least 30min at constant temperature from 75 DEG C to 90 DEG C until blue light of the emulsion appears; emulsion polymerization: dropwise adding the remaining part of the monomer emulsion component B uniformly at constant temperature from 78 DEG C to 90 DEG C, and supplementing the remaining part of the solution component C; filtering and packaging to obtain the neoprene modified acrylic emulsion with quick-bonding property. The neoprene modified acrylic emulsion can quickly generate initial adhesive strength in a high moisture state through production and application tests, therefore, the bonding speed of the emulsion type adhesive is effectively improved, the working efficiency is improved, and the application requirement of the high-performance acrylic emulsion adhesive is met.

Description

technical field [0001] The invention relates to a fast-tack emulsion and a polymerization method thereof, belonging to the technical field of emulsion adhesives; specifically, it refers to a fast-tack chloroprene-modified acrylic emulsion and a preparation method thereof. Background technique [0002] Emulsion adhesive is a new generation of green and environmentally friendly water-based products, which have the advantages of non-toxic and harmless, various performances, economy, and convenience, and meet GB18583-2008, CSC / G2204-2006, HJ / T220-2005, EU REACH, ROHS And other access technical standards, well in line with the economic development goals of energy saving, high efficiency, resource conservation, green safety and environmental protection. [0003] Representative varieties of emulsion adhesives include acrylic emulsion, water-based polyurethane and other product types, which are widely used in transportation, packaging and printing, light industry manufacturing, buil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J111/02C08F220/18C08F220/14C08F212/08C08F220/44C08F220/06C08F220/28C08F2/26C08F2/30
Inventor 陈玉放梁利岩胡德焯练锦添吴昆
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI