Roll-coating non-slagging water-based chloroprene rubber adhesive and preparation method thereof

A technology of neoprene and neoprene latex, which is applied in the field of adhesives, can solve the problems of decreased mechanical stability, increased surface area, demulsification and slag, etc., and achieves the suppression of roller coating slag, improvement of mechanical stability, and improvement of The effect of blend stability

Active Publication Date: 2020-12-15
HUANGGANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the intolerance of the formula system or some substances, in actual application, slag is encountered in the rubber-like roller coating. What's worse is that there is no problem with the current formulation. After a month or two or three months, it seems that there is no problem on the surface. Roller rubber machine or high-speed stirring will cause serious demulsification (slagging and peeling), which will cause great trouble and risk to users
[0003] Water-based neoprene is prone to demulsification and slag during the rolling coating process. The main reason for this phenomenon is that the latex particles become larger during storage, the surface area increases, and the emulsifier covering the particles is significantly reduced and mechanically stable. On the other hand, the chlorine ions in the water-based neoprene are released into the emulsion during storage, resulting in a change in the pH value of the system; when subjected to mechanical action, the collision of latex particles occurs, and coarse particles are formed to aggregate and slag

Method used

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  • Roll-coating non-slagging water-based chloroprene rubber adhesive and preparation method thereof
  • Roll-coating non-slagging water-based chloroprene rubber adhesive and preparation method thereof
  • Roll-coating non-slagging water-based chloroprene rubber adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 6

[0027] A kind of preparation method of the water-based neoprene that does not slag by roll coating, its component and the steps that comprise are as follows: Weigh 140g of neoprene latex C84, slowly add 0.6g mass concentration wherein to be 5% pH adjuster HBO 3 Aqueous solution and 0.3g mass concentration of 10% anti-slagging agent potassium pentaborate aqueous solution, after stirring fully, add 48g of styrene-acrylic emulsion under shear at 600rpm, disperse for 20 minutes, and finally add 10.89g of terpene phenol resin under stirring at 400rpm Aqueous dispersion and 0.21g hydroxymethyl cellulose, stir evenly to obtain slag-free water-based neoprene by roll coating.

Embodiment 7

[0029] A kind of preparation method of the water-based neoprene that does not slag by roll coating, its component and the steps that comprise are as follows: Weigh 140g of neoprene latex C84, slowly add 0.6g mass concentration wherein to be 5% pH adjuster HBO 3 Aqueous solution and 0.3g mass concentration of 10% anti-slagging agent lithium borate aqueous solution, after stirring fully, add styrene-acrylic emulsion 48g under shear at 900rpm, disperse for 25 minutes, finally add 10.89g terpene phenol resin water dispersion under stirring at 500rpm Body and 0.21g hydroxymethyl cellulose, stir evenly to obtain water-based neoprene without slag by rolling.

Embodiment 8

[0031] A method for preparing water-based neoprene by roller coating without slag, its components and steps are as follows: Weigh 140 g of domestic neoprene latex SNL-6042, and slowly add 0.6 g of a pH regulator with a mass concentration of 5% HBO 3 Aqueous solution and 0.3g mass concentration of 10% anti-slagging agent potassium pentaborate aqueous solution, after stirring fully, add 48g of styrene-acrylic emulsion under shearing at 800rpm, disperse for 25 minutes, finally add 10.89g of terpene phenol resin water under stirring at 450rpm Dispersion and 0.21g hydroxymethyl cellulose, stir evenly to obtain slag-free water-based neoprene by roller coating.

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Abstract

The invention discloses a water-based chloroprene rubber adhesive, which is prepared from the following components by mass: 45-80 parts of neoprene latex, 15-40 parts of a styrene-acrylic emulsion, 4-15 parts of a tackifying emulsion, 0.2-2 parts of a pH regulator, 0.1-1 part of a slagging inhibitor and 0.1-0.5 part of a thickening agent. The invention further discloses a preparation method of theroll-coating non-slagging water-based chloroprene rubber adhesive. Compared with the prior art, the invention has the following beneficial effects that: (1) the pH regulator is added, so that the blending stability of the neoprene latex and the styrene-acrylic emulsion can be improved, hydroxyl in the latex can be promoted to crosslink to form a reticular structure, the initial adhesion of the adhesive can be improved, the drying speed can be increased, and an anti-seepage effect can be achieved; and 2) the slagging inhibitor polyborate is added into the formula, so that the mechanical stability of the water-based chloroprene rubber adhesive can be improved by resisting the collision of emulsion particles under a mechanical action, and roll-coating slagging is inhibited.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a water-based neoprene that is roll-coated without slag and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental regulations and people's increasing awareness of environmental protection, water-based neoprene is widely used in flexible packaging industries such as mattresses, seating (sleeping) chairs, and sofas. At present, spraying is mostly used for construction, but the atomization is serious during spraying. Therefore, it is more convenient to use roller coating when a large amount of adhesive foaming materials and boards are glued on a large area. Due to the intolerance of the formula system or some substances, in actual application, slag is encountered in the rubber-like roller coating. What's worse is that there is no problem with the current formulation. After a month or two or three months, it seems that there is no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J111/02C09J125/14C09J11/04C09J11/08
CPCC08K2003/387C08L2205/035C09J11/04C09J11/08C09J111/02C08L25/14C08L45/00C08L1/284C08K3/38C08L93/04
Inventor 张凯
Owner HUANGGANG NORMAL UNIV
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