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A kind of water-based neoprene with no slag on roller coating and preparation method thereof

A neoprene and neoprene latex technology, applied in the direction of chloroprene adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problem of mechanical stability decline, demulsification and slagging, surface area increase, etc. problems, to achieve the effect of inhibiting slag from roller coating, improving blending stability and improving mechanical stability

Active Publication Date: 2021-10-12
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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  • A kind of water-based neoprene with no slag on roller coating and preparation method thereof
  • A kind of water-based neoprene with no slag on roller coating and preparation method thereof
  • A kind of water-based neoprene with no slag on roller coating and preparation method thereof

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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 neoprene rubber with no slag for rolling coating, which is made of the following components in mass fractions: neoprene latex 45-80, styrene-acrylic emulsion 15-40, viscosity-increasing emulsion 4-15, pH Regulator 0.2~2, slagging inhibitor 0.1~1, thickener 0.1~0.5. The invention also discloses a method for preparing the slag-free water-based neoprene by roller coating. The present invention has the following beneficial effects: 1) Adding a pH regulator can not only improve the blending stability of neoprene latex and styrene-acrylic emulsion, but also promote the crosslinking of hydroxyl groups in the latex to form a network structure, which is conducive to improving the initial tack of the adhesive and accelerate the drying speed, and also play an anti-seepage effect; 2) Add polyborate, a slag-inhibiting agent, to the formula, which can resist the collision of latex particles when subjected to mechanical action, improve the mechanical stability of water-based neoprene, and inhibit rolling Apply slag.

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 Patents(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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