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Water-based plastic absorbing adhesive and preparation method thereof

A plastic and water-based technology, applied in the field of water-based absorbent plastic and its preparation, can solve the problem that the water-based absorbent plastic cannot meet the needs of use, and achieve the effects of good anti-adhesion resistance, good mechanical strength, and improved compatibility.

Active Publication Date: 2021-08-06
东莞市冠力胶业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, water-based plastics are mainly polyurethane glue or vinyl acetate copolymer glue or the blended latex of the two, but the above-mentioned water-based plastics cannot meet the needs of use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method for water-based plastic absorbing plastic, comprising the steps of:

[0027] (1) Synthesis of hydroxyethyl acrylate-vinyl acetate copolymer: Weigh vinyl acetate, hydroxyethyl acrylate and initiator for mixing, heat up to 75°C, and react for 1.5h to obtain hydroxyethyl acrylate-vinyl acetate Ester copolymer, the mass ratio of described vinyl acetate and hydroxyethyl acrylate is 75:25, and the quality of initiator is 0.3% of the mass sum of vinyl acetate and hydroxyethyl acrylate;

[0028] (2) Synthesis of polyurethane acrylate: take by weight 16.5% of diisocyanate, 9% of polyester polyol, 11.5% of hydroxyethyl acrylate-vinyl acetate copolymer of step (1), 2% of chain extender, Catalyst 0.05%, neutralizer 1.5%, defoamer 0.2% and water balance, add diisocyanate, polyester polyol and catalyst in the reaction kettle, raise the temperature to 85°C and react for 2.5h, then add hydroxyethyl acrylate- Vinyl acetate copolymer, continue to keep warm for 2.5 h...

Embodiment 2

[0039] A preparation method for water-based plastic absorbing plastic, comprising the steps of:

[0040] (1) Synthesis of hydroxyethyl acrylate-vinyl acetate copolymer: weigh vinyl acetate, hydroxyethyl acrylate and initiator for mixing, heat up to 70°C, and react for 1 hour to obtain hydroxyethyl acrylate-vinyl acetate Copolymer, the mass ratio of described vinyl acetate and hydroxyethyl acrylate is 70:30, and the quality of initiator is 0.1% of the mass sum of vinyl acetate and hydroxyethyl acrylate;

[0041](2) Synthesis of polyurethane acrylate: take by weight 15% of diisocyanate, 8% of polyester polyol, 10% of hydroxyethyl acrylate-vinyl acetate copolymer of step (1), 1% of chain extender, Catalyst 0.01%, neutralizer 1%, defoamer 0.1% and water balance, add diisocyanate, polyester polyol and catalyst in the reaction kettle, heat up to 80°C and react for 2h, then add hydroxyethyl acrylate-acetic acid Vinyl ester copolymer, continue to keep warm for 2h, cool down to 60°C a...

Embodiment 3

[0052] A preparation method for water-based plastic absorbing plastic, comprising the steps of:

[0053] (1) Synthesis of hydroxyethyl acrylate-vinyl acetate copolymer: weigh vinyl acetate, hydroxyethyl acrylate and initiator for mixing, heat up to 80°C, and react for 2 hours to obtain hydroxyethyl acrylate-vinyl acetate Copolymer, the mass ratio of described vinyl acetate and hydroxyethyl acrylate is 80:20, and the quality of initiator is 0.5% of the mass sum of vinyl acetate and hydroxyethyl acrylate;

[0054] (2) Synthesis of polyurethane acrylate: take by mass percentage 18% of diisocyanate, polyester polyol 10%, 13% of hydroxyethyl acrylate-vinyl acetate copolymer of step (1), 3% of chain extender, Catalyst 0.1%, neutralizer 2%, defoamer 0.3% and water balance, add diisocyanate, polyester polyol and catalyst in the reaction kettle, raise the temperature to 90°C and react for 3h, then add hydroxyethyl acrylate-acetic acid Vinyl ester copolymer, continue to keep warm for 3...

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PUM

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Abstract

The invention relates to the technical field of blister cement processing, in particular to a water-based blister cement and a preparation method thereof.In synthesis of polyurethane, hydroxyethyl acrylate and vinyl acetate are introduced into a polyurethane molecular chain, the Tg point of hydroxyethyl acrylate is low, the heat after-tack of a copolymer can be improved, and the heat after-tack of the copolymer can be improved; vinyl acetate can improve the compatibility of urethane acrylate and vinyl acetate-ethylene copolymer emulsion, so that the urethane acrylate and the vinyl acetate-ethylene copolymer emulsion can be fully swelled and mixed, in the hot melting process, the vinyl acetate-ethylene copolymer is softened to recover the initial viscosity and can infiltrate a plastic blister and improve the adhesiveness, in the re-curing process, the polyurethane acrylate improves strong cohesive energy so as to improve the peel strength of the plastic uptake rubber, and meanwhile, when the plastic uptake rubber is placed at normal temperature, the plastic uptake rubber also has better after-tack resistance, so that the use requirement of the paper-plastic composite plastic uptake rubber is met.

Description

technical field [0001] The invention relates to the technical field of blister processing, in particular to a water-based blister and a preparation method thereof. Background technique [0002] Traditional vacuum plastic is widely used in the manufacture of computer desks, dressing tables, cabinets, door panels and furniture. The construction process is to cover the PVC film on the density board that has been dried after spraying glue, heat and soften the PVC through a vacuum suction machine and activate the plastic suction glue, use vacuum to remove the air between the PVC film and the density board film, rely on the atmosphere The pressure makes the PVC film stick tightly to the MDF. [0003] In the field of paper-plastic packaging, paperboards such as Zhonghua White Card / Gold and Silver Card / laser paper / white board paper and blisters such as PET / APET / PETG / PVC can also be bonded by blister glue. Currently, they are mainly used in toothbrushes, batteries, For packaging in...

Claims

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Application Information

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IPC IPC(8): C08L31/04C08L75/06C08G18/66C08G18/42C08G18/62C08G18/32
CPCC08L31/04C08G18/6651C08G18/4063C08G18/42C08G18/6229C08G18/3855C08L75/06
Inventor 赵建国
Owner 东莞市冠力胶业有限公司
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