Preparation method of ultraviolet light curing composite binding agent

A composite adhesive and ultraviolet light technology, which is applied in the direction of grafted polymer adhesives, adhesive types, adhesives, etc., can solve the problems of high toxicity, high viscosity, poor adhesion and medium resistance, etc. Achieve the effect of improving bonding and anti-medium performance, moderate viscosity

Inactive Publication Date: 2010-08-11
NANTONG GAOMENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to bringing a lot of VOC (VOLATILE OR-GANIC COMPOUNDS, volatile organic compounds) emissions to the environment during use, it also caused a lot of waste of resources
Moreover, the existing light-curing solvent-based polyurethane composite adhesives have relatively high viscosity and require the addition of highly toxic multifunctional reactive diluents, resulting in high toxicity of ordinary UV-curing adhesives, poor environmental protection, and the existence of Disadvantages of poor adhesion and media resistance

Method used

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  • Preparation method of ultraviolet light curing composite binding agent
  • Preparation method of ultraviolet light curing composite binding agent
  • Preparation method of ultraviolet light curing composite binding agent

Examples

Experimental program
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Effect test

Embodiment 1

[0028] This embodiment 1 provides a preparation method of an ultraviolet (UV) light-cured composite adhesive, which is used to prepare a high-performance, environmentally friendly UV-cured composite adhesive. The method comprises the following steps:

[0029] (1) Preparation of polyester polyol:

[0030] Prepare each raw material of polyester polyol by mass percentage, comprise:

[0031] Sebacic acid 10-20%, 1,4 butanediol 15-25%, isophthalic acid 5-15%, terephthalic acid 5-10%, azelaic acid 5-15% and 1,2 propylene glycol 30% ~40%;

[0032] a. Primary esterification:

[0033] Add sebacic acid and 1,4-butanediol into the polyester synthesis kettle, heat up to 210-230°C, react for 2-3 hours, and distill 2-4kg of water;

[0034] b. Secondary esterification:

[0035] Add isophthalic acid, terephthalic acid, azelaic acid and 1,2 propylene glycol into the above-mentioned polyester synthesis kettle that has completed one-time esterification, raise the temperature to 210-230°C, an...

Embodiment 2

[0054] This embodiment 2 provides a preparation method of an ultraviolet (UV) light-cured composite adhesive, which is used to prepare a high-performance, environmentally friendly ultraviolet-cured composite adhesive. The method comprises the following steps:

[0055] (1) prepare polyester polyol, get each raw material by following mass percentage:

[0056]

[0057] The preparation method of polyester polyol:

[0058] a. Primary esterification:

[0059] Add sebacic acid and 1,4 butanediol into the polyester synthesis kettle, raise the temperature to 210-230°C, and react for 2-3 hours. The primary esterification is completed. During the primary esterification, the polyester synthesis kettle distills water for 2-3 hours. 4kg;

[0060] b. Secondary esterification:

[0061] Add isophthalic acid, terephthalic acid, azelaic acid and 1,2 propylene glycol into the above-mentioned polyester synthesis kettle that has completed primary esterification, raise the temperature to 210-2...

Embodiment 3

[0074] (1) prepare polyester polyol, get each raw material by following mass percentage:

[0075]

[0076]

[0077] The method for preparing polyester polyol is substantially the same as embodiment 2, and the method that provides with reference to embodiment 2 can prepare polyester polyol;

[0078] (2) Preparation of epoxy-modified polyurethane prepolymer:

[0079]

[0080] The preparation method of bad oxygen modified polyurethane prepolymer:

[0081] E-type bisphenol A epoxy resin E20, polyester polyol and terexylylene diisocyanate (XDI) were reacted at 65°C for 3 hours to prepare epoxy-modified polyurethane prepolymer. The -NCO content of the permanent polyurethane prepolymer is 3.9%;

[0082] (3) Preparation of epoxy-modified polyurethane acrylate:

[0083]

[0084] The preparation method of bad oxygen modified polyurethane acrylate:

[0085] React epoxy-modified polyurethane prepolymer and trimethylolpropane triacrylate (TMPTA) at 70°C for 5 to 6 hours, th...

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Abstract

The invention discloses a preparation method of an ultraviolet light curing composite binding agent, belonging to the field of the binding agent. The preparation method comprises the following steps: preparing polyester polyol: preparing the polyester polyol by primary esterification, secondary esterification and condensation polymerization; preparing epoxy modified polyurethane prepolymer: reacting hydroxyl-containing epoxy resin, the prepared polyester polyol and isocyanate to prepare the epoxy modified polyurethane prepolymer; and preparing epoxy modified urethane acrylate: reacting the prepared epoxy modified polyurethane prepolymer with an ultraviolet light initiator and a polymerization inhibitor and preparing the epoxy modified urethane acrylate, namely the ultraviolet light curing composite binding agent. By designing chain segments of a polyester structure and properly matching the types and quantity of alcohol acids, the invention prepares high-performance polyester, and introduces the epoxy resin into the polyurethane prepolymer chain segments so as form the ultraviolet light curing composite binding agent at the two ends, thus improving the binding and anti-medium performances of the ultraviolet light curing composite binding agent, omitting the adding of a polyfunctional active diluent with larger toxicity and being more environment-friendly.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a method for preparing an ultraviolet light-cured composite adhesive. Background technique [0002] Polyurethane acrylic acid (aneacrylate, PUA), as an important light-curable polymer material, can obtain tough cured products with high strength and toughness. Practice has proved that this resin material has excellent performance in adhesives and coatings. The light-curing technology of polymer materials has the advantages of rapid curing, environmental protection, energy saving, and convenient use, and has achieved rapid development in the fields of coatings, inks, electronic packaging, and adhesives. The annual growth rate is as high as 25%, and a new industry has gradually formed. [0003] At present, there are solvent-based polyurethane composite adhesives and ordinary UV-curable adhesives, which are widely used in the food flexible packaging composite adhesive industry. However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J151/08
Inventor 赫长生沈峰邓煜东
Owner NANTONG GAOMENG NEW MATERIAL
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