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A kind of EVA hot-melt adhesive with good oil resistance and anti-aging performance and preparation method thereof

An anti-aging, hot-melt adhesive technology, used in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of phase interface aging, poor compatibility, performance degradation, etc., and achieve excellent high temperature resistance. The effect of excellent grease resistance and excellent anti-aging properties

Active Publication Date: 2021-11-02
四川省新康意新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the modification of EVA, it is often necessary to add some additives to the cross-linked modified film. However, due to the poor compatibility of small molecule additives and EVA, aging defects occur between phase interfaces during long-term UV and damp heat aging.
On the other hand, improper use of additives will inevitably affect the affinity and synergy between other components of the film, resulting in reduced adhesion and serious performance attenuation after aging
At the same time, the application of existing EVA hot melt adhesives on kitchen supplies is limited, and it is also in urgent need of improvement.

Method used

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  • A kind of EVA hot-melt adhesive with good oil resistance and anti-aging performance and preparation method thereof
  • A kind of EVA hot-melt adhesive with good oil resistance and anti-aging performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An EVA hot-melt adhesive with good oil resistance and anti-aging performance is prepared by the following raw material components in parts by weight:

[0033] 60 parts of ethylene-vinyl acetate copolymers;

[0034] 10 parts of maleic rosin glyceryl acrylate;

[0035] 3 parts of tert-butyl peroxybenzoate;

[0036] Antioxidant 0.1 part;

[0037] 0.1 parts of initiator;

[0038] 2 parts of dispersant;

[0039] Filling 10 parts.

[0040] Wherein, the VA content is 25% in the ethylene-vinyl acetate copolymer, and the melt flow rate is 45g / 10min; The number average molecular weight of maleic rosin glyceryl acrylate is 1000.31; Antioxidant is antioxidant 1010; Initiator is Azobisisobutyronitrile; dispersant is acetone; filler is compounded by calcium carbonate, talcum powder and clay at a weight ratio of 1:2:1.

[0041] The preparation method of above-mentioned EVA hot-melt adhesive is as follows:

[0042] (1) Mix ethylene-vinyl acetate copolymer and tert-butyl peroxybe...

Embodiment 2

[0046] An EVA hot-melt adhesive with good oil resistance and anti-aging performance is prepared by the following raw material components in parts by weight:

[0047] 80 parts of ethylene-vinyl acetate copolymers;

[0048] Maleic rosin glyceryl acrylate 15 parts;

[0049] 6 parts of tert-butyl peroxybenzoate;

[0050] 0.5 part of antioxidant;

[0051] 0.5 parts of initiator;

[0052] 10 parts of dispersant;

[0053]Filling 15 parts.

[0054] Wherein, the VA content is 30% in the ethylene-vinyl acetate copolymer, and melt flow rate is 55g / 10min; The number average molecular weight of maleic rosin glyceryl acrylate is 2000; The antioxidant is 1076; Formyl; the dispersant is toluene; the filler is gypsum and mica powder in a weight ratio of 1:1.

[0055] The preparation method of above-mentioned EVA hot-melt adhesive is as follows:

[0056] (1) Mix ethylene-vinyl acetate copolymer and tert-butyl peroxybenzoate in parts by weight, add an initiator, mix in an internal mixer a...

Embodiment 3

[0060] An EVA hot-melt adhesive with good oil resistance and anti-aging performance is prepared by the following raw material components in parts by weight:

[0061] 70 parts of ethylene-vinyl acetate copolymers;

[0062] 12 parts of maleic rosin glyceryl acrylate;

[0063] 5 parts of tert-butyl peroxybenzoate;

[0064] 0.3 part of antioxidant;

[0065] 0.2 parts of initiator;

[0066] 6 parts of dispersant;

[0067] Filling 12 parts.

[0068] Among them, the VA content in the ethylene-vinyl acetate copolymer is 28%, and the melt flow rate is 50g / 10min; the number-average molecular weight of maleated rosin glyceryl acrylate is 1532.4; Dicumyl oxide (DCP); dispersant is petroleum ether; filler is diatomaceous earth.

[0069] The preparation method of above-mentioned EVA hot-melt adhesive is as follows:

[0070] (1) Mix ethylene-vinyl acetate copolymer and tert-butyl peroxybenzoate in parts by weight, add initiator, mix in an internal mixer at 180° C. for 15 minutes, then...

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Abstract

The invention provides an EVA hot-melt adhesive with anti-oil stain and good anti-aging performance and a preparation method thereof, belonging to the technical field of EVA adhesive materials. The EVA hot-melt adhesive provided by the invention comprises the following raw material components in parts by weight: 60-80 parts of ethylene-vinyl acetate copolymer; 10-15 parts of male rosin glyceryl acrylate; 3 parts of tert-butyl peroxybenzoate -6 parts; antioxidant 0.1-0.5 parts; initiator 0.1-0.5 parts; dispersant 2-10 parts, filler 10-15 parts. The EVA hot-melt adhesive product provided by the invention can be well used in kitchen utensils, has high grease resistance, can still have good bonding strength under the environment of heavy oil pollution and high temperature in the kitchen, and has the Excellent anti-aging properties.

Description

technical field [0001] The invention belongs to the technical field of EVA adhesive film materials, and in particular relates to an EVA hot-melt adhesive with good oil stain resistance and aging resistance and a preparation method thereof. Background technique [0002] Ethylene-Vinyl Acetate Copolymer Resin (EVA for short) is formed by bulk polymerization of ethylene and vinyl acetate at a certain temperature and high pressure. It is composed of polymer molecules with different chain lengths and chain structures. A polymer, the content of vinyl acetate (VA for short) in EVA is generally 5% to 40% (mass fraction), and the average molecular weight: 10,000 to 30,000. Compared with polyethylene, EVA resin increases the degree of branching of the polymer due to the introduction of VA monomer into the molecular chain, thereby reducing the crystallinity and improving flexibility, impact resistance, filler compatibility and heat sealing The product has good flexibility, impact stre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/08C09J11/04C09J11/06C09J11/08
CPCC08K2003/265C08K2003/3045C08L2201/08C09J11/04C09J11/06C09J11/08C09J123/0853C08L93/04C08K13/02C08K5/14C08K3/26C08K3/346C08K3/34C08K5/1345C08K3/30C08K13/04C08K7/26C08K5/005
Inventor 张仪亢健
Owner 四川省新康意新材料科技有限公司
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