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Hot-melt adhesive containing waste shellac residue and EVA and preparation method thereof

A hot-melt adhesive and shellac technology, which is applied in adhesives, natural resin chemical modification, adhesive additives, etc., can solve the problems of shellac processing enterprises' comprehensive benefits, resource waste, etc., achieve low softening point and enhance compatibility , the effect of high fluidity

Active Publication Date: 2019-01-15
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is generally burned as fuel, which causes a lot of waste of resources and has a great impact on the comprehensive benefits of shellac processing enterprises.

Method used

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  • Hot-melt adhesive containing waste shellac residue and EVA and preparation method thereof
  • Hot-melt adhesive containing waste shellac residue and EVA and preparation method thereof
  • Hot-melt adhesive containing waste shellac residue and EVA and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A hot-melt adhesive containing shellac waste residue glue and EVA, comprising: 10 parts by weight of dehydrated shellac waste residue glue, 85 parts by weight of EVA 625, 15 parts by weight of EVOH-01 (degree of hydrolysis 15.3%) obtained by hydrolysis of EVA760, 4 parts by weight of polymerized rosin glycidyl ester (PRG), 10 parts by weight of rosin glycidyl ester (RG), the composite tackifier is 10% of the sum of (EVA+EVOH) quality, and 1250 mesh light calcium carbonate is reactive co- 8% of the total mass of the mixture, 58 # The paraffin wax is 3% of the total mass of the reactive blend, and the antioxidant 1010 is 0.2% of the total mass of the reactive blend. Wherein, the composite tackifier is a mixture of C9 petroleum resin, terpene phenolic resin and rosin glyceride with a mass ratio of 1:0.8:0.5.

[0050] The preparation process is as figure 1 As shown, the specific operation steps are as follows:

[0051] (1) Preparation of dehydrated lac waste residue glue...

Embodiment 2

[0061] A hot-melt adhesive containing shellac waste residue glue and EVA, comprising: 15 parts by weight of dehydrated shellac waste residue glue, 63388 parts by weight of EVA, and 12 parts by weight of EVOH-02 (hydrolysis degree 27.5%) obtained by hydrolysis of EVA 40W , 6 parts by weight of polymerized rosin glycidyl ester, 8 parts by weight of rosin glycidyl ester, the composite tackifier is 15% of the sum of (EVA+EVOH) quality, calcium carbonate is 10% of the total mass of the reactive blend, paraffin wax It is 5% of the total mass of the reactive blend, and the antioxidant is 0.5% of the total mass of the reactive blend. Wherein, the composite tackifier is a mixture of C9 petroleum resin, terpene phenolic resin and rosin glyceride with a mass ratio of 1:1:1.

[0062] The preparation process is as figure 1 Shown, concrete operation step is roughly the same as embodiment 1, and difference is:

[0063] In step (1), vacuum drying at 78° C. for 12 hours;

[0064] EVA 760 in...

Embodiment 3

[0069] A hot-melt adhesive containing shellac waste residue glue and EVA, comprising: 25 parts by weight of dehydrated shellac waste residue glue, 71092 parts by weight of EVA, and 8 parts by weight of EVOH-03 (degree of hydrolysis 34.9%) obtained by hydrolysis of EVA UL04533CC , 8 parts by weight of polymerized rosin glycidyl ester, 6 parts by weight of rosin glycidyl ester, the composite tackifier is 25% of the sum of (EVA+EVOH) quality, calcium carbonate is 12% of the total mass of the reactive blend, paraffin wax It is 7% of the total mass of the reactive blend, and the antioxidant is 0.8% of the total mass of the reactive blend. Wherein, the composite tackifier is a mixture of C9 petroleum resin, terpene phenolic resin and rosin glyceride with a mass ratio of 1:1.2:1.

[0070] The preparation process is as figure 1 Shown, concrete operation step is roughly the same as embodiment 1, and difference is:

[0071] In step (1), vacuum drying at 70° C. for 16 hours;

[0072] ...

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Abstract

The invention discloses a hot-melt adhesive containing waste shellac residue and EVA and a preparation method thereof, wherein the hot-melt adhesive includes the waste shellac residue, EVA, EVOH, polymerized rosin glycidyl ester, rosin glycidyl ester, a composite tackifier, calcium carbonate, paraffin and an antioxidant. The preparation method comprises the following steps: (1) treatment of the shellac waste residue; (2) partial hydrolysis of EVA to prepare EVOH; (3) reactive blending of EVA, EVOH and the shellac waste residue with polymerized rosin glycidyl ester and rosin glycidyl ester; and(4) addition of the composite tackifier and other additives, melting mixing and discharging. The waste shellac residue is used in the prepared hot melt adhesive, so the amount of a traditional tackifier is greatly reduced and the hot-melt adhesive has a great advantage of raw material cost. Meanwhile, the hot-melt adhesive has suitable softening temperature and good melt fluidity, and good hot melt adhesion to various materials, thereby having broad application prospects.

Description

technical field [0001] The invention relates to a hot-melt adhesive containing lac waste residue glue and EVA and a preparation method thereof, belonging to the field of adhesives. Background technique [0002] Hot melt adhesive is a "green adhesive" that is composed of 100% thermoplastic polymers and does not contain organic solvents and water-based adhesive components. Because of its environmental protection advantages of fast curing speed, high production efficiency, convenient storage and transportation, good adhesion to various materials, and no solvent and no pollution, it has developed rapidly in recent years and is widely used in packaging and bookbinding. , shoe and timber industries. [0003] Most hot melt adhesives are made from thermoplastic polymers such as ethylene-vinyl acetate (EVA), polyamides, polyurethanes, and polyesters. EVA has a wide melt flow rate (MFR), good adhesion to various substrates and cheap price, and is the most commonly used thermoplastic...

Claims

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Application Information

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IPC IPC(8): C09J187/00C09J11/04C09J11/06C09J11/08C09F1/04C08G81/02
CPCC09F1/04C09J11/04C09J11/06C09J11/08C09J187/005C08G81/02C08L2205/035C08K2003/265C08L91/06C08L57/02C08L61/14C08L93/04C08K3/26C08K5/1345
Inventor 唐辉朱漫白张晓春
Owner KUNMING UNIV OF SCI & TECH
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