CN106010303A - Guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive and preparation method thereof - Google Patents
Guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive and preparation method thereof Download PDFInfo
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- CN106010303A CN106010303A CN201610344888.XA CN201610344888A CN106010303A CN 106010303 A CN106010303 A CN 106010303A CN 201610344888 A CN201610344888 A CN 201610344888A CN 106010303 A CN106010303 A CN 106010303A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
Abstract
The invention discloses a guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive and a preparation method thereof. Main components of the guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive comprise tap water, modified guar gum, a de-foaming agent, a buffering agent, an emulsifier, an initiator, methacrylic acid, vinyl acetate, a self-cross-linking monomer, a plasticizer, a catalyst and a preservative. The modified guar gum is used as protective colloid; almost primary hydroxyl and secondary hydroxyl on a straight chain in a guar gum molecular structure are located at the outer side so that a hydrogen bond combining area is the largest; a process of increasing the amount of the polymerization initiator at an initial period and directly dropwise adding the monomer to polymerize is adopted and the homogeneous nucleation quantity is increased, so that the quantity of latex particles in a system is increased and a low-solid and high-viscosity adhesive product is prepared.
Description
Technical field
The present invention relates to adhesive technology of preparing, particularly relate to a kind of guar gum modified ethylene acetate viscous adhesive preparation method of low solid height.
Background technology
Guar gum, is a kind of plant gum extracted from leguminous plant, and it is poly-galactose mannose in chemical composition.Guar gum is macromole Natural hydrophilic colloid, belongs to natural galacto mannan, is a kind of natural thickening agent.Outward appearance is to yellowish free flowing powder from white, can be dissolved in cold water or hot water, after meeting water and form colloid substance, reaches effect of rapid thickening.Guar gum is known most effective and that water solublity is best natural polymer.At low concentrations, highly viscous solution can be formed；Show non newtonian rheological behavior, form acid reversible gel with Borax.Due to its special performance, it is applied to the industries such as food, pharmacy, individual health care, adhesive and textile printing and dyeing.
China forest resourceies are deficient, industry of artificial boards develop the wretched insufficiency that can make up timber resources rapidly, thus driven the flourish of Wood Adhesive.Present stage, China mainly uses Lauxite or synvaren, but in use can produce free formaldehyde due to it, environmental and human health impacts is caused serious harm.Aqua type polyvinyl acetate (PVAc) adhesive is one of environment-friendly adhesive kind that current purposes is the widest, consumption is maximum.It is to obtain with water for disperse medium carries out emulsion polymerization, is a kind of aqueous, environmental protective glue.Owing to having that good film-forming property, adhesive strength be high, diluted alkaline good, easy to use, the low price of curing rate diluted acid fast, resistance to, without features such as organic solvents; be widely used in timber, furniture, fit up, print, weave, leather, the industry such as papermaking, be that one very environmental protection sticks with glue agent.
As pressing plate polyvinyl acetate emulsion, relatively low solid content content can reach requirement of strength, but due to the requirement of workman's construction technology, prevents glue from trickling, and typically requires that glue has higher viscosity, usually tens0000 centipoise.Low solid content to be obtained; full-bodied product; gelatinizing would generally be carried out again by phase addition starch after polymerisation; the adhesive producing process time is made to extend; cause unnecessary energy waste; starch is physical change process in this process, does not carries out graft polymerization reaction with vinylacetate, and during depositing, glue has the danger of layering.Simultaneously as starch is the most mouldy, the later stage needs to add the antifungus agent of volume, adds a certain amount of cost.
Summary of the invention
Present invention aim at for the deficiency increasing low solid content polyvinyl acetate emulsion viscosity with starch gelatinization technique, it is provided that a kind of low solid height with guar gum as protecting colloid glues pressing plate adhesive and synthetic method thereof.The low solid high viscose glue stick of the present invention is with guar gum as protecting colloid, and guar gum has renewable, pollution-free, low cost and other advantages, can reduce the consumption of non-renewable resources oil etc., and reduce cost；With water as disperse medium, easy to use, environmentally safe, to pollution-free by adhesive material, by force, synthetic method has easy and simple to handle, the feature that preparation efficiency is high for normal temperature cure or hot pressing, viscosity height, adhesive strength.
For achieving the above object, the present invention is by the following technical solutions: the low solid height of a kind of guar gum modified ethylene acetate glues pressing plate adhesive, and the component including following parts by weight forms:
Further, described modified guar is hydroxypropyl guar gum.
Further, described defoamer is BYK024, and buffer agent is sodium acetate, and initiator is Ammonium persulfate., and emulsifying agent is the sub-CO436 in sieve ground, and plasticizer is Yi Shiman TXIB, and preservative is LXE antibacterial, and catalyst is six nitric hydrate aluminum, and accelerator is citric acid.
Further, described self-cross linking monomer is cyanogen specialization work hydroxyl first acrylamide solution (NMA mass fraction is 48%).
A kind of preparation method of the guar gum modified ethylene acetate viscous pressing plate adhesive of low solid height, the method comprises the technical steps that:
A, the initiator of 0.03-0.04 weight portion is dissolved in 0.97-1.3 weight parts water, obtains 1.0-1.34 weight portion initiator solution；The self-cross linking monomer of 1.2-1.4 weight portion is scattered in 1.2-1.4 weight parts water, obtains 2.4-2.8 weight portion self-cross linking monomer aqueous solution；The vinylacetate of 21.0-23.0 parts by weight and the methacrylic acid of 1.2-1.4 parts by weight are added monomer groove tank mixing and stirring, makes the mix monomer of 22.2-24.4 weight portion；
B, the water of residue 70.95-66.8 weight portion is added in reactor, start stirring, add 0.1-0.12 weight portion defoamer, 0.1-0.12 parts by weight Emulsifier, 0.1-0.12 weight portion buffer agent, the modified guar of 1.8-2.0 parts by weight, is warmed up to 60 DEG C, and dispersed with stirring makes modified guar fully dissolve in 90 minutes；
C, it is warming up to 72 DEG C, add the 0.4-0.54 weight portion initiator solution of step a preparation, then the 22.2-24.4 weight portion mix monomer of step a preparation and remaining 0.6-0.8 weight portion initiator solution it are simultaneously added dropwise, control mix monomer to drip off at 3.0-3.5 hour, initiator solution dripped off at 3.5-4.0 hour, and the time for adding of mix monomer is less than the time for adding 0.5h of initiator solution；After mix monomer has dripped 1.5 hours, start to drip the 2.4-2.8 weight portion cross-linking monomer aqueous solution of step a preparation, control to drip at 1.5-2 hour, and ensure that cross-linking monomer aqueous solution has been simultaneously added dropwise with mix monomer；
After d, mix monomer add continuation reaction 20 minutes, it is warming up to 88 DEG C, after insulation reaction 30 minutes, it is cooled to less than 50 DEG C and adds 0.2-0.4 part by weight of catalyst, 0.15-0.2 weight portion accelerator, the carbamide of 0.5-0.8 weight portion, the plasticizer of 0.4-0.6 weight portion and the preservative of 0.1-0.3 weight portion, 20 minutes mix homogeneously of cooling limit, limit stirring, evacuation discharging forms finished product.
The invention has the beneficial effects as follows: 1, guar gum molecular structure does not has non-polar group, major part primary hydroxyl and secondary hydroxyl to be at outside on straight chain, and galactose side chain does not cover the alcoholic extract hydroxyl group of activity.Thus guar gum has the hydrogen bonded area of maximum, the hydrogen bonded of formation is apart from short, and adhesion is big, so showing the highest viscosity；2, guar gum is through hydroxypropylation, hydroxylpropyl groups is introduced in guar gum molecular structure, the hydroxypropyl guar gum ether generated, modified product hydrophilic improves, add the branch degree of molecule, make its water-soluble speed accelerate, increase film forming procedure and NMA crosslinking points, increase and between base material dispersion power effect thus improve adhesion；3,40% ammonium persulfate solution is added in a kettle. by the initial stage on polymerization technique, produce a large amount of free radical during heating, when instilling monomer in system, make homogeneous nucleation and Micellar nucleation carry out simultaneously, emulsion particle number in increase system, thus improve product viscosity；4, aluminum nitrate is as lewis acid, can be catalyzed methylol and form three-dimensional net structure with the self-crosslinking in film forming procedure of carboxyl, hydroxyl in polymer chain.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention will be described in detail.
Embodiment one
Formula: total amount=1000kg
Production technology:
A, the Ammonium persulfate. of 0.3kg is dissolved in 9.7kg water, obtains 10kg ammonium persulfate solution；12kgNMA-48% is scattered in 12kg water, obtains 24kgNMA aqueous solution；210kg vinylacetate and 12kg methacrylic acid are added monomer groove tank mixing and stirring, makes 222kg mix monomer；
B, general's residue 709.5kg water add in reactor, start stirring, add 1kgBYK024,1kgCO436,1kg sodium acetate, 18kg hydroxypropyl guar gum, be warmed up to 60 DEG C, and dispersed with stirring makes hydroxypropyl guar gum fully dissolve in 90 minutes；
C, being warming up to 72 DEG C, add the 4kg ammonium persulfate solution of step a preparation, be then simultaneously added dropwise the 222kg mix monomer of step a preparation and remaining 6kg ammonium persulfate solution, control mix monomer and dripped off at 3.0 hours, ammonium persulfate solution dripped off at 3.5 hours；After mix monomer has dripped 1.5 hours, start to drip the 24kgNMA aqueous solution of step a preparation, control to drip at 1.5 hours；
After d, mix monomer add continuation reaction 20 minutes, it is warming up to 88 DEG C, after insulation reaction 30 minutes, it is cooled to less than 50 DEG C and adds 2kg six nitric hydrate aluminum, 1.5kg citric acid, 5kg carbamide, 4kgTXIB and 1kgLEX antibacterial, 20 minutes mix homogeneously of cooling limit, limit stirring, evacuation discharging forms finished product.
Embodiment two formula: total amount=1000kg
| Hydroxypropyl guar gum | 19kg | NMA-48% | 13kg |
| BYK024 | 1.1kg | Aluminum nitrate | 3kg |
| CO436 | 1.1kg | Citric acid | 1.8kg |
| Sodium acetate | 1.1kg | Carbamide | 6kg |
| Ammonium persulfate. | 0.3kg | TXIB | 5kg |
| Vinylacetate | 220kg | LEX antibacterial | 2kg |
| Methacrylic acid | 13kg | Water | 713.6kg |
Production technology:
A, the Ammonium persulfate. of 0.3kg is dissolved in 9.7kg water, obtains 10kg ammonium persulfate solution；13kgNMA-48% is scattered in 13kg water, obtains 26kgNMA aqueous solution；220kg vinylacetate and 13kg methacrylic acid are added monomer groove tank mixing and stirring, makes 233kg mix monomer；
B, general's residue 690.9kg water add in reactor, start stirring, add 1.1kgBYK024,1.1kgCO436,1.1kg sodium acetate, 19kg hydroxypropyl guar gum, be warmed up to 60 DEG C, and dispersed with stirring makes hydroxypropyl guar gum fully dissolve in 90 minutes；
C, being warming up to 72 DEG C, add the 4kg ammonium persulfate solution of step a preparation, be then simultaneously added dropwise the 233kg mix monomer of step a preparation and remaining 6kg ammonium persulfate solution, control mix monomer and dripped off at 3.2 hours, ammonium persulfate solution dripped off at 3.7 hours；After mix monomer has dripped 1.5 hours, start to drip the 26kgNMA aqueous solution of step a preparation, control to drip at 1.7 hours；
After d, mix monomer add continuation reaction 20 minutes, it is warming up to 88 DEG C, after insulation reaction 30 minutes, it is cooled to less than 50 DEG C and adds 3kg six nitric hydrate aluminum, 1.8kg citric acid, 6kg carbamide, 5kgTXIB and 2kgLEX antibacterial, 20 minutes mix homogeneously of cooling limit, limit stirring, evacuation discharging forms finished product.
Embodiment three formula: total amount=1000kg
| Hydroxypropyl guar gum | 20kg | NMA-48% | 14kg |
| BYK024 | 1.2kg | Aluminum nitrate | 4kg |
| CO436 | 1.2kg | Citric acid | 2kg |
| Sodium acetate | 1.2kg | Carbamide | 8kg |
| Ammonium persulfate. | 0.4kg | TXIB | 6kg |
| Vinylacetate | 230kg | LEX antibacterial | 3kg |
| Methacrylic acid | 14kg | Water | 695kg |
Production technology:
A, the Ammonium persulfate. of 0.4kg is dissolved in 13kg water, obtains 13.4kg ammonium persulfate solution；14kgNMA-48% is scattered in 14kg water, obtains 28kgNMA aqueous solution；230kg vinylacetate and 14kg methacrylic acid are added monomer groove tank mixing and stirring, makes 244kg mix monomer；
B, general's residue 668kg water add in reactor, start stirring, add 1.2kgBYK024,1.2kgCO436,1.2kg sodium acetate, 20kg hydroxypropyl guar gum, be warmed up to 60 DEG C, and dispersed with stirring makes hydroxypropyl guar gum fully dissolve in 90 minutes；
C, being warming up to 72 DEG C, add the 5.4kg ammonium persulfate solution of step a preparation, be then simultaneously added dropwise the 244kg mix monomer of step a preparation and remaining 8kg ammonium persulfate solution, control mix monomer and dripped off at 3.5 hours, ammonium persulfate solution dripped off at 4 hours；After mix monomer has dripped 1.5 hours, start to drip the 28kgNMA aqueous solution of step a preparation, control to drip at 2 hours；
After d, mix monomer add continuation reaction 20 minutes, it is warming up to 88 DEG C, after insulation reaction 30 minutes, it is cooled to less than 50 DEG C and adds 4kg six nitric hydrate aluminum, 2kg citric acid, 8kg carbamide, 6kgTXIB and 3kgLEX antibacterial, 20 minutes mix homogeneously of cooling limit, limit stirring, evacuation discharging forms finished product.
Embodiment 1 to embodiment 3 product physics and performance indications, according to HJ/T220-2005, GB/T185832008 and HG/T2727-2010 standard detection, it is as shown in the table for standard testing result.
。
Claims (5)
1. the guar gum modified ethylene acetate viscous pressing plate adhesive of low solid height, it is characterised in that include that the component of following parts by weight forms:
。
The guar gum modified ethylene acetate the most according to claim 1 viscous pressing plate adhesive of low solid height, it is characterised in that: described modified guar is hydroxypropyl guar gum.
The guar gum modified ethylene acetate the most according to claim 1 viscous pressing plate adhesive of low solid height, it is characterized in that: described defoamer can be BYK024, buffer agent can be sodium acetate, initiator can be Ammonium persulfate., emulsifying agent can be that sieve ground sub-CO436, plasticizer Ke Yi are Yi Shiman TXIB, and preservative can be LXE antibacterial, catalyst can be six nitric hydrate aluminum, and accelerator can be citric acid.
The guar gum modified ethylene acetate the most according to claim 1 viscous pressing plate adhesive of low solid height, it is characterised in that: described self-cross linking monomer is cyanogen specialization work hydroxyl first acrylamide solution (NMA mass fraction is 48%).
5. the preparation method of the guar gum modified ethylene acetate viscous pressing plate adhesive of low solid height described in a claim 1, it is characterised in that the method comprises the technical steps that:
A, the initiator of 0.03-0.04 weight portion is dissolved in 0.97-1.3 weight parts water, obtains 1.0-1.34 weight portion initiator solution；The self-cross linking monomer of 1.2-1.4 weight portion is scattered in 1.2-1.4 weight parts water, obtains 2.4-2.8 weight portion self-cross linking monomer aqueous solution；The vinylacetate of 21.0-23.0 parts by weight and the methacrylic acid of 1.2-1.4 parts by weight are added monomer groove tank mixing and stirring, makes the mix monomer of 22.2-24.4 weight portion；
B, the water of residue 70.95-66.8 weight portion is added in reactor, start stirring, add 0.1-0.12 weight portion defoamer, 0.1-0.12 parts by weight Emulsifier, 0.1-0.12 weight portion buffer agent, the modified guar of 1.8-2.0 parts by weight, is warmed up to 60 DEG C, and dispersed with stirring makes modified guar fully dissolve in 90 minutes；
C, it is warming up to 72 DEG C, add the 0.4-0.54 weight portion initiator solution of step a preparation, then the 22.2-24.4 weight portion mix monomer of step a preparation and remaining 0.6-0.8 weight portion initiator solution it are simultaneously added dropwise, control mix monomer to drip off at 3.0-3.5 hour, initiator solution dripped off at 3.5-4.0 hour, and the time for adding of mix monomer is less than the time for adding 0.5h of initiator solution；After mix monomer has dripped 1.5 hours, start to drip the 2.4-2.8 weight portion cross-linking monomer aqueous solution of step a preparation, control to drip at 1.5-2 hour, and ensure that cross-linking monomer aqueous solution has been simultaneously added dropwise with mix monomer；
After d, mix monomer add continuation reaction 20 minutes, it is warming up to 88 DEG C, after insulation reaction 30 minutes, it is cooled to less than 50 DEG C and adds 0.2-0.4 part by weight of catalyst, 0.15-0.2 weight portion accelerator, the carbamide of 0.5-0.8 weight portion, the plasticizer of 0.4-0.6 weight portion and the preservative of 0.1-0.3 weight portion, 20 minutes mix homogeneously of cooling limit, limit stirring, evacuation discharging forms finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610344888.XA CN106010303A (en) | 2016-05-23 | 2016-05-23 | Guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive and preparation method thereof |
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| CN201610344888.XA CN106010303A (en) | 2016-05-23 | 2016-05-23 | Guar gum modified vinyl acetate low-solid and high-viscosity pressing plate adhesive and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747141A (en) * | 2016-12-19 | 2017-05-31 | 安徽巨力新型环保材料有限公司 | A kind of outer lamina membranacea exempts to tear compound insulation system open |
| CN107057615A (en) * | 2017-05-23 | 2017-08-18 | 苏州大学 | A kind of Guar viscose binder and preparation method thereof |
| CN109266285A (en) * | 2018-09-06 | 2019-01-25 | 顶立新材料科技有限公司 | A kind of environment-friendly water-based adhesive of multi-layered board gluing processing of lac modified polyvinyl acetate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140773A (en) * | 2014-07-31 | 2014-11-12 | 台州学院 | Repairable veneer adhesive and synthesizing method thereof |
| CN104220395A (en) * | 2012-02-24 | 2014-12-17 | 赫尔克里士公司 | Nanocrystalline cellulose (NCC) in tape joint compound (JC) |
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2016
- 2016-05-23 CN CN201610344888.XA patent/CN106010303A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104220395A (en) * | 2012-02-24 | 2014-12-17 | 赫尔克里士公司 | Nanocrystalline cellulose (NCC) in tape joint compound (JC) |
| CN104140773A (en) * | 2014-07-31 | 2014-11-12 | 台州学院 | Repairable veneer adhesive and synthesizing method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106747141A (en) * | 2016-12-19 | 2017-05-31 | 安徽巨力新型环保材料有限公司 | A kind of outer lamina membranacea exempts to tear compound insulation system open |
| CN106747141B (en) * | 2016-12-19 | 2019-07-09 | 安徽巨力新型环保材料有限公司 | A kind of exterior sheathing exempts to tear compound insulation system open |
| CN107057615A (en) * | 2017-05-23 | 2017-08-18 | 苏州大学 | A kind of Guar viscose binder and preparation method thereof |
| CN109266285A (en) * | 2018-09-06 | 2019-01-25 | 顶立新材料科技有限公司 | A kind of environment-friendly water-based adhesive of multi-layered board gluing processing of lac modified polyvinyl acetate |
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Application publication date: 20161012 |