CN102994006A - Nontoxic adhesive and method for preparing same - Google Patents
Nontoxic adhesive and method for preparing same Download PDFInfo
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- CN102994006A CN102994006A CN 201210482656 CN201210482656A CN102994006A CN 102994006 A CN102994006 A CN 102994006A CN 201210482656 CN201210482656 CN 201210482656 CN 201210482656 A CN201210482656 A CN 201210482656A CN 102994006 A CN102994006 A CN 102994006A
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- polyvinyl alcohol
- sodium hydroxide
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Abstract
The invention relates to a nontoxic adhesive and a method for preparing the same. The nontoxic adhesive is composed of major ingredients and auxiliary ingredients, wherein the major ingredients include konjaku flour, chitosan and polyvinyl alcohol; and the auxiliary ingredients include sodium hydroxide, borax, phosphoric acid, nano-garamite, urea and a defoamer. The method for preparing the nontoxic adhesive comprises the following steps of: (1) firstly, dissolving the polyvinyl alcohol in water, adding the urea and the borax, and finally adding the chitosan and stirring until the chitosan is completely dissolved, thereby obtaining a component A; (2) adding the konjaku flour to the sodium hydroxide solution and stirring until the konjaku flour is completely dissolved, thereby obtaining a component B; (3) mixing the component A, the component B, the defoamer and the nano-garamite together and stirring evenly, thereby obtaining the nontoxic adhesive. The nontoxic adhesive is environment-friendly and safe, high in bonding strength and good in waterproofness; and the preparation method is also simple and easy to operate.
Description
Technical field
The present invention relates to a kind of nontoxic sizing agent and preparation method thereof.
Background technology
Along with science and technology develops rapidly, the development that sizing agent industry is also advanced by leaps and bounds for society provides many virgin rubber kinds, has also brought new pollution problem to environment simultaneously.
Have a lot of volatile organic compounds (VOC) in the existing sizing agent, such as the organic solvent in the solvent-based adhesive, these organic solvents are poisonous and hazardous mostly, and for example some halogenated hydrocarbon solvent is the material that destroys atmospheric ozone layer; Aromatic hydrocarbon solvent toxicity is very large, even carinogenicity is arranged.Present the most frequently used phenolic aldehyde, urea aldehyde, melamino-formaldehyde sizing agent, its excellent property, applied range, but wherein contain free formaldehyde; The vinylbenzene that contains in the unsaturated polyester sizing agent for another example; Contain unreacted organic monomer in the acrylic ester emulsion sizing agent; The fast fixing structure sizing agent of modification acrylate contains methyl methacrylate; Adhesive for polyurethane contains polyisocyanates; α one cyanoacrylate sizing agent contains sulfurous gas; Contain methyl alcohol in 4115 building adhesives; Thickening material in the acrylic ester emulsion is ammoniacal liquor, and material contained in these sizing agents has plenty of volatile substances, is discharged in the atmosphere harm very large; Photo-actinic action can occur in some materials, produces ozone, and the ozone pollution atmosphere of low sheaf space affect the growth of plant and the mankind's health, and the irritating smells such as methyl methacrylate, sulfurous gas is large, pollute also to worsen atmospheric environment.
Objectionable impurities in the sizing agent mainly is benzene, toluene, formaldehyde, methyl alcohol, vinylbenzene, trichloromethane, tetracol phenixin, 1,2-ethylene dichloride, tolylene diisocyanate, mphenylenediamine, tritolyl phosphate, quadrol, xylidine, antioxidant D, coal tar, asbestos powder, silica powder etc.
The use natural polymers is also arranged at present, and such as the sizing agent as timber such as soybean protein, but the sheet material ubiquity bonding strength of gluing together with this kind sizing agent is low and the shortcoming such as poor water resistance.
Summary of the invention
The object of the invention is to for the defective of above-mentioned existence and a kind of nontoxic sizing agent and preparation method thereof is provided, this nontoxic sizing agent Environmental Safety, bonding strength is high and water resistance good, and its preparation method is also simple to operation.
Technical scheme of the present invention is: a kind of nontoxic sizing agent, and composition of raw materials is comprised of host and auxiliary agent, and host is made of following component: 100g Rhizoma amorphophalli powder, 10g chitosan, 50g polyvinyl alcohol; Auxiliary agent comprises sodium hydroxide, borax, phosphoric acid, nano-bentonite, urea and deaerating agent, and wherein nano-bentonite is 1g, and borax is 2.0g, and urea is 2g.
The preparation method of described nontoxic sizing agent may further comprise the steps:
(1) at first the polyvinyl alcohol of 50g is dissolved in the water, dissolve rear adding phosphoric acid fully until polyvinyl alcohol, regulate the pH value to 5 of polyvinyl alcohol water solution, then be heated to 80 ℃, stirred 20 minutes, and added again phosphorus acid for adjusting pH value to 2.0, continue to be warming up to 85 ℃, after reacting 70 minutes, be cooled to 65 ℃; Add the urea of 2g and the borax of 2.0g, the rear adding sodium hydroxide that stirs is regulated pH value to 10, and the chitosan that adds at last 10g is stirred to chitosan and dissolves fully, obtains component A;
(2) the 100g Rhizoma amorphophalli powder is joined in the sodium hydroxide solution of 500g, be stirred to Rhizoma amorphophalli powder and dissolve fully, obtain B component, wherein the massfraction of sodium hydroxide solution is 10%;
(3) the nano-bentonite mixing and stirring with component A, B component, deaerating agent and 1.0g namely obtains this nontoxic sizing agent.
Beneficial effect of the present invention is: the Rhizoma amorphophalli powder in the sizing agent raw material of the present invention has very strong water-absorbent, strengthens the water tolerance of sizing agent.Chitosan contains the effect that a large amount of hydroxyls plays linking agent.Borax can make the polyvinyl alcohol gluing agent of liquid become curdled appearance, and is tack-free, and can be water-fast, stops infiltration, greatly improves the water tolerance of sizing agent.The more existing sizing agent of this sizing agent does not contain organic volatile, pollutes little more environmental protection, and cohesive strength is stronger, and water resistance is higher, and production cost is low simultaneously, is easy to the few sizing agent of the nontoxic pollution of scale operation.
Embodiment
Embodiment 1
A kind of nontoxic sizing agent, composition of raw materials is comprised of host and auxiliary agent, and host is made of following component: 100g Rhizoma amorphophalli powder, 10g chitosan, 50g polyvinyl alcohol; Auxiliary agent comprises sodium hydroxide, borax, phosphoric acid, nano-bentonite, urea and deaerating agent, and wherein nano-bentonite is 1g, and borax is 2.0g, and urea is 2g.
The preparation method of described nontoxic sizing agent may further comprise the steps:
(1) at first the polyvinyl alcohol of 50g is dissolved in the water, dissolve rear adding phosphoric acid fully until polyvinyl alcohol, regulate the pH value to 5 of polyvinyl alcohol water solution, then be heated to 80 ℃, stirred 20 minutes, and added again phosphorus acid for adjusting pH value to 2.0, continue to be warming up to 85 ℃, after reacting 70 minutes, be cooled to 65 ℃; Add the urea of 2g and the borax of 2.0g, the rear adding sodium hydroxide that stirs is regulated pH value to 10, and the chitosan that adds at last 10g is stirred to chitosan and dissolves fully, obtains component A;
(2) the 100g Rhizoma amorphophalli powder is joined in the sodium hydroxide solution of 500g, be stirred to Rhizoma amorphophalli powder and dissolve fully, obtain B component, wherein the massfraction of sodium hydroxide solution is 10%;
(3) the nano-bentonite mixing and stirring with component A, B component, deaerating agent and 1.0g namely obtains this nontoxic sizing agent.
Claims (2)
1. a nontoxic sizing agent is characterized in that, composition of raw materials is comprised of host and auxiliary agent, and host is made of following component: 100g Rhizoma amorphophalli powder, 10g chitosan, 50g polyvinyl alcohol; Auxiliary agent comprises sodium hydroxide, borax, phosphoric acid, nano-bentonite, urea and deaerating agent, and wherein nano-bentonite is 1g, and borax is 2.0g, and urea is 2g.
2. the preparation method of the described nontoxic sizing agent of claim 1 may further comprise the steps:
(1) at first the polyvinyl alcohol of 50g is dissolved in the water, dissolve rear adding phosphoric acid fully until polyvinyl alcohol, regulate the pH value to 5 of polyvinyl alcohol water solution, then be heated to 80 ℃, stirred 20 minutes, and added again phosphorus acid for adjusting pH value to 2.0, continue to be warming up to 85 ℃, after reacting 70 minutes, be cooled to 65 ℃; Add the urea of 2g and the borax of 2.0g, the rear adding sodium hydroxide that stirs is regulated pH value to 10, and the chitosan that adds at last 10g is stirred to chitosan and dissolves fully, obtains component A;
(2) the 100g Rhizoma amorphophalli powder is joined in the sodium hydroxide solution of 500g, be stirred to Rhizoma amorphophalli powder and dissolve fully, obtain B component, wherein the massfraction of sodium hydroxide solution is 10%;
(3) the nano-bentonite mixing and stirring with component A, B component, deaerating agent and 1.0g namely obtains this nontoxic sizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210482656 CN102994006A (en) | 2012-11-26 | 2012-11-26 | Nontoxic adhesive and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210482656 CN102994006A (en) | 2012-11-26 | 2012-11-26 | Nontoxic adhesive and method for preparing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102994006A true CN102994006A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210482656 Pending CN102994006A (en) | 2012-11-26 | 2012-11-26 | Nontoxic adhesive and method for preparing same |
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| CN (1) | CN102994006A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974683A (en) * | 2015-06-12 | 2015-10-14 | 广西大学 | Preparation method of konjak powder-chitosan-PVA mixed binder |
| CN106047222A (en) * | 2016-06-15 | 2016-10-26 | 安徽扬帆充气游乐设备制造有限公司 | High adhesive strength adhesive for inflatable boat |
| CN106047221A (en) * | 2016-06-15 | 2016-10-26 | 安徽扬帆充气游乐设备制造有限公司 | Adhesive with excellent adhesive property for inflatable boats |
| CN106336829A (en) * | 2016-09-07 | 2017-01-18 | 江南大学 | Preparation method for DA (Dopamine)-based adhesive |
-
2012
- 2012-11-26 CN CN 201210482656 patent/CN102994006A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104974683A (en) * | 2015-06-12 | 2015-10-14 | 广西大学 | Preparation method of konjak powder-chitosan-PVA mixed binder |
| CN104974683B (en) * | 2015-06-12 | 2018-10-26 | 邳州市金丰木质纤维粉有限公司 | The preparation method of adhesive is blended in a kind of konjaku flour-chitosan-PVA |
| CN106047222A (en) * | 2016-06-15 | 2016-10-26 | 安徽扬帆充气游乐设备制造有限公司 | High adhesive strength adhesive for inflatable boat |
| CN106047221A (en) * | 2016-06-15 | 2016-10-26 | 安徽扬帆充气游乐设备制造有限公司 | Adhesive with excellent adhesive property for inflatable boats |
| CN106336829A (en) * | 2016-09-07 | 2017-01-18 | 江南大学 | Preparation method for DA (Dopamine)-based adhesive |
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Application publication date: 20130327 |