CN114479754A - Environment-friendly adhesive and preparation method thereof - Google Patents
Environment-friendly adhesive and preparation method thereof Download PDFInfo
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- CN114479754A CN114479754A CN202210223867.8A CN202210223867A CN114479754A CN 114479754 A CN114479754 A CN 114479754A CN 202210223867 A CN202210223867 A CN 202210223867A CN 114479754 A CN114479754 A CN 114479754A
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- cellulose
- friendly adhesive
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- 239000000853 adhesive Substances 0.000 title claims abstract description 101
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000002156 mixing Methods 0.000 claims abstract description 62
- 229920002678 cellulose Polymers 0.000 claims abstract description 52
- 239000001913 cellulose Substances 0.000 claims abstract description 51
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 45
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 45
- 239000003292 glue Substances 0.000 claims abstract description 44
- 239000000440 bentonite Substances 0.000 claims abstract description 43
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 43
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000004793 Polystyrene Substances 0.000 claims abstract description 35
- 229920002223 polystyrene Polymers 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- LCRMGUFGEDUSOG-UHFFFAOYSA-N naphthalen-1-ylsulfonyloxymethyl naphthalene-1-sulfonate;sodium Chemical compound [Na].C1=CC=C2C(S(=O)(OCOS(=O)(=O)C=3C4=CC=CC=C4C=CC=3)=O)=CC=CC2=C1 LCRMGUFGEDUSOG-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 14
- 239000003054 catalyst Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims description 35
- 239000011347 resin Substances 0.000 claims description 35
- 229920001285 xanthan gum Polymers 0.000 claims description 17
- 239000000230 xanthan gum Substances 0.000 claims description 17
- 229940082509 xanthan gum Drugs 0.000 claims description 17
- 235000010493 xanthan gum Nutrition 0.000 claims description 17
- 229920002472 Starch Polymers 0.000 claims description 12
- 229920001296 polysiloxane Polymers 0.000 claims description 12
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 11
- 239000008107 starch Substances 0.000 claims description 11
- 235000019698 starch Nutrition 0.000 claims description 11
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical compound CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 claims description 9
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 8
- 239000008098 formaldehyde solution Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- 238000003805 vibration mixing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 21
- 239000002699 waste material Substances 0.000 abstract description 9
- 238000004064 recycling Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 235000010980 cellulose Nutrition 0.000 description 45
- 239000000243 solution Substances 0.000 description 45
- 238000001179 sorption measurement Methods 0.000 description 36
- 229920002492 poly(sulfone) Polymers 0.000 description 23
- 239000000126 substance Substances 0.000 description 21
- 239000012528 membrane Substances 0.000 description 18
- 239000000843 powder Substances 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000005342 ion exchange Methods 0.000 description 8
- 238000000465 moulding Methods 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 150000001768 cations Chemical class 0.000 description 6
- 150000004676 glycans Chemical class 0.000 description 6
- -1 methylene diphenyl Chemical group 0.000 description 6
- 229920001282 polysaccharide Polymers 0.000 description 6
- 239000005017 polysaccharide Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000006116 polymerization reaction Methods 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229920002545 silicone oil Polymers 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 239000002817 coal dust Substances 0.000 description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920000856 Amylose Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- 241000589636 Xanthomonas campestris Species 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 150000001720 carbohydrates Chemical class 0.000 description 2
- 235000014633 carbohydrates Nutrition 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 230000009044 synergistic interaction Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 229920000945 Amylopectin Polymers 0.000 description 1
- 235000019890 Amylum Nutrition 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229920002261 Corn starch Polymers 0.000 description 1
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 1
- IAJILQKETJEXLJ-UHFFFAOYSA-N Galacturonsaeure Natural products O=CC(O)C(O)C(O)C(O)C(O)=O IAJILQKETJEXLJ-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- WQZGKKKJIJFFOK-UHFFFAOYSA-N alpha-D-glucopyranose Natural products OCC1OC(O)C(O)C(O)C1O WQZGKKKJIJFFOK-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-DVKNGEFBSA-N alpha-D-glucose Chemical group OC[C@H]1O[C@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-DVKNGEFBSA-N 0.000 description 1
- AEMOLEFTQBMNLQ-WAXACMCWSA-N alpha-D-glucuronic acid Chemical compound O[C@H]1O[C@H](C(O)=O)[C@@H](O)[C@H](O)[C@H]1O AEMOLEFTQBMNLQ-WAXACMCWSA-N 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000008120 corn starch Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000010447 natron Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000007342 radical addition reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000000375 suspending agent Substances 0.000 description 1
- 229920006352 transparent thermoplastic Polymers 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Classifications
-
- 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
- C09J181/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Adhesives based on polysulfones; Adhesives based on derivatives of such polymers
- C09J181/06—Polysulfones; Polyethersulfones
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
- C08K2003/3081—Aluminum sulfate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides an environment-friendly adhesive and a preparation method thereof, and relates to the technical field of adhesives. An environment-friendly adhesive comprises the following raw materials: polystyrene, bentonite, dimethyl sulfoxide, cellulose, sodium methylene dinaphthalene sulfonate and sodium silicate. The preparation method comprises the following steps: mixing polystyrene and dimethyl sulfoxide, adding a catalyst, and reacting at 80-90 ℃ for 15-20h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying. The environment-friendly adhesive disclosed by the invention is high in viscosity, good in forming effect, good in stability, not easy to decompose, safe and environment-friendly, and convenient for recycling of wastes, and does not damage the environment, and has better economic benefits.
Description
Technical Field
The invention relates to the technical field of adhesives, and particularly relates to an environment-friendly adhesive and a preparation method thereof.
Background
The adhesive is divided into three main categories of organic adhesive, inorganic adhesive and organic-inorganic composite adhesive. The organic adhesive comprises starch, sodium humate, papermaking waste liquid and the like, has good bonding cold strength at normal temperature, but is gradually decomposed when the temperature is raised to 400 ℃, so that the bonding capacity is reduced. The inorganic adhesive is mostly clay, lime and bentonite, which solves the defect that the organic adhesive loses bonding after pyrolysis, but the impurity content of the product is increased, and the energy consumption, the slag forming amount and the like are increased along with the increase. However, the three types of adhesives have low viscosity and poor molding effect.
Disclosure of Invention
The invention aims to provide an environment-friendly adhesive which is high in viscosity, good in forming effect, good in stability, not easy to decompose, safe and environment-friendly and cannot damage the environment.
The invention also aims to provide a preparation method of the environment-friendly adhesive, which has the advantages that through the treatment of different raw materials, the combination degree of the raw materials is better, the adsorption or bonding capacity of each raw material can be improved, the viscosity of the adhesive is higher, the adhesive is more beneficial to bonding wastes, the recycling of the wastes is facilitated, and the economic benefit is better.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides an environment-friendly adhesive which comprises the following raw materials in parts by weight: 40-60 parts of polystyrene, 30-50 parts of bentonite, 1-10 parts of dimethyl sulfoxide, 5-15 parts of cellulose, 10-20 parts of sodium methylene dinaphthalene sulfonate and 5-18 parts of sodium silicate.
The invention provides a preparation method of an environment-friendly adhesive, which comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding a catalyst, and reacting at 80-90 ℃ for 15-20h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
The embodiment of the invention at least has the following beneficial effects:
according to the invention, polystyrene and dimethyl sulfoxide react to form polysulfone resin with a strong adsorption effect, sodium silicate and cellulose form a reticular glue solution with strong adhesive capacity under the action of sodium methylene diphenyl sulfonate, then the polysulfone resin is wrapped by bentonite to form a first outer membrane, and the bentonite can be better combined with the polysulfone resin through ion exchange adsorption or chemical adsorption, so that the adhesion effect can be further enhanced; then mixing with glue solution, adhering the glue solution on the surface of the first outer membrane to form a second outer membrane, slowly permeating the glue solution into the pores of the bentonite, further enhancing the adsorption and adhesion effects of the bentonite, and then performing extrusion forming and drying to obtain the adhesive with the double-layer outer membrane. The double-layer outer membranes have adsorption and adhesion functions and can be mutually cooperated and act together, so that the adhesive can be better combined with other substances, and the recycling of substances such as coal dust, mineral powder and the like is facilitated. And each raw material has reasonable proportion, when the adhesive is matched for use, the binding capacity of the adhesive is better, and the adsorption capacity and the bonding capacity of the adhesive are mutually cooperated, so that the adhesive has high viscosity, is not easy to decompose after molding and has good stability.
In the invention, polystyrene and dimethyl sulfoxide are mixed, then catalyst is added, and reaction is carried out for 15-20h at 80-90 ℃ to obtain prepolymer. The prepolymer is polysulfone resin, the catalyst can accelerate the speed of forming the polysulfone resin, and the operation of preparing the polysulfone resin by the polystyrene and the dimethyl sulfoxide is more convenient, the preparation is more convenient, and the production speed of the environment-friendly adhesive is more favorably improved. Meanwhile, the prepared polysulfone resin has stronger surface activity, is easier to combine with bentonite, and is beneficial to improving the viscosity of the adhesive. Mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution. At the temperature, the sodium methylenediphenyl sulfonate can enhance the diffusion speed of the sodium silicate and the cellulose, can also play a role of an active agent, and promotes the reaction of the sodium silicate and the cellulose, so that the sodium silicate and the cellulose form a reticular glue solution with strong adhesive capacity. And (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying. Thus, the environment-friendly adhesive with the double-layer film can be formed, so that the adhesive is high in stability and not easy to decompose. Meanwhile, the viscosity of the adhesive can be improved through synergistic interaction, the forming is more convenient, and the forming effect is good.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to specific examples.
The embodiment provides an environment-friendly adhesive which comprises the following raw materials in parts by weight: 40-60 parts of polystyrene, 30-50 parts of bentonite, 1-10 parts of dimethyl sulfoxide, 5-15 parts of cellulose, 10-20 parts of sodium methylene dinaphthalene sulfonate and 5-18 parts of sodium silicate.
Polystyrene (abbreviated as PS) refers to a polymer synthesized by free radical addition polymerization of styrene monomer, and has a chemical formula of (C)8H8) n is the same as the formula (I). It is a colorless, transparent thermoplastic having a glass transition temperature of greater than 100 ℃. Polystyrene generally has a head-tail structure, a main chain is a saturated carbon chain, and a side group is a conjugated benzene ring, so that the molecular structure is irregular, the rigidity of molecules is increased, and the PS becomes an amorphous linear polymer. Because of the existence of benzene rings, PS has higher Tg (80-105 ℃), so that PS is transparent and hard at room temperature and is easy to cause stress cracking due to the rigidity of molecular chains.
The bentonite is a non-metal mineral product with montmorillonite as a main mineral component, and the montmorillonite structure is 2: the crystal structure of the type 1 has better ion exchange performance because certain cations, such as Cu, Mg, Na, K and the like, exist in a layered structure formed by montmorillonite unit cells, and the cations have unstable effects with the montmorillonite unit cells and are easy to exchange with other cations. Bentonite has physical adsorption, chemical adsorption and ion exchange adsorption, and the physical adsorption is generated by intermolecular attraction between an adsorbent and an adsorbate, namely van der waals force which is commonly called. Physical adsorption is a reversible adsorption process, and the adsorption speed and the desorption speed are in dynamic balance under certain conditions. The main reason for the physical adsorption is the surface energy of the bentonite surface molecules. Chemisorption is generated by the chemical bonding forces between the adsorbent and the adsorbate, and chemisorption is generally irreversible. Bentonite mineral crystals are generally negatively charged and therefore adsorb an equivalent amount of oppositely charged cations on the surface of the bentonite particles. The adsorbed cations can exchange with cations in solution, which is known as ion exchange adsorption. The ion exchange adsorption is characterized in that: exchanging the same number of ions and exchanging the isoelectric values. The reaction of ion exchange adsorption is reversible, and the rates of adsorption and desorption are affected by the ion concentration.
Dimethyl sulfoxide (DMSO) is a sulfur-containing organic compound with molecular formula of C2H6OS, a colorless, odorless, transparent liquid at room temperature, is a hygroscopic combustible liquid. Has the characteristics of high polarity, high boiling point, good thermal stability, non-proton and water miscibility, and can be dissolved in most organic substances such as ethanol, propanol, benzene, chloroform and the like. Dimethyl sulfoxide and polystyrene generate the adsorption resin-polysulfone resin containing sulfone groups under the action of a catalyst.
Cellulose (cellulose) is a macromolecular polysaccharide consisting of glucose. Is insoluble in water and common organic solvent, and is the main component of plant cell wall. Cellulose is a polysaccharide which is widely distributed and has the largest content in the nature, and accounts for more than 50 percent of the carbon content in the plant.
Sodium methylene dinaphthalene sulfonate is an anionic surfactant and can also be used as a dispersing agent.
Sodium silicate, commonly known as natron, is an inorganic substance with a chemical formula of Na2O·nSiO2The water solution is commonly called water glass, is an ore binder and is also a soluble inorganic silicate which is mainly used as a binder. The larger the modulus of the sodium silicate is, the more difficult the solid sodium silicate is to dissolve in water, n is 1, the solid sodium silicate can be dissolved by warm water at normal time, when n is increased, the solid sodium silicate can be dissolved by hot water, and when n is more than 3, the solid sodium silicate can be dissolved by steam with the pressure of more than 4 atmospheres. The higher the modulus of the sodium silicate is, the higher the Si content is, the viscosity of the sodium silicate is increased, the sodium silicate is easy to decompose and harden, the binding power is increased, and the polymerization degrees of the sodium silicate with different modulus are different, so that the silicic acid components which have important influence on production and application in the hydrolysate are also greatly different.
Polystyrene and dimethyl sulfoxide react to form polysulfone resin with a strong adsorption effect, sodium silicate and cellulose form a reticular glue solution with strong adhesive capacity under the action of methylene diphenyl sodium sulfonate, then the polysulfone resin is wrapped by bentonite to form a first outer membrane, and the bentonite can be better combined with the polysulfone resin through ion exchange adsorption or chemical adsorption, so that the adhesion effect can be further enhanced; then mixing with glue solution, adhering the glue solution on the surface of the first outer membrane to form a second outer membrane, slowly permeating the glue solution into the pores of the bentonite, further enhancing the adsorption and adhesion effects of the bentonite, and then performing extrusion forming and drying to obtain the adhesive with the double-layer outer membrane. The double-layer outer membranes have adsorption and adhesion functions and can be mutually cooperated and act together, so that the adhesive can be better combined with other substances, and the recycling of substances such as coal dust, mineral powder and the like is facilitated. And each raw material has reasonable proportion, when the adhesive is matched for use, the binding capacity of the adhesive is better, and the adsorption capacity and the bonding capacity of the adhesive are mutually cooperated, so that the adhesive has high viscosity, is not easy to decompose after molding and has good stability.
In this embodiment, the environment-friendly adhesive further includes, by weight, 0.1 to 2 parts of vinyl acetate resin and 1 to 6 parts of xanthan gum.
Vinyl acetate resin is a high molecular polymer. The ethyl acetate resin emulsion has adhesiveness, miscibility and flexibility.
Xanthan gum, also known as xanthan gum, is a broad-spectrum microbial extracellular polysaccharide produced by fermentation engineering of Xanthomonas campestris (Xanthomonas campestris) with carbohydrate as a main raw material (such as corn starch), and is a polysaccharide macromolecular compound consisting of D-glucose, D-mannose and D-glucuronic acid in a ratio of 2:2:1, and the relative molecular mass is more than 100 ten thousand. The secondary structure of xanthan gum is that the side chain winds around the main chain skeleton reversely, and a rodlike double-spiral structure is formed through a hydrogen bond system. It has unique rheological property, good water solubility, good stability to heat and acid and alkali, and good compatibility with various salts, and can be used as thickener, suspending agent, emulsifier, and stabilizer. The xanthan gum solution has the characteristics of low concentration and high viscosity (the viscosity of 1% aqueous solution is equivalent to 100 times of that of gelatin), and is an efficient thickening agent. The viscosity of xanthan gum solution can not change greatly with the change of temperature, the viscosity of general polysaccharide can change due to heating, but the viscosity of xanthan gum aqueous solution has almost no change between 10 ℃ and 80 ℃, and even the low-concentration aqueous solution still shows stable high viscosity in a wide temperature range.
The vinyl acetate resin, the polysulfone resin and the xanthan gum can generate a crosslinking effect to form a composite high molecular substance with larger molecular weight and higher structural strength, and the adsorption and bonding capability of the polysulfone resin can be further enhanced, so that the bonding capability of the environment-friendly adhesive is improved. The xanthan gum can also improve the stability of the polysulfone resin, so that the stability of the environment-friendly adhesive is improved, the storage of the adhesive is more convenient, the adhesive is also convenient to use in different environments, the influence of environmental factors on the adhesive is reduced, and the performance of the adhesive is more stable.
In this embodiment, the environment-friendly adhesive further includes, by weight, 0.01 to 0.5 part of silicone and 0.5 to 2.5 parts of methoxysilane.
Silicone, which refers to silicone oil, generally refers to linear polysiloxane products that remain liquid at room temperature. Generally, the silicone oil is classified into methyl silicone oil and modified silicone oil. The most commonly used silicone oil-methyl silicone oil is also called common silicone oil, all organic groups of the silicone oil-methyl silicone oil are methyl, and the methyl silicone oil has good chemical stability, insulating property and hydrophobic property. It is prepared through hydrolysis of dimethyldichlorosilane in water to obtain initial condensed ring body, cracking and rectifying to obtain low ring body, mixing the ring body, sealing agent and catalyst together to obtain various mixture with different polymerization degree, and vacuum distillation to eliminate low-boiling point matter to obtain silicone oil. It can be used as a lubricant, a moisture barrier, a hydraulic fluid, and the like.
Methoxysilanes are mainly used as coupling agents.
When the silicone and the methoxysilane are matched with the raw materials, the strength of crosslinking or polymerization reaction of each component in the raw materials can be improved, the content of formed high molecular substances is higher, and the bonding strength is higher. Therefore, the viscosity of the adhesive can be enhanced, the molding of the mineral powder or the coal dust is facilitated, the slag or the coal slag is collected more conveniently, and the recycling degree of the slag or the coal slag is improved. In addition, the environment-friendly adhesive can also be used for recycling other wastes.
In this embodiment, the environment-friendly adhesive further includes 1 to 5 parts by weight of aluminum sulfate.
Aluminum sulfate is an inorganic substance with a chemical formula of Al2(SO4)3The molecular weight is 342.15, and the powder is white crystalline powder, and can make fine particles and natural colloidal particles in water agglomerate into large floccule after being dissolved in water. The urea formaldehyde adhesive is used as an effective cross-linking agent of the animal glue, can improve the viscosity of the animal glue, is also used as a curing agent of the urea formaldehyde adhesive, and has higher curing speed of 20 percent aqueous solution. The aluminum sulfate can further promote the crosslinking of the cellulose and the sodium silicate, so that the adhesive degree of the glue solution is stronger.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding a catalyst, and reacting at 80-90 ℃ for 15-20h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Mixing polystyrene and dimethyl sulfoxide, adding a catalyst, and reacting at 80-90 ℃ for 15-20h to obtain a prepolymer. The prepolymer is polysulfone resin, the catalyst can accelerate the speed of forming the polysulfone resin, and the operation of preparing the polysulfone resin by the polystyrene and the dimethyl sulfoxide is more convenient, the preparation is more convenient, and the production speed of the environment-friendly adhesive is more favorably improved. Meanwhile, the prepared polysulfone resin has stronger surface activity, is easier to combine with bentonite, and is beneficial to improving the viscosity of the adhesive. Mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution. At the temperature, the sodium methylenediphenyl sulfonate can enhance the diffusion speed of the sodium silicate and the cellulose, can also play a role of an active agent, and promotes the reaction of the sodium silicate and the cellulose, so that the sodium silicate and the cellulose form a reticular glue solution with strong adhesive capacity. And (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying. Thus, the environment-friendly adhesive with the double-layer film can be formed, so that the adhesive is high in stability and not easy to decompose. Meanwhile, the viscosity of the adhesive can be improved through synergistic interaction, the forming is more convenient, and the forming effect is good.
The catalyst is one of aluminum trichloride, ferric trichloride and titanium dioxide. The catalyst has better catalytic effect on polystyrene and dimethyl sulfoxide, and does not influence the generation of polysulfone resin.
Before the cellulose is used, the method also comprises the steps of mixing the cellulose and starch, adding a formaldehyde solution, adjusting the pH to 5-6, reacting at 90-100 ℃ for 30-50min, and then mixing with sodium silicate.
Starch (amylum) is a high molecular carbohydrate, a polysaccharide formed by the polymerization of glucose molecules. The basic constitutional unit is alpha-D-glucopyranose with the molecular formula of (C)6H10O5) n is the same as the formula (I). Starch can adsorb many organic and inorganic compounds, and amylose and amylopectin have different adsorption properties due to different molecular morphologies. Amylose molecules have good molecular extensibility in solution, and are easy to be mutually associated with some polar organic compounds such as n-butyl alcohol, fatty acid and the like through hydrogen bonds to form a crystalline complex for precipitation.
The cellulose and starch are promoted by the formaldehyde solution to have graft copolymerization reaction so as to form modified cellulose with a more stable structure, and the formed modified cellulose has more pores, larger molecular weight, better adsorption effect, higher structural strength, better physical and chemical properties and more stability. Under the acidic condition, the formaldehyde solution has better modification effect on cellulose and starch.
The mass ratio of the cellulose to the starch to the formaldehyde solution is 1: 1: (0.1-0.5). Several of the modified celluloses have more stable properties and more pores in the proportion, and are more convenient to polymerize with the sodium silicate.
When vibrating and mixing, the vibration frequency is 50-60KHz, and the vibration time is 20-40 min. Therefore, the bentonite can be stably combined on the surface of the polysulfone resin to form a first outer membrane with better stability, so that the adhesive is not easy to decompose.
When drying, drying at 120-150 deg.C for 5-15min, cooling at 1-5 deg.C for 10-20min, and drying at 70-80 deg.C for 40-50 min. The glue solution can better infiltrate and infiltrate into the surface of the adhesive through the alternation of cold and heat so as to form a more stable second outer film. Through the cooperation of the first outer membrane and the second outer membrane, the adhesive has more stable property and better molding effect.
The use method of the environment-friendly adhesive prepared by the embodiment of the invention comprises the following steps: mixing the environment-friendly adhesive with the dry powder of the materials, stirring uniformly, adding a proper amount of water, stirring for 3-5min, and molding after the materials are sticky.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
An environment-friendly adhesive comprises the following raw materials: 40g of polystyrene, 30g of bentonite, 1g of dimethyl sulfoxide, 5g of cellulose, 10g of sodium methylene dinaphthalene sulfonate and 5g of sodium silicate.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding aluminum trichloride, and reacting at 80 ℃ for 15 hours to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at 100 ℃ for 1h to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Example 2
An environment-friendly adhesive comprises the following raw materials: 60g of polystyrene, 50g of bentonite, 10g of dimethyl sulfoxide, 15g of cellulose, 20g of sodium methylene dinaphthalene sulfonate and 18g of sodium silicate.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding ferric trichloride, and reacting at 90 ℃ for 20 hours to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at 120 ℃ for 2 hours to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Example 3
An environment-friendly adhesive comprises the following raw materials: 50g of polystyrene, 40g of bentonite, 5g of dimethyl sulfoxide, 10g of cellulose, 15g of sodium methylene dinaphthalene sulfonate, 10g of sodium silicate, 0.5g of vinyl acetate resin and 2g of xanthan gum.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding titanium dioxide, and reacting at 85 ℃ for 18h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, vinyl acetate resin and xanthan gum, and reacting at 115 ℃ for 2 hours to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Example 4
An environment-friendly adhesive comprises the following raw materials: 45g of polystyrene, 45g of bentonite, 3g of dimethyl sulfoxide, 8g of cellulose, 12g of sodium methylene dinaphthalene sulfonate, 15g of sodium silicate, 1g of vinyl acetate resin, 4g of xanthan gum, 0.2g of silicone and 1g of methoxysilane.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding aluminum trioxide, silicone and methoxysilane, and reacting at 82 ℃ for 16h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, vinyl acetate resin and xanthan gum, and reacting at 115 ℃ for 1.5 hours to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Example 5
An environment-friendly adhesive comprises the following raw materials: 55g of polystyrene, 42g of bentonite, 8g of dimethyl sulfoxide, 8g of cellulose, 16g of sodium methylene dinaphthalene sulfonate, 9g of sodium silicate, 1.2g of vinyl acetate resin, 3g of xanthan gum, 0.2g of silicone, 0.8g of methoxysilane and 2g of aluminum sulfate.
A preparation method of an environment-friendly adhesive comprises the following steps:
mixing polystyrene and dimethyl sulfoxide, adding aluminum trioxide, silicone and methoxysilane, and reacting at 82 ℃ for 16h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, vinyl acetate resin and xanthan gum, and reacting at 115 ℃ for 1.5 hours to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding aluminum sulfate, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
Example 6
This example is the same as the starting material of example 5, except that the preparation process included:
cellulose pretreatment: mixing cellulose and starch, adding formaldehyde solution, adjusting pH to 5.8, and reacting at 95 deg.C for 40min to obtain modified cellulose.
Mixing polystyrene and dimethyl sulfoxide, adding aluminum trioxide, silicone and methoxysilane, and reacting at 82 ℃ for 16h to obtain a prepolymer; mixing sodium silicate and modified cellulose, adding sodium methylene dinaphthalene sulfonate, vinyl acetate resin and xanthan gum, and reacting at 115 ℃ for 1.5 hours to obtain a glue solution; mixing the prepolymer and bentonite under vibration at 55KHz for 30min, adding aluminum sulfate, adding the glue solution, stirring, mixing, extruding, drying at 130 deg.C for 10min, cooling at 2 deg.C for 15min, and drying at 75 deg.C for 45 min.
Example 7
This example is the same as example 1, except that the preparation method comprises:
cellulose pretreatment: mixing cellulose and starch, adding formaldehyde solution, adjusting pH to 5.5, and reacting at 98 deg.C for 40min to obtain modified cellulose.
Mixing polystyrene and dimethyl sulfoxide, adding aluminum trichloride, and reacting at 80 ℃ for 15 hours to obtain a prepolymer; mixing sodium silicate and modified cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at 100 ℃ for 1h to obtain a glue solution; mixing the prepolymer and bentonite under vibration at frequency of 58KHz for 25min, adding the glue solution, stirring, extruding, drying at 140 deg.C for 8min, cooling at 1 deg.C for 10min, and drying at 78 deg.C for 42 min.
Test results
The environment-friendly adhesive obtained in the embodiment 1 of the invention is mixed with the pulverized coal dry powder uniformly, and then a proper amount of water is added for stirring for 3-5min, and the mixture can be molded after the material has viscosity. When drying and forming are adopted, the addition amount of the environment-friendly adhesive is 2-3%; when natural air drying molding is adopted, the addition amount of the environment-friendly adhesive is 5-6%. The technical indexes are as follows:
TABLE 1 technical indices
As can be seen from Table 1, the environmentally friendly adhesive of the embodiment of the present invention has good viscosity and cold strength.
The environmental-friendly adhesive prepared in the embodiments 1 to 7 of the invention has the following performance parameters:
table 2 performance parameters of the environmentally friendly adhesives of examples 1-7
| Examples | Viscosity (Mpa s) | Moisture (%) | Appearance of the product |
| 1 | 2730 | 8 | Grey powder |
| 2 | 2745 | 7 | Grey powder |
| 3 | 2860 | 6 | White powder |
| 4 | 2876 | 5 | White powder |
| 5 | 2901 | 4 | White powder |
| 6 | 2963 | 3 | White powder |
| 7 | 2890 | 6 | Pale yellow powder |
As can be seen from Table 2, the environmentally friendly adhesives of examples 1-7 of the present invention all had better viscosities, and the viscosity of example 6 was the best. Therefore, when raw materials or preparation steps are added, the viscosity of the environment-friendly adhesive can be further improved, so that the environment-friendly adhesive can be better bonded and molded with coal powder or other waste dry powder, and waste recycling is facilitated.
In summary, in the environment-friendly adhesive of the embodiment of the present invention, polystyrene reacts with dimethyl sulfoxide to form polysulfone resin with a strong adsorption effect, sodium silicate and cellulose form a mesh-like glue solution with a strong adhesive ability under the action of methylene diphenyl sodium sulfonate, then bentonite is used to wrap the polysulfone resin to form a first outer membrane, and the bentonite can be better combined with the polysulfone resin through ion exchange adsorption or chemical adsorption, so as to further enhance the adhesion effect; then mixing with glue solution, adhering the glue solution on the surface of the first outer membrane to form a second outer membrane, slowly permeating the glue solution into the pores of the bentonite, further enhancing the adsorption and adhesion effects of the bentonite, and then performing extrusion forming and drying to obtain the adhesive with the double-layer outer membrane. The double-layer outer membranes have adsorption and adhesion functions and can be mutually cooperated and act together, so that the adhesive can be better combined with other substances, and the recycling of substances such as coal dust, mineral powder and the like is facilitated. And each raw material has reasonable proportion, when matched for use, the combination capacity of the raw materials is better, and the adsorption capacity and the bonding capacity of the raw materials are mutually cooperated, so that the adhesive has high viscosity, is not easy to decompose after molding and has good stability.
According to the preparation method of the environment-friendly adhesive disclosed by the embodiment of the invention, different raw materials are treated, so that the combination degree of the raw materials is better, the adsorption or bonding capacity of each raw material can be improved, the viscosity of the adhesive is higher, the adhesive is more beneficial to bonding wastes, the wastes are convenient to recycle, and the economic benefit is better.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (10)
1. The environment-friendly adhesive is characterized by comprising the following raw materials in parts by weight: 40-60 parts of polystyrene, 30-50 parts of bentonite, 1-10 parts of dimethyl sulfoxide, 5-15 parts of cellulose, 10-20 parts of sodium methylene dinaphthalene sulfonate and 5-18 parts of sodium silicate.
2. The environment-friendly adhesive according to claim 1, further comprising 0.1 to 2 parts by weight of a vinyl acetate resin and 1 to 6 parts by weight of xanthan gum.
3. The environment-friendly adhesive according to claim 2, further comprising 0.01 to 0.5 parts by weight of silicone and 0.5 to 2.5 parts by weight of methoxysilane.
4. The environmentally friendly adhesive according to claim 3, further comprising 1-5 parts by weight of aluminum sulfate.
5. A method for preparing the environmentally friendly adhesive according to any one of claims 1 to 4, comprising the steps of:
mixing polystyrene and dimethyl sulfoxide, adding a catalyst, and reacting at 80-90 ℃ for 15-20h to obtain a prepolymer; mixing sodium silicate and cellulose, adding sodium methylene dinaphthalene sulfonate, and reacting at the temperature of 100-120 ℃ for 1-2h to obtain a glue solution; and (3) vibrating and mixing the prepolymer and bentonite, adding the glue solution, stirring and mixing, carrying out extrusion forming, and drying.
6. The method of claim 5, wherein the catalyst is one of aluminum trichloride, iron trichloride, and titanium dioxide.
7. The method according to claim 5, wherein the cellulose is used by mixing the cellulose with starch, adding formaldehyde solution, adjusting pH to 5-6, reacting at 90-100 ℃ for 30-50min, and mixing with sodium silicate.
8. The method according to claim 7, wherein the mass ratio of the cellulose to the starch to the formaldehyde solution is 1: 1: (0.1-0.5).
9. The preparation method according to claim 5, wherein the vibration frequency is 50-60KHz and the vibration time is 20-40min during the vibration mixing.
10. The method as claimed in claim 5, wherein the drying step comprises drying at 150 ℃ for 5-15min at 120 ℃, cooling at 1-5 ℃ for 10-20min, and drying at 70-80 ℃ for 40-50 min.
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