CN101831167B - Method for preparing polyurethane-based stone paper - Google Patents
Method for preparing polyurethane-based stone paper Download PDFInfo
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- CN101831167B CN101831167B CN2010101860774A CN201010186077A CN101831167B CN 101831167 B CN101831167 B CN 101831167B CN 2010101860774 A CN2010101860774 A CN 2010101860774A CN 201010186077 A CN201010186077 A CN 201010186077A CN 101831167 B CN101831167 B CN 101831167B
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Abstract
The invention relates to a method for preparing polyurethane-based stone paper. The method comprises the following main steps of: (1) reacting components comprising diisocyanate, polyester (polyether) divalent alcohol, catalyst, cross linker and solvent for 2 hours in a reactor at the temperature of 80 DEG C, then adding chain extender and diisocyanate into the reaction product, and continuously reacting the mixture for 2 hours at the temperature of 80 DEG C to finally obtain viscous polyurethane solution; (2) cooling the polyurethane solution to between 40 and 45 DEG C, adding inorganic filler and pigment into the polyurethane solution, stirring the solution for 1 hour, mixing the solution uniformly, then pouring the solution into water to perform sedimentation, washing the sediment with water to remove the solvent, and dehydrating, drying and granulating the sediment at the normal temperature to obtain polyurethane granules; and (3) making a film by using the polyurethane granules by a blow molding method, a calendaring method or a casting method so as to obtain a polyurethane-based stone paper product. The product obtained by the method has the advantages of water, moisture, oil and moth prevention, tearing, folding and abrasion resistance, fire resistance, simple equipment and environmental friendliness.
Description
Technical field
The invention belongs to the composite organic-inorganic material production technical field, be specifically related to a kind of preparation method of polyurethane-based stone paper.
Background technology
The stone paper production technology, be to be main raw material with Mineral resources lime carbonate the abundantest in the earth's crust, at present, this technology mainly is with macromolecular material---polypropylene, polyethylene and multiple inorganics are auxiliary material, utilize the macromolecule interfacial principles of chemistry and filling-modified technology, a kind of novel papermaking technology that processes through special process.
Stone paper is defined as film at plastic industry, because its base mateiral is plastics and mineral substance.Title in paper-making industry is called synthetic paper, is a kind of converted paper.The development of stone paper has comprised security, physical property and other characteristics on paper property, and principal feature is not only waterproof, protection against the tide, mildew-resistant, insect protected etc. of stone paper, and on the physical property in anti-ly tear, all superior in wear-resisting, the folding, flame retardant resistance than traditional paper.In addition, because a large amount of pearl fillers is in micron-scale, make stone paper blotting jail, ink-jet is printd and can not lost by water logging, even immerse a couple of days in the water, ink marks can not scatter yet.
The stone paper product applications is extremely extensive, can be applicable to disposable life and consume articles for use, cultural paper, building materials and ornaments material, industrial packaging material, special with aspects such as paper, and along with the continuous maturation and the upgrading of stone papermaking technology, Application Areas will be bigger also.
Stone paper need not water in whole process of production, does not need to add strong acid, highly basic, chlorinated lime and numerous organic chloride, has fundamentally stopped in the paper-making process because of producing the pollution problem that waste gas, waste water and other bazardous wastes cause.Simultaneously, stone paper is to dissolve in a spot of nontoxicity resin fully with a large amount of inorganic mineral powders, and very environmental protection of production process can be degraded after the use voluntarily.
The birth of this technology both can solve the harm that traditional paper-making pollution brings to environment, can solve the white pollution problems that the use of a large amount of plastic packing articles causes again, and, also can save a large amount of timber resources, be significant for the protection environment.The advantage of self has been given prominence in the production of stone paper especially in energy-saving and emission-reduction, meet the general requirement of the low charcoal of society, Sustainable development.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of polyurethane-based stone paper different from the past.
This method comprises the step of following order:
(1) component that will comprise 20～30 weight part vulcabond, 170～1300 weight part polyester (ether) dibasic alcohol, 0.2～1.3 weight part catalyzer, 0.6～7 weight part linking agent, 200～1300 parts by weight solvent was reacted 2 hours down for 80 ℃ in temperature in reactor, and then add 11～80 weight part chainextenders, 18～135 weight part vulcabond in 80 ℃ of following continuation reactions of temperature 2 hours, obtain the heavy-gravity polyurethane solution at last;
(2) then prepared polyurethane solution is cooled to 40～45 ℃, add the mineral filler of 210～3000 weight parts and the pigment of 25～660 weight parts again, stirred 1 hour, mix, precipitating is come out in the impouring water then, remove solvent through water washing, dehydration at normal temperatures, dry, granulation obtain the urethane pellet;
(3) the urethane pellet with (2) step gained adopts blow moulding or rolling process or casting method system film, the thickness of controlling diaphragm is 0.05mm～0.25mm, after treating film cooling, membrane product is cut out be promptly to obtain the polyurethane-based stone paper product by suitable dimension according to demand.
Described vulcabond is preferably: at least a in hexamethylene diisocyanate, dicyclohexyl methane diisocyanate, isoflurane chalcone diisocyanate and the trimethyl hexamethylene diisocyanate.
Described polyethers or polyester diol are preferably: at least a in PTMG, polycaprolactone glycol, polyethylene glycol adipate glycol, the polyneopentyl glycol adipate glycol, its number average relative molecular mass is 4000～20000.
Described catalyzer is at least a in stannous octoate or the dibutyl tin laurate.
Described linking agent is at least a or mixture in trihydroxy-propane, Viscotrol C, diethanolamine, the trolamine.
Described solvent is at least a or mixture in dimethyl formamide, N,N-DIMETHYLACETAMIDE, dimethyl sulfoxide (DMSO) or the N-Methyl pyrrolidone.
Described chainextender is preferably short-chain fat family dibasic alcohol, as 1, and 4 '-butyleneglycol, 1,6-hexylene glycol, ethylene glycol, 1, at least a in 3 '-propylene glycol and the glycol ether.
Described mineral filler is at least a or mixture in light calcium carbonate, water-ground limestone, calcene, the kaolin, and is that fineness is 1500～2500 purpose ultrafine powder.
Described pigment is at least a or mixture of titanium white, zinc white, lithopone.
In described step (2) the gained urethane pellet, ratio between urethane and the mineral filler can change in certain scope, be preferably: the preferred mass percentage composition of urethane is 30%～45%, and the quality percentage composition of mineral filler and pigment is 55%～70%.
The polyurethane-based stone paper outward appearance of the preferred gained of the present invention is a white, and thickness is between 0.05～0.25mm, and weight (with A4 paper planimeter) is between 0.90～1.55g.
The present invention compares with existing stone paper production technology, has following advantage:
(1) excellent performance: polyurethane-based stone paper product of the present invention is a kind of novel polymer/inorganic composite materials, and it has numerous excellent properties of polyurethane material, as characteristics such as wear-resisting, low temperature resistant, tear-resistant, elongation height.
(2) paper pliability flexible and controllable: the kind of the present invention by changing the polyester and polyether dibasic alcohol in the synthesis of polyurethane, molecular weight and can prepare stone paper product with different hardness, hand feel characteristic with the ratio of isocyanic ester, linking agent, chainextender.
(3) product prepares easily: the synthesis procedure of urethane of the present invention adopts common synthesis device and operational condition, and the production of polyurethane-based stone paper only need be adopted common film-forming method, i.e. blow moulding or rolling process or casting method.Simultaneously, urethane can provide certain tackiness, so need not to add other tackiness agent in the production of product.
(4) store easily: use the solvent borne polyurethane material, product need not protection against the tide, other special measure such as antifog.
(5) have environment friendly: synthetic biodegradable polyester/polyethers dibasic alcohol that adopt of urethane, the products obtained therefrom use is embedded in later underground, can degrade voluntarily in two years under the natural condition, and degradation speed is fast than polypropylene, polyethylene more.
Embodiment
The present invention is described in further detail below by specific embodiment, wherein, described raw material is industrialization product, and equipment is the common polyurethane production equipment and the production unit of system film, described raw material umber is parts by weight except that specifying.
Embodiment 1:
4.7 kilograms of isoflurane chalcone diisocyanates, 40 kilograms of PTMG (the number average relative molecular mass is 4000), 0.05 kilogram of stannous octoate, 0.15 kilogram of trolamine, dimethyl formamide are added 500L for 50 kilograms and have in the reactor of agitator, thermometer and reflux exchanger, reacted 2 hours down for 80 ℃ in temperature.Add 1 then, 1.8 kilograms of 4 '-butyleneglycols, 4.4 kilograms of isoflurane chalcone diisocyanates, 80 ℃ of temperature controls, after 2 hours, be cooled to 40～45 ℃ in 80 ℃ of reactions of temperature, add 50 kilograms of water-ground limestones, 12 kilograms of zinc white pigment, stirred 1 hour, precipitating is come out in the impouring water then, removes solvent through water washing, dehydration at normal temperatures, dry, granulation.Above-mentioned pellet is carried out the blowing film forming by the blown film method, and its sample thickness is controlled to be 0.25mm; After treating the film cooling, utilize cutting device to cut out and to obtain the stone paper product.
Through Theoretical Calculation, urethane quality percentage composition was 45.1% during the gained stone paper was produced in the present embodiment; The quality percentage composition of mineral filler and pigment is 54.9%.The stone paper product colour is a white, and thickness is 0.25mm, and quality (with A4 paper planimeter) is 1.53g.
Embodiment 2:
5.4 kilograms of dicyclohexyl methane diisocyanates, 80 kilograms of polyethylene glycol adipate glycol (the number average relative molecular mass is 8000), 0.05 kilogram of dibutyl tin laurate, 0.2 kilogram of Viscotrol C, N,N-DIMETHYLACETAMIDE are added 500L for 80 kilograms and have in the reactor of agitator, thermometer and reflux exchanger, reacted 2 hours down for 80 ℃ in temperature.Add 1 then, 3.6 kilograms of 3 '-propylene glycol, 7.8 kilograms of dicyclohexyl methane diisocyanates, 80 ℃ of temperature controls, after 2 hours, be cooled to 40～45 ℃ in 80 ℃ of reactions of temperature, add 15 kilograms of light calcium carbonate double centner, titanium white powder pigments, stirred 1 hour, precipitating is come out in the impouring water then, removes solvent through water washing, dehydration at normal temperatures, dry, granulation.With above-mentioned pellet rolling process system film, its sample thickness is controlled to be between the 0.15mm; After treating the film cooling, utilize cutting device to cut out and promptly obtain the stone paper product.
Through Theoretical Calculation, urethane quality percentage composition was 45.7% during the gained stone paper was produced in the present embodiment; The quality percentage composition of mineral filler and pigment is 54.3%.The stone paper product colour is a white, and thickness is 0.15mm, and quality (with A4 paper planimeter) is 1.15g.
Embodiment 3:
With 1,3.8 kilograms of hexamethylene-diisocyanates, 120 kilograms of polycaprolactone glycols (the number average relative molecular mass is 12000), 0.10 kilogram of stannous octoate, 0.5 kilogram in trihydroxy-propane, dimethyl sulfoxide (DMSO) add 500L for 120 kilograms and have in the reactor of agitator, thermometer and reflux exchanger, react 2 hours down for 80 ℃ in temperature.Add 7.7 kilograms of glycol ethers, 1 then, 11.2 kilograms of hexamethylene-diisocyanates, 80 ℃ of temperature controls, react after 2 hours, be cooled to 40～45 ℃, add 170 kilograms of calcenes, 50 kilograms of lithopone pigment, stirred 1 hour, precipitating is come out in the impouring water then, removes solvent through water washing, dehydration at normal temperatures, dry, granulation.By casting method system film, its sample thickness is controlled to be between the 0.09mm with above-mentioned pellet; After treating the film cooling, utilize cutting device to cut out and promptly obtain the stone paper product.
Through Theoretical Calculation, urethane quality percentage composition was 39.4% during the gained stone paper was produced in the present embodiment; The quality percentage composition of mineral filler and pigment is 60.6%.The stone paper product colour is a white, and thickness is 0.09mm, and quality (with A4 paper planimeter) is 1.05g.
Embodiment 4:
2.2 kilograms of trimethyl hexamethylene diisocyanates, polyneopentyl glycol adipate glycol (the number average relative molecular mass is 20000) double centner, 0.1 kilogram of dibutyl tin laurate, 0.5 kilogram of diethanolamine, N-Methyl pyrrolidone are added 500L for 143 kilograms and have in the reactor of agitator, thermometer and reflux exchanger, reacted 2 hours down for 80 ℃ in temperature.Add 1 then, 6.0 kilograms of 6-hexylene glycols, 9.9 kilograms of trimethyl hexamethylene diisocyanates, 80 ℃ of reactions of temperature control are after 2 hours, be cooled to 40～45 ℃, add 225 kilograms of kaolin, 50 kilograms of titanium white powder pigments, stirred 1 hour, precipitating is come out in the impouring water then, remove solvent through water washing, dehydration at normal temperatures, dry, granulation.Above-mentioned pellet is carried out the blowing film forming by blow moulding, and its sample thickness is controlled to be between the 0.05mm; After treating the film cooling, utilize cutting device to cut out and promptly obtain the stone paper product.
Through Theoretical Calculation, urethane quality percentage composition was 30.1% during the gained stone paper was produced in the present embodiment; The quality percentage composition of mineral filler and pigment is 69.9%.The stone paper product colour is a white, and thickness is 0.05mm, and quality (with A4 paper planimeter) is 0.95g.
Claims (3)
1. the preparation method of a polyurethane-based stone paper is characterized in that comprising the steps:
(1) component that will comprise 20～30 weight part vulcabond, 170～1300 weight part polyester diol or polyether Glycols, 0.2～1.3 weight part catalyzer, 0.6～7 weight part linking agent, 200～1300 parts by weight solvent was reacted 2 hours down for 80 ℃ in temperature in reactor, and then add 11～80 weight part chainextenders, 18～135 weight part vulcabond in 80 ℃ of following continuation reactions of temperature 2 hours, obtain the heavy-gravity polyurethane solution at last;
(2) then prepared polyurethane solution is cooled to 40～45 ℃, add the mineral filler of 210～3000 weight parts and the pigment of 25～660 weight parts again, stirred 1 hour, mix, precipitating is come out in the impouring water then, remove solvent through water washing, dehydration at normal temperatures, dry, granulation obtain the urethane pellet;
(3) the urethane pellet with (2) step gained adopts blow moulding or rolling process or casting method system film, the thickness of controlling diaphragm is 0.05mm～0.25mm, after treating film cooling, membrane product is cut out be promptly to obtain the polyurethane-based stone paper product by suitable dimension according to demand.
2. the preparation method of polyurethane-based stone paper according to claim 1 is characterized in that:
Described vulcabond is preferably: at least a in hexamethylene diisocyanate, dicyclohexyl methane diisocyanate, isoflurane chalcone diisocyanate and the trimethyl hexamethylene diisocyanate;
Described polyethers or polyester diol are preferably: at least a in PTMG, polycaprolactone glycol, polyethylene glycol adipate glycol, the polyneopentyl glycol adipate glycol, and its number average relative molecular mass is 4000～20000;
Described catalyzer is at least a in stannous octoate or the dibutyl tin laurate;
Described linking agent is at least a or mixture in trihydroxy-propane, Viscotrol C, diethanolamine, the trolamine;
Described solvent is at least a or mixture in dimethyl formamide, N,N-DIMETHYLACETAMIDE, dimethyl sulfoxide (DMSO) or the N-Methyl pyrrolidone;
Described chainextender is preferably short-chain fat family dibasic alcohol, as 1, and 4 '-butyleneglycol, 1,6-hexylene glycol, ethylene glycol, 1, at least a in 3 '-propylene glycol and the glycol ether;
Described mineral filler is at least a or mixture in light calcium carbonate, water-ground limestone, calcene, the kaolin, and is that fineness is 1500～2500 purpose ultrafine powder;
Described pigment is at least a or mixture of titanium white, zinc white, lithopone.
3. the preparation method of polyurethane-based stone paper according to claim 1 and 2, it is characterized in that: in described step (2) the gained urethane pellet, ratio between urethane and the mineral filler is preferably: the quality percentage composition of urethane is 30%～45%, and the quality percentage composition of mineral filler and pigment is 55%～70%.
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| CN2010101860774A CN101831167B (en) | 2010-05-28 | 2010-05-28 | Method for preparing polyurethane-based stone paper |
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| CN2010101860774A CN101831167B (en) | 2010-05-28 | 2010-05-28 | Method for preparing polyurethane-based stone paper |
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| CN101831167A CN101831167A (en) | 2010-09-15 |
| CN101831167B true CN101831167B (en) | 2011-12-21 |
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