CN102505555B - High-speed polyurethane papermaking rubber covered roller, preparation method thereof and application - Google Patents
High-speed polyurethane papermaking rubber covered roller, preparation method thereof and application Download PDFInfo
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- CN102505555B CN102505555B CN201110355516.4A CN201110355516A CN102505555B CN 102505555 B CN102505555 B CN 102505555B CN 201110355516 A CN201110355516 A CN 201110355516A CN 102505555 B CN102505555 B CN 102505555B
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Abstract
The invention belongs to the field of preparation of polyurethane rubber covered rollers, and discloses a high-speed polyurethane papermaking rubber covered roller, a preparation method thereof and application. The high-speed polyurethane papermaking rubber covered roller consists of a metal roller core and polyurethane adhered on the metal roller core. The preparation method comprises steps of treating the surface of the metal roller core, preparing polyurethane prepolymer, preparing the papermaking rubber covered roller, and the like. The polyurethane and the metal roller core are adhered by resin type adhesive, adhesion strength is high, the polyurethane cannot be separated from the roller core, the rubber covered roller is firm and durable, and the service life of the rubber covered roller is long. The polyurethane is good in dynamic performance, heat is not easy to be generated in the polyurethane, damage of the rubber covered roller due to over high inner temperature can be avoided under high speed and high load, and the shortcoming that a great quantity of heat is generated in existing polyurethane is overcome.
Description
Technical field
The invention belongs to polyurethane rubber roller and manufacture field, be specifically related to a kind of polyurethane papermaking rubber covered roller that is adapted at using under high-speed condition and manufacture method and application.
Background technology
Polyurethane elastomer, owing to having the features such as hardness is high, mechanical property good, elasticity is high, anti-wear performance is good, bearing capacity is large, is widely used in the occasion of the high capacities such as tire, rubber roll.But the conventionally interior heat-dissipating of polyurethane is larger, and under high-speed condition, interior heat-dissipating makes goods internal temperature larger, causes material destroyed.For high speed papermaking rubber roller, be easy to occur the disengaging of polyurethane and metal roller core, and the partial melting of polyurethane material, thereby whole rubber roll lost efficacy.
Summary of the invention
For the shortcoming that overcomes prior art is with not enough, primary and foremost purpose of the present invention is to provide a kind of be adapted at using under high speed high load condition, polyurethane papermaking rubber covered roller that the life-span is long.
Another object of the present invention is to provide the manufacture method of above-mentioned papermaking rubber roller.
A further object of the present invention is to provide the purposes of above-mentioned papermaking rubber roller.
Object of the present invention is achieved through the following technical solutions:
A high-speed polyurethane papermaking rubber covered roller, is formed by playing support and the metal roller core of the power of transmission effect and the polyurethane being directly bonded on metal roller core, and the polyurethane using has the little characteristic of good, the interior heat-dissipating of dynamic property;
Described polyurethane and metal roller core pass through adhesive bonds;
Described adhesive is obtained by following methods preparation:
The resin adhesive that adds 50-60 weight portion in the mixed solvent of 40-50 weight portion, is uniformly mixed and get final product;
Described mixed solvent is grouped into by the one-tenth of following percent by volume:
Isopropyl alcohol: 0-40%
Ethyl acetate: 0-40%
MEK: 0-50%
Trichloro-ethylene: 0-40%.
The preparation method of above-mentioned high-speed polyurethane papermaking rubber covered roller, comprises the following steps:
(1) surface treatment of metal roller core: metallic roll wicking surface is carried out to ramming, oil removing degreasing, clean out rear even spraying or brush adhesive, park 0.5-1 hour at 20-30 ℃, dry, can be used for cast;
The described oven dry of step (1) is to dry 0.5-1 hour at 120 ℃;
(2) prepare base polyurethane prepolymer for use as
A, there is mould pouring technology base polyurethane prepolymer for use as
Get 100 weight portion polytetrahydrofuran diols, be heated to 110-130 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to 60-75 ℃, then add 69.8-112 weight portion isocyanates, be warming up to 78-92 ℃, react 2 hours; Mixture short-path distillation, to remove unreacted isocyanate-monomer, lower than 0.2%, has been obtained to mould pouring technology base polyurethane prepolymer for use as to the percentage composition of mixture middle reaches divorced cyanate ester monomer;
The molecular weight of described polytetrahydrofuran diol is 1000-2000;
Described isocyanates is toluene di-isocyanate(TDI) or PPDI;
B, without mould pouring technology base polyurethane prepolymer for use as
Get 100 weight portion polytetrahydrofuran diols, be heated to 110-130 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to 60-70 ℃, then add 200 weight portion methyl diphenylene diisocyanates, be warming up to 78-82 ℃, react 2 hours; Mixture short-path distillation, to remove unreacted isocyanate-monomer,, is obtained without mould pouring technology base polyurethane prepolymer for use as lower than 0.6% to the percentage composition of mixture middle reaches divorced cyanate ester monomer;
The molecular weight of described polytetrahydrofuran diol is 1000-2000;
(3) preparation of papermaking rubber roller
A, employing have the preparation of mould pouring technology
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in casting machine A tank with base polyurethane prepolymer for use as, be heated to 78-102 ℃, be evacuated to overbottom pressure and be less than 500Pa, deaeration 15-20 minute; Chain extender is moved in casting machine B tank; In chain extension coefficient 0.85-0.98, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
If chain extension coefficient is 0.85-0.95, chain extender is selected low molecule diamine, preferably 3, and 5-dimethythiotoluene diamine or 3,3 ' bis-chloro-4,4 '-diaminodiphenylmethane;
If chain extension coefficient is 0.95-0.98, chain extender is selected low-molecular-weight diol, preferably BDO or quinhydrones-bis-(beta-hydroxyethyl) ether;
3.2 cast
The metal roller core of step (1) is placed in the coated roll mould that is preheated to 110-135 ℃, starts casting machine and pour into a mould, after pouring, 110-135 ℃ of insulation depanning after 30-80 minute, dry, make finished product polyurethane papermaking rubber covered roller;
Described oven dry is to cure 15-20 hour at 110-130 ℃;
B, employing are prepared without mould pouring technology
3.1 get the raw materials ready
Prepared by step (2) moves in cast flush coater A tank with base polyurethane prepolymer for use as without mould pouring technology, is heated to 53-57 ℃, is evacuated to overbottom pressure and is less than 500Pa, deaeration 30 minutes; Chain extender is moved in B tank; In chain extension coefficient 0.85-0.95, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
Described chain extender is low molecule diamine, preferably 3, and 5-dimethythiotoluene diamine or diethyl toluene diamine;
3.2 cast
The metal roller core of step (1) is fixed on rotary casting bed, starts roller core whirligig and make roller core rotation, then start cast flush coater and spray, after having sprayed, pull down rubber roll, carry out turning, polishing, make finished product polyurethane papermaking rubber covered roller.
Above-mentioned high-speed polyurethane papermaking rubber covered roller can be applied to field of papermaking.
The present invention has following advantage and effect with respect to prior art:
1. it is bonding that polyurethane of the present invention and metal roller core adopt resin adhesive, and bonding strength is high, can not produce the delamination of polyurethane and roller core, and rubber roll is durable, long service life.
2. polyurethane dynamic property of the present invention is good, and interior heat-dissipating is little, under high speed high load capacity, can not cause because internal temperature is too high the destruction of rubber roll.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
A high-speed polyurethane papermaking rubber covered roller, by there being mould pouring technology to prepare, specifically comprises the following steps:
(1) surface treatment of metal roller core
The preparation of 1.1 adhesive
The CILBOND 48C (the western nation of Britain chemical industry) that gets 60 weight portions, joins in the mixed solvent of 40 weight portions, is uniformly mixed, and obtains adhesive.Mixed solvent is comprised of isopropyl alcohol, ethyl acetate, MEK, and volumn concentration is respectively 30%, 40% and 30%;
1.2 roller core process of surface treatment
Metallic roll wicking surface is carried out to ramming, then carry out oil removing degreasing with ethyl acetate effects on surface, clean out rear even spraying or brush the adhesive of step 1.1, park 0.5 hour at 30 ℃, then dry 1 hour in 120 ℃ of baking ovens, can be used for cast;
(2) preparation of base polyurethane prepolymer for use as system
Take mean molecule quantity and be 1000 polytetrahydrofuran diol 100 weight portions, drop in reactor, be heated to 120 ± 10 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to after 65 ± 5 ℃, drop into toluene di-isocyanate(TDI) 104.8 weight portions, progressively be warming up to 80 ± 2 ℃, react 2 hours.Then reactant mixture is transferred in short-path distillation equipment, removed unreacted toluene di-isocyanate(TDI) monomer, obtain base polyurethane prepolymer for use as, survey isocyano-content and be about 6.25%, free toluene diisocyanate content of monomer is less than 0.2%;
(3) preparation of papermaking rubber roller
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in the A tank of polyurethane elastomer casting machine with base polyurethane prepolymer for use as, be heated to 85 ± 5 ℃, be evacuated to overbottom pressure and be less than 500pa, deaeration is standby after 15 minutes, by chain extender 3,5-dimethythiotoluene diamine is placed in B tank; In chain extension coefficient 0.85, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
The parts by weight of the required chain extender of every 100 weight portion base polyurethane prepolymer for use as are:
B＝0.0625×2.55×0.85×100
Wherein, 0.0625 is constant when isocyano-content 6.25%, 2.55 adopts 3,5-dimethythiotoluene diamine for chain extender in base polyurethane prepolymer for use as, and 0.85 is chain extension coefficient;
3.2 cast
To be placed in the coated roll mould that is preheated to 110 ℃ by the metal roller core of step (1), starting casting machine pours into a mould, after pouring, 110 ℃ of insulation depannings after 60 minutes, the rubber roll of the demoulding is put into 110 ℃ of baking ovens or drying tunnel post processing 16 hours, make finished product.
Embodiment 2
A high-speed polyurethane papermaking rubber covered roller, by there being mould pouring technology to prepare, specifically comprises the following steps:
(1) surface treatment of metal roller core
The preparation of 1.1 adhesive
The Kai Muluoke 218 (U.S. Lord Corp.) that gets 50 weight portions, joins in the mixed solvent of 50 weight portions, is uniformly mixed.Mixed solvent is comprised of isopropyl alcohol, MEK, trichloro-ethylene, and volumn concentration is respectively 20%, 50% and 30%;
1.2 roller core process of surface treatment
Metallic roll wicking surface is carried out to ramming, then carry out oil removing degreasing with ethyl acetate effects on surface, clean out rear even spraying or brush the adhesive of step 1.1 preparation, park 40 minutes at 25 ℃, then dry 30 minutes in 120 ℃ of baking ovens, can be used for cast;
(2) preparation of base polyurethane prepolymer for use as system
Take mean molecule quantity and be 2000 polytetrahydrofuran diol 100 weight portions, drop in reactor, be heated to 120 ± 10 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to after 65 ± 5 ℃, drop into toluene di-isocyanate(TDI) 69.8 weight portions, progressively be warming up to 80 ± 2 ℃, react 2 hours.Then reactant mixture is transferred in short-path distillation equipment, removed unreacted toluene di-isocyanate(TDI) monomer, obtain base polyurethane prepolymer for use as, survey isocyano-content and be about 3.5%, free toluene diisocyanate content of monomer is less than 0.2%;
(3) preparation of papermaking rubber roller
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in the A tank of polyurethane elastomer casting machine with base polyurethane prepolymer for use as, be heated to 80 ± 2 ℃, be evacuated to overbottom pressure and be less than 500pa, deaeration is standby after 20 minutes, chloro-4, the 4 '-diaminodiphenylmethane of chain extender 3,3 ' bis-is placed in B tank; In chain extension coefficient 0.9, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
The parts by weight of the required chain extender of every 100 weight portion base polyurethane prepolymer for use as are:
B＝0.035×3.18×0.9×100
Wherein, 0.035 is constant when isocyano-content 3.5%, 3.18 adopts 3,3 ' bis-chloro-4,4 '-diaminodiphenylmethane for chain extender in base polyurethane prepolymer for use as, and 0.9 is chain extension coefficient;
3.2 cast
The roller core of step (1) is placed in the coated roll mould that is preheated to 110 ℃, starting casting machine pours into a mould, after pouring, 110 ℃ of insulation depannings after 80 minutes, the rubber roll of the demoulding is put into 110 ℃ of baking ovens or drying tunnel post processing 15 hours, make finished product polyurethane papermaking rubber covered roller.
Embodiment 3
A high-speed polyurethane papermaking rubber covered roller, by there being mould pouring technology to prepare, specifically comprises the following steps:
(1) surface treatment of metal roller core
The preparation of 1.1 adhesive
The Thixon422 (DOW Chemical) that gets 55 weight portions, joins in the mixed solvent of 45 weight portions, is uniformly mixed.Mixed solvent is comprised of isopropyl alcohol, ethyl acetate, trichloro-ethylene, and volumn concentration is respectively 40%, 30%, 30%;
1.2 roller core process of surface treatment
Ramming is carried out in roller core surface, then carry out oil removing degreasing with ethyl acetate effects on surface, clean out rear even spraying or brush the adhesive of step 1.1 preparation, park 1 hour at 20 ℃, then dry 45 minutes in 120 ℃ of baking ovens, can be used for cast;
(2) preparation of base polyurethane prepolymer for use as system
Take mean molecule quantity and be 1000 polytetrahydrofuran diol 100 weight portions, drop in reactor, be heated to 120 ± 10 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to after 70 ± 5 ℃, drop into PPDI 112 weight portions, progressively be warming up to 90 ± 2 ℃, react 2 hours.Then reactant mixture is transferred in short-path distillation equipment, removed unreacted PPDI monomer, obtain base polyurethane prepolymer for use as, survey isocyano-content and be about 6.3%, free PPDI content of monomer is less than 0.2%;
(3) preparation of papermaking rubber roller
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in the A tank of polyurethane elastomer casting machine with base polyurethane prepolymer for use as, be heated to 100 ± 2 ℃, be evacuated to overbottom pressure and be less than 500pa, deaeration is standby after 20 minutes, and chain extender BDO is placed in B tank; In chain extension coefficient 0.95, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
The parts by weight of the required chain extender of every 100 weight portion base polyurethane prepolymer for use as are:
B＝0.063×1.07×0.95×100
Wherein, 0.063 is constant when isocyano-content 6.3%, 1.07 adopts BDO for chain extender in base polyurethane prepolymer for use as, and 0.95 is chain extension coefficient;
3.2 cast
The roller core of step (1) is placed in the coated roll mould that is preheated to 130 ℃, starting casting machine pours into a mould, after pouring, 130 ℃ of insulation depannings after 30 minutes, the rubber roll of the demoulding is put into 130 ℃ of baking ovens or drying tunnel post processing 20 hours, make finished product polyurethane papermaking rubber covered roller.
Embodiment 4
A high-speed polyurethane papermaking rubber covered roller, by there being mould pouring technology to prepare, specifically comprises the following steps:
(1) surface treatment of metal roller core
The preparation of 1.1 adhesive
The Tyrite 7617 (U.S. Lord Corp.) that gets 55 weight portions, joins in the mixed solvent of 45 weight portions, is uniformly mixed.Mixed solvent is comprised of ethyl acetate, MEK, trichloro-ethylene, and volumn concentration is respectively 35%, 25%, 40%;
1.2 roller core process of surface treatment
Metallic roll wicking surface is carried out to ramming, then carry out oil removing degreasing with ethyl acetate effects on surface, clean out rear even spraying or brush the adhesive of step 1.1 preparation, park 1 hour at 20 ℃, then dry 45 minutes in 120 ℃ of baking ovens, can be used for cast;
(2) preparation of base polyurethane prepolymer for use as system
Take mean molecule quantity and be 2000 polytetrahydrofuran diol 100 weight portions, drop in reactor, be heated to 120 ± 10 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to after 70 ± 5 ℃, drop into PPDI 80 weight portions, progressively be warming up to 90 ± 2 ℃, react 2 hours.Then reactant mixture is transferred in short-path distillation equipment, removed unreacted PPDI monomer, obtain base polyurethane prepolymer for use as, survey isocyano-content and be about 3.5%, free PPDI content of monomer is less than 0.2%;
(3) preparation of papermaking rubber roller
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in the A tank of polyurethane elastomer casting machine with base polyurethane prepolymer for use as, be heated to 100 ± 2 ℃, be evacuated to overbottom pressure and be less than 500pa, deaeration is standby after 20 minutes, and chain extender quinhydrones-bis-(beta-hydroxyethyl) ether is placed in B tank; In chain extension coefficient 0.98, adjust the ratio of base polyurethane prepolymer for use as and chain extender;
The parts by weight of the required chain extender of every 100 weight portion base polyurethane prepolymer for use as are:
B＝0.035×2.36×0.98×100
Wherein, 0.035 is constant when isocyano-content 3.5%, 2.36 adopts quinhydrones-bis-(beta-hydroxyethyl) ether for chain extender in base polyurethane prepolymer for use as, and 0.98 is chain extension coefficient;
3.2 cast
The roller core of step (1) is placed in the coated roll mould that is preheated to 135 ℃, starting casting machine pours into a mould, after pouring, 135 ℃ of insulation depannings after 30 minutes, the rubber roll of the demoulding is put into 130 ℃ of baking ovens or drying tunnel post processing 20 hours, make finished product polyurethane papermaking rubber covered roller.
Embodiment 5
A high-speed polyurethane papermaking rubber covered roller, by preparing without mould pouring technology, specifically comprises the following steps:
(1) surface treatment of metal roller core
The preparation of 1.1 adhesive
The Kai Muluoke 213 (U.S. Lord Corp.) that gets 60 weight portions, joins in the mixed solvent of 40 weight portions, is uniformly mixed.Mixed solvent is comprised of isopropyl alcohol, ethyl acetate, MEK, trichloro-ethylene, and volumn concentration is respectively 20%, 25%, 20% and 35%;
1.2 roller core process of surface treatment
Metallic roll wicking surface is carried out to ramming, then carry out oil removing degreasing with ethyl acetate effects on surface, clean out rear even spraying or brush the adhesive of step 1.1 preparation, park 45 minutes at 25 ℃, then dry 45 minutes in 120 ℃ of baking ovens, can be used for cast;
(2) preparation of base polyurethane prepolymer for use as system
Take mean molecule quantity and be 1000 polytetrahydrofuran diol 100 weight portions, drop in reactor, be heated to 120 ± 10 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to after 65 ± 5 ℃, drop into methyl diphenylene diisocyanate 200 weight portions, progressively be warming up to 80 ± 2 ℃, react 2 hours.Then reactant mixture is transferred in short-path distillation equipment, remove unreacted methyl diphenylene diisocyanate monomer, obtain base polyurethane prepolymer for use as, survey isocyano-content and be about 5.8%, free methyl diphenylene diisocyanate content of monomer is less than 0.6%, and gel time is controlled at 8～15s.
(3) preparation of papermaking rubber roller
3.1 get the raw materials ready
By moving in polyurethane elastomer cast flush coater A tank with base polyurethane prepolymer for use as without mould pouring technology of step (2), be heated to 55 ± 2 ℃, be evacuated to overbottom pressure and be less than 500Pa, deaeration 30 minutes, chain extender diethyl toluene diamine is moved in B tank, in chain extension coefficient 0.90, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
The parts by weight of the required chain extender of every 100 weight portion base polyurethane prepolymer for use as are:
B＝0.058×2.12×0.90×100
Wherein, 0.058 is constant when isocyano-content 5.8%, 2.12 adopts diethyl toluene diamine for chain extender in base polyurethane prepolymer for use as, and 0.90 is chain extension coefficient;
3.2 cast
The metal roller core of step (1) is fixed on rotary casting bed, start roller core whirligig and make roller core rotation, then opening also at the uniform velocity mobile casting machine pours into a mould, after pouring, pull down rubber roll and carry out post vulcanization, then carry out turning, polishing, some also wants surface prick hole and clean out, and makes finished product polyurethane papermaking rubber covered roller.
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (2)
1. a preparation method for polyurethane papermaking rubber covered roller, is characterized in that comprising the following steps:
(1) surface treatment of metal roller core: metallic roll wicking surface is carried out to ramming, oil removing degreasing, clean out rear even spraying or brush adhesive, park 0.5-1 hour at 20-30 ℃, dry, can be used for cast;
Described adhesive is obtained by following methods preparation: in the mixed solvent of 40-50 weight portion, add the resin adhesive of 50-60 weight portion, be uniformly mixed and get final product;
Described mixed solvent is grouped into by the one-tenth of following percent by volume:
Isopropyl alcohol: 0-40%
Ethyl acetate: 0-40%
MEK: 0-50%
Trichloro-ethylene: 0-40%;
Described resin adhesive is a kind of in CILBOND 48C, Kai Muluoke 218, Thixon422, Tyrite 7617 or Kai Muluoke 213;
(2) prepare base polyurethane prepolymer for use as
A, there is mould pouring technology base polyurethane prepolymer for use as
Get 100 weight portion polytetrahydrofuran diols, be heated to 110-130 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to 60-75 ℃, then add 69.8-112 weight portion isocyanates, be warming up to 78-92 ℃, react 2 hours; By mixture short-path distillation to the percentage composition of mixture middle reaches divorced cyanate ester monomer lower than 0.2%, obtained mould pouring technology base polyurethane prepolymer for use as;
Described isocyanates is toluene di-isocyanate(TDI) or PPDI;
B, without mould pouring technology base polyurethane prepolymer for use as
Get 100 weight portion polytetrahydrofuran diols, be heated to 110-130 ℃, be evacuated to overbottom pressure and be less than 500Pa, remove moisture 2 hours, be cooled to 60-70 ℃, then add 200 weight portion methyl diphenylene diisocyanates, be warming up to 78-82 ℃, react 2 hours; By mixture short-path distillation to the percentage composition of mixture middle reaches divorced cyanate ester monomer lower than 0.6%, obtain without mould pouring technology base polyurethane prepolymer for use as;
(3) preparation of papermaking rubber roller
A, employing have the preparation of mould pouring technology
3.1 get the raw materials ready
The mould pouring technology that has of step (2) is moved in casting machine A tank with base polyurethane prepolymer for use as, be heated to 78-102 ℃, be evacuated to overbottom pressure and be less than 500Pa, deaeration 15-20 minute; Chain extender is moved in casting machine B tank; In chain extension coefficient 0.85-0.98, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
If chain extension coefficient is R;
If 0.85≤R < 0.95, chain extender is that 3,5-dimethythiotoluene diamine or 3,3' bis-are chloro-4,4'-diaminodiphenylmethane;
If 0.95≤R≤0.98, chain extender is BDO or quinhydrones-bis-(beta-hydroxyethyl) ether;
3.2 cast
The metal roller core of step (1) is placed in the coated roll mould that is preheated to 110-135 ℃, starts casting machine and pour into a mould, after pouring, 110-135 ℃ of insulation depanning after 30-80 minute, dry, make finished product polyurethane papermaking rubber covered roller;
B, employing are prepared without mould pouring technology
3.1 get the raw materials ready
Prepared by step (2) moves in cast flush coater A tank with base polyurethane prepolymer for use as without mould pouring technology, is heated to 53-57 ℃, is evacuated to overbottom pressure and is less than 500Pa, deaeration 30 minutes; Chain extender is moved in B tank; In chain extension coefficient 0.85-0.95, regulate the ratio of base polyurethane prepolymer for use as and chain extender;
Described chain extender is 3,5-dimethythiotoluene diamine or diethyl toluene diamine;
3.2 cast
The metal roller core of step (1) is fixed on rotary casting bed, starts roller core whirligig and make roller core rotation, then start cast flush coater and spray, after having sprayed, pull down rubber roll, carry out turning, polishing, make finished product polyurethane papermaking rubber covered roller.
2. the preparation method of polyurethane papermaking rubber covered roller according to claim 1, is characterized in that: the described oven dry of step (1) is to dry 0.5-1 hour at 120 ℃.
3, the preparation method of polyurethane papermaking rubber covered roller according to claim 1, is characterized in that: the molecular weight of the described polytetrahydrofuran diol of step (2) is 1000-2000.
4, the preparation method of polyurethane papermaking rubber covered roller according to claim 1, is characterized in that: described in step 3.2, drying is to cure 15-20 hour at 110-130 ℃.
5, a polyurethane papermaking rubber covered roller, is characterized in that: be to be prepared by the method described in claim 1-4 any one;
Described polyurethane papermaking rubber covered roller is comprised of metal roller core and the polyurethane being bonded on metal roller core; Described polyurethane and metal roller core pass through adhesive bonds.
6, the application of polyurethane papermaking rubber covered roller claimed in claim 5 in field of papermaking.
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| CN201110355516.4A CN102505555B (en) | 2011-11-10 | 2011-11-10 | High-speed polyurethane papermaking rubber covered roller, preparation method thereof and application |
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| CN201110355516.4A CN102505555B (en) | 2011-11-10 | 2011-11-10 | High-speed polyurethane papermaking rubber covered roller, preparation method thereof and application |
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| CN103012725A (en) * | 2013-01-21 | 2013-04-03 | 江苏斯泰达新能源科技发展有限公司 | Polyurethane raw liquid for rubber rolls available for mould-free casting |
| CN103770261B (en) * | 2014-01-24 | 2016-08-31 | 致恒(天津)实业有限公司 | A kind of polyurethane and the bonding process of metal |
| CN105149176A (en) * | 2015-08-29 | 2015-12-16 | 安徽龙川橡塑科技有限公司 | Adhesive coating technique for polyurethane screen framework |
| CN109760244A (en) * | 2019-01-14 | 2019-05-17 | 安徽鼎宏胶辊有限公司 | A kind of polyurethane pours 50A applicator roll technique |
| CN111746055A (en) * | 2020-06-07 | 2020-10-09 | 沈阳东阳聚氨酯有限公司 | Polyurethane elastomer rubber roller with long service life |
| CN113172918A (en) * | 2021-05-08 | 2021-07-27 | 杭州顺隆胶辊有限公司 | Polyurethane rubber roller dieless rotary casting process |
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| WO2001072864A1 (en) * | 2000-03-27 | 2001-10-04 | Uniroyal Chemical Company, Inc. | Rotational casting method for coating a flexible substrate and resulting coated flexible article |
| WO2009156851A1 (en) * | 2008-06-25 | 2009-12-30 | Danisco A/S | Anti-fouling composition comprising a first enzyme and an encapsulated second enzyme |
| WO2010003460A1 (en) * | 2008-07-10 | 2010-01-14 | Metso Paper, Inc. | A roll for a fiber web machine and a method for manufacturing the roll |
| CN101796092A (en) * | 2007-09-07 | 2010-08-04 | 沃依特专利有限责任公司 | Polyurethane roller and method for the production thereof |
| CN201620310U (en) * | 2009-10-29 | 2010-11-03 | 杭州顺隆胶辊有限公司 | Polyurethane rubber roll for papermaking |
-
2011
- 2011-11-10 CN CN201110355516.4A patent/CN102505555B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001072864A1 (en) * | 2000-03-27 | 2001-10-04 | Uniroyal Chemical Company, Inc. | Rotational casting method for coating a flexible substrate and resulting coated flexible article |
| CN101796092A (en) * | 2007-09-07 | 2010-08-04 | 沃依特专利有限责任公司 | Polyurethane roller and method for the production thereof |
| WO2009156851A1 (en) * | 2008-06-25 | 2009-12-30 | Danisco A/S | Anti-fouling composition comprising a first enzyme and an encapsulated second enzyme |
| WO2010003460A1 (en) * | 2008-07-10 | 2010-01-14 | Metso Paper, Inc. | A roll for a fiber web machine and a method for manufacturing the roll |
| CN201620310U (en) * | 2009-10-29 | 2010-11-03 | 杭州顺隆胶辊有限公司 | Polyurethane rubber roll for papermaking |
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| CN102505555A (en) | 2012-06-20 |
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