CN103665318A - Polyurethane resin and application therefore in preparation of high-hardness high-transparency printer scraper blade - Google Patents
Polyurethane resin and application therefore in preparation of high-hardness high-transparency printer scraper blade Download PDFInfo
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- CN103665318A CN103665318A CN201310706294.5A CN201310706294A CN103665318A CN 103665318 A CN103665318 A CN 103665318A CN 201310706294 A CN201310706294 A CN 201310706294A CN 103665318 A CN103665318 A CN 103665318A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4202—Two or more polyesters of different physical or chemical nature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
- C08K5/19—Quaternary ammonium compounds
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses polyurethane resin and application therefore in preparation of a high-hardness high-transparency printer scraper blade. The polyurethane resin is characterized by containing a polyurethane resin component A and a polyurethane resin component B, wherein the polyurethane resin component A is prepared from the following ingredients in parts by weight: 100 parts of polyester polyol, 10-20 parts of a chain extension and crosslinking agent, 0.5-2.0 parts of a defoaming agent, 0.5-2.0 parts of an antistatic agent, 0.5-2.0 parts of an antiager and 0.1-1.0 part of a catalyst. The scraper blade prepared by the polyurethane resin has the characteristics of high hardness, high elastic resilience, high transparency, anti-static electricity and the like, and the service life of the printer scraper blade is prolonged.
Description
Technical field
The present invention relates to a kind of urethane resin and application thereof.
Background technology
Print or duplicating process in, by cleaning blade and photosensitive drums, under predetermined pressure, keep in touch to remove ink marks residual on photoreceptor, clear thereby assurance photocopies a document.Drum selenium scraper plate has good mechanical property, antistatic property, lower elastic deformation and high-clarity with material requirements, polyurethane elastomer has good tensile strength, tear strength and elongation at break, can be made into high transparent high-elasticity material, be desirable toner cartridge scraper material simultaneously.
Jia Lin just waits at < < polyurethane industrial > > and within 2009, in the 24th the 2nd phase of volume 21～24 pages of papers of delivering, announced with prepolymer method and the synthetic duplicating machine cleaning blade polyurethane elastomer of semi-prepolymer method, studied the impact of two kinds of Process on the mechanical propertys such as the hardness of scraping blade, bounce impact elasticity and dynamic properties.But polyurethane elastomer is as a kind of insulating material, surface easily produces static hazard through friction repeatedly, and the light easy absorption dust in surface is heavy produce static sparking, even causes fire.Cleaning blade and photosensitive drums Long Term Contact, because friction produces static, cause scraping blade to speckle with ink powder and pollute file.Therefore, urethane cleaning blade not only needs to meet every mechanical property requirements, will have static resistance simultaneously.
Zhang Jincui etc. have announced employing oligomer polyol and the synthetic performed polymer of vulcabond for 2012 at < < polyurethane industrial > > in the 27th the 1st phase of volume 23～26 pages of papers of delivering, with 3,5-dimethyl sulphur-based toluene is chainextender, adds internal doping type static inhibitor to prepare the method for polyurethane elastomer for magnetic drum scraper plate.But its vulcabond raw material used is tolylene diisocyanate (TDI-100) has strong impulse smell, and toxicity is large, if production operator Long Term Contact may cause chronic bronchitis etc., does not meet the requirement of safety and environmental protection.
Summary of the invention
The object of this invention is to provide a kind of urethane resin and the application in preparing high hardness high transparency printer wing, the above-mentioned defect existing to overcome prior art.
Urethane resin of the present invention, comprises urethane resin A component and urethane resin B component;
Described urethane resin A component is comprised of the component of following parts by weight:
Described polyester polyol is dibasic alcohol and the reaction product of diprotic acid under catalyzer metatitanic acid four isopropyl esters exist, and hydroxyl value is 112.2～37.4mgKOH/g, and weight-average molecular weight is 1000～3000;
Described dibasic alcohol is one or more in ethylene glycol, BDO, 1,2-PD, 1,3-PD;
Described diprotic acid is hexanodioic acid or succinic acid;
Described chain extension-crosslinking agent is the mixture of chainextender BDO, 1,3-PD and linking agent TriMethylolPropane(TMP), (BDO and 1,3 propylene glycol mixture): TriMethylolPropane(TMP) is 3:1～5:1;
Described static inhibitor is quaternary ammonium salt static inhibitor;
Described defoamer is Wickenol 101 or 2,2,4-trimethylammonium-1, the two isobutyrates (TXIB) of 3-pentanediol;
Described antiager is one or more in UV-531, UV-320, UV-770;
Described catalyzer is the composite catalyst of organic zinc and organo-bismuth, can adopt business-like product;
The preparation method of described polyester polyol, comprises the steps:
By dibasic alcohol and diprotic acid under nitrogen protection and catalyzer metatitanic acid four isopropyl esters exist, at 140～180 ℃, carry out esterification, the water of generation is removed in distillation simultaneously, then at 200～220 ℃, carry out polycondensation, the water of generation is removed in distillation simultaneously, and reaction is 112.2～37.4mgKOH/g to the hydroxyl value of the polyester polyol obtaining, and weight-average molecular weight is 1000～3000;
The parts by weight of each component are as follows:
Described polyester polyol, catalyzer, chain extension-crosslinking agent, antiager, defoamer and static inhibitor are mixed, can obtain urethane resin A component;
Described urethane resin B component is the reaction product of described polyester polyol and vulcabond;
Parts by weight are:
100 parts of vulcabond, 40～100 parts of polyester polyols; Preferred 60～80 parts;
Described vulcabond is 4,4 '-ditolyl methane vulcabond MDI;
Described polyester polyol is dibasic alcohol and diprotic acid, the reaction product under catalyzer metatitanic acid four isopropyl esters exist, and hydroxyl value is 224.4～56.1mgKOH/g, weight-average molecular weight is 500～2000;
The preparation method of urethane resin B component, comprises the steps:
By described polyester polyol and vulcabond hybrid reaction, temperature of reaction is 40 ℃～90 ℃, and preferably 60～70 ℃, the reaction times is 2～8 hours, preferably 3～4 hours, can obtain described urethane resin B component;
The consumption of described urethane resin A component and described urethane resin B component is:
The reactive hydrogen mole number of A component is 100: 110 with the ratio of the mole number of the isocyanate groups of B component;
Described urethane resin, can be for the preparation of high hardness high transparency printer wing, preparation method comprises the steps: described urethane resin A component to mix with described urethane resin B component, mixing temperature is 30 ℃～80 ℃, be poured in 100～120 ℃ of moulds, curing molding 20～60min in the vulcanizing press of 100～120 ℃, after shaping and demoulding, place the baking oven postcure 8～24h of 90～110 ℃, can obtain high hardness high transparency printer wing.
The invention has the beneficial effects as follows:
Adopt urethane resin prepared by the inventive method for the preparation of printer wing, its wing of making has high rigidity, high resilience, the high feature such as transparent and antistatic, has extended the work-ing life of printer wing.Stopped the Electrostatic Hidden Troubles producing in use procedure, meanwhile, the raw material adopting and synthetic resins thereof reach the requirement of international safety standard, are the real transparent scraping blades of environment-friendly type.
Specific implementation method
Below by embodiment, the present invention is specifically described, is only used to further illustrate the present invention, can not be interpreted as limiting the scope of the present invention.The implementation condition adopting in embodiment can be done some nonessential improvement and adjustment according to the condition of concrete producer and requirement.
Embodiment 1
Be furnished with distillation tower and phegma receptor can reacting by heating still in; the hexanodioic acid that adds 11.73kg; add successively 1 of the ethylene glycol of 2.99kg and 4.78kg; 4-butyleneglycol; after opening whipping appts and nitrogen atmosphere protector, be warming up to 140 ℃, in reaction process, by distillation, remove resultant water.Add the catalyzer metatitanic acid four isopropyl ester TIPT of 1.94g again, reduce pressure to 12.5 ± 2.5mbar, rising temperature to 220 ℃ left and right, continues polycondensation, in reaction process, by distillation, removes resultant water.Hydroxyl value and the acid number of mixture in assaying reaction container, when hydroxyl value is 56.1mgKOH/g, and acid number is while reaching 0.4mgKOH/g left and right (weight-average molecular weight reaches 2000 left and right), reactor vessel cooled, make temperature be reduced to room temperature, termination reaction, obtains polyester polyol 1.
Embodiment 2
Be furnished with distillation tower and phegma receptor can reacting by heating still in; the hexanodioic acid that adds 11.52kg; add successively 1 of the ethylene glycol of 3.99kg and 3.99kg; 4-butyleneglycol; after opening whipping appts and nitrogen atmosphere protector, be warming up to 140 ℃, in reaction process, by distillation, remove resultant water.Add the catalyzer metatitanic acid four isopropyl ester TIPT of 2.23g again, reduce pressure to 12.5 ± 2.5mbar, rising temperature to 220 ℃ left and right, continues polycondensation, in reaction process, by distillation, removes resultant water.Hydroxyl value and the acid number of mixture in assaying reaction container, when hydroxyl value is 112.2mgKOH/g, and acid number is while reaching 0.4mgKOH/g left and right (weight-average molecular weight reaches 1000 left and right), reactor vessel cooled, make temperature be reduced to room temperature, termination reaction, obtains polyester polyol 2.
Embodiment 3
Be furnished with distillation tower and phegma receptor can reacting by heating still in; the hexanodioic acid that adds 12.36kg; add successively 1 of the ethylene glycol of 4.76kg and 2.38kg; 4-butyleneglycol; after opening whipping appts and nitrogen atmosphere protector, be warming up to 140 ℃, in reaction process, by distillation, remove resultant water.Add the catalyzer metatitanic acid four isopropyl ester TIPT of 2.14g again, reduce pressure to 12.5 ± 2.5mbar, rising temperature to 220 ℃ left and right, continues polycondensation, in reaction process, by distillation, removes resultant water.Hydroxyl value and the acid number of mixture in assaying reaction container, when hydroxyl value is 37.4mgKOH/g, and acid number is while reaching 0.4mgKOH/g left and right (weight-average molecular weight reaches 3000 left and right), reactor vessel cooled, make temperature be reduced to room temperature, termination reaction, obtains polyester polyol 3.
Embodiment 4
Be furnished with distillation tower and phegma receptor can reacting by heating still in; the hexanodioic acid that adds 10.88kg; add successively 1 of the ethylene glycol of 5.17kg and 3.45kg; 4-butyleneglycol; after opening whipping appts and nitrogen atmosphere protector, be warming up to 140 ℃, in reaction process, by distillation, remove resultant water.Add the catalyzer metatitanic acid four isopropyl ester TIPT of 2.41g again, reduce pressure to 12.5 ± 2.5mbar, rising temperature to 220 ℃ left and right, continues polycondensation, in reaction process, by distillation, removes resultant water.Hydroxyl value and the acid number of mixture in assaying reaction container, when hydroxyl value is 224.4mgKOH/g, and acid number is while reaching 0.4mgKOH/g left and right (weight-average molecular weight reaches 500 left and right), reactor vessel cooled, make temperature be reduced to room temperature, termination reaction, obtains polyester polyol 4.
Embodiment 5～10
Data according to cited each raw material addition of urethane A component of table I, accurately take each raw material, and drop in reactor, mix discharging after 3 hours at 45 ℃, and sealing is preserved, and obtains urethane resin A component;
According to the data of cited each raw material addition of urethane B component of table I, accurately take each raw material, and drop in reactor, embodiment 5～7 reacts 4 hours under 60 ℃ of conditions, embodiment 8～10 reacts 3 hours under 70 ℃ of conditions, after vacuum removal bubble, reduces temperature to 40 ℃, sampling analysis free-NCO content, sealing is preserved with standby, obtains urethane resin B component;
The A component of the embodiment 5～6 that control table I is cited and the temperature of B component are 30 ℃, the A component of embodiment 7～8 and the temperature of B component are 50 ℃, the A component of embodiment 9～10 and the temperature of B component are 80 ℃, adjust the consumption of A component and B component, the reactive hydrogen mole number that makes A component and B component-ratio of the mole number of NCO is 100: 110, after two components are mixed, mixed two components in embodiment 5～6 are poured in 100 ℃ of moulds, curing molding 60min in the vulcanizing press of 100 ℃, mixed two components in embodiment 7～8 are poured in 110 ℃ of moulds, curing molding 40min in the vulcanizing press of 110 ℃, in embodiment 9～10, mixed two components are poured in 120 ℃ of moulds, curing molding 20min in the vulcanizing press of 120 ℃, after shaping and demoulding, embodiment 5～6 is postcure 24h in the baking oven of 90 ℃, embodiment 7～8 is postcure 16h in the baking oven of 100 ℃, embodiment 9～10 is postcure 8h in the baking oven of 110 ℃, obtain high hardness high transparency printer wing.
Table I
In above-described embodiment, raw materials used source is as follows:
Static inhibitor is the AT-6 of Zhejiang Province Huafeng New materials Co., Ltd;
UV-531 is the Chimassorb81 of BASF Aktiengesellschaft;
Bismuth zinc composite catalyst is the BiCAT8 of the leading chemical company of the U.S.;
The LupranateM that 4,4 '-diphenylmethanediisocyanate (MDI) is BASF Aktiengesellschaft and Lupranate MS.
Every physical property measurement of the prepared high hardness high transparency printer of embodiment 5～10 wing sample the results are shown in table II.
Table II
Screen resilience test is undertaken by the regulation of ASTMD2632;
Transparency index is measured: by measurements have 20-20 eyesight (with or without correcting lens) the ability that reads through the test piece of embodiment 5-10 of viewer, determine transparency.On common blank sheet of paper, stamp 14 character pitch Time New Roman capitalizations arbitrarily.The alphabetical per-cent that the viewer who observes through test piece as the distance with 18 inches can definitely identify, provides transparency index.
To sum up, adopt urethane resin prepared by the inventive method for the preparation of printer wing, its wing of making has high rigidity, high resilience, the high feature such as transparent and antistatic, has extended the work-ing life of printer wing.
Although above-described embodiment describes in detail technical scheme of the present invention, but technical scheme of the present invention is not limited to above embodiment, do not departing from thought of the present invention and aim situation, the equivalence that the content of the present patent application the scope of the claims is done changes or modifies, and all should be technology category of the present invention.
Claims (9)
1. urethane resin, is characterized in that, comprises urethane resin A component and urethane resin B component;
Described urethane resin A component is comprised of the component of following parts by weight:
Described urethane resin B component is the reaction product of described polyester polyol and vulcabond.
2. urethane resin according to claim 1, it is characterized in that, described polyester polyol is dibasic alcohol and diprotic acid, the reaction product under catalyzer metatitanic acid four isopropyl esters exist, hydroxyl value is 112.2～37.4mgKOH/g, and weight-average molecular weight is 1000～3000.
3. urethane resin according to claim 1, is characterized in that, described dibasic alcohol is one or more in ethylene glycol, BDO, 1,2-PD, 1,3-PD;
Described diprotic acid is hexanodioic acid or succinic acid;
Described chain extension-crosslinking agent is the mixture of chainextender BDO, 1,3-PD and linking agent TriMethylolPropane(TMP), (BDO and 1,3 propylene glycol mixture): TriMethylolPropane(TMP) is 3:1～5:1;
Described static inhibitor is quaternary ammonium salt static inhibitor;
Described defoamer is Wickenol 101 or 2,2,4-trimethylammonium-1, the two isobutyrates (TXIB) of 3-pentanediol;
Described antiager is one or more in UV-531, UV-320, UV-770;
Described catalyzer is the composite catalyst of organic zinc and organo-bismuth.
4. urethane resin according to claim 1, is characterized in that, described urethane resin B component is the reaction product of described polyester polyol and vulcabond, and parts by weight are: 100 parts of vulcabond; 40～100 parts of polyester polyols; Preferred 60～80 parts.
5. urethane resin according to claim 4, is characterized in that, described urethane resin B component is the reaction product of described polyester polyol and vulcabond, and described vulcabond is 4,4 '-ditolyl methane vulcabond MDI; Described polyester polyol is dibasic alcohol and the reaction product of diprotic acid under catalyzer metatitanic acid four isopropyl esters exist, and hydroxyl value is 224.4～56.1mgKOH/g, and weight-average molecular weight is 500～2000.
6. according to the urethane resin described in claim 1～5 any one, it is characterized in that, the consumption of described urethane resin A component and described urethane resin B component is: the reactive hydrogen mole number of A component is 100: 110 with the ratio of the mole number of the isocyanate groups of B component.
7. according to the application of the urethane resin described in claim 1～6 any one, it is characterized in that, for the preparation of high hardness high transparency printer wing.
8. application according to claim 7, it is characterized in that, comprise the steps: described urethane resin A component to mix with described urethane resin B component, in casting mold, curing molding in vulcanizer, after shaping and demoulding, place baking oven postcure, can obtain high hardness high transparency printer wing.
9. application according to claim 8, is characterized in that, mixing temperature is 30 ℃～80 ℃, be poured in 100～120 ℃ of moulds, curing molding 20～60min in the vulcanizing press of 100～120 ℃, after shaping and demoulding, places the baking oven postcure 8～24h of 90～110 ℃.
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Cited By (4)
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| CN105176057A (en) * | 2015-09-22 | 2015-12-23 | 深圳市力信陆南橡塑五金有限公司 | Anti-static polyurethane (PU) elastomer and preparation method and application thereof |
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| CN110228196A (en) * | 2019-06-20 | 2019-09-13 | 中博(烟台)技术研究院 | Application and preparation method thereof of the plasma scraper in 3D printing |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105176057A (en) * | 2015-09-22 | 2015-12-23 | 深圳市力信陆南橡塑五金有限公司 | Anti-static polyurethane (PU) elastomer and preparation method and application thereof |
| CN105176057B (en) * | 2015-09-22 | 2017-08-25 | 深圳市力信陆南橡塑五金有限公司 | Excellent power glue of antistatic and its preparation method and application |
| CN106432775A (en) * | 2016-09-20 | 2017-02-22 | 中山市鼎诚盛办公设备有限公司 | Preparation method of polyurethane squeegee for printer |
| CN106432775B (en) * | 2016-09-20 | 2019-06-07 | 中山市鼎诚盛新材料有限公司 | A kind of preparation method of printer polyurethane blade piece |
| CN107501514A (en) * | 2017-08-15 | 2017-12-22 | 百恩实业（深圳）有限公司 | A kind of casting type polyurethane elastomer semi-prepolymer for producing screen printing brush coating and scraping |
| CN107501514B (en) * | 2017-08-15 | 2020-07-14 | 百恩实业（深圳）有限公司 | Casting type polyurethane elastomer semi-prepolymer for producing screen printing rubber scraper |
| CN110228196A (en) * | 2019-06-20 | 2019-09-13 | 中博(烟台)技术研究院 | Application and preparation method thereof of the plasma scraper in 3D printing |
| CN110228196B (en) * | 2019-06-20 | 2021-07-23 | 山东创瑞激光科技有限公司 | Application of plasma scraper in 3D printing and preparation method thereof |
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