CN106832199A - A kind of carborundum polyurethane elastic composite material and preparation method thereof and its roll shaft for using - Google Patents
A kind of carborundum polyurethane elastic composite material and preparation method thereof and its roll shaft for using Download PDFInfo
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- CN106832199A CN106832199A CN201710103246.5A CN201710103246A CN106832199A CN 106832199 A CN106832199 A CN 106832199A CN 201710103246 A CN201710103246 A CN 201710103246A CN 106832199 A CN106832199 A CN 106832199A
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- carborundum
- composite material
- weight portion
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- elastic composite
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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
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
-
- 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
-
- 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
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- 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
- C08K3/34—Silicon-containing 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing 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
- C08K2201/011—Nanostructured additives
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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)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of carborundum polyurethane elastic composite material and preparation method thereof and its roll shaft for using, the silane coupler that is prepared as raw material with γ (second diaminourea) propyl trimethoxy silicane, double (3 three ethoxy silylpropyl) tetrasulfides is mainly utilized in above-mentioned preparation method and with polytetramethylene ether diol, 4,4' dicyclohexyl methyl hydride diisocyanates are the modified carborundum of polyurethane prepolymer prepared by raw material, so as to prepare carborundum polyurethane elastic composite material.By using the moderate roll shaft of the hardness of the carborundum polyurethane elastic composite material preparation of method of the present invention preparation, when being applied to grind cereal processed or polishing rice, it is ensured that capes and the situation cracked rice are reduced while grinding the effect made and polish.
Description
Technical field
The present invention relates to agricultural machinery Material Field, more particularly to a kind of carborundum polyurethane elastic composite material and its system
Preparation Method and its roll shaft for using.
Background technology
Rice mill is identical with the principle of polishing machine, be all by roll shaft on screen cloth crush and grind cereal or rice so that
Cereal is shelled, or polish rice.Existing roll shaft has two kinds, and a kind of is the standby rubber roll of polyurethane, and another kind is SiC systems
Standby sand roller.The hardness of rubber roll is too soft, so often occurring that shelling is not clean or polishes insufficient in polishing process processed is ground
Situation.And the hardness of sand roller is too big, cereal or rice cannot usually bear and cause capes or crack rice.
Therefore, manufacture roll shaft needs the material that hardness is between polyurethane and SiC.However, simple mixing can not make
Polyurethane forms uniform material with SiC.
The content of the invention
For the above mentioned problem that existing rice mill and/or polishing machine roll shaft are present, now provide a kind of hardness moderate carbon
SiClx polyurethane elastic composite material and preparation method thereof and its roll shaft for using.
Concrete technical scheme is as follows：
The first aspect of the invention is to provide a kind of preparation method of carborundum polyurethane elastic composite material, with this
The feature of sample, comprises the following steps：
S1：By γ-(second diaminourea) propyl trimethoxy silicane and double (the ethoxy silylpropyls of 3- tri-) tetrasulfides
With 1:1.5~2 weight, after 6~8h is reacted at 80~90 DEG C, is obtained silane coupler than mixing；
S2：To 100~150 weight portion paraxylene of addition, 30~50 weight portion silicon carbide micro-powders and 70 in reaction vessel
Gained silane coupler in~100 weight portion S1, is warming up to 85~89 DEG C, stirring 6~8h of lower reaction, reaction under stream of nitrogen gas
Vacuum filtration after end, through repeated ultrasonic dispersion, centrifuge washing, obtains solid product, and ultrasonic disperse, centrifuge washing are excellent in the present invention
Elect as 3 times；
S3：Solid product in S2 is dried into 8~10h in 105~110 DEG C of baking oven, modified Nano carborundum is obtained；
S4：30~50 weight portion polytetramethylene ether diols are dried into 2~3h under 100~110 DEG C of baking oven, is cooled to
35~39 DEG C, in 40~55 weight portions 4 of addition in 3~5min under quick stirring, 4'- dicyclohexyl methyl hydride diisocyanates,
Temperature is insulation reaction 2.5h, vacuum defoamation 30min under conditions of 80~85 DEG C, obtains polyurethane prepolymer；
S5：To gained modified Nano carborundum in S3 is added in gained polyurethane prepolymer in S4, roll to well mixed,
In 10~20 weight portion Isosorbide-5-Nitraes-dihydroxy butane and 0.2~1 weight portion defoamer is rapidly added in 1~3min, it is sufficiently stirred for, takes out
Go out bubble, in curing molding at 85 DEG C, obtain carborundum polyurethane elastic composite material.
Above-mentioned preparation method, also has the feature that, polyurethane prepolymer and modified Nano carborundum in the S5
Mixture in modified Nano carborundum mass fraction be 15~30%.
The second aspect of the invention is to provide a kind of carborundum polyurethane elastic composite material, has the feature that,
Prepared by above-mentioned preparation method.
The third aspect of the invention is to provide a kind of roll shaft for grinding burnishing device processed, has the feature that, by
Above-mentioned carborundum polyurethane elastic composite material is prepared.
The beneficial effect of such scheme is：
Roll shaft prepared by the carborundum polyurethane elastic composite material prepared by using preparation method of the invention
Hardness is moderate, when being applied to grind cereal processed or polishing rice, it is ensured that reduced while the effect for grinding system and polishing capes with
The situation cracked rice.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described,
Obviously, described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made,
Belong to the scope of protection of the invention.
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.
Embodiment 1
In embodiment 1 in the preparation method of carborundum polyurethane elastic composite material, comprise the following steps：
S1：By γ-(second diaminourea) propyl trimethoxy silicane and double (the ethoxy silylpropyls of 3- tri-) tetrasulfides
With 1:1.6 weight, after 6.5h is reacted at 85 DEG C, is obtained silane coupler than mixing；
S2：To in adding 110 weight portion paraxylene, 35 weight portion silicon carbide micro-powders and 80 weight portion S1 in reaction vessel
Gained silane coupler, is warming up to 85~89 DEG C under stream of nitrogen gas, and the lower reaction 6.5h of stirring, reaction terminates rear vacuum filtration,
Through 3 ultrasonic disperses, centrifuge washings, solid product is obtained；
S3：Solid product in S2 is dried into 8.5h in 106 DEG C of baking oven, modified Nano carborundum is obtained；
S4：32 weight portion polytetramethylene ether diols are dried into 2.5h under 103 DEG C of baking oven, 36 DEG C is cooled to, quickly
In 43 weight portions 4 are added in 4min under stirring, 4'- dicyclohexyl methyl hydride diisocyanates are protected under conditions of being 81 DEG C in temperature
Temperature reaction 2.5h, vacuum defoamation 30min, obtain polyurethane prepolymer；
S5：To gained modified Nano carborundum in S3 is added in gained polyurethane prepolymer in S4, roll to well mixed,
In 13 weight portion Isosorbide-5-Nitraes-dihydroxy butane and 0.3 weight portion defoamer is rapidly added in 1.5min, it is sufficiently stirred for, extracts bubble out,
In curing molding at 85 DEG C, carborundum polyurethane elastic composite material is obtained.
Embodiment 2
In embodiment 2 in the preparation method of carborundum polyurethane elastic composite material, comprise the following steps：
S1：By γ-(second diaminourea) propyl trimethoxy silicane and double (the ethoxy silylpropyls of 3- tri-) tetrasulfides
With 1:1.9 weight, after 7h is reacted at 87 DEG C, is obtained silane coupler than mixing；
S2：To in adding 120 weight portion paraxylene, 38 weight portion silicon carbide micro-powders and 80 weight portion S1 in reaction vessel
Gained silane coupler, is warming up to 86 DEG C under stream of nitrogen gas, and the lower reaction 7h of stirring, reaction terminates rear vacuum filtration, surpasses through 3 times
Sound dispersion, centrifuge washing, obtain solid product；
S3：Solid product in S2 is dried into 9h in 108 DEG C of baking oven, modified Nano carborundum is obtained；
S4：40 weight portion polytetramethylene ether diols are dried into 2.8h under 106 DEG C of baking oven, 38 DEG C is cooled to, quickly
In adding 50 weight portions 4 in 3.5min under stirring, 4'- dicyclohexyl methyl hydride diisocyanates, under conditions of being 83 DEG C in temperature
Insulation reaction 2.5h, vacuum defoamation 30min, obtains polyurethane prepolymer；
S5：To gained modified Nano carborundum in S3 is added in gained polyurethane prepolymer in S4, roll to well mixed,
In 18 weight portion Isosorbide-5-Nitraes-dihydroxy butane and 0.5 weight portion defoamer is rapidly added in 2min, it is sufficiently stirred for, extracts bubble out, in
Curing molding at 85 DEG C, obtains carborundum polyurethane elastic composite material.
Embodiment 3
In embodiment 3 in the preparation method of carborundum polyurethane elastic composite material, comprise the following steps：
S1：By γ-(second diaminourea) propyl trimethoxy silicane and double (the ethoxy silylpropyls of 3- tri-) tetrasulfides
With 1:1.85 weight, after 7.5h is reacted at 86 DEG C, is obtained silane coupler than mixing；
S2：To in adding 140 weight portion paraxylene, 49 weight portion silicon carbide micro-powders and 90 weight portion S1 in reaction vessel
Gained silane coupler, is warming up to 87 DEG C under stream of nitrogen gas, and the lower reaction 7.5h of stirring reacts and terminates rear vacuum filtration, through 3 times
Ultrasonic disperse, centrifuge washing, obtain solid product；
S3：Solid product in S2 is dried into 9.5h in 109 DEG C of baking oven, modified Nano carborundum is obtained；
S4：45 weight portion polytetramethylene ether diols are dried into 2h under 108 DEG C of baking oven, 36.5 DEG C is cooled to, quickly
45 weight portions 4,4'- dicyclohexyl methyl hydride diisocyanates are added to be incubated under conditions of being 83 DEG C in temperature anti-under stirring in 3
2.5h, vacuum defoamation 30min are answered, polyurethane prepolymer is obtained；
S5：To gained modified Nano carborundum in S3 is added in gained polyurethane prepolymer in S4, roll to well mixed,
In 19 weight portion Isosorbide-5-Nitraes-dihydroxy butane and 0.35 weight portion defoamer is rapidly added in 2min, it is sufficiently stirred for, extracts bubble out, in
Curing molding at 85 DEG C, obtains carborundum polyurethane elastic composite material.
Carborundum polyurethane elastic composite material in embodiment 1~3 is prepared into the roll shaft for rice mill, is ground
Rice, observes its husking yield and broken rice rate, and the roll shaft prepared with common polyurethane material and carbofrax material is control, knot
It is really as shown in the table：
| Husking yield (%) | Broken rice rate (%) | |
| Embodiment 1 | 97.5 | 0.17 |
| Embodiment 2 | 97.8 | 0.12 |
| Embodiment 3 | 98.3 | 0.19 |
| Polyurethane | 87 | 0 |
| Carborundum | 99.1 | 12.2 |
From upper table analysis：Roll shaft is prepared by the carborundum polyurethane elastic composite material provided in embodiment 1~3
Shelling effect is much higher than polyurethanes roll shaft；Meanwhile, relative to carborundum class roll shaft, the carbon provided in embodiments of the invention
The situation that SiClx polyurethane elastic composite material class roll shaft is not cracked rice substantially.
Preferred embodiments of the present invention are the foregoing is only, embodiments of the present invention and protection model is not thereby limited
Enclose, to those skilled in the art, equally replacing done by all utilization present specifications should be can appreciate that
Change and obviously change resulting scheme, should be included in protection scope of the present invention.
Claims (4)
1. a kind of preparation method of carborundum polyurethane elastic composite material, it is characterised in that comprise the following steps：
S1：By γ-(second diaminourea) propyl trimethoxy silicane and double (the ethoxy silylpropyls of 3- tri-) tetrasulfides with 1:
1.5~2 weight, after 6~8h is reacted at 80~90 DEG C, is obtained silane coupler than mixing；
S2：To 100~150 weight portion paraxylene of addition, 30~50 weight portion silicon carbide micro-powders and 70~100 in reaction vessel
The gained silane coupler in weight portion S1, is warming up to 85~89 DEG C, stirring 6~8h of lower reaction, reaction under stream of nitrogen gas
Vacuum filtration after end, through repeated ultrasonic dispersion, centrifuge washing, obtains solid product；
S3：Solid product described in S2 is dried into 8~10h in 105~110 DEG C of baking oven, modified Nano carborundum is obtained；
S4：30~50 weight portion polytetramethylene ether diols are dried into 2~3h under 100~110 DEG C of baking oven, it is cooled to 35~
39 DEG C, in 40~55 weight portions 4 of addition, 4'- dicyclohexyl methyl hydride diisocyanates, in temperature in 3~5min under quick stirring
It is insulation reaction 2.5h under conditions of 80~85 DEG C, vacuum defoamation 30min, obtains polyurethane prepolymer；
S5：To the gained modified Nano carborundum in addition S3 in the gained polyurethane prepolymer in S4, roll to mixing
Uniformly, in 10~20 weight portion Isosorbide-5-Nitraes-dihydroxy butane and 0.2~1 weight portion defoamer is rapidly added in 1~3min, fully stir
Mix, extract bubble out, in curing molding at 85 DEG C, obtain carborundum polyurethane elastic composite material.
2. preparation method according to claim 1, it is characterised in that polyurethane prepolymer and modified Nano carbon in the S5
The mass fraction of modified Nano carborundum described in the mixture of SiClx is 15~30%.
3. a kind of carborundum polyurethane elastic composite material, it is characterised in that the system as any one of claim 1 or 2
Preparation Method is prepared.
4. a kind of roll shaft for grinding burnishing device processed, it is characterised in that as the carborundum elastic polyurethane described in claim 3
Composite is prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103246.5A CN106832199A (en) | 2017-02-24 | 2017-02-24 | A kind of carborundum polyurethane elastic composite material and preparation method thereof and its roll shaft for using |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103246.5A CN106832199A (en) | 2017-02-24 | 2017-02-24 | A kind of carborundum polyurethane elastic composite material and preparation method thereof and its roll shaft for using |
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| CN106832199A true CN106832199A (en) | 2017-06-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115850642A (en) * | 2022-12-05 | 2023-03-28 | 宁波聚泰新材料科技有限公司 | Preparation method of high-performance polyurethane elastomer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102791787A (en) * | 2009-12-18 | 2012-11-21 | 拜耳知识产权有限责任公司 | Scratch-resistant, impact-resistant polycarbonate moulding compositions having good mechanical properties II |
| CN103709728A (en) * | 2013-12-18 | 2014-04-09 | 山东博润工业技术股份有限公司 | Polyurethane lining plate and preparation method thereof |
| CN104140666A (en) * | 2014-07-30 | 2014-11-12 | 东莞市吉鑫高分子科技有限公司 | High-abrasion-resistance transparent thermoplastic polyurethane elastomer for ball film and manufacturing method thereof |
| CN104262573A (en) * | 2014-09-28 | 2015-01-07 | 苏州市景荣科技有限公司 | Polyurethane sole material with high abrasion resistance and preparation method of polyurethane sole material |
| CN105884997A (en) * | 2014-12-09 | 2016-08-24 | 任海涛 | Production technique of silicon carbide-polyurethane elastic composite material |
-
2017
- 2017-02-24 CN CN201710103246.5A patent/CN106832199A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102791787A (en) * | 2009-12-18 | 2012-11-21 | 拜耳知识产权有限责任公司 | Scratch-resistant, impact-resistant polycarbonate moulding compositions having good mechanical properties II |
| CN103709728A (en) * | 2013-12-18 | 2014-04-09 | 山东博润工业技术股份有限公司 | Polyurethane lining plate and preparation method thereof |
| CN104140666A (en) * | 2014-07-30 | 2014-11-12 | 东莞市吉鑫高分子科技有限公司 | High-abrasion-resistance transparent thermoplastic polyurethane elastomer for ball film and manufacturing method thereof |
| CN104262573A (en) * | 2014-09-28 | 2015-01-07 | 苏州市景荣科技有限公司 | Polyurethane sole material with high abrasion resistance and preparation method of polyurethane sole material |
| CN105884997A (en) * | 2014-12-09 | 2016-08-24 | 任海涛 | Production technique of silicon carbide-polyurethane elastic composite material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115850642A (en) * | 2022-12-05 | 2023-03-28 | 宁波聚泰新材料科技有限公司 | Preparation method of high-performance polyurethane elastomer |
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