CN106589913A - Heat-resisting and acid-base-resisting polyurethane plate and preparation method thereof - Google Patents
Heat-resisting and acid-base-resisting polyurethane plate and preparation method thereof Download PDFInfo
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
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- 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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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/40—High-molecular-weight compounds
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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- C08J9/103—Azodicarbonamide
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/104—Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
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- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
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Abstract
The invention discloses a heat-resisting and acid-base-resisting polyurethane plate. The heat-resisting and acid-base-resisting polyurethane plate comprises the raw materials of polyether polyol, modified prepolymers, hydroxyl-terminated polybutadiene, styrene-acrylic emulsion, acrylic esters, diphenol propane, dimethylbenzene, talcum powder, light calcium carbonate, precipitated barium sulphate, aluminum oxide, graphite, cotton fiber, nano calcium carbonate, nano titanium dioxide, zinc oxide, carbon cellulose, a silane coupler KH-560, vinyl trimethoxy silane, sodium potassium tartrate, curing agents, crosslinking agents, foaming agents and copper sheets. The invention further provides a preparation method for the heat-resisting and acid-base-resisting polyurethane plate. The polyurethane plate prepared through the preparation method has excellent heat-resisting and acid-base-resisting performance.
Description
Technical field
The present invention relates to polyurethane material field, more particularly to a kind of thermal resistance and acid-alkali resistance polyurethane sheet and preparation method thereof.
Background technology
Polyurethane refers to the big class polymer containing more carbamate groups feature structure on molecular backbone, is
A kind of macromolecular material between plastics and rubber, its percentage elongation is big, hardness range width, and formula adjustment scope is big, tool
There is excellent wearability and mechanical property.And casting type polyurethane elastomer, be in the big processing type of polyurethane elastomer three most
Important one kind, its consumption accounts for the 6o% of PUR amounts, and there is chemical constitution diversification, viscosity easily to adjust for it, processing technique is excellent,
The advantages of easily putting into industrialized production, easy to use and quick solidifying, therefore be very suitable for making complex large-scale component.Polyurethane
Abrasion-proof backing block is exactly to be formed using casting type polyurethane elastomer technology mode production and processing.Polyurethane is to contain in macromolecular chain
The one of urethane type constitutional repeating unit birdss of the same feather flock together compound, and full name is polyamino acid ester, and PU is by polyisocyanates and polyether-type or poly-
The product that ester type polyhydric alcohol reflects under certain proportion.
Polyurethane sheet is referred to be made up completely of PU, or the polyurethane laminboard being compounded to form by PU and color steel, mainly
For industry, civil buildings outer heat preservation system, the most popular product systems of PU are become at present.
Demand when the thermal resistance and acid-alkali resistance performance of polyurethane sheet of the prior art cannot meet actually used, therefore need badly
Design a kind of thermal resistance and acid-alkali resistance polyurethane sheet to solve the problems of the prior art.
The content of the invention
To solve technical problem present in background technology, the present invention proposes a kind of thermal resistance and acid-alkali resistance polyurethane sheet and its system
Preparation Method, the polyurethane sheet for preparing has excellent thermal resistance and acid-alkali resistance performance.
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：Polyether polyol 80-
120 parts, modified prepolymers 15-25 part, end hydroxy butadiene 3-6 parts, styrene-acrylic emulsion 5-15 parts, acrylate 10-30 parts, two
Phenolic group propane 5-15 parts, dimethylbenzene 2-8 parts, Pulvis Talci 3-9 parts, precipitated calcium carbonate 4-9 parts, blanc fixe 2-8 parts, aluminium oxide
1-5 parts, graphite 2-6 parts, cotton fiber 3-4 parts, nano-calcium carbonate 4-9 parts, nano titanium oxide 1-3 parts, Zinc Oxide 2-6 part, carbon
It is cellulose 2-5 parts, silane coupler KH-560 1-3 parts, vinyltrimethoxy silane 4-7 parts, sodium potassium tartrate tetrahydrate 2-6 parts, solid
Agent 1-9 part, cross-linking agent 3-6 parts, foaming agent 2-6 parts, copper sheet 10-20 parts.
Preferably, modified prepolymers are prepared by following technique：By toluene di-isocyanate(TDI), trimethylolpropane, two
Toluene, Oleum Gossypii semen and pentanediol mix homogeneously, then stir 1-3h in 120-180r/min rotating speeds, are then warming up to 85-95 DEG C,
Insulation 1-3h, is then cooled to 45-55 DEG C of discharging, is cooled to room temperature and obtains modified prepolymers.
Preferably, in the preparation technology of modified prepolymers, toluene di-isocyanate(TDI), trimethylolpropane, dimethylbenzene, Semen Gossypii
The weight ratio of oil and pentanediol is 1-5：2-3：1-3：3-6：4-6.
Preferably, foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH 1-3 by weight：2-4：3-5 mix and
Into.
Preferably, its raw material includes by weight：Polyether polyol 85-115 part, modified prepolymers 18-22 part, terminal hydroxy group
Polybutadiene 4-5 parts, styrene-acrylic emulsion 8-12 parts, acrylate 15-25 parts, diphenol propane 8-12 parts, dimethylbenzene 3-7 parts, cunning
Stone powder 4-8 parts, precipitated calcium carbonate 5-8 parts, blanc fixe 3-7 parts, aluminium oxide 2-4 parts, graphite 3-5 parts, cotton fiber 3.2-3.8
Part, nano-calcium carbonate 5-8 parts, nano titanium oxide 1.5-2.5 parts, Zinc Oxide 3-5 part, carbon cellulose 3-4 parts, silane coupler
KH-560 1.5-2.5 parts, vinyltrimethoxy silane 5-6 parts, sodium potassium tartrate tetrahydrate 3-5 parts, firming agent 2-8 parts, cross-linking agent 4-
5 parts, foaming agent 3-5 parts, copper sheet 12-18 parts.
Preferably, its raw material includes by weight：100 parts of polyether polyol, 20 parts of modified prepolymers, terminal hydroxy group polybutadiene
4.5 parts of alkene, 10 parts of styrene-acrylic emulsion, 20 parts of acrylate, 10 parts of diphenol propane, 5 parts of dimethylbenzene, 6 parts of Pulvis Talci, lightweight carbonic acid
6.5 parts of calcium, 5 parts of blanc fixe, 3 parts of aluminium oxide, 4 parts of graphite, 3.5 parts of cotton fiber, 6.5 parts of nano-calcium carbonate, nano-silica
Change 2 parts of titanium, 4 parts of Zinc Oxide, 3.5 parts of carbon cellulose, 2 parts of silane coupler KH-560,5.5 parts of vinyltrimethoxy silane,
4 parts of sodium potassium tartrate tetrahydrate, 5 parts of firming agent, 4.5 parts of cross-linking agent, 4 parts of foaming agent, 15 parts of copper sheet.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Add acrylate, be stirring evenly and then adding into water mixing, then pour into immediately it is compressing in 80-140 DEG C of insulation in mould, it is quiet
20-40min is put, 120-140 DEG C of ripening 5-8h in baking oven is put into, surface is covered with copper sheet after the demoulding, copper sheet surface-pressure, room temperature is quiet
4-6h is put, room temperature is cooled to and is obtained thermal resistance and acid-alkali resistance polyurethane sheet.
A kind of thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, its raw material includes polyether polyol, modified prepolymers, terminal hydroxy group
Polybutadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, blanc fixe, oxygen
Change aluminum, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler KH-560, second
Thiazolinyl trimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent, foaming agent and copper sheet.Wherein with polyether polyol as base
Material, supplements material, with end hydroxy butadiene, polyether polyol, styrene-acrylic emulsion, acrylic acid using modified prepolymers as base material
Ester, diphenol propane, dimethylbenzene, silane coupler KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, friendship
Join agent and foaming agent as auxiliary agent, with Pulvis Talci, precipitated calcium carbonate, blanc fixe, aluminium oxide, graphite, cotton fiber, nano-sized carbon
Sour calcium, nano titanium oxide, Zinc Oxide and carbon cellulose as filler, by the use of the silane coupler KH-560 in auxiliary agent as changing
Property agent, by using the hydroxyl on filler surface, filler is effectively combined with major ingredient, give polyurethane sheet of the present invention excellent
Thermal resistance and acid-alkali resistance performance.The modified prepolymers of addition with toluene di-isocyanate(TDI), trimethylolpropane, dimethylbenzene, Oleum Gossypii semen and
Pentanediol is raw material, and the modified prepolymers obtained using Oleum Gossypii semen modified toluene diisocyanate and trimethylolpropane are applied to
In the preparation of the polyurethane sheet of the present invention, the acid-proof alkaline of polyurethane sheet of the present invention is effectively increased.Preparation process of the present invention
In, after mould is compressing, copper sheet being covered with Jing after high-temperature maturing after raw material hybrid reaction, the polyurethane sheet for obtaining has
Excellent heat-resisting and acid-proof alkaline.The preparation method of the present invention is simple, and the polyurethane sheet for preparing has excellent heat-resisting
Acid-proof alkaline.
Specific embodiment
The present invention is described in detail with reference to specific embodiment, it should be appreciated that embodiment is served only for illustrating this
It is bright, rather than for limiting the invention, any modification made on the basis of the present invention, equivalent etc. are at this
In bright protection domain.
In specific embodiment, the weight portion of polyether polyol can for 80 parts, 85 parts, 90 parts, 95 parts, 100 parts, 105
Part, 110 parts, 115 parts, 120 parts；The weight portion of modified prepolymers can for 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts, 21
Part, 22 parts, 23 parts, 24 parts, 25 parts；The weight portion of end hydroxy butadiene can for 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts,
5.5 parts, 6 parts；The weight portion of styrene-acrylic emulsion can for 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts,
15 parts；The weight portion of acrylate can be 10 parts, 15 parts, 20 parts, 25 parts, 30 parts；The weight portion of diphenol propane can be 5
Part, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts；The weight portion of dimethylbenzene can for 2 parts, 3 parts,
4 parts, 5 parts, 6 parts, 7 parts, 8 parts；Talcous weight portion can be 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts；Lightweight carbonic acid
The weight portion of calcium can be 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts；Precipitated sulfur
The weight portion of sour barium can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts；The weight portion of aluminium oxide can for 1 part, 2 parts, 3
Part, 4 parts, 5 parts；The weight portion of graphite can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts；The weight portion of cotton fiber can for 3 parts, 3.1
Part, 3.2 parts, 3.3 parts, 3.4 parts, 3.5 parts, 3.6 parts, 3.7 parts, 3.8 parts, 3.9 parts, 4 parts；The weight portion of nano-calcium carbonate can be with
For 4 parts, 4.5 parts, 5 parts, 5.5 parts, 6 parts, 6.5 parts, 7 parts, 7.5 parts, 8 parts, 8.5 parts, 9 parts；The weight portion of nano titanium oxide
It can be 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts；The weight portion of Zinc Oxide can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts；Carbon fiber
The weight portion of element can be 2 parts, 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, 5 parts；The weight portion of silane coupler KH-560 can
Think 1 part, 1.5 parts, 2 parts, 2.5 parts, 3 parts；The weight portion of vinyltrimethoxy silane can for 4 parts, 4.5 parts, 5 parts, 5.5
Part, 6 parts, 6.5 parts, 7 parts；The weight portion of sodium potassium tartrate tetrahydrate can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts；The weight portion of firming agent can
Think 1 part, 2 parts, 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts；The weight portion of cross-linking agent can for 3 parts, 3.5 parts, 4 parts, 4.5
Part, 5 parts, 5.5 parts, 6 parts；The weight portion of foaming agent can be 2 parts, 3 parts, 4 parts, 5 parts, 6 parts；The weight portion of copper sheet can be 10
Part, 11 parts, 12 parts, 13 parts, 14 parts, 15 parts, 16 parts, 17 parts, 18 parts, 19 parts, 20 parts.
Embodiment 1
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：Polyether polyol 100
Part, 20 parts of modified prepolymers, 4.5 parts of end hydroxy butadiene, 10 parts of styrene-acrylic emulsion, 20 parts of acrylate, diphenol propane 10
Part, 5 parts of dimethylbenzene, 6 parts of Pulvis Talci, 6.5 parts of precipitated calcium carbonate, 5 parts of blanc fixe, 3 parts of aluminium oxide, 4 parts of graphite, cotton fiber
3.5 parts, 6.5 parts of nano-calcium carbonate, 2 parts of nano titanium oxide, 4 parts of Zinc Oxide, 3.5 parts of carbon cellulose, silane coupler KH-
560 2 parts, 5.5 parts of vinyltrimethoxy silane, 4 parts of sodium potassium tartrate tetrahydrate, 5 parts of firming agent, 4.5 parts of cross-linking agent, foaming agent 4
Part, 15 parts of copper sheet.
Modified prepolymers are prepared by following technique：By weight by 3 parts of toluene di-isocyanate(TDI)s, 2.5 part of three hydroxyl first
Base propane, 2 parts of dimethylbenzene, 4.5 portions of Oleum Gossypii semens and 5 parts of pentanediol mix homogeneously, then stir 2h, then in 150r/min rotating speeds
90 DEG C are warming up to, 2h is incubated, 50 DEG C of dischargings are then cooled to, room temperature are cooled to and are obtained modified prepolymers.
Foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH by weight 2：3：4 mix.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Acrylate is added, water mixing is stirring evenly and then adding into, compressing in 110 DEG C of insulations in mould, standing is then poured into immediately
30min, is put into 130 DEG C of ripening 6.5h in baking oven, and surface is covered with copper sheet, copper sheet surface-pressure after the demoulding, and room temperature stands 5h, cooling
Thermal resistance and acid-alkali resistance polyurethane sheet is obtained to room temperature.
Embodiment 2
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：80 parts of polyether polyol,
25 parts of modified prepolymers, 3 parts of end hydroxy butadiene, 5 parts of styrene-acrylic emulsion, 30 parts of acrylate, 5 parts of diphenol propane, diformazan
8 parts of benzene, 3 parts of Pulvis Talci, 9 parts of precipitated calcium carbonate, 2 parts of blanc fixe, 5 parts of aluminium oxide, 2 parts of graphite, cotton fiber 4 part, nanometer
4 parts of Calcium Carbonate, 3 parts of nano titanium oxide, 2 parts of Zinc Oxide, 5 parts of carbon cellulose, 1 part of silane coupler KH-560, vinyl three
7 parts of methoxy silane, 2 parts of sodium potassium tartrate tetrahydrate, 9 parts of firming agent, 3 parts of cross-linking agent, 6 parts of foaming agent, 10 parts of copper sheet.
Modified prepolymers are prepared by following technique：By weight by 1 part of toluene di-isocyanate(TDI), 3 parts of trihydroxy methyls
Propane, 1 part of dimethylbenzene, 6 portions of Oleum Gossypii semens and 4 parts of pentanediol mix homogeneously, then stir 1h in 180r/min rotating speeds, then heat up
To 95 DEG C, 1h is incubated, is then cooled to 55 DEG C of dischargings, be cooled to room temperature and obtain modified prepolymers.
Foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH by weight 1：4：3 mix.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Acrylate is added, water mixing is stirring evenly and then adding into, compressing in 80 DEG C of insulations in mould, standing is then poured into immediately
40min, is put into 120 DEG C of ripening 8h in baking oven, and surface is covered with copper sheet after the demoulding, and copper sheet surface-pressure, room temperature stands 4h, is cooled to
Room temperature obtains thermal resistance and acid-alkali resistance polyurethane sheet.
Embodiment 3
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：Polyether polyol 120
Part, 15 parts of modified prepolymers, 6 parts of end hydroxy butadiene, 15 parts of styrene-acrylic emulsion, 10 parts of acrylate, 15 parts of diphenol propane,
2 parts of dimethylbenzene, 9 parts of Pulvis Talci, 4 parts of precipitated calcium carbonate, 8 parts of blanc fixe, 1 part of aluminium oxide, 6 parts of graphite, 3 parts of cotton fiber,
9 parts of nano-calcium carbonate, 1 part of nano titanium oxide, 6 parts of Zinc Oxide, 2 parts of carbon cellulose, 3 parts of silane coupler KH-560, ethylene
4 parts of base trimethoxy silane, 6 parts of sodium potassium tartrate tetrahydrate, 1 part of firming agent, 6 parts of cross-linking agent, 2 parts of foaming agent, 20 parts of copper sheet.
Modified prepolymers are prepared by following technique：By weight by 5 parts of toluene di-isocyanate(TDI)s, 2 parts of trihydroxy methyls
Propane, 3 parts of dimethylbenzene, 3 portions of Oleum Gossypii semens and 6 parts of pentanediol mix homogeneously, then stir 3h in 120r/min rotating speeds, then heat up
To 85 DEG C, 3h is incubated, is then cooled to 45 DEG C of dischargings, be cooled to room temperature and obtain modified prepolymers.
Foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH by weight 3：2：5 mix.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Acrylate is added, water mixing is stirring evenly and then adding into, compressing in 140 DEG C of insulations in mould, standing is then poured into immediately
20min, is put into 140 DEG C of ripening 5h in baking oven, and surface is covered with copper sheet after the demoulding, and copper sheet surface-pressure, room temperature stands 6h, is cooled to
Room temperature obtains thermal resistance and acid-alkali resistance polyurethane sheet.
Embodiment 4
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：85 parts of polyether polyol,
22 parts of modified prepolymers, 4 parts of end hydroxy butadiene, 8 parts of styrene-acrylic emulsion, 25 parts of acrylate, 8 parts of diphenol propane, diformazan
7 parts of benzene, 4 parts of Pulvis Talci, 8 parts of precipitated calcium carbonate, 3 parts of blanc fixe, 4 parts of aluminium oxide, 3 parts of graphite, 3.8 parts of cotton fiber, receive
5 parts of Calcium Carbonate of rice, 2.5 parts of nano titanium oxide, 3 parts of Zinc Oxide, 4 parts of carbon cellulose, 1.5 parts of silane coupler KH-560, second
6 parts of thiazolinyl trimethoxy silane, 3 parts of sodium potassium tartrate tetrahydrate, 8 parts of firming agent, 4 parts of cross-linking agent, 5 parts of foaming agent, 12 parts of copper sheet.
Modified prepolymers are prepared by following technique：By weight by 2 parts of toluene di-isocyanate(TDI)s, 2.8 part of three hydroxyl first
Base propane, 1.5 parts of dimethylbenzene, 5 portions of Oleum Gossypii semens and 4.5 parts of pentanediol mix homogeneously, then stir 1.5h in 175r/min rotating speeds,
Then 92 DEG C are warming up to, 1.5h is incubated, 52 DEG C of dischargings are then cooled to, room temperature are cooled to and are obtained modified prepolymers.
Foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH by weight 1.5：3.5：3.5 mix.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Acrylate is added, water mixing is stirring evenly and then adding into, compressing in 85 DEG C of insulations in mould, standing is then poured into immediately
35min, is put into 125 DEG C of ripening 7h in baking oven, and surface is covered with copper sheet, copper sheet surface-pressure after the demoulding, and room temperature stands 4.5h, cooling
Thermal resistance and acid-alkali resistance polyurethane sheet is obtained to room temperature.
Embodiment 5
A kind of thermal resistance and acid-alkali resistance polyurethane sheet proposed by the present invention, its raw material includes by weight：Polyether polyol 115
Part, 18 parts of modified prepolymers, 5 parts of end hydroxy butadiene, 12 parts of styrene-acrylic emulsion, 15 parts of acrylate, 12 parts of diphenol propane,
3 parts of dimethylbenzene, 8 parts of Pulvis Talci, 5 parts of precipitated calcium carbonate, 7 parts of blanc fixe, 2 parts of aluminium oxide, 5 parts of graphite, cotton fiber 3.2
Part, 8 parts of nano-calcium carbonate, 1.5 parts of nano titanium oxide, 5 parts of Zinc Oxide, 3 parts of carbon cellulose, silane coupler KH-560 2.5
Part, 5 parts of vinyltrimethoxy silane, 5 parts of sodium potassium tartrate tetrahydrate, 2 parts of firming agent, 5 parts of cross-linking agent, 3 parts of foaming agent, copper sheet 18
Part.
Modified prepolymers are prepared by following technique：By weight by 4 parts of toluene di-isocyanate(TDI)s, 2.2 part of three hydroxyl first
Base propane, 2.5 parts of dimethylbenzene, 4 portions of Oleum Gossypii semens and 5.5 parts of pentanediol mix homogeneously, then stir 2.5h in 125r/min rotating speeds,
Then 88 DEG C are warming up to, 2.5h is incubated, 48 DEG C of dischargings are then cooled to, room temperature are cooled to and are obtained modified prepolymers.
Foaming agent is by blowing agent AC, foaming agent DAB and foaming agent BSH by weight 2.5：2.5：4.5 mix.
A kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet of the present invention, including：By polyether polyol, modified pre-polymerization
Thing, end hydroxy butadiene, styrene-acrylic emulsion, acrylate, diphenol propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, precipitation
Barium sulfate, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nano titanium oxide, Zinc Oxide, carbon cellulose, silane coupler
KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, firming agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, then
Acrylate is added, water mixing is stirring evenly and then adding into, compressing in 135 DEG C of insulations in mould, standing is then poured into immediately
25min, is put into 135 DEG C of ripening 6h in baking oven, and surface is covered with copper sheet, copper sheet surface-pressure after the demoulding, and room temperature stands 5.5h, cooling
Thermal resistance and acid-alkali resistance polyurethane sheet is obtained to room temperature.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (7)
1. a kind of thermal resistance and acid-alkali resistance polyurethane sheet, it is characterised in that its raw material includes by weight：Polyether polyol 80-120
Part, modified prepolymers 15-25 part, end hydroxy butadiene 3-6 parts, styrene-acrylic emulsion 5-15 parts, acrylate 10-30 parts, diphenol
Base propane 5-15 parts, dimethylbenzene 2-8 parts, Pulvis Talci 3-9 parts, precipitated calcium carbonate 4-9 parts, blanc fixe 2-8 parts, aluminium oxide 1-
5 parts, graphite 2-6 parts, cotton fiber 3-4 parts, nano-calcium carbonate 4-9 parts, nano titanium oxide 1-3 parts, Zinc Oxide 2-6 part, carbon it is fine
Dimension element 2-5 parts, silane coupler KH-560 1-3 parts, vinyltrimethoxy silane 4-7 parts, sodium potassium tartrate tetrahydrate 2-6 parts, solidification
Agent 1-9 parts, cross-linking agent 3-6 parts, foaming agent 2-6 parts, copper sheet 10-20 parts.
2. thermal resistance and acid-alkali resistance polyurethane sheet according to claim 1, it is characterised in that modified prepolymers are entered by following technique
It is prepared by row：By toluene di-isocyanate(TDI), trimethylolpropane, dimethylbenzene, Oleum Gossypii semen and pentanediol mix homogeneously, then in 120-
180r/min rotating speeds stir 1-3h, are then warming up to 85-95 DEG C, are incubated 1-3h, are then cooled to 45-55 DEG C of discharging, are cooled to
Room temperature obtains modified prepolymers.
3. thermal resistance and acid-alkali resistance polyurethane sheet according to claim 1 and 2, it is characterised in that the preparation work of modified prepolymers
In skill, the weight ratio of toluene di-isocyanate(TDI), trimethylolpropane, dimethylbenzene, Oleum Gossypii semen and pentanediol is 1-5：2-3：1-3：
3-6：4-6.
4. the thermal resistance and acid-alkali resistance polyurethane sheet according to any one of claim 1-3, it is characterised in that foaming agent is by foaming agent
AC, foaming agent DAB and foaming agent BSH are by weight 1-3：2-4：3-5 is mixed.
5. the thermal resistance and acid-alkali resistance polyurethane sheet according to any one of claim 1-4, it is characterised in that its raw material is by weight
Including：Polyether polyol 85-115 part, modified prepolymers 18-22 part, end hydroxy butadiene 4-5 parts, styrene-acrylic emulsion 8-12 parts,
Acrylate 15-25 parts, diphenol propane 8-12 parts, dimethylbenzene 3-7 parts, Pulvis Talci 4-8 parts, precipitated calcium carbonate 5-8 parts, precipitation
Barium sulfate 3-7 parts, aluminium oxide 2-4 parts, graphite 3-5 parts, cotton fiber 3.2-3.8 parts, nano-calcium carbonate 5-8 parts, nanometer titanium dioxide
Titanium 1.5-2.5 parts, Zinc Oxide 3-5 part, carbon cellulose 3-4 parts, silane coupler KH-560 1.5-2.5 parts, vinyl trimethoxy
Base silane 5-6 parts, sodium potassium tartrate tetrahydrate 3-5 parts, firming agent 2-8 parts, cross-linking agent 4-5 parts, foaming agent 3-5 parts, copper sheet 12-18 parts.
6. the thermal resistance and acid-alkali resistance polyurethane sheet according to any one of claim 1-5, it is characterised in that its raw material is by weight
Including：100 parts of polyether polyol, 20 parts of modified prepolymers, 4.5 parts of end hydroxy butadiene, 10 parts of styrene-acrylic emulsion, acrylate
20 parts, 10 parts of diphenol propane, 5 parts of dimethylbenzene, 6 parts of Pulvis Talci, 6.5 parts of precipitated calcium carbonate, 5 parts of blanc fixe, aluminium oxide 3
Part, 4 parts of graphite, 3.5 parts of cotton fiber, 6.5 parts of nano-calcium carbonate, 2 parts of nano titanium oxide, 4 parts of Zinc Oxide, carbon cellulose 3.5
Part, 2 parts of silane coupler KH-560,5.5 parts of vinyltrimethoxy silane, 4 parts of sodium potassium tartrate tetrahydrate, 5 parts of firming agent, crosslinking
4.5 parts of agent, 4 parts of foaming agent, 15 parts of copper sheet.
7. a kind of preparation method of the thermal resistance and acid-alkali resistance polyurethane sheet according to any one of claim 1-6, it is characterised in that
Including：By polyether polyol, modified prepolymers, end hydroxy butadiene, polyether polyol, styrene-acrylic emulsion, acrylate, diphenol
Base propane, dimethylbenzene, Pulvis Talci, precipitated calcium carbonate, blanc fixe, aluminium oxide, graphite, cotton fiber, nano-calcium carbonate, nanometer
Titanium dioxide, Zinc Oxide, carbon cellulose, silane coupler KH-560, vinyltrimethoxy silane, sodium potassium tartrate tetrahydrate, solidification
Agent, cross-linking agent and foaming agent are sufficiently stirred for, mix, and are subsequently adding acrylate, are stirring evenly and then adding into water mixing, immediately then
Pour compressing in 80-140 DEG C of insulation in mould, standing 20-40min into, be put into 120-140 DEG C of ripening 5-8h in baking oven, take off
Surface is covered with copper sheet after mould, and copper sheet surface-pressure, room temperature stands 4-6h, is cooled to room temperature and obtains thermal resistance and acid-alkali resistance polyurethane sheet.
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| CN201611247896.9A CN106589913A (en) | 2016-12-29 | 2016-12-29 | Heat-resisting and acid-base-resisting polyurethane plate and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109054357A (en) * | 2018-07-06 | 2018-12-21 | 东莞市汉品电子有限公司 | A kind of production method of no silicon heat-conducting pad |
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