CN103739807A - Polyurethane hard plastic foam composition - Google Patents
Polyurethane hard plastic foam composition Download PDFInfo
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- CN103739807A CN103739807A CN201310710236.XA CN201310710236A CN103739807A CN 103739807 A CN103739807 A CN 103739807A CN 201310710236 A CN201310710236 A CN 201310710236A CN 103739807 A CN103739807 A CN 103739807A
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- polyurethane hard
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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
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- 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
- C08G18/16—Catalysts
- C08G18/161—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22
- C08G18/163—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22 covered by C08G18/18 and C08G18/22
- C08G18/165—Catalysts containing two or more components to be covered by at least two of the groups C08G18/166, C08G18/18 or C08G18/22 covered by C08G18/18 and C08G18/22 covered by C08G18/18 and C08G18/24
-
- 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
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1808—Catalysts containing secondary or tertiary amines or salts thereof having alkylene polyamine groups
-
- 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
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/242—Catalysts containing metal compounds of tin organometallic compounds containing tin-carbon bonds
-
- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
-
- 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
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of the polyurethane foam hard plastics, and more specifically relates to a polyurethane hard plastic foam composition. The polyurethane hard plastic foam composition provided by the invention is composed of the following main raw materials in parts by weight: 75-90 parts of combined polyether, 2-5 parts of dimethyl ether, 2-5 parts of glass fibers, 4-10 parts of mullite and 2-5 parts of silicon carbide fine powder. The polyurethane hard plastic foam composition is capable of overcoming the shortcoming of poor mechanical properties of the existing polyurethane hard foam plastic, and has excellent strength and tenacity in addition to the previous properties such as high temperature resistance and fire resistance.
Description
Technical field
The present invention relates to polyurethane foam duroplasts technical field, more particularly relate to a kind of rigid polyurethane foams foaming composition.
Background technology
Polyurethane rigid foam plastic has the premium propertiess such as light weight, insulation, cold-resistant resistance to solvent, sound-absorbing and buffering antidetonation, be widely used in the thermal insulation material of the casing insulation thermospheres such as refrigerator, refrigerator-freezer, freezer, refrigerator car, buildings, storage tank and pipe insulation material, on a small quantity for nonadiabatic occasion, as the timber of walking back and forth, wrapping material etc., but because its mechanical property is poor, do not reach the service requirements of structured material.
As structured material, require to have certain intensity, rigidity and toughness etc.For improving polyurethane rigid foam plastic mechanical property, conventional method is improve density of material or add toughener, and wherein toughener has become one of focus of current research on the impact of polyurethane rigid foam plastic mechanical property.The toughener of having reported has mineral filler and fortifying fibre, and organic filler is mainly silicon-dioxide, calcium carbonate and double glazing particulate etc., and fortifying fibre is mainly glass fibre, organic fibre and carbon fiber etc.
Mullite is that a series of mineral that are comprised of aluminosilicate are referred to as, and because being found at first Mo Laidao, gains the name, and it seldom exists at occurring in nature, mainly adopts aluminosilicate at high temperature to carry out synthetic, and its main component is 3Al
2o
32SiO
2or 2 Al
2o
3siO
2.Mullite is mainly used in making high-performance ceramic, fire-resistant, high temperature resistant, Electronic Packaging and optical material etc. now, also can meet with other material and become the matrix material of superior performance.
Chinese patent (application number: 201210427347.5) disclose a kind of friction material composition for ceramic brake, it is mainly made by following compositions in weight percentage: Mullite Ceramic Fibres 14-18%, glue spraying aluminum silicate fiber 10-13%, aramid pulp 10-12%, red copper fiber 8-9%, potassium titanate crystal whisker 8-10%, nano-sized iron oxide 3-5%, aluminium hydroxide 0.8-1%, barite 7-12%, potassium felspar sand 8-10%, chromite 3-5%, magnesium hydroxide 1-1.5%, zinc oxide 0.2-0.5%, graphite granule 7-11%, expanded graphite 6-9%, paracril 1-2%, cashew nut oil modified alkyd resin 6-10%.Mullite Ceramic Fibres in this invention is a kind of fibrous light refractory materials, there is lightweight, high temperature resistant, Heat stability is good, thermal conductivity is low, specific heat is little and the advantage such as resistance to mechanical shock, after reasonably combined with other materials, brake facing surface hardness, frictional coefficient have effectively been improved, also heat transfer property and processing characteristics have been improved, with respect to existing ceramic brake, machinery and braking ability during this brake facing high temperature are better.
Chinese patent (application number: 200710131655.2) disclose a kind of abrasion-proof fire-resistant moldable refractory, it is by 60-80wt% corundum and/or mullite and/or Al2O3 >=80% bauxite clinker, 5-10wt%≤4 μ m alumina powder, 6-15wt%≤0.025mm chromium corundum fine powder, 2-6wt%≤1 μ m silicon powder, 5-10w% kyanite or andaluzite or sillimanite form, additional 12-15wt% dihydro aluminum phosphate or Tai-Ace S 150 bonding agent, and 0.5-3wt% calcium aluminate or luminite cement setting accelerator.Compared with prior art, it is high that this abrasion-proof fire-resistant moldable refractory has density, and compressive strength is high, and wear resisting property is good, and slag resistance and corrosion resistance are strong, uses temperature high, greatly extended work-ing life, can meet requirements at the higher level and use.
Yet, in the available data retrieving, still do not have a kind of scheme that material mullite is applied in polyurethane rigid foam plastic preparation field, by the rational proportion of each component of composition, make the polyurethane rigid foam plastic with superperformance.
Summary of the invention
For the deficiencies in the prior art, the present invention aims to provide the plastic foamed composition of a kind of improved rigid polyurethane, can overcome the shortcoming of existing polyurethane rigid foam plastic poor mechanical property, outside guaranteeing original performance such as high temperature resistant, fire-resistant, also there is good strength and toughness.
Main raw material and the parts by weight of the plastic foamed composition of rigid polyurethane of the present invention are:
75～90 parts of combined polyethers;
2～5 parts of dme;
2～5 parts, glass fibre;
4～10 parts of mullites;
2～5 parts of carbide fine powder.
The above combined polyether adopts the main raw material of following parts by weight to be mixed:
5～7 parts of glycerin polyether resins;
3～5 parts of glycol ether resins;
0.2～0.3 part of water-soluble silicon oil;
0.2～0.4 part of pentamethyl-diethylenetriamine;
0.1～0.3 part of dibutyl tin laurate;
2～4 parts of deionized waters.
The all raw materials of above-mentioned foaming composition are put into container for stirring even, can obtain polyurethane rigid foam combined polyether, by this combined polyether and isocyanate reaction, can react and obtain polyurethane rigid foam plastic.Wherein, isocyanic ester mainly contains tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), polymethine polyphenyl polyisocyanate (PAPI) etc. and does on a small quantity other aliphatics and the aromatic organic isocyanate of special purpose.
Above-mentioned reaction adopts CO
2for whipping agent, or the CO that utilizes isocyanic ester and water reaction to produce
2(water foaming) as whipping agent, have advantages of nontoxic, safe, there is not recycling problem and do not need invest in the transformation of real estate foaming machine, be a kind of more satisfactory whipping agent at present.
Dme (DME) is a kind of colourless gas or compressed liquid at normal temperatures and pressures, has inertia, non-corrosiveness, non-carcinogenesis, also has good compatibility, soluble in water, can be miscible with most of polarity and non-polar organic solvent; Boiling point is low, inflammable, but after mixing with water, can obtain the characteristic of high boiling point and incombustible; Stable chemical nature, can standing storage and do not decompose or transform, and the life-span in atmospheric layer is very short, about approximately 10 days, can be degraded to carbonic acid gas and water, and ODP value is 0, thereby can not cause environmental pollution and damage the ozone layer.Due to water in prior art during as whipping agent, there is the defect that foamy body is low in polyurethane hard foam, Some Enterprises is by improving the consumption of isocyanate material or improving foam density and solve the problems referred to above, and this will cause production cost to raise, and hinders the popularization of full water foamed technology.The characteristic that dme can dissolve each other with water is easy to for full water foamed technology it, contributes to improve that full water foamed polyurethane hard foam intensity is low, poor stability, the poor defect of heat insulating ability, and can reduce isocyanic ester consumption; In addition, due to low viscosity and the characteristic of low surface tension of dme, for full water foamed system, can significantly reduce system viscosity, and improve each mixing property of component in system, the foaming thermal-insulating hole bubble of moulding is evenly distributed, heat-insulating property is stable; The mutual solubility of dme and polyether glycol is conducive to improve foaming efficiency and the dimensional stability of polyurethane hard foam simultaneously; Add that dme price is low, the wide advantage of originating, it can be used as frothing aid for the production of various polyurethane hard foams, and can effectively improve the use properties of polyurethane hard foam.
Glass fibre is a kind of ceramic of excellent performance, and it has advantages of good insulating, thermotolerance is strong, erosion resistance good, physical strength is high.It take glass sphere or discarded glass as raw material manufactures through high temperature melting, wire drawing, doff, the technique such as weave cotton cloth, and is typically used as the strongthener in matrix material, and its diameter is less, and intensity is higher.The glass fibre that the present invention adopts be glass fiber precursor obtain after by chopped strand and milled fiber step diameter between 3～7 microns, the beta glass fibre of length between 2～4 millimeters.After foaming raw material mixes, glass fibre can be distributed in the skeleton of cell wall, foam materials, plays the effect that strengthens hole wall and foam stiffness, and can not affect foam structure.
Mullite is a kind of refractory materials of high-quality, and it has the features such as expansion is even, thermal shock resistance is fabulous, load softening point is high, high temperature creep value is little, hardness is large, resistance to chemical corrosion is good.As the reinforcing filler of blown rigid plastics, can improve the mechanical property of plastics.
Silicon carbide is to be that raw material forms by resistance furnace pyrotic smelting with quartz sand, refinery coke (or coal tar), wood chip.It has high temperature resistant, the advantage such as intensity is large, heat conductivility is good, shock resistance.Material carbon SiClx fine powder particle diameter of the present invention is between 1～7 micron.
Compared with prior art, the plastic foamed composition of rigid polyurethane of the present invention, adopts mullite as reinforcing filler, can overcome the shortcoming of existing polyurethane rigid foam plastic poor mechanical property, outside guaranteeing original performance such as high temperature resistant, fire-resistant, also there is good strength and toughness.And owing to adopting the whipping agent CO that ODP value is 0
2, avoided the harm of traditional whipping agent to environment.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to the scope that embodiment represents.
embodiment 1
By mass fraction, take 5 parts of glycerin polyether resins, 5 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.2 part of catalyzer pentamethyl-divinyl, 0.3 part of solidifying agent dibutyl tin laurate, 2 parts of water, after mixing, form material combination polyethers, then according to 80 kilograms of combined polyethers, add 5 kilograms of dme, 2 parts of glass fibre, 8 kilograms of mullites and 5 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:1.4 mix and obtain polyurethane rigid foam plastic.
embodiment 2
By mass fraction, take 6 parts of glycerin polyether resins, 4 parts of glycol ether resins, 0.3 part of suds-stabilizing agent water-soluble silicon oil, 0.3 part of catalyzer pentamethyl-divinyl, 0.2 part of solidifying agent dibutyl tin laurate, 3 parts of water, after mixing, form material combination polyethers, then according to 85 kilograms of combined polyethers, add 3 kilograms of dme, 2 parts of glass fibre, 6 kilograms of mullites and 4 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:1.3 mix and obtain polyurethane rigid foam plastic.
embodiment 3
By mass fraction, take 7 parts of glycerin polyether resins, 3 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.4 part of catalyzer pentamethyl-divinyl, 0.2 part of solidifying agent dibutyl tin laurate, 3 parts of water, after mixing, form material combination polyethers, then according to 90 kilograms of combined polyethers, add 2 kilograms of dme, 2 parts of glass fibre, 4 kilograms of mullites and 2 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:0.9 mix and obtain polyurethane rigid foam plastic.
embodiment 4
By mass fraction, take 6 parts of glycerin polyether resins, 4 parts of glycol ether resins, 0.3 part of suds-stabilizing agent water-soluble silicon oil, 0.3 part of catalyzer pentamethyl-divinyl, 0.3 part of solidifying agent dibutyl tin laurate, 4 parts of water, after mixing, form material combination polyethers, then according to 85 kilograms of combined polyethers, add 2 kilograms of dme, 5 parts of glass fibre, 6 kilograms of mullites and 2 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:1.1 mix and obtain polyurethane rigid foam plastic.
embodiment 5
By mass fraction, take 5 parts of glycerin polyether resins, 5 parts of glycol ether resins, 0.2 part of suds-stabilizing agent water-soluble silicon oil, 0.2 part of catalyzer pentamethyl-divinyl, 0.3 part of solidifying agent dibutyl tin laurate, 2 parts of water, after mixing, form material combination polyethers, then according to 80 kilograms of combined polyethers, add 3 kilograms of dme, 4 parts of glass fibre, 8 kilograms of mullites and 5 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:1.0 mix and obtain polyurethane rigid foam plastic.
embodiment 6
By mass fraction, take 6 parts of glycerin polyether resins, 4 parts of glycol ether resins, 0.3 part of suds-stabilizing agent water-soluble silicon oil, 0.3 part of catalyzer pentamethyl-divinyl, 0.3 part of solidifying agent dibutyl tin laurate, 3 parts of water, after mixing, form material combination polyethers, then according to 85 kilograms of combined polyethers, add 3 kilograms of dme, 3 parts of glass fibre, 6 kilograms of mullites and 3 kilograms of carbide fine powder, mix formation polyether composition, then in container with isocyanic ester in mass ratio 1:1.2 mix and obtain polyurethane rigid foam plastic.
Claims (2)
1. a polyurethane hard foam foaming composition, is characterized in that, its main raw material and parts by weight are:
75～90 parts of combined polyethers;
2～5 parts of dme;
2～5 parts, glass fibre;
4～10 parts of mullites;
2～5 parts of carbide fine powder.
2. polyurethane hard foam foaming composition according to claim 1, is characterized in that, described combined polyether adopts the main raw material of following parts by weight to be mixed:
5～7 parts of glycerin polyether resins;
3～5 parts of glycol ether resins;
0.2～0.3 part of suds-stabilizing agent water-soluble silicon oil;
0.2～0.4 part of catalyzer pentamethyl-diethylenetriamine;
0.1～0.3 part of solidifying agent dibutyl tin laurate;
2～4 parts of deionized waters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710236.XA CN103739807A (en) | 2013-12-22 | 2013-12-22 | Polyurethane hard plastic foam composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310710236.XA CN103739807A (en) | 2013-12-22 | 2013-12-22 | Polyurethane hard plastic foam composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103739807A true CN103739807A (en) | 2014-04-23 |
Family
ID=50496885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310710236.XA Pending CN103739807A (en) | 2013-12-22 | 2013-12-22 | Polyurethane hard plastic foam composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103739807A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568701A (en) * | 2015-12-28 | 2016-05-11 | 杭州富阳伟文环保科技有限公司 | Preparation method of pearlescent anti-crease waterproof moisture-permeable polyurethane synthetic leather |
| CN105906780A (en) * | 2016-07-05 | 2016-08-31 | 安徽三彩工贸有限责任公司 | Low temperature resistant polyurethane rigid foamed plastic |
-
2013
- 2013-12-22 CN CN201310710236.XA patent/CN103739807A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568701A (en) * | 2015-12-28 | 2016-05-11 | 杭州富阳伟文环保科技有限公司 | Preparation method of pearlescent anti-crease waterproof moisture-permeable polyurethane synthetic leather |
| CN105906780A (en) * | 2016-07-05 | 2016-08-31 | 安徽三彩工贸有限责任公司 | Low temperature resistant polyurethane rigid foamed plastic |
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Application publication date: 20140423 |