CN107501912A - A kind of preparation method of polyurethane foam plastics - Google Patents
A kind of preparation method of polyurethane foam plastics Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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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
- C08G18/4825—Polyethers containing two hydroxy groups
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/32—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof from compositions containing microballoons, e.g. syntactic foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/22—Expandable microspheres, e.g. Expancel®
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a kind of preparation method of polyurethane foam plastics, belong to field of polymer material preparing technology.Protective agent and dopamine solution are mixed to prepare maceration extract by the present invention first, and nanometer aluminium powder is pre-processed with maceration extract, pretreatment aluminium powder is made, then use Gluten, peach gum, stickiness sizing material is made in precipitated calcium carbonate and water, and it is spray-dried after mixing pretreatment aluminium powder and stickiness sizing material, cladding microballoon is made, then first by PPG, water, triethylene diamine etc. adds reactor, after being uniformly mixed, add isocyanates and cladding microballoon, and add acetum, continue stirring reaction, again successively through injection molding, foaming, curing, the demoulding, produce polyurethane foam plastics.Polyurethane foam plastics prepared by technical solution of the present invention has the characteristics of excellent mechanical property, improves it in multi-field application value.
Description
Technical field
The invention discloses a kind of preparation method of polyurethane foam plastics, belong to field of polymer material preparing technology.
Background technology
Foamed plastics is that a kind of proportion is small, price is low, the easy porous media of shaping.It has absorbs kinetic energy well
Characteristic, impact can be relaxed, weakens vibration, reduce stress amplitude, therefore be widely used in the packaging of fragile goods, visual plant
Protection and works inside filling etc..Because the above use condition is possibly subjected to shock loading, therefore study
Mechanical behavior of the foamed plastics under various shock loadings is the problem of relevant design department extremely pays close attention to.Polymeric foamable material
So that its density is low, thermal insulation is good, buffering or the characteristics such as damping capacity is good, daily life and it is industrial in be widely applied.
Polyurethane foam plastics is most widely used in expanded material, and it is with isocyanates, polyether/polyester polyol, foaming agent
For primary raw material, it is aided with a kind of porous material that other auxiliary agents such as catalyst, crosslinking agent synthesize.Because its performance is changeable, technique
Simply, therefore receive most attention and develop rapidly.
Polyurethane foam plastics, it is that isocyanates and the aggregated foaming of hydroxy compounds are made, can be divided into by its hardness soft
Matter and the class of hard two, wherein soft is principal item.In general, it has splendid elasticity and flexibility；Chemical stability
It is good, resistance to many solvents and oils；High abrasion resistance is big compared with natural sponge 20 times；Also excellent processability, thermal insulation, bonding
The performances such as property, are a kind of padded coamings of function admirable, but price is higher.Hard polyaminoester as one of pressure-resistant packaging material
Foamed plastics, it is necessary to have higher compressive strength, modulus and dimensional stability.It can partly replace timber, metal and its
His plastics, have a wide range of applications in industries such as packed and transported, building, national defence, military project, automobile and physical culture.Add rigid particles
It is the important channel for reaching above-mentioned purpose, but often the tensile strength to material and impact flexibility produce harmful effect.
Therefore, the polyurethane foam plastics for having good compressive property, tensile resistance and erosion-resisting characteristics concurrently is prepared, into
Mechanical property urgent problem to be solved is further improved for it.
The content of the invention
The present invention solves the technical problem of：For conventional polyurethane foams plastics mechanical property it is bad the problem of,
Provide a kind of preparation method of polyurethane foam plastics.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）It is 1 in mass ratio by protective agent and dopamine solution：60~1：80 mixing, maceration extract is obtained, then by nanometer aluminium powder with soaking
Stain liquid is 1 in mass ratio：20~1：4~6h of ultrasonic immersing after 40 mixing, is filtered, washed and dried, obtains pretreatment aluminium powder；
（2）Count in parts by weight, take 10~20 parts of Glutens successively, 20~40 parts of peach gums, 10~20 parts of precipitated calcium carbonates, 80~
100 parts of water, first mix Gluten and peach gum with water, after standing swelling, add precipitated calcium carbonate, are uniformly mixed, obtain
Stickiness sizing material；
（3）It is 1 in mass ratio that aluminium powder, which will be pre-processed, with stickiness sizing material：3~1：5 are stirred, then it is spray-dried after, charing,
Microballoon must be coated；
（4）Count in parts by weight, take 30~50 parts of PPGs successively, 50~70 parts of isocyanates, 10~30 parts of water, 3~5
Part triethylene diamine, 0.3~0.5 part of silicone oil, 0.06~0.08 part of stannous octoate, 8~10 parts of cladding microballoons, first by polyether polyols
Alcohol, water, triethylene diamine, silicone oil and stannous octoate add reactor, after being uniformly mixed, add isocyanates and cladding
Microballoon, and add the acetum of 0.3~0.5 times of microspheres quality of cladding, continues stirring reaction, then successively through injection molding, foaming, ripe
Change, the demoulding, produce polyurethane foam plastics.
Step（1）The protective agent is sodium thiosulfate, any one in sodium dihydrogen phosphite or potassium dihydrogen phosphite.
Step（4）The PPG is polyoxypropyleneglycol, polyoxytetramethylene glycol or tetrahydrofuran-oxidation
Any one in propylene copolymer glycols.
Step（4）The isocyanates is methyl diphenylene diisocyanate, toluene di-isocyanate(TDI) or isophorone two
Any one in isocyanates.
Step（4）The silicone oil is methyl-silicone oil, MethylethoxylsiliconFluid Fluid, in methyl phenyl silicone oil or methyl trifluoro propyl silicone oil
Any one.
The beneficial effects of the invention are as follows：
Technical solution of the present invention is first by nanometer aluminium powder protective agent and dopamine impregnation, in dipping process, using more
Bar excellent filming performance of amine, the film with protective effect is formed on nanometer aluminium powder surface, avoid nanometer aluminium powder treated
It is oxidized in journey, while improves the interface compatibility of stickiness sizing material made of nanometer aluminium powder and Gluten etc., after spray-dried,
Charing, one layer of charing shell is formed on nanometer aluminium powder surface, and obtained cladding microballoon is added to the preparation of polyurethane foam
During go, in subsequent processes, precipitated calcium carbonate in the surface coated shell of aluminium powder first with the acetic acid in system
Solution contact reacts, and generation carbon dioxide can play a part of auxiliary foaming, as reaction is further carried out, weak acid
Property composition further penetrate into inside cladding microballoon, contacted with aluminium powder, be dissipated aluminium powder reaction, and produce hydrogen
Gas, play a part of further auxiliary foaming, be left porous charing microballoon, carbonize the presence of microballoon, on the one hand can be used as branch
Support structure, the mechanical property of system is improved, on the other hand, hollow charing microballoon can further improve the hole inside system
Rate.
Embodiment
It is 1 in mass ratio：60~1：80 pour into protective agent and mass concentration in beaker for 2g/L dopamine solutions, use glass
Glass rod 10~20min of stirring and dissolving, obtains maceration extract, then by nanometer aluminium powder and gained maceration extract is 1 in mass ratio：20~1：40 is mixed
After conjunction, under the conditions of supersonic frequency is 45~50kHz, 4~6h of ultrasonic immersing, filtering, filter cake is obtained, and filter is washed with deionized
Cake 3~5 times, then the filter cake after washing is moved into vacuum drying chamber, 2~4h is dried under the conditions of being 75~80 DEG C in temperature, is obtained dry
Dry filter cake, as pre-processes aluminium powder；Count in parts by weight, take 10~20 parts of Glutens successively, 20~40 parts of peach gums, 10~20 parts
Precipitated calcium carbonate, 80~100 parts of water, first Gluten, peach gum and water are mixed and added in beaker, 5 are stirred with glass bar~
After 10min, after 3~5h of swelling is stood under room temperature condition, then precipitated calcium carbonate is added into beaker, and beaker is moved into digital display
Test the speed constant temperature blender with magnetic force, is 55~60 DEG C in temperature, under the conditions of rotating speed is 300~500r/min, constant temperature is stirred 30
~40min, obtain stickiness sizing material；It is 1 in mass ratio：3~1：5 mix pretreatment aluminium powder with stickiness sizing material, with mixer with 300
~500r/min rotating speeds are stirred 45~60min, obtain mixed serum, and gained mixed serum is delivered into spray by screw pump
Mist drier, it is 20~40g/min to control feed rate, is 95~105 DEG C in EAT, leaving air temp is 65~75 DEG C of bars
Under part, spray drying, dried feed is obtained, and gained dried feed is transferred to retort, be passed through with 80~150mL/min speed into stove
Nitrogen, under nitrogen guard mode, 500~550 DEG C, after insulation carbonizes 2~4h are warming up to 3~5 DEG C/min rate programs, with
Stove is cooled to room temperature, discharging, obtains cladding microballoon；Then count in parts by weight, take 30~50 parts of PPGs successively, 50~70
Part isocyanates, 10~30 parts of water, 3~5 parts of triethylene diamines, 0.3~0.5 part of silicone oil, 0.06~0.08 part of stannous octoate, 8
~10 parts of cladding microballoons, PPG, water, triethylene diamine, silicone oil and stannous octoate are first added in a kettle, with 200
After~400r/min rotating speeds are stirred 30~60min, then isocyanates and cladding microballoon are added into reactor, be in temperature
45~55 DEG C, under the conditions of rotating speed is 400~600r/min, after 2~4h of constant temperature stirring reaction, add cladding microspheres quality 0.3
~0.5 times of mass fraction is 10~15% acetums, continues constant temperature and stirs 20~30s, obtains reaction solution, and gained is reacted
In liquid injection mould, under room temperature condition, 100~120s of stand foaming, under the conditions of temperature is 55~60 DEG C, curing 24~
36h, the demoulding, produces polyurethane foam plastics.The protective agent is sodium thiosulfate, sodium dihydrogen phosphite or potassium dihydrogen phosphite
In any one.The PPG is polyoxypropyleneglycol, polyoxytetramethylene glycol or tetrahydrofuran-oxidation third
Any one in alkene copolymer glycols.The isocyanates is methyl diphenylene diisocyanate, toluene di-isocyanate(TDI) or different
Any one in isophorone diisocyanate.The silicone oil is methyl-silicone oil, MethylethoxylsiliconFluid Fluid, methyl phenyl silicone oil or
Any one in methyl trifluoro propyl silicone oil.
Example 1
It is 1 in mass ratio：80 pour into protective agent and mass concentration in beaker for 2g/L dopamine solutions, are stirred with glass bar molten
20min is solved, obtains maceration extract, then by nanometer aluminium powder and gained maceration extract is 1 in mass ratio：After 40 mixing, it is in supersonic frequency
Under the conditions of 50kHz, ultrasonic immersing 6h, filtering, filter cake is obtained, and filter cake is washed with deionized 5 times, then the filter cake after washing is moved
Enter vacuum drying chamber, dry 4h under the conditions of being 80 DEG C in temperature, obtain dry cake, as pre-process aluminium powder；Count in parts by weight,
20 parts of Glutens are taken successively, 40 parts of peach gums, 20 parts of precipitated calcium carbonates, 100 parts of water, first Gluten, peach gum and water are mixed and added
In beaker, after being stirred 10min with glass bar, after swelling 5h is stood under room temperature condition, then lightweight carbon is added into beaker
Sour calcium, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 60 DEG C, it is permanent under the conditions of rotating speed is 500r/min
Temperature is stirred 40min, obtains stickiness sizing material；It is 1 in mass ratio：5 will pretreatment aluminium powder is mixed with stickiness sizing material, with mixer with
500r/min rotating speeds are stirred 60min, obtain mixed serum, and gained mixed serum is delivered into spray drying by screw pump
Device, it is 40g/min to control feed rate, is 105 DEG C in EAT, under the conditions of leaving air temp is 75 DEG C, spray drying, obtains dry
Dry material, and gained dried feed is transferred to retort, nitrogen is passed through into stove with 150mL/min speed, under nitrogen guard mode,
550 DEG C are warming up to 5 DEG C/min rate programs, after insulation carbonizes 4h, room temperature is cooled to the furnace, discharges, obtain cladding microballoon；Then
Count in parts by weight, take 50 parts of PPGs, 70 parts of isocyanates, 30 parts of water, 5 parts of triethylene diamines, 0.5 part of silicon successively
Oil, 0.08 part of stannous octoate, 10 parts of cladding microballoons, PPG, water, triethylene diamine, silicone oil is first added in a kettle
And stannous octoate, after being stirred 60min with 400r/min rotating speeds, then isocyanates and cladding microballoon are added into reactor,
It is 55 DEG C in temperature, under the conditions of rotating speed is 600r/min, after constant temperature stirring reaction 4h, adds 0.5 times of microspheres quality of cladding
Mass fraction is 15% acetum, continues constant temperature stirring 30s, obtains reaction solution, and gained reaction solution is injected in mould, in room
Under the conditions of temperature, stand foaming 120s, under the conditions of temperature is 60 DEG C, 36h is cured, the demoulding, produces polyurethane foam plastics.Institute
It is sodium thiosulfate to state protective agent.The PPG is polyoxypropyleneglycol.The isocyanates is diphenyl methane
Diisocyanate.The silicone oil is methyl-silicone oil.
Example 2
It is 1 in mass ratio：70 pour into protective agent and mass concentration in beaker for 2g/L dopamine solutions, are stirred with glass bar molten
15min is solved, obtains maceration extract, then by nanometer aluminium powder and gained maceration extract is 1 in mass ratio：After 30 mixing, it is in supersonic frequency
Under the conditions of 48kHz, ultrasonic immersing 5h, filtering, filter cake is obtained, and filter cake is washed with deionized 4 times, then the filter cake after washing is moved
Enter vacuum drying chamber, dry 3h under the conditions of being 78 DEG C in temperature, obtain dry cake, as pre-process aluminium powder；Count in parts by weight,
15 parts of Glutens are taken successively, 30 parts of peach gums, 15 parts of precipitated calcium carbonates, 90 parts of water, first are mixed to add Gluten, peach gum and water and are burnt
In cup, after being stirred 8min with glass bar, after swelling 4h is stood under room temperature condition, then lightweight carbonic acid is added into beaker
Calcium, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 58 DEG C, under the conditions of rotating speed is 400r/min, constant temperature
35min is stirred, obtains stickiness sizing material；It is 1 in mass ratio：4 will pretreatment aluminium powder is mixed with stickiness sizing material, with mixer with
400r/min rotating speeds are stirred 50min, obtain mixed serum, and gained mixed serum is delivered into spray drying by screw pump
Device, it is 30g/min to control feed rate, is 100 DEG C in EAT, under the conditions of leaving air temp is 70 DEG C, spray drying, obtains dry
Dry material, and gained dried feed is transferred to retort, nitrogen is passed through into stove with 120mL/min speed, under nitrogen guard mode,
520 DEG C are warming up to 4 DEG C/min rate programs, after insulation carbonizes 3h, room temperature is cooled to the furnace, discharges, obtain cladding microballoon；Then
Count in parts by weight, take 40 parts of PPGs, 60 parts of isocyanates, 20 parts of water, 4 parts of triethylene diamines, 0.4 part of silicon successively
Oil, 0.07 part of stannous octoate, 9 parts of cladding microballoons, first in a kettle add PPG, water, triethylene diamine, silicone oil and
Stannous octoate, after being stirred 40min with 300r/min rotating speeds, then isocyanates and cladding microballoon are added into reactor, in
Temperature is 50 DEG C, under the conditions of rotating speed is 500r/min, after constant temperature stirring reaction 3h, adds the matter of 0.4 times of microspheres quality of cladding
Amount fraction is 13% acetum, continues constant temperature stirring 25s, obtains reaction solution, and gained reaction solution is injected in mould, in room temperature
Under the conditions of, stand foaming 110s, under the conditions of temperature is 58 DEG C, 30h is cured, the demoulding, produces polyurethane foam plastics.It is described
Protective agent is sodium thiosulfate.The PPG is polyoxypropyleneglycol.The isocyanates is diphenyl methane two
Isocyanates.The silicone oil is methyl-silicone oil.
Example 3
It is 1 in mass ratio：60 pour into protective agent and mass concentration in beaker for 2g/L dopamine solutions, are stirred with glass bar molten
10min is solved, obtains maceration extract, then by nanometer aluminium powder and gained maceration extract is 1 in mass ratio：After 20 mixing, it is in supersonic frequency
Under the conditions of 45kHz, ultrasonic immersing 4h, filtering, filter cake is obtained, and filter cake is washed with deionized 3 times, then the filter cake after washing is moved
Enter vacuum drying chamber, dry 2h under the conditions of being 75 DEG C in temperature, obtain dry cake, as pre-process aluminium powder；Count in parts by weight,
10 parts of Glutens are taken successively, 20 parts of peach gums, 10 parts of precipitated calcium carbonates, 80 parts of water, first are mixed to add Gluten, peach gum and water and are burnt
In cup, after being stirred 5min with glass bar, after swelling 3h is stood under room temperature condition, then lightweight carbonic acid is added into beaker
Calcium, and beaker immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 55 DEG C, under the conditions of rotating speed is 300r/min, constant temperature
30min is stirred, obtains stickiness sizing material；It is 1 in mass ratio：3 will pretreatment aluminium powder is mixed with stickiness sizing material, with mixer with
300r/min rotating speeds are stirred 45min, obtain mixed serum, and gained mixed serum is delivered into spray drying by screw pump
Device, it is 20g/min to control feed rate, is 95 DEG C in EAT, under the conditions of leaving air temp is 65 DEG C, spray drying, obtains dry
Dry material, and gained dried feed is transferred to retort, nitrogen is passed through into stove with 80mL/min speed, under nitrogen guard mode,
500 DEG C are warming up to 3 DEG C/min rate programs, after insulation carbonizes 2h, room temperature is cooled to the furnace, discharges, obtain cladding microballoon；Then
Count in parts by weight, take 30 parts of PPGs, 50 parts of isocyanates, 10 parts of water, 3 parts of triethylene diamines, 0.3 part of silicon successively
Oil, 0.06 part of stannous octoate, 8 parts of cladding microballoons, first in a kettle add PPG, water, triethylene diamine, silicone oil and
Stannous octoate, after being stirred 30min with 200r/min rotating speeds, then isocyanates and cladding microballoon are added into reactor, in
Temperature is 45 DEG C, under the conditions of rotating speed is 400r/min, after constant temperature stirring reaction 2h, adds the matter of 0.3 times of microspheres quality of cladding
Amount fraction is 10% acetum, continues constant temperature stirring 20s, obtains reaction solution, and gained reaction solution is injected in mould, in room temperature
Under the conditions of, stand foaming 100s, under the conditions of temperature is 55 DEG C, 24h is cured, the demoulding, produces polyurethane foam plastics.It is described
Protective agent is sodium thiosulfate.The PPG is polyoxypropyleneglycol.The isocyanates is diphenyl methane two
Isocyanates.The silicone oil is methyl-silicone oil.
Comparative example：The polyurethane foam plastics of Shanghai Materials Co., Ltd production.
The polyurethane foam plastics of the gained of example 1 to 3 and comparative example product are subjected to performance detection, specific detection method is such as
Under：
1. compression performance：Tested by GB/T8813, compression stress during sample deformation ratio 10% is compressive strength, compression
Speed is 2mm/min；
2. tensile property：Tested by GB/T9641, draw speed 2mm/min；
3. simple beam impact strength：Tested with reference to GB/T1043, using non-notch sample.
Specific testing result is as shown in table 1：
Table 1
From the testing result of table 1, polyurethane foam plastics prepared by technical solution of the present invention has excellent mechanical property
Feature, it is improved in multi-field application value.
Claims (5)
1. a kind of preparation method of polyurethane foam plastics, it is characterised in that specifically preparation process is：
（1）It is 1 in mass ratio by protective agent and dopamine solution：60~1：80 mixing, maceration extract is obtained, then by nanometer aluminium powder with soaking
Stain liquid is 1 in mass ratio：20~1：4~6h of ultrasonic immersing after 40 mixing, is filtered, washed and dried, obtains pretreatment aluminium powder；
（2）Count in parts by weight, take 10~20 parts of Glutens successively, 20~40 parts of peach gums, 10~20 parts of precipitated calcium carbonates, 80~
100 parts of water, first mix Gluten and peach gum with water, after standing swelling, add precipitated calcium carbonate, are uniformly mixed, obtain
Stickiness sizing material；
（3）It is 1 in mass ratio that aluminium powder, which will be pre-processed, with stickiness sizing material：3~1：5 are stirred, then it is spray-dried after, charing,
Microballoon must be coated；
（4）Count in parts by weight, take 30~50 parts of PPGs successively, 50~70 parts of isocyanates, 10~30 parts of water, 3~5
Part triethylene diamine, 0.3~0.5 part of silicone oil, 0.06~0.08 part of stannous octoate, 8~10 parts of cladding microballoons, first by polyether polyols
Alcohol, water, triethylene diamine, silicone oil and stannous octoate add reactor, after being uniformly mixed, add isocyanates and cladding
Microballoon, and add the acetum of 0.3~0.5 times of microspheres quality of cladding, continues stirring reaction, then successively through injection molding, foaming, ripe
Change, the demoulding, produce polyurethane foam plastics.
A kind of 2. preparation method of polyurethane foam plastics according to claim 1, it is characterised in that：Step（1）It is described
Protective agent is sodium thiosulfate, any one in sodium dihydrogen phosphite or potassium dihydrogen phosphite.
A kind of 3. preparation method of polyurethane foam plastics according to claim 1, it is characterised in that：Step（4）It is described
PPG is polyoxypropyleneglycol, appointing in polyoxytetramethylene glycol or tetrahydrofuran-propylene oxide copolymer glycols
Meaning is a kind of.
A kind of 4. preparation method of polyurethane foam plastics according to claim 1, it is characterised in that：Step（4）It is described
Isocyanates is methyl diphenylene diisocyanate, any one in toluene di-isocyanate(TDI) or IPDI
Kind.
A kind of 5. preparation method of polyurethane foam plastics according to claim 1, it is characterised in that：Step（4）It is described
Silicone oil is methyl-silicone oil, MethylethoxylsiliconFluid Fluid, any one in methyl phenyl silicone oil or methyl trifluoro propyl silicone oil.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109054664A (en) * | 2018-07-05 | 2018-12-21 | 胡果青 | A kind of preparation method of hot melt adhesive |
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