CN107383415A - A kind of polyurethane plastics foaming agent with electrostatic screen function - Google Patents
A kind of polyurethane plastics foaming agent with electrostatic screen function Download PDFInfo
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- CN107383415A CN107383415A CN201710722740.XA CN201710722740A CN107383415A CN 107383415 A CN107383415 A CN 107383415A CN 201710722740 A CN201710722740 A CN 201710722740A CN 107383415 A CN107383415 A CN 107383415A
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- foaming agent
- foam metal
- screen function
- electrostatic screen
- polyurethane
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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
- C08J9/04—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
- C08J9/08—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 carbon dioxide
-
- 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
- C08J9/0066—Use of inorganic compounding ingredients
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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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Abstract
The invention belongs to the preparation field of polyurethane plastics foaming agent, it is proposed a kind of polyurethane plastics foaming agent with electrostatic screen function, it is characterized in that using nanometer foam metal be carrier, is allowed to load sodium acid carbonate, and in nanometer foam metal particle Surface coating layer of polyethylene wax.Its significant effect is that the foaming agent can be dispersed in urethane raw, and during polyurethane reaction, because heat caused by reaction peels off its clad, the sodium acid carbonate of load slowly discharges gas, produces uniform foaming.Meanwhile nanometer foam metal is uniformly distributed in polyurethane matrix, there is electrostatic shield effect.Compared with traditional foaming method, realize that the fretting map product distribution of cells of preparation is uniform, and abscess-size is moderate, and mechanical property is good, structural material can be used as to use.
Description
Technical field
The present invention relates to the preparation field of polyurethane plastics foaming agent, more particularly, to a kind of with electrostatic screen function
Polyurethane plastics foaming agent.
Background technology
Polyurethane plastics has splendid elasticity, flexibility, elongation and compressive strength, and chemical stability is good, resistant to many
The performances such as solvent and oils, high abrasion resistance, also excellent processability, thermal insulation, cohesive.Polyurethane plastics extensive use
In aviation, railway, building, house ornamentation, commodity, physical culture and coating etc..
Nineteen thirty-seven, Germany Bayer synthesized the first polyurethane thermoplastics.The forties, synthetic fibers shellfish is made
Synthetic fibre, obtains polyurethane elastomer, elastomer and foamed plastics, the sixties fifties, and polyurethane coating and adhesive etc. start
Using.The polyurethane industrial in China originates in late 1950s, and nineteen fifty-nine, Shanghai Light Industry Inst. started polyurethane
The research of foamed plastics.From the 1980s, Chinese polyurethane industrial then enters period of flourishing, polyurethane production
Ability, product kind and yield are all doubled and redoubled, and application field expands increasingly, and production technology level is significantly improved, from state
Anti-, space flight department is expanded to oil, automobile, physical culture, ore dressing, metallurgy, printing, building, weaving, medical treatment, water conservancy, grain processing etc.
Numerous industrial departments.
Method polyester foamed at present, generally use foam in the method for chemical foam blowing agent and with microcapsule foamer
Method.The problem of gas release is unmanageable, scattered uneven, the foaming agent analyte of gas remains, meeting be present in CBA
Influence cell nucleation, growth so that cell density is smaller, size is larger and scattered inequality, the foaming modeling of chemical blowing process production
Expect that mechanical property is poor, unsuitable apply is needing to bear the occasion of larger alternate load.Microcapsules for foaming foam
Agent depends on import, and prices are rather stiff, while microcapsule foamer easily disperses uneven, prepares fretting map polyurethane
The problem of distribution of cells is uneven, abscess-size is unmanageable during plastics be present；The problem of this foam structure, can also influence material
Mechanical property, the problem of additionally there are microcapsules and foamed matrix compatibility, whether compatilizer, which adds, can all influence material
Mechanical property, and the problem of cause MAT'L recycling difficulty.Therefore, no matter sent out using chemical blowing method or microcapsules
Bubble method, the fretting map product of preparation have that distribution of cells is uneven, abscess-size is big, it is difficult to be used as structural material.
The research report of polyurethane plastics foaming agent is less at present.Guan etc. has invented a kind of polyurethane mixed foaming agent,
It is by hexafluoro -2- butylene and at least one of pentane, 245fa and 65mfc threes component；Make full use of hexafluoro -2- butylene
ODP（Ozone-depleting can be worth）For 0, GWP（Greenhouse latent energy value）For 2 good characteristic, it is aided with pentane, 245fa, 65mfc are compounded into
Mixed foaming agent obtains low GWP value, low inflammable and explosive property, meets global Environmental Safety production requirement, but the foaming agent is very
The abscess-size and the uniformity of hardly possible control foaming product.Guo etc. has invented a kind of electrostatic shielding plastic film, including multi-layer co-extruded heat
Plastic film, multi-layer co-extruded thermoplastic film are made up of adhesive function layer, casing play and hot blast layer, and it is characterized in that：Also include by PET
Or supporting layer made of PA, PET or PA aluminize on surface made of classical protective action made of supporting layer or aluminium foil supporting layer,
One surface of supporting layer is together with the hot melt coextru-lamination of adhesive function layer；It is coated with another surface of supporting layer and hot sealing layer
Static electricity shield layer.Due to structure as use, reduce processing step, saved the energy, improve production efficiency；Overcome
In the prior art, it is bonded with glue, the defects of volatilization with a large amount of chemical compositions；Protect environment.Tang etc. has invented a kind of new
Type polyurethane foaming agent, include following components according to mass fraction meter：20 ~ 34 parts of dimethyl six generations carbaminate, five fluorine third
22 ~ 36 parts of alkane, 35 ~ 50 parts of CF3I, 10 ~ 6 parts of vegetable oil, 5 ~ 13 parts of acetone, 10 ~ 15 parts of calcium carbonate, PPG 4
~ 9 parts, 12 ~ 16 parts of trioctyl trimellitate (TOTM).After above-mentioned formula, new polyurethane foaming agent of the invention is easy to operate,
The technique scope of application is wide, and material thermal conductivity is low, does not discharge the gas to damage the ozone layer in use.
Existing polyurethane foams technique is all relatively complicated, and course of reaction is difficult to control so that obtained foaming
The abscess-size of product is difficult to control, and application is narrow.
The content of the invention
For problem above, the present invention proposes a kind of polyurethane plastics foaming agent with electrostatic screen function, is characterized in
It is carrier using nanometer foam metal, is allowed to load sodium acid carbonate, and in one layer of nanometer foam metal particle Surface coating
Tissuemat E.Its significant effect is that the foaming agent can be dispersed in urethane raw, during polyurethane reaction,
Because heat caused by reaction peels off its clad, the sodium acid carbonate release gas of load, uniform foaming is produced.Bicarbonate
The rate of gas release of sodium is mainly temperature controlled, it is possible to controls the speed that gas discharges by controlling temperature.Meanwhile
Nanometer foam metal is uniformly distributed in polyurethane matrix, it is possessed good conductive capability, thus assigns polyurethane
Foam electrostatic shield effect, larger alternate load place can be born, can be with safe to use in electric equipment products.By this
The foaming agent that method obtains can make that foaming product distribution of cells is uniform, and abscess-size is moderate, structural material can be used as to use,
It is applied widely.
Concrete technical scheme of the present invention is as follows：
A kind of polyurethane plastics foaming agent with electrostatic screen function, is carrier using nanometer foam metal, is allowed to load
Sodium acid carbonate, and in nanometer foam metal particle Surface coating layer of polyethylene wax, comprise the following steps that：
（1）By METAL HEATING PROCESS to melting, a certain amount of thickener is added, the mixed of nitrogen and argon gas is then passed through into melt liquid
Gas is closed, and is stirred continuously, after liquid cooling is melted, obtains foam metal；
（2）By step（1）Obtained foam metal is placed in absolute ethyl alcohol, is washed using ultrasonic wave, organics removal, so
Afterwards with water washing is distilled 3 times, dry at room temperature；It is subsequently placed in Muffle furnace, heats certain time under air atmosphere, it is entered
Row pre-oxidation treatment is simultaneously ground, and obtains nanometer foam metal；
（3）Miniaturization sodium acid carbonate is dissolved in deionized water, highly concentrated solution is configured, by step（2）The nanoscale bubble of gained
Foam metal is placed in solution, the low-temperature heat under high-speed stirred state, makes moisture evaporation, and sodium acid carbonate powder is carried on nanoscale
In foam metal and internal void；
（4）Tissuemat E and paraffin are mixed in certain mass ratio, room temperature is cooled to after heating melting, then with loading carbon
The nanometer foam metal of sour hydrogen sodium is added in high-speed mixer in certain mass ratio, under stirring at normal temperature, is realized cold cladding, is obtained
To the polyurethane plastics foaming agent with electrostatic screen function.
Preferably, step（1）The foam metal of the preparation is nickel foam, foam copper or foamed iron；
Preferably, step（1）The thickener is carborundum, aluminum oxide or magnesia；
Preferably, step（1）The addition of the thickener is the 2 ~ 3% of metal quality；
Preferably, step（2）The heating-up temperature is 500 ~ 600 DEG C, and the heat time is 10 ~ 20min；
Preferably, step（3）The solution concentration is not less than 70g/L；
Preferably, step（3）The mass ratio of the sodium acid carbonate and nanometer foam metal is 2:1~3:1；
Preferably, step（3）The mixing speed is 600 ~ 800r/min, and heating-up temperature is 35 ~ 40 DEG C；
Preferably, step（4）The mixed proportion of the Tissuemat E and paraffin is 1:1~2:1；
Preferably, step（4）The addition of the Tissuemat E and paraffin is the 20 ~ 30% of nanometer foam metal quality；
Preferably, step（4）The mixing speed is 80 ~ 120r/min.
Small-size effect, skin effect, quantum size effect and macro quanta tunnel effect of nanoparticle etc. cause it
There is good suction-operated to sodium acid carbonate.Sodium acid carbonate decomposes and produces carbon dioxide sharply above at 65 DEG C, and temperature reaches 270
DEG C when can lose whole carbon dioxide, 50 DEG C just can substantially decompose generation carbon dioxide in aqueous.So this foaming agent
During in foaming process, the rate of release of carbon dioxide can be controlled by controlling blowing temperature, so as to control foaming speed
The size of degree and abscess.The outermost Tissuemat E of this foaming agent has excellent cold resistance, heat resistance, chemical resistance and wear-resisting
Property, plays a protective role to the sodium acid carbonate of the internal layer of this foaming agent, when being contacted with other materials, sodium acid carbonate will not directly with
The contact of other materials reacts and discharges carbon dioxide at once, and only controls the release of carbon dioxide by controlling temperature
Speed.Meanwhile nanometer foam metal is uniformly distributed in polyurethane matrix, it is set to possess good conductive capability, thus
Polyurethane foam electrostatic shield effect is assigned, larger alternate load place can be born, can be produced with safe to use in electronic apparatus
Product.
The invention provides a kind of polyurethane plastics foaming agent with electrostatic screen function, compared with prior art, its
The characteristics of prominent and excellent effect are：
1. using foaming agent made from this law, the abscess-size of polyurethane foam product is uniform and stable, good mechanical performance.
2. foaming agent wherein can be dispersed, foamable reaction speed is steady and easy to control.
3. using foaming agent made from this law, its temperature resistant range is larger, and thermal conductivity factor is relatively low, and compressive strength is high, and synthesis makes
With functional.
4. the foaming product of the preparation of the present invention is present, distribution of cells is uniform, abscess-size is suitable, can be used as structural wood
Expect to use.
5. the material environment friendly safety of the present invention, meets environmentally friendly.
6. the present invention's is easy to operate, cost is low, applied widely.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but this should not be interpreted as to the present invention
Scope be only limitted to following example.In the case where not departing from above method thought of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic nickels are heated to melting, 0.2kg carborundum is added, is then passed through nitrogen and argon into molten metal nickel liquid
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 600 DEG C are heated under air atmosphere, 17min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 20kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 70g/L solution, by nanometer foam
Metal is placed in solution, under 600r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 35 DEG C
Body is carried in nanometer foam metal surface and internal void；4kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 120r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 1 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 1 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 1 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 2
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic irons are heated to melting, 0.3kg aluminum oxide is added, is then passed through nitrogen and argon into molten metal iron liquid
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 600 DEG C are heated under air atmosphere, 20min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 25kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 70g/L solution, by nanometer foam
Metal is placed in solution, under 700r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 40 DEG C
Body is carried in nanometer foam metal surface and internal void；5kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 80r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 2 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 2 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 2 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 3
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic nickels are heated to melting, 0.2kg magnesia is added, is then passed through nitrogen and argon into molten metal nickel liquid
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 580 DEG C are heated under air atmosphere, 12min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 30kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 72g/L solution, by nanometer foam
Metal is placed in solution, under 680r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 38 DEG C
Body is carried in nanometer foam metal surface and internal void；6kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 110r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 3 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 3 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 3 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 4
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic irons are heated to melting, 0.3kg carborundum is added, is then passed through nitrogen and argon into molten metal iron liquid
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 560 DEG C are heated under air atmosphere, 16min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 22kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 74g/L solution, by nanometer foam
Metal is placed in solution, under 650r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 35 DEG C
Body is carried in nanometer foam metal surface and internal void；4kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 90r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 4 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 4 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 4 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 5
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic coppers are heated to melting, 0.2kg aluminum oxide is added, is then passed through nitrogen and argon into molten metal copper liquid body
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 550 DEG C are heated under air atmosphere, 10min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 28kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 72g/L solution, by nanometer foam
Metal is placed in solution, under 800r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 40 DEG C
Body is carried in nanometer foam metal surface and internal void；6kg Tissuemat Es are mixed with 5kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 110r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 5 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 5 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 5 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 6
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic nickels are heated to melting, 0.3kg carborundum is added, is then passed through nitrogen and argon into molten metal nickel liquid
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 600 DEG C are heated under air atmosphere, 15min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 25kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 70g/L solution, by nanometer foam
Metal is placed in solution, under 800r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 40 DEG C
Body is carried in nanometer foam metal surface and internal void；5kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 90r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 6 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 6 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 6 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Embodiment 7
A kind of polyurethane plastics foaming agent with electrostatic screen function, it is as follows that it prepares the detailed process of foaming agent：
10kg metallic coppers are heated to melting, 0.2kg magnesia is added, is then passed through nitrogen and argon into molten metal copper liquid body
The mixed gas of gas, and be stirred continuously, after liquid cooling is melted, obtain foam metal；Obtained foam metal is placed in nothing
In water-ethanol, washed using ultrasonic wave, organics removal, then with water washing is distilled 3 times, dried at room temperature.Then put
In Muffle furnace, 500 DEG C are heated under air atmosphere, 20min is incubated, pre-oxidation treatment is carried out to it and is ground to nanometer
Level；Then 20kg miniaturization sodium acid carbonates are dissolved in deionized water, configuration concentration is 75g/L solution, by nanometer foam
Metal is placed in solution, under 700r/min high-speed stirred state low-temperature heat make moisture evaporation, sodium hydrogen carbonate powder to 40 DEG C
Body is carried in nanometer foam metal surface and internal void；4kg Tissuemat Es are mixed with 4kg paraffin, after heating melting
Room temperature is cooled to, is then added with loading the nanometer foam metal of sodium acid carbonate in high-speed mixer, with 120r/ under normal temperature
Min speed stirring, realizes cold cladding, obtains the polyurethane plastics foaming agent with electrostatic screen function.
Polyurethane resin is foamed using the foaming agent obtained by embodiment 7 and tests foaming product properties,
Expansion ratio, as shown in table 1；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 7 and tests foaming product properties, product
Abscess pore diameter range, thermal conductivity factor, temperature resistant range, compressive strength, as shown in table 2；
Polyurethane resin is foamed using the foaming agent obtained by embodiment 7 and tests the resistivity of foaming product, is obtained
Data it is as shown in table 3.
Table 1：
From table 1：
（1）Using foaming agent made from this law, the surface drying time of polyurethane foam within 15min, the absolutely dry time 60min with
It is interior, it is seen that its foamed solidification speed.
（2）Using foaming agent made from this law, polyurethane coefficient of foaming early stage is larger, and later stage coefficient of foaming increase is smaller,
Belong to preceding foaming, be easy to workmen to grasp usage amount, be advantageous to save material, reduce cost.
Table 2：
From table 2：
（1）Using foaming agent made from this law, the abscess-size of polyurethane foam product is uniform and stable, it is seen that foaming agent is wherein
It is uniformly dispersed, foamable reaction speed is steady.
（2）Using foaming agent made from this law, the temperature resistant range of polyurethane foam product is larger, and thermal conductivity factor is relatively low, pressure
Contracting intensity is high, and comprehensive performance is good.
Table 3：
| Specific embodiment | Resistivity（×10-8Ω·m） |
| Embodiment 1 | 6.5 |
| Embodiment 2 | 5.7 |
| Embodiment 3 | 7.0 |
| Embodiment 4 | 8.1 |
| Embodiment 5 | 6.5 |
| Embodiment 6 | 6.4 |
| Embodiment 7 | 7.1 |
From table 3：
Using foaming agent made from this law, the resistivity of polyurethane foam product is smaller, and there is excellent electrostatic screen to act on.
Claims (9)
1. a kind of polyurethane plastics foaming agent with electrostatic screen function, it is characterised in that be using nanometer foam metal
Carrier, it is allowed to load sodium acid carbonate, and in nanometer foam metal particle Surface coating layer of polyethylene wax, obtained plasticized polyurethane
The foaming agent of material；
The polyurethane plastics foaming agent with electrostatic screen function, is prepared by the following method：
（1）By METAL HEATING PROCESS to melting, a certain amount of thickener is added, the mixed of nitrogen and argon gas is then passed through into melt liquid
Gas is closed, and is stirred continuously, after liquid cooling is melted, obtains foam metal；
（2）By step（1）Obtained foam metal is placed in absolute ethyl alcohol, is washed using ultrasonic wave, organics removal, so
Afterwards with water washing is distilled 3 times, dry at room temperature；It is subsequently placed in Muffle furnace, heats certain time under air atmosphere, it is entered
Row pre-oxidation treatment is simultaneously ground, and obtains nanometer foam metal；
（3）Miniaturization sodium acid carbonate is dissolved in deionized water, highly concentrated solution is configured, by step（2）The nanoscale bubble of gained
Foam metal is placed in solution, the low-temperature heat under high-speed stirred state, makes moisture evaporation, and sodium acid carbonate powder is carried on nanoscale
In foam metal and internal void；
（4）Tissuemat E and paraffin are mixed in certain mass ratio, room temperature is cooled to after heating melting, then with loading carbon
The nanometer foam metal of sour hydrogen sodium is added in high-speed mixer in certain mass ratio, under stirring at normal temperature, is realized cold cladding, is obtained
To the polyurethane plastics foaming agent with electrostatic screen function.
A kind of 2. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（1）The foam metal of the preparation is nickel foam, foam copper or foamed iron.
A kind of 3. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（1）The thickener is carborundum, aluminum oxide or magnesia；The addition of the thickener is the 2 ~ 3% of metal quality.
A kind of 4. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（2）The heating-up temperature is 500 ~ 600 DEG C, and the heat time is 10 ~ 20min.
A kind of 5. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（3）The solution concentration is not less than 70g/L.
A kind of 6. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（3）The mass ratio of the sodium acid carbonate and nanometer foam metal is 2:1~3:1.
A kind of 7. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（3）The mixing speed is 600 ~ 800r/min, and heating-up temperature is 35 ~ 40 DEG C.
A kind of 8. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（4）The mixed proportion of the Tissuemat E and paraffin is 1:1~2:1；The addition of the Tissuemat E and paraffin is steeped for nanoscale
The 20 ~ 30% of foam metal quality.
A kind of 9. polyurethane plastics foaming agent with electrostatic screen function according to claim 1, it is characterised in that：Step
（4）The mixing speed is 80 ~ 120r/min.
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| CN201710722740.XA CN107383415A (en) | 2017-08-22 | 2017-08-22 | A kind of polyurethane plastics foaming agent with electrostatic screen function |
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| CN113372603A (en) * | 2021-06-07 | 2021-09-10 | 连云港有道新材料科技有限公司 | White foaming agent with delayed foaming function and preparation method thereof |
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| CN113372603A (en) * | 2021-06-07 | 2021-09-10 | 连云港有道新材料科技有限公司 | White foaming agent with delayed foaming function and preparation method thereof |
| CN115850832A (en) * | 2022-09-06 | 2023-03-28 | 东莞市盈圆合创新材料有限公司 | Environment-friendly antibacterial electron radiation cross-linked polyolefin foam and preparation method thereof |
| CN115368727A (en) * | 2022-09-16 | 2022-11-22 | 上海嘉均瑞科技有限公司 | High-resilience polyurethane foam material and preparation method thereof |
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Application publication date: 20171124 |