CN107082953A - Inhale ripple, guided wave PP foam material and preparation method thereof - Google Patents
Inhale ripple, guided wave PP foam material and preparation method thereof Download PDFInfo
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- CN107082953A CN107082953A CN201710313289.6A CN201710313289A CN107082953A CN 107082953 A CN107082953 A CN 107082953A CN 201710313289 A CN201710313289 A CN 201710313289A CN 107082953 A CN107082953 A CN 107082953A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/60—Measuring, controlling or regulating
-
- 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
-
- 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
- C08K3/02—Elements
- C08K3/04—Carbon
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- 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
Abstract
Ripple, guided wave PP foam material are inhaled the invention discloses one kind, is mainly made up of following components：60 80 parts of polypropylene, 10 30 parts of conductive black, 13 parts of dispersant, 15 parts of foaming agent, 15 parts of antioxidant；The purity of the conductive black is 90% 99.9%.Suction ripple, the guided wave PP foam material of acquisition, not only there is the synthesis premium properties of plain polypropylene expanded material, especially possess good electric conductivity, guided wave and wave absorbtion, solve the technical barrier that non-conductive, the conductive not guided wave of insulation, guided wave that traditional expanded material exists in itself do not inhale ripple.The present invention's inhales ripple, the preparation method of guided wave PP foam material, with kettle pressure type physical blowing process, change change of the conductive black in bubble in-vivo content, assign the excellent conduction of expanded material, inhale the performance for involving guided wave, it is significant for the development of expanded material production technology.
Description
Technical field
The present invention relates to PP foam material technical field, more particularly to a kind of suction ripple, guided wave PP foam material,
And the preparation method of the material.
Background technology
Acrylic resin has the heat resistance that light weight, raw material sources are abundant, the ratio of performance to price is superior and excellent, resistance toization
Learn corrosivity, the features such as be easily recycled, be the most fast general thermoplastic resin of increase of production in the world, with polypropylene production
Increase rapidly, the research and development of PP foam material turn into focus in recent years, research finds PP foam material tool
There are many merits：1) polypropylene (PP) is rigidly better than polyethylene (PE), and chemical resistance is similar to PE；2) polyacrylic vitrifying temperature
Degree is less than room temperature, and shock resistance is better than PS, and is a kind of environment friendly material；3) polypropylene has higher thermal deformation temperature
The high temperature of degree, generally 130 DEG C of ability, can be applied in some high-temperature fields, and closed foam structure makes its thermal conductivity
Will not be impacted because moist, therefore can be used as insulation material；4) have good low-temperature characteristics, PP foaming products even in-
Good performance is also shown at 30 DEG C；5) there is excellent resistance to compression energy absorption performance；6) there is shape, size restoration stability,
PP foaming products still are able to recover original-shape quickly after by repeatedly continuous shock and deflection deformation, without producing permanent shape
Become；7) light weight and can Reusability, PP foaming products pliability is good, can Reusability, non-breakable, easy recycling,
Easily decompose, product is free of to the poisonous and hazardous composition of human body, and burning does not produce noxious material；8) there is good surface protective
And sound insulation value, PP foaming products are semi-rigid shapings, and hardness, flexibility with appropriateness will not be abraded, damaging is in contact with it
Object, with preferable surface protective.Although polypropylene expanded product has light specific gravity, elastic good, antidetonation resistance to compression, deformation
Recovery rate height, good absorbent properties, oil resistant, acidproof, alkaline-resisting, resistance to various chemical solvents, do not absorb water, insulate, it is heat-resisting, it is nonpoisonous and tasteless etc.
Numerous good performances and application prospect, but the development difficulty of polypropylene foam is larger, and also PP foam material is deposited in itself
Insulation can not conductive, conduction be unable to guided wave, guided wave but the technical problems such as ripple can not be inhaled, in military affairs, aviation, navigation, electric power
System and the special system field such as civilian with being restricted.
The content of the invention
To solve the deficiency that prior art is present, ripple, guided wave PP foam material, the material are inhaled the invention provides one kind
Material is in addition to the synthesis premium properties with plain polypropylene expanded material, also with good electric conductivity, wave absorbtion and guided wave,
It can be applied to the special system such as military affairs, security, electric power field.
To achieve the above object, the present invention is provided suction ripple, guided wave PP foam material, mainly by following components system
Into：60-80 parts of polypropylene, 10-30 parts of conductive black, 1-3 parts of dispersant, 1-5 parts of foaming agent, 1-5 parts of antioxidant；It is described to lead
The purity of electric carbon black is 90%-99.9%.
The suction ripple of the present invention, guided wave PP foam material are by raw material polypropylene and conductive black, in foaming agent and other
In the presence of assistant agent, occur qualitative change, be transformed into the expanded material of soft and high resilience by hard solid, by strict
Limit the consumption of conductive black, and conductive black purity, honeycomb fashion group of the precise controlling conductive black inside expanded material
The conductivity showed in structure is knitted, expanded material is possessed electric conductivity, expanded material friction is assigned and does not produce electrostatic, or can
As the performance advantage of transience conducting medium, and while possessing high conduction performance, the finished product knot formed by expanded material
Structure guides electric wave, realizes guided wave, further, the absorption by the internal structure of expanded material to sound wave, realizes and inhales ripple, leads
The perfect to sound wave of ripple absorbs, and the insulation that the traditional expanded material of solution exists in itself is non-conductive, conductive not guided wave, guided wave do not inhale ripple
Technical barrier.Suction ripple that the present invention is obtained, guided wave PP foam material, conductive, guided wave and wave absorbtion, with
And good thermoplasticity, photostability, light specific gravity, elastic good, antidetonation resistance to compression, Recovery are high, absorbent properties are good, oil resistant,
Acidproof, alkaline-resisting, resistance to various chemical solvents, do not absorb water, heat-resisting (- 40~130 DEG C), nonpoisonous and tasteless etc. numerous excellent comprehensive
Can, it is adaptable to the application of the field such as military affairs, aviation, navigation, power system, life, civilian, automobile and some special systems.
As the restriction to above-mentioned technical proposal, the polypropylene includes polypropylene agglomerate or the polypropylene of crushing
Part.
Prepare and inhale in ripple, the raw material components of guided wave expanded material, polypropylene can use polypropylene agglomerate, can also use
Polypropylene part after crushing, it is particularly possible to using the discarded polypropylene part reclaimed, reclaimed again beneficial to pp material
Utilize.
As the restriction to above-mentioned technical proposal, the dispersant is dispersant NNO or paraffin.
As the restriction to above-mentioned technical proposal, the antioxidant is antioxidant BHT, pentaerythritol ester or 4,4 '-sulphur
Dai Shuanzhong one kind.
As the restriction to above-mentioned technical proposal, the foaming agent is lauryl sodium sulfate.
As the restriction to above-mentioned technical proposal, the consumption of the conductive black is 10-25 parts.
Meanwhile, should present invention also offers a kind of preparation method as described above for inhaling ripple, guided wave PP foam material
Method comprises the following steps：
A, polypropylene is mixed with dispersant, foaming agent, antioxidant after, stir, obtain premix；
B, conductive black is added in premix, continues after stirring, be transferred to single screw extrusion machine extrusion, then
Water cooling, wire drawing, air-dried pelletizing, obtain polypropylene material particulate；
C, by polypropylene material particulate carry out kettle pressure type physical blowing, in 152-155 DEG C of blowing temperature, blow pressure 2.3-
First time foaming is carried out under the conditions of 3.0MPa, polypropylene expanded particle is obtained；By polypropylene expanded particle health more than 4 hours,
Then it is blown into storage tank to pressurize 6 more than hour, finally in more than 140 DEG C of blowing temperature, enters under the conditions of blow pressure 3-10MPa
Second of foaming of row, suction ripple, the guided wave PP foam material of multiple needed for obtaining product.
The present invention provide preparation inhale ripple, the method for guided wave PP foam material, be by other raw material components premix after,
Add conductive black, then extruded via single screw extrusion machine, wire drawing, pelletizing into uniform particulate, pass through kettle pressure type afterwards
Physical blowing process carries out first time foaming, raw material polypropylene and conductive black is produced qualitative change, with similar puffed rice high pressure
And steamed bun producing principle, solid, hard conducting polypropylene fine-particle solid is foamed into outside and seems smooth, internal like honeycomb
Shape and the foam of soft high resilience, the whole comprehensive amplification of particulate cause each raw material components to become in unit area content
Change and because changes of contents causes performance change, the change of especially unit volume conductive black content causes conductance to sexually revise, obtained
To foam particle, then after health, pressurization, carry out second and foam, multiplying power needed for being amplified to product makes each component content again
Change, bubble in-vivo content of the conductivity with conductive black in foaming changes again, it is final to produce conduction, inhale and involve guided wave
Performance.
As the restriction to above-mentioned technical proposal, speed of agitator is 1000-1200 revs/min in the step a, during stirring
Between be 3-5 minutes；Speed of agitator is 1000-1200 revs/min in the step b, and mixing time is 1-3 minutes；What is obtained is poly-
The length of propylene material particulate is 0.8-1.2mm, and quality is 0.8-1.2g.
As the restriction to above-mentioned technical proposal, the processing temperature of single screw extrusion machine is described in step b：One area's temperature
180 DEG C, two area's temperature are 190 DEG C, and three area's temperature are 195 DEG C, and four area's temperature are 200 DEG C, and five area's temperature are 215 DEG C, six area's temperature
Spend for 225 DEG C, seven area's temperature are 235 DEG C, eight area's temperature are 240 DEG C；The engine speed 1120-1400 of the single screw extrusion machine
Rev/min.
As the restriction to above-mentioned technical proposal, the operation of health described in step c is placement under normal temperature, normal pressure；The storage
Batch can pressurized conditions are to be pressurized to more than 7MPa.
Further limit premix stirring condition in preparation method, add stirring condition after conductive black, obtain poly- third
Ripple, the foaming system of guided wave expanded material are inhaled in the parameter such as alkene particles of material size and the condition of work of single screw extrusion machine, control
Standby reaction is more effective, and the material property of acquisition is more superior.
In summary, using technical scheme, suction ripple, the guided wave PP foam material of acquisition, are by raw material
Polypropylene and conductive black, in the presence of foaming agent and other assistant agents, occur qualitative change, form expanded material, and by limiting
The conductivity that the consumption control conductive black of conductive black is showed in the honeycomb fashion institutional framework inside expanded material, makes hair
Foam material not only have plain polypropylene expanded material synthesis premium properties, especially possess good electric conductivity, guided wave and
Wave absorbtion, solve non-conductive, the conductive not guided wave of insulation, guided wave that traditional expanded material exists in itself do not inhale ripple technology it is difficult
Topic, it is adaptable to the application of the field such as military affairs, aviation, navigation, power system, life, civilian, automobile and some special systems.
What the present invention was provided inhales ripple, the preparation method of guided wave PP foam material, with kettle pressure type physical blowing process, by sending out twice
Bubble, is foamed into outside by solid, hard conducting polypropylene fine-particle solid and seems smooth, internal like cellular and soft rich
The foam of elasticity, and change change of the conductive black in bubble in-vivo content via foaming effect, assign expanded material excellent suction
Ripple, guided wave and the performance for inhaling ripple, it is significant for the development of expanded material production technology.
Embodiment
Below in conjunction with embodiment, technical scheme is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area
The every other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Embodiment
The present embodiment is related to suction ripple, guided wave PP foam material and its preparation.
Embodiment 1
One kind inhales ripple, guided wave PP foam material, and its component formula is：73-80 parts of polypropylene, conductive black 10-17
Part, 3 parts of dispersant, 4 parts of foaming agent, 3 parts of antioxidant；The purity of the conductive black is 99%；
Ripple, the preparation of guided wave PP foam material is inhaled to carry out according to the following steps：
A, the polypropylene weighed in proportion, dispersant, foaming agent, antioxidant be all added in homogenizer, with
1200 revs/min of speed of agitator, stirs 3 minutes, obtains premix；
B, the conductive black of weighing is added in homogenizer mixed with premix, with 1200 revs/min of stirring
Rotating speed, continues after stirring 2 minutes, and the whole materials stirred are transferred into single screw extrusion machine extrusion, then water cooling, drawing
Silk, air-dried pelletizing, obtain length for 0.9mm, quality is 0.9g, the uniform polypropylene material particulate of conductive black content；It is described
The processing temperature of single screw extrusion machine is：One 180 DEG C of area's temperature, two area's temperature are 190 DEG C, and three area's temperature are 195 DEG C, four area's temperature
Spend for 200 DEG C, five area's temperature are 215 DEG C, six area's temperature are 225 DEG C, seven area's temperature are 235 DEG C, eight area's temperature are 240 DEG C；Institute
The engine speed for stating single screw extrusion machine is 1350 revs/min；
C, by polypropylene material particulate carry out kettle pressure type physical blowing, i.e., in a kettle. addition water particulate is steeped completely
Cross, do not stop to be stirred and heated to 152 DEG C of blowing temperature, be then forced into blow pressure 2.3MPa, blowing after pressurize 10 minutes is obtained
Polypropylene expanded particle, because the size of polypropylene expanded particle does not meet product demand, need to support expanded beads in health bag
Life is to place more than 4 hours under normal temperature, condition of normal pressure, is then blown into storage tank and carries out pressurization 6 more than hour, the pressurization pressure
Power reaches more than 7Mpa, then is added portionwise to two hair machines the instrument of granular size is precisely controlled with pressure using the temperature of steam
Device, under the conditions of 155 DEG C of blowing temperature, blow pressure 4.5MPa, carries out second and foams, multiple such as 22- needed for obtaining product
25 times of suction ripple, guided wave PP foam material.
Above-mentioned suction ripple, the guided wave PP foam material obtained, is 10 through resistance instrument test surfaces resistance6-1011Ohm,
Conductive black content is higher, and sheet resistance is smaller, can produce seldom or not produce electrostatic as absorbing material, i.e. friction.
Embodiment 2
One kind inhales ripple, guided wave PP foam material, and its component formula is：76-80 parts of polypropylene, conductive black 15-19
Part, 2 parts of dispersant, 2 parts of foaming agent, 1 part of antioxidant；The purity of the conductive black is 99%；
Ripple, the preparation of guided wave PP foam material is inhaled to carry out according to the following steps：
A, the polypropylene weighed in proportion, dispersant, foaming agent, antioxidant be all added in homogenizer, with
1100 revs/min of speed of agitator, stirs 5 minutes, obtains premix；
B, the conductive black of weighing is added in homogenizer mixed with premix, with 1100 revs/min of stirring
Rotating speed, continues after stirring 3 minutes, and the whole materials stirred are transferred into single screw extrusion machine extrusion, then water cooling, drawing
Silk, air-dried pelletizing, obtain length for 0.8mm, quality is 0.9g, the uniform polypropylene material particulate of conductive black content；It is described
The processing temperature of single screw extrusion machine is：One 180 DEG C of area's temperature, two area's temperature are 190 DEG C, and three area's temperature are 195 DEG C, four area's temperature
Spend for 200 DEG C, five area's temperature are 215 DEG C, six area's temperature are 225 DEG C, seven area's temperature are 235 DEG C, eight area's temperature are 240 DEG C；Institute
State 1200 revs/min of the engine speed of single screw extrusion machine
C, by polypropylene material particulate carry out kettle pressure type physical blowing, i.e., in a kettle. addition water particulate is steeped completely
Cross, do not stop to be stirred and heated to 153 DEG C of blowing temperature, be then forced into blow pressure 2.5MPa, blowing after pressurize 10 minutes is obtained
Polypropylene expanded particle, because the size of polypropylene expanded particle does not meet product demand, need to support expanded beads in health bag
Life is to place more than 4 hours under normal temperature and pressure, is then blown into storage tank and carries out pressurization 6 more than hour, the moulding pressure reaches
To more than 7Mpa, then the instrument that granular size is precisely controlled using temperature and the pressure of steam is added portionwise to two hair machines,
Under the conditions of 160 DEG C of blowing temperature, blow pressure 5MPa, carry out second and foam, suction ripple, the guided wave of multiple needed for obtaining product gather
Propylene expanded material.
Above-mentioned suction ripple, the guided wave PP foam material obtained, is 10 through resistance instrument test surfaces resistance6-108Ohm, leads
Electric content of carbon black is higher, and sheet resistance is smaller, can be as electric wave (i.e. sound) material is absorbed, available for civilian KTV, cinema
Deng military anti-detections of radar etc., aviation, the navigation fuselage mitigation material such as weight and silencing function.
Embodiment 3
One kind inhales ripple, guided wave PP foam material, and its component formula is：70-76 parts of PP GRANULES, conductive black
19-25 parts, 3 parts of dispersant, 1 part of foaming agent, 1 part of antioxidant；The purity of the conductive black is 99%；
Ripple, the preparation of guided wave PP foam material is inhaled to carry out according to the following steps：
A, the polypropylene weighed in proportion, dispersant, foaming agent, antioxidant be all added in homogenizer, with
1000 revs/min of speed of agitator, stirs 3 minutes, obtains premix；
B, the conductive black of weighing is added in homogenizer mixed with premix, with 1200 revs/min of stirring
Rotating speed, continues after stirring 2 minutes, and the whole materials stirred are transferred into single screw extrusion machine extrusion, then water cooling, drawing
Silk, air-dried pelletizing, obtain length for 0.9mm, quality is 0.9g, the uniform polypropylene material particulate of conductive black content；It is described
The processing temperature of single screw extrusion machine is：One 180 DEG C of area's temperature, two area's temperature are 190 DEG C, and three area's temperature are 195 DEG C, four area's temperature
Spend for 200 DEG C, five area's temperature are 215 DEG C, six area's temperature are 225 DEG C, seven area's temperature are 235 DEG C, eight area's temperature are 240 DEG C；Institute
State 1120 revs/min of the engine speed of single screw extrusion machine；
C, by polypropylene material particulate carry out kettle pressure type physical blowing, i.e., in a kettle. addition water particulate is steeped completely
Cross, do not stop to be stirred and heated to 152.6 DEG C of blowing temperature, be then forced into blow pressure 2.3MPa, blowing after pressurize 10 minutes is obtained
, need to be by expanded beads in health bag because the size of polypropylene expanded particle does not meet product demand to polypropylene expanded particle
Health more than 4 hours, is then blown into storage tank and carries out pressurization 6 more than hour, the moulding pressure reaches more than 7Mpa, then divides
Batch it is added to two hair machines and the instrument of granular size is precisely controlled with pressure using the temperature of steam, in 150 DEG C of blowing temperature, sends out
Under the conditions of bubble pressure while 4MPa, carry out second and foam, suction ripple, the guided wave PP foam material of multiple needed for obtaining product.
Above-mentioned suction ripple, the guided wave PP foam material obtained, is 10 through resistance instrument test surfaces resistance3-105Ohm, leads
Electric content of carbon black is higher, and sheet resistance is smaller, can be as ripple, waveguide materials are inhaled, according to " faraday cup " principle, by this polypropylene
Expanded material makes birdcage, and equipotential is each put on its surface, therefore is an equipotentiality body, and ground is passed through when electric wave runs into this object
Line becomes " 0 " potential, and the inside is not influenceed by electric wave, and electromagnetic wave can not be penetrated, and forms shielding and the shielding that can not forever break through；
Military laboratory, precision instrument, anti-interference system are can be applied to, national momentous conference room, information transfer anti-interference system is various
High important examination, power system excellent conductive medium etc..
Content of the conductive black after expanding inside foam can cause different effects, and wherein electrical conductivity is therein
One testing standard, for characterizing the content of conductive black.It is to utilize the bag of PP foam material in itself to inhale ripple, guided wave performance
In conductive black is included in by capacitive, conductive black is set to absorb sound in certain content, content can excessively rebound sound, content
Very few absorption sound effect is poor.
In summary, suction ripple of the invention, guided wave PP foam material, can be made particle or molding part, with leading
Electrically, guided wave and wave absorbtion, and plain polypropylene expanded material synthesis premium properties, it is adaptable to military affairs, aviation, boat
The field such as sea, power system, life, civilian, automobile and the application of some special systems.
Claims (10)
1. one kind inhales ripple, guided wave PP foam material, it is characterised in that be mainly made up of following components：Polypropylene 60-80
Part, 10-30 parts of conductive black, 1-3 parts of dispersant, 1-5 parts of foaming agent, 1-5 parts of antioxidant；The purity of the conductive black is
90%-99.9%.
2. suction ripple according to claim 1, guided wave PP foam material, it is characterised in that：The polypropylene includes poly-
Propylene master batch or the polypropylene part of crushing.
3. suction ripple according to claim 1, guided wave PP foam material, it is characterised in that：The dispersant is scattered
Agent NNO or paraffin.
4. suction ripple according to claim 1, guided wave PP foam material, it is characterised in that：The antioxidant is anti-
One kind in oxygen agent BHT, pentaerythritol ester or 4,4 '-thiobis.
5. suction ripple according to claim 1, guided wave PP foam material, it is characterised in that：The foaming agent is 12
Sodium alkyl sulfate.
6. suction ripple according to claim 1, guided wave PP foam material, it is characterised in that：The use of the conductive black
Measure as 10-25 parts.
7. a kind of inhale ripple, the preparation method of guided wave PP foam material, its feature as any one of claim 1-6
It is, this method comprises the following steps：
A, polypropylene is mixed with dispersant, foaming agent, antioxidant after, stir, obtain premix；
B, conductive black is added in premix, continues after stirring, be transferred to single screw extrusion machine extrusion, then water cooling
But, wire drawing, air-dried pelletizing, obtain polypropylene material particulate；
C, by polypropylene material particulate carry out kettle pressure type physical blowing, in 152-155 DEG C of blowing temperature, blow pressure 2.3-
First time foaming is carried out under the conditions of 3.0MPa, polypropylene expanded particle is obtained；By polypropylene expanded particle health more than 4 hours,
Then it is blown into storage tank to pressurize 6 more than hour, finally in more than 140 DEG C of blowing temperature, enters under the conditions of blow pressure 3-10MPa
Second of foaming of row, suction ripple, the guided wave PP foam material of multiple needed for obtaining product.
8. suction ripple according to claim 7, the preparation method of guided wave PP foam material, it is characterised in that：The step
Speed of agitator is 1000-1200 revs/min in rapid a, and mixing time is 3-5 minutes；Speed of agitator is 1000- in the step b
1200 revs/min, mixing time is 1-3 minutes；The length of obtained polypropylene material particulate is 0.8-1.2mm, and quality is
0.8-1.2g。
9. suction ripple according to claim 7, the preparation method of guided wave PP foam material, it is characterised in that：In step b
The processing temperature of the single screw extrusion machine is：One 180 DEG C of area's temperature, two area's temperature are 190 DEG C, and three area's temperature are 195 DEG C, four
Area's temperature is 200 DEG C, and five area's temperature are 215 DEG C, and six area's temperature are 225 DEG C, and seven area's temperature are 235 DEG C, and eight area's temperature are 240
℃；1120-1400 revs/min of the engine speed of the single screw extrusion machine.
10. suction ripple according to claim 7, the preparation method of guided wave PP foam material, it is characterised in that：Step c
Described in health operation be normal temperature, normal pressure under place；The storage tank pressurized conditions are to be pressurized to more than 7MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710313289.6A CN107082953A (en) | 2017-05-05 | 2017-05-05 | Inhale ripple, guided wave PP foam material and preparation method thereof |
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| CN201710313289.6A CN107082953A (en) | 2017-05-05 | 2017-05-05 | Inhale ripple, guided wave PP foam material and preparation method thereof |
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| CN201710313289.6A Pending CN107082953A (en) | 2017-05-05 | 2017-05-05 | Inhale ripple, guided wave PP foam material and preparation method thereof |
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| CN (1) | CN107082953A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828134A (en) * | 2017-10-16 | 2018-03-23 | 无锡会通轻质材料股份有限公司 | A kind of preparation method of highly conductive high-fire-resistance polypropylene foaming beads |
| CN108770327A (en) * | 2018-06-22 | 2018-11-06 | 四川大学 | A kind of gradient layer foaming absorbing material and preparation method thereof |
| CN109762201A (en) * | 2018-11-27 | 2019-05-17 | 浙江众创材料科技有限公司 | A kind of fire-retardant low thermally conductive expanded polypropylene and preparation method thereof |
| CN109836700A (en) * | 2018-11-27 | 2019-06-04 | 浙江众创材料科技有限公司 | A kind of preparation method and expanded polypropylene of fire-retardant low thermally conductive expanded polypropylene |
| CN110054835A (en) * | 2019-03-27 | 2019-07-26 | 无锡会通轻质材料股份有限公司 | A kind of preparation method of high magnification conductivity type polypropylene foaming beads |
| CN110951164A (en) * | 2018-09-26 | 2020-04-03 | 合肥杰事杰新材料股份有限公司 | Conductive foamed polypropylene material and preparation method thereof |
| CN111055396A (en) * | 2019-11-05 | 2020-04-24 | 江苏昊晟塑业科技有限公司 | Forming method of high-conductivity high-flame-retardant foamed polypropylene material |
| CN111333961A (en) * | 2020-04-24 | 2020-06-26 | 苏州申赛新材料有限公司 | Wave-absorbing material and preparation method thereof |
| CN112251013A (en) * | 2020-11-05 | 2021-01-22 | 成都佳驰电子科技有限公司 | Low RCS test carrier of light broadband wave-absorbing composite material |
| CN112976461A (en) * | 2021-02-19 | 2021-06-18 | 南京航天波平电子科技有限公司 | Method and equipment for improving oxygen index of thermoplastic resin foam pyramid wave-absorbing material |
| CN113717689A (en) * | 2021-09-17 | 2021-11-30 | 和爱电磁兼容科技(安徽)有限公司 | High-stability multilayer composite wave-absorbing material and preparation method thereof |
| CN113754954A (en) * | 2021-08-24 | 2021-12-07 | 无锡敬仁电子材料科技有限公司 | Foamed polymer wave-absorbing material with high porosity and high closed porosity and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107828134A (en) * | 2017-10-16 | 2018-03-23 | 无锡会通轻质材料股份有限公司 | A kind of preparation method of highly conductive high-fire-resistance polypropylene foaming beads |
| CN108770327A (en) * | 2018-06-22 | 2018-11-06 | 四川大学 | A kind of gradient layer foaming absorbing material and preparation method thereof |
| CN110951164A (en) * | 2018-09-26 | 2020-04-03 | 合肥杰事杰新材料股份有限公司 | Conductive foamed polypropylene material and preparation method thereof |
| CN109762201A (en) * | 2018-11-27 | 2019-05-17 | 浙江众创材料科技有限公司 | A kind of fire-retardant low thermally conductive expanded polypropylene and preparation method thereof |
| CN109836700A (en) * | 2018-11-27 | 2019-06-04 | 浙江众创材料科技有限公司 | A kind of preparation method and expanded polypropylene of fire-retardant low thermally conductive expanded polypropylene |
| CN110054835B (en) * | 2019-03-27 | 2022-03-29 | 无锡会通轻质材料股份有限公司 | Preparation method of high-rate conductive polypropylene foamed beads |
| CN110054835A (en) * | 2019-03-27 | 2019-07-26 | 无锡会通轻质材料股份有限公司 | A kind of preparation method of high magnification conductivity type polypropylene foaming beads |
| CN111055396A (en) * | 2019-11-05 | 2020-04-24 | 江苏昊晟塑业科技有限公司 | Forming method of high-conductivity high-flame-retardant foamed polypropylene material |
| CN111333961A (en) * | 2020-04-24 | 2020-06-26 | 苏州申赛新材料有限公司 | Wave-absorbing material and preparation method thereof |
| CN112251013A (en) * | 2020-11-05 | 2021-01-22 | 成都佳驰电子科技有限公司 | Low RCS test carrier of light broadband wave-absorbing composite material |
| CN112976461A (en) * | 2021-02-19 | 2021-06-18 | 南京航天波平电子科技有限公司 | Method and equipment for improving oxygen index of thermoplastic resin foam pyramid wave-absorbing material |
| CN113754954A (en) * | 2021-08-24 | 2021-12-07 | 无锡敬仁电子材料科技有限公司 | Foamed polymer wave-absorbing material with high porosity and high closed porosity and preparation method thereof |
| CN113717689A (en) * | 2021-09-17 | 2021-11-30 | 和爱电磁兼容科技(安徽)有限公司 | High-stability multilayer composite wave-absorbing material and preparation method thereof |
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