CN102775652B - Thermoplastic elastomer micropore foaming material and preparation method thereof - Google Patents
Thermoplastic elastomer micropore foaming material and preparation method thereof Download PDFInfo
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- CN102775652B CN102775652B CN201210292769.6A CN201210292769A CN102775652B CN 102775652 B CN102775652 B CN 102775652B CN 201210292769 A CN201210292769 A CN 201210292769A CN 102775652 B CN102775652 B CN 102775652B
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92885—Screw or gear
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
Abstract
The invention discloses a thermoplastic elastomer micropore foaming material and a preparation method thereof. The material comprises the following componnets in parts by weight: 70-95 parts of thermoplastic elastomer and 5-30 parts of foaming agent master batch. The preparation method comprises the following steps of: based on weight parts, placing 50-90 parts of compatibilizers, 6-30 parts of foaming agent and 4-20 parts of auxiliary foaming agents into a double-roller open mill for mixing to prepare foaming agent master batch; sequentially adding 100 parts of matrix rubber, 5-10 parts of active agent, 20-100 parts of reinforced fillers, 0-20 parts of softening agents, 0.5-5 parts of vulcanizing agents and 1-10 parts of accelerating agents into the open mill or an internal mixer for uniformly mixing to prepare a rubber compound; chopping the rubber compound and uniformly mixing the chopped rubber compound with 10-70 parts of plastics by a high-speed mixer; and extruding and pelleting the mixture to prepare thermoplastic vulcanizate (TPV) aggregates; and uniformly mixing the foaming agent master batch with the TPV aggregates to extrude and form again to prepare a high-performance micropore foaming material for vibration attenuation. The TPV foaming material is high in physical and mechanical properties and thermal ageing performance, is simple in process, can be widely popularized, and is suitable for being used in the field of rail transit.
Description
Technical field:
The present invention relates to a kind of thermoplastic elastomer microcellular foam material and preparation method thereof, in particular to a kind of high-performance dynamic vulcanization thermoplastic elastomer (TPV) microcellular foam material and preparation method thereof, this material can be used as elastic damping material, is mainly used in field of track traffic.
Background technology:
Thermoplastic sulfurized rubber (TPV) is with the fastest developing speed in thermoplastic elastomer, apply maximum classes, it is formed in thermoplastic resin by the rubber disperse of complete cure, have the elastomeric property of conventional rubber and the thermoplastic processability of resin concurrently, available traditional device of plastic processing and working method.TPV have wide in variety, performance is wide, heat resisting temperature is high, ageing-resistant performance is excellent, permanent set at high temperature is little, excellent in dimensional stability.TPV can not only meet the performance requriements required for people, and for save energy, simplify production technique, increase economic efficiency, reduce labour intensity, particularly environment protection is also served and actively and effectively acts on.The dynamic vulcanization process of TPV is actually rubber and plastic phase transition process, before the vulcanization of rubber, rubber is as external phase, Plastic dispersion is among rubber, and when dynamic vulcanization, first there is crosslinking reaction in rubber, then crosslinked rubber is fractured into molecule under high shear, be dispersed in thus in the external phase of molten plastic, form so-called " sea-island " structure, this just make TPV simultaneously the have excellent processability given by resin external phase and snappiness given mutually by vulcanized rubber microparticulate.
Foaming polymer material refers to the family macromolecule material formed in material by a large amount of gas dispersion, have light weight, heat insulation, the characteristic such as sound-absorbing, vibration damping, and dielectric properties is better than matrix resin, have many uses.Microcellular foam material can under the prerequisite maintaining the necessary mechanical property of material, significantly can reduce the weight of goods, thus realize the object reducing raw material consumption and reduction production cost, simultaneously, the cell morphology that hole density is higher, aperture is less also gives a lot of unfoamed material of microcellular foam material and the incomparable excellent properties of traditional foam material, as having higher shock strength, toughness and anti-fatigue life etc.Current cellular plastic and mipor rubber foaming have had more research, TPV excellent performance, be applicable to being applied in field of track traffic, but to the also rare research of TPV foaming aspect, the TPV foam material being applied to field of track traffic are less.Preparation TPV material combines with foam process by this patent, one time to produce TPV foam material, and have cost low, production efficiency is high, the feature of foaming TPV material excellent performance.
Summary of the invention:
The invention reside in a kind of high-performance dynamic vulcanization thermoplastic elastomer (TPV) microcellular foam material that a kind of excellent combination property is provided, this material has that environmental protection, production efficiency are high, the feature of excellent performance, and another object of the present invention is the preparation technology providing above-mentioned TPV microcellular foam material.TPV material preparation process combines with macromolecular material foaming process by the present invention, utilize forcing machine shearing action by blowing agent concentrate and TPV dispersed, auxiliary with vulcanizer and promotor etc., at high temperature impel rubber part sulfuration, and realize controlling vulcanization rate and whipping agent decomposition rate by temperature and screw speed, regulate abscess-size and expansion ratio, and utilize cross-head mouth molding pressure to reduce rapidly to realize foaming, obtain the tiny homogeneous foam material of abscess, this material has lower springrate ratio (controlling below 1.5 springrate ratio of damping elastomer backing plate) abroad, ageing-resistant performance and physical and mechanical properties.
The object of the invention is to be achieved through the following technical solutions:
A kind of high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material, this TPV microcellular foam material comprises counts 70-95 part thermoplastic elastomer and 5-30 part blowing agent concentrate two portions by weight, counts by weight: plastics 10-70 part in thermoplastic elastomer
Base rubber 100 parts
Vulcanizing agent 0.5-5 part
Promotor 1-10 part
Reinforced filling 20-100 part
Promoting agent 5-10 part
Tenderizer 0-20 part
Count by weight in blowing agent concentrate: expanding material 50-90 part
Whipping agent 6-30 part
Blowing promotor 4-20 part
Rubber is wherein one or both or two or more blends in natural rubber, trans-isoprene rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber, terpolymer EP rubber, paracril, isoprene-isobutylene rubber, chloroprene rubber; Plastics are one or both or two or more blends in polyethylene, polypropylene, polymeric amide, polystyrene, styrene/acrylonitrile copolymer, third ethylene/propene nitrile/butadienecopolymer, polycarbonate; Vulcanizing agent is Sulfur, dicumyl peroxide (DCP), wherein Sulfur 0.5-1.5 part, DCP2-5 part; Described promotor is TT, CZ, DM, TAIC, wherein TT0.5-1.2 part, CZ0.5-1.5 part, DM0.5-1 part, TAIC1-4 part, promoting agent is zinc oxide, stearic acid, wherein zinc oxide 4-6 part, stearic acid 1-4 part, tenderizer is naphthenic oil, aromatic hydrocarbon oil, paraffin oil, DOP, DBP or ointment.
Reinforced filling is carbon black or white carbon black or both mixtures, and carbon black comprises the carbon black of the various kind such as N100 series, N200 series, N330 is serial, N400 is serial, N500 is serial, N600 is serial, N700 is serial, N800 is serial, N900 is serial, Sweet natural gas semi-reinforcing hydrocarbon black, Sweet natural gas thermally oxidized black and mixed gas carbon black and specification; White carbon black comprises precipitated silica or the thermal silica of various particle diameter;
Expanding material is olefinic copolymer, optimal ethylene-octene copolymer POE or ethylene-vinyl acetate EVA; Blowing agent H or blowing agent AC or whipping agent OBSH;
Blowing promotor is the one in Zinic stearas, stearic acid, zinc oxide, urea.
Poromerics preparation of the present invention comprises the following steps and processing condition:
Content as described above in book weighs each component materials, then operates as follows:
1), by expanding material be placed in two roller mill (roller temperature 80-100 DEG C), add whipping agent and blowing promotor after plasticating 1-4 minute, mixing 3-8min obtains blowing agent concentrate simultaneously.
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined successively temperature is in 30-60 DEG C of mill, mixing 15-25min, or join successively in Banbury mixer, temperature control 80-110 DEG C, rotor speed 40-100r/min, mixing 10-20min, makes rubber unvulcanizate after material dispersion is even.
3), mix after rubber unvulcanizate chopping process with plastic warp high-speed mixer, and adopt forcing machine extruding pelletization to prepare TPV pellet, wherein the temperature of forcing machine successively: a district 110-160 DEG C, two district 120-160 DEG C, three district 130-180 DEG C, four district 140-220 DEG C, five district 140-220 DEG C, screw speed 30-150rpm.
4) blowing agent concentrate, step 1) obtained pulverizes rear and that step 3) is obtained TPV pellet after high-speed mixer Homogeneous phase mixing, join in singe screw or twin screw extruder simultaneously, the temperature of single screw extrusion machine is once: a district 110-160 DEG C, two district 120-160 DEG C, three district 130-180 DEG C, four district 140-220 DEG C, five district 140-220 DEG C, screw speed 30-150rpm; Wherein twin screw extruder each section of temperature is followed successively by: screw rod one district 110-160 DEG C, screw rod two district 110-180 DEG C, screw rod three district 120-190 DEG C, four district 120-200 DEG C, five district 120-210 DEG C, six district 130-220 DEG C, seven district 140-220 DEG C, eight district 140-220 DEG C, screw speed is set to 20-200rpm, preferred twin screw extruder, adopt flat port mould, after extruding blend cooling and shaping, be high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material.
Embodiment
Below in conjunction with example, the present invention will be further described in detail.
Table one is the formula table in each embodiment
Table Design and claim do not meet, and if rubber number is 30-90 part, are then for 30-90 part after rubber, vulcanizing agent, promotor, reinforced filling, promoting agent, tenderizer mixing by form
Table one Example formulations table
Embodiment 1
Choose the formula one in formula table, step is as follows:
1), by expanding material be placed in two roller mill (roller temperature 80 DEG C), add whipping agent and blowing promotor after plasticating 3 minutes, mixing 5min obtains blowing agent concentrate simultaneously.
2), by rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor joining temperature is successively in the mill of 60 DEG C, and mixing 25min, is uniformly dispersed, and is prepared into rubber unvulcanizate.
3), by after rubber unvulcanizate chopping process mix with plastic warp high-speed mixer, and adopt forcing machine extruding pelletization to prepare TPV pellet, wherein the temperature of forcing machine successively: 140 DEG C, a district, two 150 DEG C, districts, three 160 DEG C, districts, four 170 DEG C, districts, five 160 DEG C, districts, screw speed 30rpm.
4) blowing agent concentrate, step 1) obtained pulverizes rear and that step 3) is obtained TPV pellet after high-speed mixer Homogeneous phase mixing, join in twin screw extruder simultaneously, each section of temperature is followed successively by: 110 DEG C, screw rod one district, 110 DEG C, screw rod two district, 120 DEG C, screw rod three district, 120 DEG C, 4th district, five 120 DEG C, districts, six 130 DEG C, districts, seven 140 DEG C, districts, eight 140 DEG C, districts, screw speed is set to 20rpm, forcing machine adopts flat port mould, is high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding blend cooling and shaping.
Embodiment 2
Choose the formula two in formula table, step is as follows:
(1) expanding material is placed in two roller mill (roller temperature 100 DEG C), add whipping agent and blowing promotor after plasticating 1 minute, mixing 3min obtains blowing agent concentrate simultaneously.
(2) rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor are joined successively in Banbury mixer, temperature 80 DEG C, rotor speed 100r/min, mixing about 10min, is uniformly dispersed, is prepared into rubber unvulcanizate.
(3) mix after rubber unvulcanizate chopping process with plastics, prepare TPV pellet after adopting forcing machine extruding pelletization, wherein the temperature of forcing machine successively: 140 DEG C, a district, two 150 DEG C, districts, three 160 DEG C, districts, four 160 DEG C, districts, five 160 DEG C, districts, screw speed 90rpm.
(4) thermoplastic sulfurized rubber and blowing agent concentrate are pulverized after high-speed mixer mixes, high-performance microcellular foam material can be obtained through twin screw extruder extrusioning shaping.Wherein extruder temperature successively: 130 DEG C, a district, 130 DEG C, 2nd district, 140 DEG C, 3rd district, 150 DEG C, 4th district, five 150 DEG C, districts, six 150 DEG C, districts, seven 150 DEG C, districts, and eight 155 DEG C, districts, screw speed is set to 120rpm.
Embodiment 3
Choose the formula three in formula table, step is as follows:
(1) expanding material is placed in two roller mill (roller temperature 90 DEG C), add whipping agent and blowing promotor after plasticating 2 minutes, mixing 8min obtains blowing agent concentrate simultaneously.
(2) rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined successively temperature is in the mill of 60 DEG C, and mixing about 20min, is uniformly dispersed, is prepared into rubber unvulcanizate.
(3) mix after rubber unvulcanizate chopping process with plastics, prepare TPV pellet after adopting forcing machine extruding pelletization, wherein the temperature of forcing machine successively: 110 DEG C, a district, two 120 DEG C, districts, three 130 DEG C, districts, four 140 DEG C, districts, five 140 DEG C, districts, screw speed 60rpm.
(4) thermoplastic sulfurized rubber and blowing agent concentrate are pulverized after high-speed mixer mixes, high-performance microcellular foam material can be obtained through twin screw extruder extrusioning shaping.Wherein extruder temperature successively: 110 DEG C, a district, 110 DEG C, 2nd district, 120 DEG C, 3rd district, 120 DEG C, 4th district, five 120 DEG C, districts, six 130 DEG C, districts, seven 140 DEG C, districts, and eight 140 DEG C, districts, screw speed is set to 200rpm.
Embodiment 4
Choose the formula four in formula table, step is as follows:
1), by expanding material be placed in two roller mill (roller temperature 100 DEG C), add whipping agent and blowing promotor after plasticating 2 minutes, mixing 4min obtains blowing agent concentrate simultaneously.
2), by rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor joining temperature is successively in 60 DEG C of mills, and mixing about 20min, is uniformly dispersed, is prepared into rubber unvulcanizate.
3), by after rubber unvulcanizate chopping process mix with plastic warp high-speed mixer, and adopt forcing machine extruding pelletization to prepare TPV pellet, wherein the temperature of forcing machine successively: 170 DEG C, a district, two 180 DEG C, districts, three 200 DEG C, districts, four 210 DEG C, districts, five 220 DEG C, districts, screw speed 150rpm.
4) blowing agent concentrate, step 1) obtained pulverizes rear and that step 3) is obtained TPV pellet after high-speed mixer Homogeneous phase mixing, join in twin screw extruder simultaneously, each section of temperature is followed successively by: 140 DEG C, screw rod one district, 150 DEG C, screw rod two district, 150 DEG C, screw rod three district, 160 DEG C, 4th district, five 170 DEG C, districts, six 180 DEG C, districts, seven 180 DEG C, districts, eight 180 DEG C, districts, screw speed is set to 120rpm, forcing machine adopts flat port mould, is high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding blend cooling and shaping.
Embodiment 5
Choose the formula five in formula table, step is as follows:
1), by expanding material be placed in two roller mill (roller temperature 90 DEG C), add whipping agent and blowing promotor after plasticating 2 minutes, mixing 5min obtains blowing agent concentrate simultaneously.
2), by rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor joining temperature is successively in 50 DEG C of mills, and mixing about 25min, is uniformly dispersed, is prepared into rubber unvulcanizate.
3), by after rubber unvulcanizate chopping process mix with plastic warp high-speed mixer, and adopt single screw extrusion machine extruding pelletization to prepare TPV pellet, wherein the temperature of forcing machine successively: 120 DEG C, a district, two 130 DEG C, districts, three 140 DEG C, districts, four 140 DEG C, districts, five 150 DEG C, districts, screw speed 150rpm.
4) blowing agent concentrate, step 1) obtained pulverizes rear and that step 3) is obtained TPV pellet after high-speed mixer Homogeneous phase mixing, join in single screw extrusion machine simultaneously, each section of temperature is followed successively by: 110 DEG C, a district, two 120 DEG C, districts, three 130 DEG C, districts, four 140 DEG C, districts, five 140 DEG C, districts, screw speed 150rpm, forcing machine adopts flat port mould, is high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material after extruding blend cooling and shaping.
Table two foaming material performance table
As seen from the above embodiment, TPV foam material provided by the present invention has excellent physical and mechanical properties and heat aging performance, extensively can promote, be applicable to being applied to field of track traffic.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (9)
1. thermoplastic elastomer microcellular foam material and preparation method thereof, it is characterized in that described TPV microcellular foam material comprises and count 70-95 part thermoplastic elastomer and 5-30 part blowing agent concentrate two portions by weight, count by weight in thermoplastic elastomer: plastics 10-70 part
Base rubber 100 parts
Vulcanizing agent 0.5-5 part
Promotor 1-10 part
Reinforced filling 20-100 part
Promoting agent 5-10 part
Tenderizer 0-20 part
Count by weight in blowing agent concentrate: expanding material 50-90 part
Whipping agent 6-30 part
Blowing promotor 4-20 part;
Measure each component materials by batching scale, then operate as follows:
1), by expanding material be placed in two roller mill (roller temperature 80-100 DEG C), add whipping agent and blowing promotor after plasticating 1-4 minute, mixing 3-8min obtains blowing agent concentrate simultaneously;
2), rubber, promoting agent, reinforced filling, tenderizer, vulcanizing agent and promotor being joined successively temperature is in 30-60 DEG C of mill, mixing 15-25min, or join successively in Banbury mixer, temperature control 80-110 DEG C, rotor speed 40-100r/min, mixing 10-20min, makes rubber unvulcanizate after material dispersion is even;
3), mix after rubber unvulcanizate chopping process with plastic warp high-speed mixer, and adopt forcing machine extruding pelletization to prepare TPV pellet, wherein the temperature of forcing machine successively: a district 110-160 DEG C, two district 120-160 DEG C, three district 130-180 DEG C, four district 140-220 DEG C, five district 140-220 DEG C, screw speed 30-150rpm;
4) blowing agent concentrate, step 1) obtained pulverizes rear and that step 3) is obtained TPV pellet after high-speed mixer Homogeneous phase mixing, join in singe screw or twin screw extruder simultaneously, the temperature of single screw extrusion machine is followed successively by: a district 110-160 DEG C, two district 120-160 DEG C, three district 130-180 DEG C, four district 140-220 DEG C, five district 140-220 DEG C, screw speed 30-150rpm; Wherein twin screw extruder each section of temperature is followed successively by: screw rod one district 110-160 DEG C, screw rod two district 110-180 DEG C, screw rod three district 120-190 DEG C, four district 120-200 DEG C, five district 120-210 DEG C, six district 130-220 DEG C, seven district 140-220 DEG C, eight district 140-220 DEG C, screw speed is set to 20-200rpm, preferred twin screw extruder, adopt flat port mould, after extruding blend cooling and shaping, be high-performance dynamic vulcanization thermoplastic elastomer TPV microcellular foam material.
2. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, is characterized in that described rubber is one or both or two or more blends in natural rubber, trans-isoprene rubber, styrene-butadiene rubber(SBR), cis-1,4-polybutadiene rubber, terpolymer EP rubber, paracril, isoprene-isobutylene rubber, chloroprene rubber.
3. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, is characterized in that described plastics are one or both or two or more blends in polyethylene, polypropylene, polymeric amide, polystyrene, styrene/acrylonitrile copolymer, third ethylene/propene nitrile/butadienecopolymer, polycarbonate.
4. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, is characterized in that described vulcanizing agent is Sulfur, dicumyl peroxide (DCP), wherein Sulfur 0.5-1.5 part, DCP2-5 part; Described promotor is TT, CZ, DM, TAIC, wherein TT0.5-1.2 part, CZ0.5-1.5 part, DM0.5-1 part, TAIC1-4 part, promoting agent is zinc oxide, stearic acid, wherein zinc oxide 4-6 part, stearic acid 1-4 part, tenderizer is naphthenic oil, aromatic hydrocarbon oil, paraffin oil, DOP, DBP or ointment.
5. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, it is characterized in that described reinforced filling is carbon black or white carbon black or both mixtures, carbon black comprises the carbon black of the various kind such as N100 series, N200 series, N330 is serial, N400 is serial, N500 is serial, N600 is serial, N700 is serial, N800 is serial, N900 is serial, Sweet natural gas semi-reinforcing hydrocarbon black, Sweet natural gas thermally oxidized black and mixed gas carbon black and specification; White carbon black comprises precipitated silica or the thermal silica of particle diameter.
6. a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, is characterized in that described expanding material is olefinic copolymer.
7., according to a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, it is characterized in that described is blowing agent H or blowing agent AC or whipping agent OBSH.
8., according to a kind of thermoplastic elastomer microcellular foam material according to claim 1 and preparation method thereof, it is characterized in that described blowing promotor is the one in Zinic stearas, stearic acid, zinc oxide, urea.
9., according to a kind of thermoplastic elastomer microcellular foam material according to claim 6 and preparation method thereof, it is characterized in that described olefinic copolymer expanding material is ethylene-octene copolymer POE or ethylene-vinyl acetate EVA.
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| CN103421216A (en) * | 2013-08-30 | 2013-12-04 | 安徽金科橡塑制品有限公司 | Closed-hole foamed rubber |
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