CN102352070A - Cross-linking agent masterbatch used in dynamic sulfidation preparation of thermoplastic rubber and its prepared thermoplastic rubber - Google Patents
Cross-linking agent masterbatch used in dynamic sulfidation preparation of thermoplastic rubber and its prepared thermoplastic rubber Download PDFInfo
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- CN102352070A CN102352070A CN 201110191086 CN201110191086A CN102352070A CN 102352070 A CN102352070 A CN 102352070A CN 201110191086 CN201110191086 CN 201110191086 CN 201110191086 A CN201110191086 A CN 201110191086A CN 102352070 A CN102352070 A CN 102352070A
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Abstract
The invention discloses a cross-linking agent masterbatch used in dynamic sulfidation preparation of thermoplastic rubber and its prepared thermoplastic rubber. the cross-linking agent masterbatch is prepared by mixing liquid peroxide and porousness thermoplastic resin under the normal temperature; the weight of liquid peroxide accounts for 10-30% of that of cross-linking agent masterbatch; the porousness thermoplastic resin is a copolymer containing an ethane, propylene and butylene structural unit. The cross-linking agent masterbatch is solid which is convenient for weighing, and the cross-linking agent is capable of overcoming the disadvantages of inconvenient liquid cross-linking agent weighing and difficult complete material absorption, raising the crosslinking degree of the rubber phase, mitigating the PP degradation and improving the mechanical property and processing performance of the product. The cross-linking agent masterbatch and the prepared thermoplastic rubber by using the dynamic sulfidation technology has high tensile strength and low permanent deformation by compression and stable fusion index, the appearance of the product has no pocking mark.
Description
Technical field
The invention belongs to the TPR technical field, be specifically related to a kind of dynamic vulcanization that is applied to and prepare the linking agent masterbatch of TPR and the TPR of preparation thereof.
Background technology
Dynamic full-sulfuration thermoplastic rubber (Thermoplastic Vulcanizate is called for short TPV) is the one type of blending thermoplastic elastomer material that adopts the preparation of dynamic full vulcanization technology.When thermoplastic resin and rubber melt blending, rubber phase issues biochemical crosslinked in the linking agent effect, makes it fragmentation and becomes in a large amount of micron-level crosslinked rubber grains and the homodisperse thermoplastic resin through applying the intensive mechanical shearing.
The linking agent that is used for TPV has sulphur, resol, superoxide and platinum catalyst etc.The problem that when adopting sulfur cross-linking, the goods smell is big, exist reversion is seldom used now.Adopt the crosslinked TPV of resol, its over-all properties is better, and it is yellow that shortcoming is that phenolic crosslinkers is, and can only prepare the goods of dark color or black, and product absorbs water easily, and catalyst residue heavy metal tin simultaneously receives certain restriction in the application of food, toy industry.It is pure white that the platinum catalystsystem can prepare color, satisfies the TPV of medical treatment and food requirement, yet it is responsive to component impurity, cost is higher.Adopt peroxide cross-linking system can overcome the phenolic system color than shortcomings such as dark and heavy metal management and control risks, its cost is more much lower than platinum catalystsystem, along with implementing in full of ROHS, WEEE and REACH instruction, progressively demonstrates excellent competitive edge.Therefore, the peroxide crosslinking TPV of Development of New Generation has important practical significance.
When adopting peroxide crosslinking; Can select Di Cumyl Peroxide 99 (DCP), two-(t-butyl peroxy sec.-propyl) benzene (BIPB), 2,5-dimethyl--2,5-bis(t-butylperoxy) hexin, 2; 5-dimethyl--2,5-bis(t-butylperoxy) hexane (two 2 5) etc.Because the degradation production smell of DCP and BIPB is bigger, in practical application, receives a lot of restrictions.Two 25 degradation production smell is low, itself meet the FDA requirement again, is the optimal selection of TPV linking agent.
Yet two 25 is linking agents of liquid, and its addition is general more than 2%, can not be absorbed fully by material when directly adding, and the accuracy of prescription receives bigger influence, and all not too convenient in storage and operation, therefore performance of products also suffers damage.
When adopting peroxide crosslinking, generally also need add components such as additional crosslinker such as isocyanic ester (TAC), different urine cyanate (TAIC), low molecular weight polybutadiene and Acrylic Acid Monomer class, the operation in process of production of these liquid ingredients is convenient not as powder.
When adopting liquid meter to claim to add said components, if said components is mixed same weighing balance of employing, additional crosslinker is easy to the polymerization reaction take place in the ingress of twin screw extruder, causes that viscosity increases and the obstruction charging.When separately measuring, component concentration is lower, and the accuracy of metering is affected undoubtedly, if adopt Yellow Protopet 2A to dilute, the hardness of product can change again, the operability variation of production.Therefore, invent a kind of convenience, flexibly, the addition means of accurate measurement is very urgent for the stable peroxide crosslinking TPV of processability.
Summary of the invention
The present invention seeks to overcome the deficiency of prior art; A kind of linking agent masterbatch is provided; This masterbatch is adsorbed on liquid cross-linker in porous thermoplastic resin's the micropore; When being applied to dynamic full-sulfuration thermoplastic rubber and preparing, can solve linking agent and add inaccurate, inconvenient operation, the uneasy congruent problem of storage, and the TPV product that obtained performance is better, stability is better.
Another object of the present invention is to the TPR that provides said linking agent masterbatch to prepare.
Above-mentioned purpose of the present invention is achieved through following technical scheme:
A kind ofly be applied to the linking agent masterbatch that dynamic vulcanization prepares TPR, be mixed with at normal temperatures by liquid peroxide and porousness thermoplastic resin and obtain; Said liquid peroxide accounts for 10 ~ 30% of linking agent master batch weight; Said porousness thermoplastic resin is the multipolymer that contains ethene, propylene and butylene structural unit.Liquid peroxide is easy to formed a kind of linking agent masterbatch of solid particulate by the absorption of porousness thermoplastic resin, and the reactive behavior of peroxide cross-linking agent keeps good simultaneously.The composition and the terpolymer EP rubber of this porousness thermoplastic resin are closely similar; Therefore; The consistency of itself and terpolymer EP rubber is superior to and polyacrylic consistency; Can precedence partition in the melt blending process terpolymer EP rubber mutually in, favourable for improving the crosslinked of rubber phase with the degraded that alleviates PP.
As a kind of most preferably scheme, said liquid peroxide most preferably is and accounts for 20% of linking agent master batch weight.
Said liquid peroxide; The liquid peroxide of using always when preparing TPR for the employing dynamic vulcanization technology, as a kind of preferred version, said liquid peroxide is preferably 2; 5-dimethyl--2; 5-bis(t-butylperoxy) hexin or 2,5-dimethyl--2, any one or its mixture in the 5-bis(t-butylperoxy) hexane.
As a kind of most preferably scheme, said liquid peroxide most preferably is 2,5-dimethyl--2,5-bis(t-butylperoxy) hexane.
As a kind of preferred version, in the said porousness thermoplastic resin, contain the inside hole of 20 ~ 40 volume %, these holes connect in the inside of resin continuously, easily the adsorptive liquid superoxide.
As a kind of preferred version, the melt flow index of said porousness thermoplastic resin be preferably 20g/10min (230 ℃, 2.16KG).
Said porousness thermoplastic resin can foam through the multipolymer to ethene, propylene and butylene or when ethene, propylene and butylene copolymerization, add porous catalyst and prepare.
A kind of TPR, form by the component of counting by weight percentage as follows:
Vestolen PP 7052 5～40%, terpolymer EP rubber 10～50%, filler 0～40%, linking agent masterbatch 2～15%, crosslinking coagent 0.5～10%, oxidation inhibitor 0.01～2% and processing aid 0.01～10%;
Said linking agent masterbatch is above-mentioned linking agent masterbatch;
Said TPR adopts dynamic vulcanization technology to prepare.
As a kind of preferred version, the preferred HOPP of said Vestolen PP 7052, its melt flow index 0.2～5g/10min, the DSC fusing point is greater than 160 ℃.
As a kind of preferred version; The mooney viscosity of said terpolymer EP rubber (ML 1+4,100 ℃) is preferably 25 ~ 90, and component is preferably 0.5 ~ 10 weight % that unsaturated the 3rd monomer accounts for terpolymer; Ethene accounts for 60 ~ 85 weight % of terpolymer, and surplus is a propylene.
As a kind of more preferably scheme; The mooney viscosity of said terpolymer EP rubber (ML 1+4,100 ℃) more preferably 35 ~ 80, more preferably unsaturated the 3rd monomer of component accounts for 2 ~ 8 weight % of terpolymer; Ethene accounts for 65 ~ 75 weight % of terpolymer, and surplus is a propylene.
As a kind of preferred version, said crosslinking coagent is preferably one or more the mixture in liquid polybutadiene, cyanate, isocyanates or the esters of acrylic acid material; Most preferably be the RICON153D of CRAY VALLEY company, this crosslinking coagent is a kind of low molecular weight polybutadiene to be dispersed in the mixture that obtains in the Calucium Silicate powder, is a kind of pressed powder of flowable, adds and very easy to use.The purpose that additional crosslinker adds is further to improve degree of crosslinking, alleviates radical and causes the PP degraded.
Said filler is this area customary fillers of improving the product mechanical property commonly used, like talcum powder, permanent white, lime carbonate, wollastonite, kaolin, clay, ceramic fine bead, spun glass etc.
As a kind of preferred version, said inhibitor is one or more the mixture in phenolic antioxidant or the phosphite ester kind antioxidant.
As a kind of more preferably scheme, said phenolic antioxidant is BHT, 1010,1076 or 1790 more preferably.
As a kind of more preferably scheme, said phosphite ester kind antioxidant more preferably 168,626.
As a kind of preferred version, said processing aid is one or more the mixture in Triple Pressed Stearic Acid, stearate, MOX, silicone oil or the silicone.Processing aid can improve the processing characteristics of product in melting mixing or follow-up molding process.
In addition, as required, the present invention is not precluded within and adds various tinting materials on the basis of said components characteristic, and the adding of tinting material is to give material certain color, and tinting material comprises components such as inorganic colourant, organic colorant.
The preparation method of said TPR is characterized in that, adopts melt-blending process to carry out, and raw materials mix step in melting mixing equipment is accomplished dynamic vulcanization.
As a kind of preferred version, said preparation method is preferably, and will carry out premix except that linking agent masterbatch, all components the additional crosslinker, obtains Preblend, mixes with linking agent masterbatch, additional crosslinker again, adopts melting mixing equipment to carry out dynamic vulcanization.
As a kind of preferred version, described melting mixing evaluation method selecting optimal equipment is that single screw extrusion machine, twin screw are extruded, Banbury mixer, two rotors continuous mixing equipment, and processing condition are 160～250 ℃ of temperature, rotating speed 30～1200rpm.
The gained TPR has advantages such as tensile strength is higher, the compression permanentset is lower, outward appearance does not have pit, melting index is more stable, has a good application prospect in fields such as automobile, electronic apparatus, building, daily necessities.
Compared with prior art, the present invention has following beneficial effect:
(1) linking agent masterbatch according to the invention is a solid, is convenient to accurate weighing, is convenient to operation, stores safer; Because the linking agent masterbatch is more convenient than the liquid cross-linker weighing, need not dispose liquid meter and claim, has practiced thrift equipment investment cost greatly;
(2) linking agent masterbatch according to the invention is selected a kind of structure and the composition porousness thermoplastic resin similar with terpolymer EP rubber for use, its can precedence partition in the melt blending process terpolymer EP rubber mutually in, help improving the degree of crosslinking of rubber phase; In addition, this porousness thermoplastic resin is preferential degraded under the effect of superoxide, can be used as a kind of PP degraded protective material, can alleviate the degraded of PP, thereby improve the mechanical property and the processing characteristics of product;
(3) TPR that makes of the present invention has higher draw tensile strength, lower compression permanentset, more stable melting index, and the outward appearance of its product does not have pit.
Embodiment
Below in conjunction with specific embodiment the present invention is done description further, but specific embodiment is not done any qualification to the present invention.
The performance test methods of peroxide crosslinking TPV material of the present invention is following:
Processing flowability: the melt flow index of measuring under 230 ℃ of temperature, the load 5Kg condition (MI) characterizes.
The test of tensile property: carry out according to ASTM D412; Rate of extension 500mm/min; Adopt the thin slice of heat pressing forming machines mold pressing thickness 2～4mm under 180 ℃ of conditions, adopt omnipotent sampling machine to prepare the 5A tensile bars, measure the tensile strength and the elongation at break of material.
Compression permanentset: carry out according to ASTM D395 method, adopt A type sample.
Squeeze the sheet outward appearance: adopt the single screw extrusion machine of L/D=30:1 to extrude the thin slice of thickness 0.6mm, observe outward appearance whether smooth, have or not pit.
The Vestolen PP 7052 that the present invention adopts is the PP T30S of Lanzhou petrochemical industry, and melt flow index is 2.5g/10min, and fusing point is 163 ℃; EPDM adopts the NORDLE IP4770 EL of DOW company, and ethylene content 70wt%, the 3rd monomer are for ENB content is 5%, mooney viscosity 70; The product of two two or five employing Aksu companies, the porousness thermoplastic resin adopts the HIFAX CA7153S of BASELL company, and other starting material are all the commercially available prod.
Embodiment 1
HIFAX CA7153S two two or five, 8KG with 2KG adopt mixing machine to mix at normal temperatures by weight percentage: earlier with HIFAX CA7153S to going into mixing machine, open the mixing machine stirring arm, rotating speed 50～1000rpm.Add twoly two or five while stirring, add the continued that finishes and mixed 2 minutes, make two two or the five linking agent masterbatch MB-1 that contain 20 weight %.
Embodiment 2
Mix and add by weight linking agent masterbatch MB-1 from main feed opening with the RICON 153D of the Zinic stearas of the oxidation inhibitor 168 of the antioxidant 1010 of the terpolymer EP rubber of the Vestolen PP 7052 of 25KG, 40KG, 0.2KG, 0.2KG, 0.2KG, 2KG and 5KG; 27.4KG white mineral oil adopt liquid meter to claim to add from the 4th～6 joint barrel; Adopt twin screw to extrude and carry out dynamic vulcanization; One step preparation thermoplastic elastic material; The temperature of twin screw extruder heating zone is set at: 160 ℃, 170 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ (order is to head from feed opening), rotating speed 500rpm.
Embodiment 3
By weight the Vestolen PP 7052 of 15KG, the terpolymer EP rubber of 35KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend A3.
Preblend A3 and the RICON 153D of 2KG, the linking agent masterbatch MB-1 of 10KG of 88KG are mixed; Adopt twin screw to extrude to carry out dynamic vulcanization and prepare thermoplastic elastic material; The temperature of twin screw extruder heating zone is set at: 160 ℃, 170 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ (order is to head from feed opening), rotating speed 800rpm.
Embodiment 4
By weight the Vestolen PP 7052 of 10KG, the terpolymer EP rubber of 35KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 50rpm, to carry out melting mixing and prepare Preblend A4.
Preblend A4 and the RICON 153D of 2KG, the linking agent masterbatch MB-1 of 15KG of 83KG are mixed; Adopt twin screw to extrude to carry out dynamic vulcanization and prepare thermoplastic elastic material; The temperature of twin screw extruder heating zone is set at: 160 ℃, 170 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ (order is to head from feed opening), rotating speed 600rpm.
Embodiment 5
By weight the Vestolen PP 7052 of 15KG, the terpolymer EP rubber of 32KG, the kaolin of 10KG, the white mineral oil of 25.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend A5.
Preblend A5 and the RICON 153D of 2KG, the linking agent masterbatch MB-1 of 15KG of 83KG are mixed; Adopt twin screw to extrude to carry out dynamic vulcanization and prepare thermoplastic elastic material; The temperature of twin screw extruder heating zone is set at: 160 ℃, 170 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ (order is to head from feed opening), rotating speed 1000rpm.
Embodiment 6
By weight the Vestolen PP 7052 of 30KG, the terpolymer EP rubber of 15KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend A6.
Preblend A6 and the RICON 153D of 2KG, the linking agent masterbatch MB-1 of 15KG of 83KG are mixed; Adopt twin screw to extrude to carry out dynamic vulcanization and prepare thermoplastic elastic material; The temperature of twin screw extruder heating zone is set at: 160 ℃, 170 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃, 180 ℃ (order is to head from feed opening), rotating speed 800rpm.
Comparative Examples 1
By weight the Vestolen PP 7052 of 23KG, the terpolymer EP rubber of 35KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend C1.
The Preblend C1 of 96KG and the RICON 153D of 2KG are mixed; Add from the main feed opening of twin screw extruder; Two two or five linking agents (liquid) of 2KG adopt liquid meters to claim to add from the 4th joint barrel of twin screw extruder, adopt twin screw to extrude to carry out dynamic vulcanization to prepare thermoplastic elastic material.Processing condition are with embodiment 3.
Comparative Examples 2
By weight the Vestolen PP 7052 of 22KG, the terpolymer EP rubber of 35KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend C2.
The Preblend C2 of 95KG and the RICON 153D of 2KG are mixed; Two two or five linking agents (liquid) of 3KG adopt liquid meters to claim to add from the 4th joint barrel of twin screw extruder, adopt twin screw to extrude to carry out dynamic vulcanization to prepare thermoplastic elastic material.Processing condition are with embodiment 4.
Comparative Examples 3
By weight the Vestolen PP 7052 of 17KG, the HIFAX CA7153S of 5KG, the terpolymer EP rubber of 35KG, the kaolin of 10KG, the white mineral oil of 27.8KG, the oxidation inhibitor (1010) of 0.2KG are mixed, adopt Banbury mixer under the condition of 180～200 ℃ of temperature, rotating speed 30rpm, to carry out melting mixing and prepare Preblend C3.
The Preblend C3 of 95KG and the RICON 153D of 2KG are mixed; Two two or five linking agents (liquid) of 3KG adopt liquid meters to claim to add from the 4th joint barrel of twin screw extruder, adopt twin screw to extrude to carry out dynamic vulcanization to prepare thermoplastic elastic material.Processing condition are with Comparative Examples 2.
| Project | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| MFI（g/10min） | 18 | 20 | 28 | 30 |
| Tensile strength (MPa) | 5.4 | 5.8 | 8.9 | 12.3 |
| Elongation at break (%) | 528 | 486 | 560 | 600 |
| Hardness (Shao A or D) | 70A | 72A | 80A | 87A |
| Compression permanentset (%) | 29 | 30 | 33 | 36 |
| Squeeze the sheet outward appearance | No pit | No pit | No pit | No pit |
| Project | Embodiment 6 | Comparative Examples 1 | Comparative Examples 2 | Comparative Examples 3 |
| MFI（g/10min） | 35 | 38 | 48 | 30 |
| Tensile strength (MPa) | 18 | 5.5 | 7.8 | 8.6 |
| Elongation at break (%) | 620 | 425 | 530 | 550 |
| Hardness (Shao A or D) | 40D | 72A | 80A | 80A |
| Compression permanentset (%) | 45 | 33 | 38 | 35 |
| Squeeze the sheet outward appearance | No pit | Pit is arranged | Pit is arranged | A little pit |
Can know that from table embodiment 1～6 adopts the TPV of linking agent masterbatch preparation, crowded sheet outward appearance does not have pit, the compression permanentset is less, tensile strength is higher.Comparative Examples 1 and 2 adopts directly adds two two or five linking agents, and squeezing the sheet outward appearance all has pit, and it is big that melting index becomes; The degraded that PP is described is serious, and tensile strength reduces, added HIFAX CA7153S in the Comparative Examples 3 after; Melting index reduces than Comparative Examples 2; Explain that its adding has suppressed the degraded of PP, pit still occurs, explain and adopt liquid meter to claim to add the pit problem that linking agent can't be eradicated product but squeeze the sheet outward appearance; Only under the situation that is prepared as the linking agent masterbatch, the pit problem just can effectively be solved.
In sum; Employing of the present invention is two two or the five linking agent masterbatch of preparing carriers with the ethylene-propylene-diene monomer plastic structure with forming similar porousness thermoplastic resin; In order to replace two two or five liquid of direct interpolation; Prepared TPV has advantages such as tensile strength is higher, the compression permanentset is lower, outward appearance does not have pit, melting index is more stable, can prepare the TPV product of high comprehensive performance, has a good application prospect in fields such as automobile, electronic apparatus, building, daily necessities.
Claims (10)
1. one kind is applied to the linking agent masterbatch that dynamic vulcanization prepares TPR, it is characterized in that, is mixed with at normal temperatures by liquid peroxide and porousness thermoplastic resin to obtain; Said liquid peroxide accounts for 10 ~ 30% of linking agent master batch weight; Said porousness thermoplastic resin is the multipolymer that contains ethene, propylene and butylene structural unit.
2. linking agent masterbatch as claimed in claim 1 is characterized in that, said liquid peroxide is 2,5-dimethyl--2,5-bis(t-butylperoxy) hexin or 2,5-dimethyl--2, any one or its mixture in the 5-bis(t-butylperoxy) hexane.
3. linking agent masterbatch as claimed in claim 1 is characterized in that, in the said porousness thermoplastic resin, contains the inside hole of 20 ~ 40 volume %.
4. linking agent masterbatch as claimed in claim 1 is characterized in that, said porousness thermoplastic resin foams through the multipolymer to ethene, propylene and butylene and prepares; Or the adding porous catalyst prepares when ethene, propylene and butylene copolymerization.
5. a TPR is characterized in that, is made up of the component of counting by weight percentage as follows:
Vestolen PP 7052 5～40%, terpolymer EP rubber 10～50%, filler 0～40%, linking agent masterbatch 2～15%, crosslinking coagent 0.5～10%, oxidation inhibitor 0.01～2% and processing aid 0.01～50%;
Said linking agent masterbatch is the said linking agent masterbatch of claim 1;
Said TPR adopts dynamic vulcanization technology to prepare.
6. like the said TPR of claim 5, it is characterized in that said Vestolen PP 7052 is a HOPP, said polyacrylic melt flow index is 0.2 ~ 5g/10min, and said polyacrylic DSC fusing point is greater than 160 ℃.
7. like the said TPR of claim 5, it is characterized in that the mooney viscosity of said terpolymer EP rubber (ML 1+4; 100 ℃) be 25 ~ 90; Unsaturated the 3rd monomer accounts for 0.5 ~ 10 weight % of terpolymer, and ethene accounts for 60 ~ 85 weight % of terpolymer, and surplus is a propylene.
8. like the said TPR of claim 5, it is characterized in that said crosslinking coagent is one or more the mixture in liquid polybutadiene, cyanate, isocyanates or the esters of acrylic acid material; Said inhibitor is one or more the mixture in phenolic antioxidant or the phosphite ester kind antioxidant; Said processing aid is one or more the mixture in Triple Pressed Stearic Acid, stearate, MOX, silicone oil or the silicone.
9. the preparation method of the said TPR of claim 5 is characterized in that, adopts melt-blending process to carry out, and raw materials mix is accomplished dynamic vulcanization in melting mixing equipment.
10. preparation method as claimed in claim 9 is characterized in that said melting mixing equipment is that single screw extrusion machine, twin screw are extruded, Banbury mixer or two rotors continuous mixing equipment; The processing condition of blend are 160～250 ℃ of temperature, rotating speed 30～1200rpm.
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| CN109666224A (en) * | 2018-12-24 | 2019-04-23 | 宁波汉吉高分子材料有限公司 | Sealing strip made of a kind of TPV of lasting self-lubricating and preparation method thereof the and TPV |
| CN109666224B (en) * | 2018-12-24 | 2022-01-11 | 宁波汉吉高分子材料有限公司 | Lasting self-lubricating TPV (thermoplastic vulcanizate), preparation method thereof and sealing strip prepared from TPV |
| CN113597446A (en) * | 2019-03-21 | 2021-11-02 | Sabic环球技术有限责任公司 | Additive composition |
| CN113597446B (en) * | 2019-03-21 | 2023-08-29 | Sabic环球技术有限责任公司 | additive composition |
| CN113710731A (en) * | 2019-04-17 | 2021-11-26 | 埃克森美孚化学专利公司 | Method for improving UV weatherability of thermoplastic vulcanizate |
| CN110105601A (en) * | 2019-05-08 | 2019-08-09 | 合肥原然新材料有限公司 | A kind of preparation method of peroxide master batch |
| CN112063059A (en) * | 2020-09-10 | 2020-12-11 | 上海荣南科技有限公司 | EPDM 90-degree compact rubber material and processing technology thereof |
| CN115044096A (en) * | 2021-03-08 | 2022-09-13 | 嘉瑞塑胶科技有限公司 | Antibacterial polymer composite |
| CN115044096B (en) * | 2021-03-08 | 2023-08-15 | 嘉瑞塑胶科技有限公司 | Antibacterial polymer composite material |
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