CN104710692B - Solubilizer for improving performance of natural rubber-ethylene propylene rubber co-blended rubber and preparation method thereof - Google Patents

Solubilizer for improving performance of natural rubber-ethylene propylene rubber co-blended rubber and preparation method thereof Download PDF

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CN104710692B
CN104710692B CN201510066284.9A CN201510066284A CN104710692B CN 104710692 B CN104710692 B CN 104710692B CN 201510066284 A CN201510066284 A CN 201510066284A CN 104710692 B CN104710692 B CN 104710692B
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natural rubber
rubber
banbury
mixing
proportioning
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CN104710692A (en
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肖建斌
刘伟
冯芝娟
程超
王诗凝
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Qingdao University of Science and Technology
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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
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
    • C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7461—Combinations of dissimilar mixers
    • 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
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/04—Polymer mixtures characterised by other features containing interpenetrating networks
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

A solubilizer for improving performance of natural rubber-ethylene propylene rubber co-blended rubber. Natural rubber, a polyethylene octene elastomer (POE), ethylene propylene diene rubber, methacrylic acid, white carbon black, zinc oxide, zinc stearate and a peroxide crosslinking agent are subjected to a co-blending reaction in a rubber and plastic internal mixer, and zinc methacrylate generated through in-situ polymerization and pre-crosslinked natural rubber-ethylene propylene rubber molecular chain segments form an interpenetrating network, and thus an olefin elastomer containing the natural rubber-ethylene propylene rubber chain segments is obtained; the material can improve the compatibility of the natural rubber-ethylene propylene rubber co-blended rubber and improve the mechanical properties of the natural rubber-ethylene propylene rubber co-blended rubber. The solubilizer is added into the natural rubber-ethylene propylene rubber co-blended rubber, the tensile strength and tearing strength of the vulcanizate are increased by 10% or more.

Description

A kind of bulking agent improving natural rubber and EP rubbers Blend rubber performance and preparation thereof Method
Technical field
The present invention relates to a kind of macromolecular material, be mainly used in improving natural rubber and the EP rubbers Blend rubber compatibility and Improve the material of Blend rubber mechanical property.
Background technology
Natural rubber has the highest elasticity, at a relatively high hot strength and tearing strength, and cohesive is good, also has good Comprehensive process performance, be the best general purpose rubber of combination property.Because its molecular chain structure contains active higher double bond, Easily reacting with the ozone etc. in air, so its heat oxygen aging resistance, ozone resistance are the most poor, product is short for service life, These characteristics limit its application at some special occasions.
Tyre element, because being subdued and various aging actions, is susceptible to flexing fatigue and destroys and aging cracking, serious shadow Ring Appcarance guality of tyres and serviceability, tradition rubber such as NR used in tyre stock parts, and NR Yu BR, SBR are also With glue, because its molecular backbone all contains unsaturated double-bond, easily affected by outside environmental elements, so the fatigue aging of tire Protected working is abnormal important.Improve the problem that natural rubber is ageing-resistant, flexible resistance is always rubber works personnel research.
EPDM has the ozone heat-resisting, resistance to of excellence, ageing-resistant and electrical insulating property, and is easily blended with polyolefin plastics, due to At aspects such as its raw material, performance and prices, there is unrivaled advantage, significantly expanded the range of application of EP rubbers, made EP rubbers, at aspects such as electrical equipment industry, auto parts and components, the inner tube of a tyre, waterproof material, polyolefinic improvement and additives, all obtains Substantial amounts of application, becomes the indispensable and irreplaceable a kind of rubber of synthetic material, but EPDM processing characteristics is bad greatly Limit greatly its range of application.
Natural rubber and two kinds of rubber mix of EP rubbers can obtain having concurrently the elastomeric compound of two kinds of rubber performances, practicality It is greatly enhanced.Vulcanizate can physical and mechanical properties that comprehensively NR phase is excellent and excellent heat-resisting, the ozone of EPDM and chemical drugs Moral character energy.But owing to autohension and the mutual viscosity of EPDM are poor, and vulcanization accelerator has at the dissolubility that each rubber is alternate Having the biggest difference, blend compounds is extremely difficult to synchronic curing, thus processing technique, blend compounds performance are brought considerable influence.Right EPDM carries out graft modification can improve the sulfuration compatibilization of NR/EPDM blend rubber, and EPDM graft-modification method mainly has Maleic anhydride (MAH) is modified, acrylonitrile modified, acrylate modified.And EPDM is carried out blending and modifying (heat treatment) and also may be used Co-vulcanization with effectively raising NR/EPDM.The research worker such as Song Jingfang have studied the sulfur of two kinds of blend rubber from technique Change increase-volume.Result shows, optimal process conditions be second the third white carbon black rubber master batch after Overheating Treatment, at 150 DEG C with natural rubber altogether Mixed 4 minutes, on cold roller, then add other compounding ingredient such as zinc oxide, stearic acid.This process can make blend compounds take Obtain excellent combination property.It addition, EPDM uses short vulcanization system, NR uses late effect property vulcanizing system can save heat treatment Time, improve curingprocess rate.The research worker such as make the country prosperous together discloses NR/EPDM blend compounds and reaches the key of co-vulcanization: select to close Suitable vulcanization accelerator, balances the sulfurate activity between each glue kind, coordinates the rate of cure of blend compounds.
Summary of the invention
The present invention relates to a kind of bulking agent improving natural rubber and EP rubbers Blend rubber performance and preparation method thereof.Its Middle employing natural rubber, polyethylene octene elastomer (POE), ethylene propylene diene rubber, methacrylic acid, white carbon, zinc oxide, hard Fat acid zinc, peroxide cross-linking agent be blending reaction in rubber and plastic banbury, and in-situ polymerization generates zinc methacrylate and precrosslink Natural rubber and EP rubbers molecule segment form interpenetrating networks, thus obtain a kind of containing natural rubber and EP rubbers chain The olefin type elastomer of section, this material part replacement EP rubbers is joined natural rubber and EP rubbers sizing material in, Natural rubber and the compatibility of EP rubbers can be obviously improved and improve the mechanical property of natural rubber and EP rubbers Blend rubber. Adding this kind of bulking agent in natural rubber with EP rubbers Blend rubber, the hot strength of vulcanizate and tearing strength improve 10% Above.
Concrete technical scheme is as follows: a kind of bulking agent improving natural rubber and EP rubbers Blend rubber performance, comprises Following components (wt.% represents): natural rubber: 10-25%, EP rubbers: 20-30%, ethylene octene elastomer: 30-50%, Methacrylic acid: 3-10%, white carbon: 3-10%, zinc oxide: 3-10%, zinc stearate: 0.5-2%, initiator 1,1-bis-uncle Butyl peroxy-3,3,5-trimethyl-cyclohexanes: 0.5-1%.
The preparation method of the present invention comprises the following steps:
(1) first natural rubber is plasticated in banbury, be subsequently adding zinc stearate, methacrylic acid and white carbon mixed Refining, by standby for the natural rubber master batch bottom sheet of mix homogeneously；
(2) in banbury, add POE and EP rubbers, be subsequently adding zinc oxide and 1,1-di-t-butyl peroxy-3, 3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the natural rubber master batch that step (1) is processed, reacts at banbury situ 5-10 minute；
(3) above-mentioned Blend rubber mill bottom sheet or in an extruder extruding pelletization i.e. obtain the material of the present application Material.
The present invention solves its technical problem and is used more specifically technical scheme to comprise the steps:
A) first zinc stearate, methacrylic acid and white carbon in homogenizer according to proportioning mix homogeneously；Use Said method first becomes zinc stearate, methacrylic acid and white carbon mix homogeneously into powdery and is easy to processing and dispersion；
B) first natural smoked sheet rubber plastic steelmaking, temperature 130 DEG C-140 DEG C in banbury, plasticate 4 minutes, then according to join Carry out mixing, by standby for mixing uniform natural rubber master batch bottom sheet than the mixture adding zinc stearate, methacrylic acid and white carbon With；
C) in banbury, add POE and EP rubbers, between temperature 70 C-80 DEG C, after mixing 1 minute, add oxidation Zinc and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the above-mentioned natural mother processed Glue, due to zinc oxide and methacrylic acid reaction in-situ acutely and also heat release, so being dividedly in some parts；
D) 5-10 minute discharge of mixing time in banbury, rotating speed 70r/min, temperature 130 DEG C-140 DEG C；
E) mill bottom sheet is used, between 70 DEG C-80 DEG C；Employing extruder is extruded, fluxing zone 100 DEG C, outlet section 130 ℃。
Detailed description of the invention
Embodiment 1:
1) first zinc stearate, methacrylic acid and white carbon in blender according to proportioning mix homogeneously, proportioning is 1: 5:5；
2) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, then according to proportioning adds The mixture entering zinc stearate, methacrylic acid and white carbon carries out mixing, and proportioning is that 2:1 is by under mixing uniform natural rubber master batch Sheet is standby；
3) in banbury, add POE and EP rubbers, between temperature 70 C-80 DEG C, after mixing 1 minute, add oxidation Zinc and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the above-mentioned natural mother processed Glue, proportioning is: 45:22.5:7:1:24.5；
4) 5 minutes discharges of mixing time in banbury, dump temperature 140 DEG C；
5) mill bottom sheet is used, between roller temperature 70 DEG C-80 DEG C.
Embodiment 2:
1) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, then according to proportioning adds Entering zinc stearate, methacrylic acid and white carbon and carry out mixing, proportioning is 20:1:5:5, by mixing uniform natural rubber master batch bottom sheet Standby；
2) in banbury, add POE and EP rubbers, between temperature 70 C-80 DEG C, after mixing 1 minute, add oxidation Zinc and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the above-mentioned natural mother processed Glue, proportioning is: 45:22:6:1:26；
3) 10 minutes discharges of mixing time in banbury, dump temperature 130 DEG C；Employing mill bottom sheet, roller temperature 70 DEG C- Between 80 DEG C；
4) extruder extruding pelletization, fluxing zone 100 DEG C, outlet section 130 DEG C are used.
Embodiment 3:
1) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, be subsequently adding POE and EP rubbers, mixes according to the mixture of proportioning addition zinc stearate, methacrylic acid and white carbon after mixing 1 minute Refining, proportioning is 15:45:22:1:5:5, and rear mixing bottom sheet cooling is standby；
2) in banbury, add above-mentioned elastomeric compound, between temperature 70 C-80 DEG C, add zinc oxide and 1,1-di-t-butyl Peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly, and proportioning is: 93:6:1；
3) 10 minutes discharges of mixing time in banbury, dump temperature 130 DEG C；Employing mill bottom sheet, roller temperature 70 DEG C- Between 80 DEG C；
4) extruder extruding pelletization, fluxing zone 100 DEG C, outlet section 130 DEG C are used.
Embodiment 4:
1) first zinc stearate, methacrylic acid and white carbon in blender according to proportioning mix homogeneously, proportioning is 1: 5:5；
2) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, then according to proportioning adds The mixture entering zinc stearate, methacrylic acid and white carbon carries out mixing, and proportioning is that 2:1 is by under mixing uniform natural rubber master batch Sheet is standby；
3) in banbury, add POE and EP rubbers, between temperature 70 C-80 DEG C, after mixing 1 minute, add oxidation Zinc and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the above-mentioned natural mother processed Glue, proportioning is: 45:22:6:1:26；
4) 5 minutes discharges of mixing time in banbury, dump temperature 140 DEG C；
5) mill bottom sheet is used, between roller temperature 70 DEG C-80 DEG C.
Embodiment 5:
Other steps are with embodiment 1 and 4.
Wherein in step 3, banbury adds POE and EP rubbers, between temperature 70 C-80 DEG C, mixing 1 minute with Rear addition zinc oxide and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts above-mentioned processing Good natural rubber master batch, proportioning is: 45:20:9:1:25.
Embodiment 6:
Other steps are with embodiment 1 and 4.
Wherein in step 3, banbury adds POE and EP rubbers, between temperature 70 C-80 DEG C, mixing 1 minute with Rear addition zinc oxide and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts above-mentioned processing Good natural rubber master batch, proportioning is: 45:25:8:1:21.
Material of the present invention has a following technical parameter:
Table 1
Table 1 (Continued)
Material of the present invention has a following technical parameter:
In tire sidewall glue reference formulation, use 20 parts of bulking agents (embodiment 1 preparation) 20 parts of EPDM of replacement, performance It is shown in Table 2.Reference formulation is as follows: NR (1# smoked sheet): 60, EPDM:40, zinc oxide: 5, stearic acid: 1.5, anti-aging agent RD: 1, anti-old Agent MB:1, captax: 1, accelerant B Z:0.4, white carbon black (330): 50, S:2.
The impact on NR/EPDM Blend rubber performance of table 2 bulking agent
As can be seen from the table, after adding bulking agent, hot strength and the tearing strength of vulcanizate are improved, Performance after hot oxygen and ozone aging is superior to be not added with the sizing material of bulking agent.

Claims (7)

1. the bulking agent improving natural rubber and EP rubbers Blend rubber performance, it is characterised in that comprise and represent with wt.% Following components: natural rubber: 10-25%, EP rubbers: 20-30%, ethylene octene elastomer: 30-50%, methacrylic acid: 3-10%, white carbon: 3-10%, zinc oxide: 3-10%, zinc stearate: 0.5-2%, initiator 1,1-di-t-butyl peroxy-3,3, 5-trimethyl-cyclohexane: 0.5-1%.
Bulking agent the most according to claim 1, it is characterised in that: use natural rubber, EP rubbers, ethylene octene elastomer three Unit is blended, and dynamic vulcanization precrosslink natural rubber and EP rubbers form heterogeneous stabilising system；Use methacrylic acid and oxidation Zinc generates zinc methacrylate in the reaction of ethylene octene elastomer substrates situ；Employing 1,1-di-t-butyl peroxy-3,3, 5-trimethyl-cyclohexane causes zinc methacrylate polymerization, forms polymethylacrylic acid zinc and ethylene octene elastomer, natural rubber Glue, the compatibilization system of EP rubbers interpenetrating networks.
3. the preparation method of bulking agent described in claim 1, comprises the following steps:
(1) first natural rubber is plasticated in banbury, be subsequently adding zinc stearate, methacrylic acid and white carbon mixing, will The natural rubber master batch bottom sheet of mix homogeneously is standby；
(2) in banbury, add ethylene octene elastomer and EP rubbers, be subsequently adding zinc oxide and 1,1-di-t-butyl mistake Epoxide-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts the natural rubber master batch that (1) is processed, at banbury situ React 5-10 minute；
(3) above-mentioned Blend rubber at mill bottom sheet or extruding pelletization in an extruder.
4. a preparation method for bulking agent as claimed in claim 1, comprises the following steps: a) first zinc stearate, methyl-prop Olefin(e) acid and white carbon in homogenizer according to proportioning mix homogeneously；Use said method first zinc stearate, metering system Acid and white carbon mix homogeneously become powdery and are easy to processing and dispersion；
B) first natural smoked sheet rubber plastic steelmaking, temperature 130 DEG C-140 DEG C in banbury, plasticate 4 minutes, then according to proportioning adds The mixture entering zinc stearate, methacrylic acid and white carbon carries out mixing, by standby for mixing uniform natural rubber master batch bottom sheet；
C) in banbury, ethylene octene elastomer and EP rubbers are added, between temperature 70 C-80 DEG C, after mixing 1 minute Adding zinc oxide and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts above-mentioned processing Natural rubber master batch, due to zinc oxide and methacrylic acid reaction in-situ acutely and also heat release, so being dividedly in some parts；
D) 5-10 minute discharge of mixing time in banbury, rotating speed 70r/min, temperature 130 DEG C-140 DEG C；
E) mill bottom sheet is used, between 70 DEG C-80 DEG C；Employing extruder is extruded, fluxing zone 100 DEG C, outlet section 130 DEG C.
5. a preparation method for bulking agent, comprises the following steps:
1) first zinc stearate, methacrylic acid and white carbon in blender according to proportioning mix homogeneously, proportioning is 1:5:5；
2) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, then according to proportioning adds hard The mixture of fat acid zinc, methacrylic acid and white carbon carries out mixing, and proportioning is that 2:1 is by standby for mixing uniform natural rubber master batch bottom sheet With；
3) in banbury, ethylene octene elastomer and EP rubbers are added, between temperature 70 C-80 DEG C, after mixing 1 minute Adding zinc oxide and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts above-mentioned processing Natural rubber master batch, proportioning is: 45:22.5:7:1:24.5；
4) 5 minutes discharges of mixing time in banbury, dump temperature 140 DEG C；
5) mill bottom sheet is used, between roller temperature 70 DEG C-80 DEG C.
6. a preparation method for bulking agent, comprises the following steps:
1) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, then according to proportioning adds hard Fat acid zinc, methacrylic acid and white carbon carry out mixing, and proportioning is 20:1:5:5, by standby for mixing uniform natural rubber master batch bottom sheet With；
2) in banbury, ethylene octene elastomer and EP rubbers are added, between temperature 70 C-80 DEG C, after mixing 1 minute Adding zinc oxide and 1,1-di-t-butyl peroxy-3,3,5-trimethyl-cyclohexanes are blended uniformly；It is dividedly in some parts above-mentioned processing Natural rubber master batch, proportioning is: 45:22:6:1:26；
3) 10 minutes discharges of mixing time in banbury, dump temperature 130 DEG C；Use mill bottom sheet, roller temperature 70 DEG C-80 DEG C Between；
4) extruder extruding pelletization, fluxing zone 100 DEG C, outlet section 130 DEG C are used.
7. a preparation method for bulking agent, comprises the following steps:
1) first natural rubber is plasticated in banbury, temperature 130 DEG C-140 DEG C, plasticate 4 minutes, be subsequently adding ethylene octene bullet Gonosome and EP rubbers, enter according to the mixture of proportioning addition zinc stearate, methacrylic acid and white carbon after mixing 1 minute Row is mixing, and proportioning is 15:45:22:1:5:5, and rear mixing bottom sheet cooling is standby；
2) in banbury, add above-mentioned elastomeric compound, between temperature 70 C-80 DEG C, add zinc oxide and 1,1-di-t-butyl peroxide Base-3,3,5-trimethyl-cyclohexanes are blended uniformly, and proportioning is: 93:6:1；
3) 10 minutes discharges of mixing time in banbury, dump temperature 130 DEG C；Use mill bottom sheet, roller temperature 70 DEG C-80 DEG C Between；
Use extruder extruding pelletization, fluxing zone 100 DEG C, outlet section 130 DEG C.
CN201510066284.9A 2015-02-09 2015-02-09 Solubilizer for improving performance of natural rubber-ethylene propylene rubber co-blended rubber and preparation method thereof Expired - Fee Related CN104710692B (en)

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CN107987326B (en) * 2017-12-18 2020-10-02 南漳富元鼎航空器材配件有限公司 Composite rubber of ethylene propylene diene monomer and natural rubber and preparation method thereof
CN111978604B (en) * 2020-08-26 2022-10-14 江苏徐工工程机械研究院有限公司 Anti-cracking rubber and crawler belt
CN115286847B (en) * 2022-08-29 2023-07-14 岭南师范学院 Zinc methacrylate/natural rubber composite material and preparation method thereof

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