CN107200938A - A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene - Google Patents

A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene Download PDF

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CN107200938A
CN107200938A CN201610151000.0A CN201610151000A CN107200938A CN 107200938 A CN107200938 A CN 107200938A CN 201610151000 A CN201610151000 A CN 201610151000A CN 107200938 A CN107200938 A CN 107200938A
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parts
foaming
methylstyrene
foamed material
temperature
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张振秀
张昕
李楠
李一楠
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Qingdao University of Science and Technology
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Qingdao University of Science and Technology
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions 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
    • C08L23/18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08L23/20Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08L23/22Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/102Azo-compounds
    • C08J9/103Azodicarbonamide
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
    • C08J9/104Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof
    • C08J9/105Hydrazines; Hydrazides; Semicarbazides; Semicarbazones; Hydrazones; Derivatives thereof containing sulfur
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00Foams characterized by the expanding agent
    • C08J2203/04N2 releasing, ex azodicarbonamide or nitroso compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised 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
    • C08J2323/18Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
    • C08J2323/20Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
    • C08J2323/22Copolymers of isobutene; butyl rubber
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/14Applications used for foams
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

The invention discloses a kind of co-polymer foamed material of brominated isobutylene p-methylstyrene and preparation method thereof, its formula includes BIMSM100 parts, 0 100 parts of filler, 0 30 parts of plasticizer, 2 15 parts of foaming agent, 05 parts of activating agent, 05 parts of vulcanizing agent;05 parts of accelerator;05 parts of antioxidant, and preparation method is provided with above-mentioned formula.It the method can be widely used in the fields such as heat-barrier material, encapsulant, insulation material, buffering spacer, sound absorbing plate, medical material utensil, Aero-Space.

Description

A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene
Technical field
The invention belongs to polymeric material field, and in particular to a kind of brominated isobutylene-p-methylstyrene is co-polymer foamed Material and preparation method thereof.
Background technology
According to《Chinese high molecular foam material industry production need to be predicted looks forward to the prospect with Development-Pattern Transformation analysis report》Data display, During 2008 second half year to 2009 first half of the year, influenceed by global financial crisis, certain downslide occurs in domestic economy, Associated outlet trade is a greater impact, and flexible foamed materials industry development speed slows down.Market scale in 2008 is 54.83 Hundred million yuan, increase by 11.58% on a year-on-year basis, market scale is 61.19 hundred million yuan within 2009, and year-on-year growth rate is 11.60%, is compared The first two years, there is different degrees of decline.Since the second half year in 2009, global economy started recovery, domestic family The development of the relevant industries such as electricity, electronic product and Leisure Sport starts slowly to recover the development speed before financial crisis.In advance Meter is after 2010, and the flexible foamed materials industry of China will have lasting fast development, it is contemplated that annual growth will exceed 15%, it is up to 10,000,000,000 yuan to market scale in 2012.
Brominated isobutylene-p-methylstyrene copolymer has disordered structure, this be due to monomer reactivity ratio it is basic It is identical.After aggregated and subsequent bromination, some of p-methylstyrene groups are converted into active brominating methyl styrene Group.In the polymer of these main chain saturations containing isobutene, the p-methylstyrene of 1%-5% mol ratios and The brominated p-methylstyrene of 0.5%-1.3% mol ratios.Its glass transition temperature or second order transition temperature are with to methylbenzene The increase of ethylene contents and raise, typically about -57 DEG C.
It was found from from the structure of BIMSM elastomers, carbon-to-carbon double bond is free of in its main chain, C-C crosslinkings can be formed and be good for, And main chain is saturation, so its heat resistance and ozone resistance are greatly enhanced.This glue does not contain age resistor, oligomeric The material such as thing and epoxidized soybean oil, high purity.BIMSM air-tightness, heat endurance, ozone resistance, oxidation are steady It is qualitative to be better than halogenated butyl rubber.
The content of the invention
It is an object of the invention to provide a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene and its preparation side Method, the method can be widely used in heat-barrier material, encapsulant, insulation material, buffering spacer, sound absorbing plate, medical material The fields such as glassware tool, Aero-Space.
A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, its formula is as follows:BIMSM100 parts, fill out 0-100 parts of material, 0-30 parts of plasticizer, 0-15 parts of foaming agent, 0-5 parts of activating agent, 0-5 parts of vulcanizing agent;Accelerator 0-5 parts;0-5 parts of antioxidant.
Filler is the one or more in carbon black, white carbon, calcium carbonate, kaolin, talcum powder.
Plasticizer is the one or more in aromatic naphtha, paraffin oil, n-butene isobutylene copolymers (PB).
Foaming agent is any of azodicarbonamide (AC), 4,4'- oxybis-benzenesulfonyl hydrazides (OBSH).
Activating agent is the one or more in zinc oxide (ZnO) stearic acid (SA), zinc stearate (ZnSt).
Vulcanizing agent is that magnesia (MgO), Sulfur (S), alkylphenol formaldehyde resin (SP-1045), peroxidating two are different One or more in propyl benzene (DCP).
Vulcanization accelerator is benzothiazole disulfide (DM), tetramethylthiuram disulfide (TMTD), dimethyl two Thiocarbamates (ZDMC), tetra-sulfurized pair pentamethylene thiuram (DPTT), Triallyl isocyanurate (TAIC) In one or more.
Antioxidant is β-positive octadecanol ester (antioxidant 1076) of (3,5- di-tert-butyl-hydroxy phenyl) propionic acid, 2,6- One or more in di-tert-butyl-4-methy phenol (BHT).
A kind of preparation method of the co-polymer foamed material of brominated isobutylene-p-methylstyrene, its step is as follows:
1) mixed refining process
In BIMSM input banburies, banbury temperature is 80-120 DEG C, sequentially adds filler, plasticizer, age resistor And fire retardant etc., 5-10min is kneaded, vulcanizing agent, foaming agent is added, 3-5min is kneaded, roll spacing 2mm is finally adjusted, Bottom sheet discharges, and obtains elastomeric compound;
2) sulfur foam
1. free foaming technique:Elastomeric compound is put into Rubber Extruder, extruder extrusion predetermined shape sheet material, and passed through Guide wheel is transported in foaming furnace, and foaming furnace is that electric heating air blast is uniformly heated, and leading portion is crosslinked or microwave radiation equipped with infra-red radiation Crosslinking, the temperature that temperature imports foaming furnace from extruder to foaming furnace terminal temperature is respectively set as 130-180 DEG C, this plate Time of the material in foaming furnace is 15-30 minutes, is cooled down after foaming through water cooling tank, is cut, and Novel high-damping is made and inhales Sound expanded material.
2. moulded from foam technique, mould, pressure 10-20MPa, 160-180 DEG C of temperature, time are inserted by elastomeric compound Load weighted film, using mode hopping foaming, i.e., is encased in mould by 5-15min, the defined time, pressure and At a temperature of after saturation, open mould and obtain foaming plate, cool down at room temperature, Novel high-damping sound absorption expanded material is made.
The preparation method of another co-polymer foamed material of brominated isobutylene-p-methylstyrene, its step is as follows:
1) prepared by elastomeric compound
(1) parts by weights also known as takes required rubber, filler and plasticizer;(2) banbury temperature setting is 60-100 DEG C, Rotating speed is 40-60rpm, rubber, filler, plasticizer is put into banbury, mixing is uniform, control dump temperature is low In 120 DEG C;(3) 12h is parked in elastomeric compound dumping, tabletting, cooling;(4) sizing material after parking is added on a mill Vulcanizing system.
2) extrusion/compression molding
Elastomeric compound is put into extruder, extrusion board, tubing or required shape.
3) presulfurization
The drying tunnel that the batch mixing glue of shaping is put into 100-160 DEG C carries out presulfurization, and prevulcanisation time is 3min-40min, sulphur Change mode is hot-air cure, microwave radiation crosslinking or infra-red radiation crosslinking etc..
4) supercritical foaming
The good sample of presulfurization is put into autoclave, is passed through physical blowing agent and is warming up to 40-150 DEG C, is forced into After 5-60Mpa, saturation 0.5-72h, poromerics is made in pressure release.Wherein ultra physical foaming agent is CO2, N2, fourth One or more in alkane, pentane.
5) post-cure, sizing;
Presulfurization micro-foaming material is put into post-cure in another drying tunnel, sizing, wherein drying tunnel temperature is 100-180 DEG C, Cure time is 10-60min, and vulcanization is hot-air cure, microwave radiation crosslinking or infra-red radiation crosslinking etc..
Compared with prior art, the invention has the advantages that:
A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene is a kind of high performance elastomer material, is not only had There are hypotonicity and high damping property, the sound absorption soundproof effect of rubber excellent, and with certain intensity, hardness and heat surely Qualitative, weatherability, ozone resistance are excellent;And the expanded material of wherein supercritical foaming method preparation is more clean, can use In the product that medical material etc. requires higher.
Brief description of the drawings
In Fig. 1 preparation methods of the present invention, the scanning electron microscope (SEM) photograph of embodiment 1;
In Fig. 2 preparation methods of the present invention, the scanning electron microscope (SEM) photograph of embodiment 2;
In Fig. 3 preparation methods of the present invention, the scanning electron microscope (SEM) photograph of embodiment 3;
In Fig. 4 preparation methods of the present invention, the scanning electron microscope (SEM) photograph of embodiment 4.
Embodiment
The present invention is described further with reference to embodiment:
Embodiment 1
100 parts of BIMSM, 15 parts of filler, 0 part of plasticizer, 2 parts of foaming agent, 1 part of activating agent, 1 part of vulcanizing agent; 1 part of accelerator;1 part of antioxidant.
Filler is carbon black.
Plasticizer is aromatic naphtha.
Foaming agent is azodicarbonamide (AC).
Activating agent is zinc oxide (ZnO).
Vulcanizing agent is magnesia (MgO).
Vulcanization accelerator is benzothiazole disulfide (DM).
Antioxidant is β-positive octadecanol ester (antioxidant 1076) of (3,5- di-tert-butyl-hydroxy phenyls) propionic acid.
In BIMSM input banburies, banbury temperature is 80 DEG C, sequentially adds filler, plasticizer, age resistor etc., 5-10min is kneaded, vulcanizing agent, foaming agent is added, 3-5min is kneaded, roll spacing 2mm is finally adjusted, bottom sheet discharges, Obtain elastomeric compound.Elastomeric compound is inserted into mould, pressure 10MPa, 160 DEG C of temperature, time 15min is sent out using mode hopping Load weighted film, i.e., be encased in mould by bubble method, under defined time, pressure and temperature after saturation, opens mould Tool obtains foaming plate, and its scanning electron microscope (SEM) photograph is shown in Fig. 1.
Embodiment 2
A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, its formula is as follows:BIMSM100 parts, fill out 50 parts of material, 10 parts of plasticizer, 6 parts of foaming agent, 5 parts of activating agent, 2.5 parts of vulcanizing agent;4 parts of accelerator;Antioxygen 0.5 part of agent.
Filler is kaolin.
Plasticizer is paraffin oil.
Foaming agent is 4,4'- oxybis-benzenesulfonyl hydrazides (OBSH).
Activating agent is stearic acid (SA.
Vulcanizing agent is Sulfur (S).
Vulcanization accelerator is tetramethylthiuram disulfide (TMTD)
Antioxidant is 2,6- di-tert-butyl-4-methy phenols (BHT).
In BIMSM input banburies, banbury temperature is 100 DEG C, sequentially adds filler, plasticizer, age resistor etc., 5-10min is kneaded, vulcanizing agent, foaming agent is added, 3-5min is kneaded, roll spacing 2mm is finally adjusted, bottom sheet discharges, Obtain elastomeric compound.Elastomeric compound is inserted into mould, pressure 10MPa, 180 DEG C of temperature, time 6min is sent out using mode hopping Load weighted film, i.e., be encased in mould by bubble method, under defined time, pressure and temperature after saturation, opens mould Tool obtains foaming plate, and its scanning electron microscope (SEM) photograph is shown in Fig. 2.
Embodiment 3
A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, its formula is as follows:BIMSM100 parts, fill out 30 parts of material, 5 parts of plasticizer, 3 parts of activating agent, 2 parts of vulcanizing agent;3 parts of accelerator;2 parts of antioxidant.
Filler is white carbon.
Plasticizer is n-butene isobutylene copolymers (PB).
Activating agent is zinc stearate (ZnSt).
Vulcanizing agent is alkylphenol formaldehyde resin (SP-1045).
Vulcanization accelerator is tetra-sulfurized pair pentamethylene thiuram (DPTT).
Antioxidant is β-positive octadecanol ester (antioxidant 1076) of (3,5- di-tert-butyl-hydroxy phenyl) propionic acid, 2,6- The mixture of di-tert-butyl-4-methy phenol (BHT).
Banbury temperature setting is 120 DEG C, and rotating speed is 60rpm, and rubber, filler, plasticizer are put into banbury, Mixing is uniform, and 12h is parked in elastomeric compound dumping, tabletting, cooling;Sizing material after parking is added into vulcanizing system on a mill. Elastomeric compound is put into extruder, extrusion board.The drying tunnel that the elastomeric compound of shaping is put into 160 DEG C carries out presulfurization, pre- sulphur The change time is 15min.The good sample of presulfurization is put into autoclave, is passed through N2And be warming up to 40 DEG C, be forced into After 16Mpa, saturation 24h, pressure release;Then presulfurization micro-foaming material is put into post-cure in another drying tunnel, sizing, Wherein drying tunnel temperature is 180 DEG C, and cure time is 3min, and microcellular foam material is obtained after being taken out from drying tunnel, and it scans electricity Mirror figure is shown in Fig. 3.
Embodiment 4
A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, its formula is as follows:BIMSM100 parts, fill out 60 parts of material, 10 parts of plasticizer, 1 part of activating agent, 2 parts of vulcanizing agent;3 parts of accelerator;1 part of antioxidant.
Filler is kaolin.
Plasticizer is aromatic naphtha, paraffin oil, the mixture of n-butene isobutylene copolymers (PB).
Foaming agent is azodicarbonamide (AC).
Activating agent is zinc stearate (ZnSt).
Vulcanizing agent is cumyl peroxide (DCP).
Vulcanization accelerator is Triallyl isocyanurate (TAIC).
Antioxidant is 2,6- di-tert-butyl-4-methy phenols (BHT).
Banbury temperature setting is 100 DEG C, and rotating speed is 60rpm, and rubber, filler, plasticizer are put into banbury, 3min is kneaded, vulcanizing agent, accelerator is then added, 2min is kneaded, 12h is parked in dumping, tabletting, cooling.Will be mixed Refining is placed in mould, and compression molding presulfurization, wherein vulcanizing agent temperature are 140 DEG C, prevulcanisation time 10min.Pre- sulphur The sample changed is put into autoclave, is passed through CO2And be warming up to 130 DEG C, be forced into 20Mpa, after saturation 2h, Pressure release, takes out sample, and cooling obtains microcellular foam material, its scanning electron microscope (SEM) photograph is shown in Fig. 4.
The property indices of the expanded material obtained by above-described embodiment are detected according to a conventional method, it is real Apply a 1-4 testing result and be shown in Table 1
Detection project Embodiment 1 Embodiment 2 Embodiment 3 Embodiment 4
Shore C hardness 14 27 19 25
Density g/cm3 0.209 0.395 0.286 0.435
Resilience 63 68 67 66
Tensile strength/MPa 0.33 0.39 0.51 0.92
Finally it should be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although The present invention is described in detail previous embodiment, and one of ordinary skill in the art still can be to foregoing each implementation The technical scheme of example is modified, or carries out equivalent substitution to which part technical characteristic;And these modifications or replacement, The essence of appropriate technical solution is not set to depart from the scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, it is characterised in that its formula is as follows:BIMSM100 parts, 0-100 parts of filler, 0-30 parts of plasticizer, 0-15 parts of foaming agent, 0-5 parts of activating agent, 0-5 parts of vulcanizing agent;0-5 parts of accelerator;0-5 parts of antioxidant.
2. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, it is characterised in that filler is the one or more in carbon black, white carbon, calcium carbonate, kaolin, talcum powder.
3. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, it is characterised in that plasticizer is the one or more in aromatic naphtha, paraffin oil, n-butene isobutylene copolymers (PB).
4. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, it is characterized in that, foaming agent is any of azodicarbonamide (AC), 4,4'- oxybis-benzenesulfonyl hydrazides (OBSH), microballoon foaming agent.
5. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, characterized in that, activating agent is the one or more in zinc oxide (ZnO) stearic acid (SA), zinc stearate (ZnSt).
6. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, characterized in that, vulcanizing agent is the one or more in magnesia (MgO), Sulfur (S), alkylphenol formaldehyde resin (SP-1045), cumyl peroxide (DCP).
7. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, characterized in that, vulcanization accelerator is the one or more in benzothiazole disulfide (DM), tetramethylthiuram disulfide (TMTD), DMDS carbaminate (ZDMC), tetra-sulfurized pair pentamethylene thiuram (DPTT), Triallyl isocyanurate (TAIC).
8. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene according to claims 1, it is characterized in that, antioxidant is β-(3,5- di-tert-butyl-hydroxy phenyls) the positive octadecanol ester (antioxidant 1076) of propionic acid, the one or more in 2,6- di-tert-butyl-4-methy phenols (BHT).
9. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, it is characterised in that its preparation process is as follows:
1) mixed refining process
In BIMSM input banburies, banbury temperature is 80-120 DEG C, sequentially adds filler, plasticizer, and age resistor and fire retardant etc. knead 5-10min, add vulcanizing agent, foaming agent, knead 3-5min, finally adjusts roll spacing 2mm, and bottom sheet discharging obtains elastomeric compound;
2) sulfur foam
1. free foaming technique:Elastomeric compound is put into Rubber Extruder, extruder extrudes predetermined shape sheet material, and be transported to by guide wheel in foaming furnace, foaming furnace is that electric heating air blast is uniformly heated, and leading portion is crosslinked or microwave radiation crosslinking equipped with infra-red radiation, and the temperature that temperature imports foaming furnace from extruder to foaming furnace terminal temperature is respectively set as 130-180 DEG C, time of this sheet material in foaming furnace is 15-30 minutes, cool down, cut through water cooling tank after foaming, Novel high-damping sound absorption expanded material is made.
2. moulded from foam technique, elastomeric compound is inserted into mould, pressure 10-20MPa, 160-180 DEG C of temperature, time 5-15min, using mode hopping foaming, load weighted film is encased in mould, under defined time, pressure and temperature after saturation, mould is opened and obtains foaming plate, cool down at room temperature, Novel high-damping sound absorption expanded material is made.
10. a kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene, it is characterised in that its preparation process is as follows:
1) prepared by elastomeric compound
(1) parts by weights also known as takes required rubber, filler and plasticizer;(2) banbury temperature setting is 60-100 DEG C, and rotating speed is 40-60rpm, rubber, filler, plasticizer is put into banbury, mixing is uniform, and control dump temperature is less than 120 DEG C;(3) 12h is parked in elastomeric compound dumping, tabletting, cooling;(4) sizing material after parking is added into vulcanizing system on a mill.
2) extrusion/compression molding
Elastomeric compound is put into extruder, extrusion board, tubing or required shape.
3) presulfurization
The drying tunnel that the batch mixing glue of shaping is put into 100-160 DEG C carries out presulfurization, and prevulcanisation time is 2min-40min, and vulcanization is hot-air cure, microwave radiation crosslinking or infra-red radiation crosslinking.
4) physical blowing
The good sample of presulfurization is put into autoclave, is passed through physical blowing agent and is warming up to 40-150 DEG C, is forced into 5-60Mpa, after saturation 0.5-72h, pressure release, and poromerics is made.Wherein physical blowing agent is CO2, N2, butane, the one or more in pentane.
5) post-cure, sizing;
Micro-foaming material is put into post-cure in another drying tunnel, sizing, wherein drying tunnel temperature is 100-180 DEG C, cure time is 10-60min, vulcanization is hot-air cure, microwave radiation crosslinking or infra-red radiation crosslinking.
CN201610151000.0A 2016-03-16 2016-03-16 A kind of co-polymer foamed material of brominated isobutylene-p-methylstyrene Pending CN107200938A (en)

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Cited By (2)

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CN114230934A (en) * 2021-12-29 2022-03-25 中国化工集团曙光橡胶工业研究设计院有限公司 Aircraft tire inner liner rubber and preparation method thereof
US11702525B2 (en) 2018-12-04 2023-07-18 Exxonmobil Chemical Patents Inc. Cationomeric polyolefin compositions and methods for production and use thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11702525B2 (en) 2018-12-04 2023-07-18 Exxonmobil Chemical Patents Inc. Cationomeric polyolefin compositions and methods for production and use thereof
CN114230934A (en) * 2021-12-29 2022-03-25 中国化工集团曙光橡胶工业研究设计院有限公司 Aircraft tire inner liner rubber and preparation method thereof

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Application publication date: 20170926