CN106700287A - Foamed thermoplastic elastomer and preparation method thereof - Google Patents

Foamed thermoplastic elastomer and preparation method thereof Download PDF

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Publication number
CN106700287A
CN106700287A CN201611174890.3A CN201611174890A CN106700287A CN 106700287 A CN106700287 A CN 106700287A CN 201611174890 A CN201611174890 A CN 201611174890A CN 106700287 A CN106700287 A CN 106700287A
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parts
agent
foamed thermoplastic
thermoplastic elastomers
nano
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CN106700287B (en
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李文斌
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NINGBO TAIYONG AUTO PARTS CO Ltd
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NINGBO TAIYONG AUTO PARTS CO Ltd
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    • 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
    • C08L23/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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    • C08J2203/22—Expandable microspheres, e.g. Expancel®
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
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Abstract

The invention relates to a foamed thermoplastic elastomer and a preparation method thereof, and belongs to the technical field of thermoplastic elastomer engineering. The foamed thermoplastic elastomer comprises the following components in parts by weight: 10-90 parts of ethylene-propylene-diene-terpolymer rubber, 10-85 parts of olefin copolymer plastic, 5-30 parts of high melt strength olefin, 5-65 parts of a rubber softening agent, 1-30 parts of a capsule foaming agent, 1-5 parts of a vulcanizing agent, 0.5-5 parts of an assistant vulcanizing agent and 1-5 parts of nanoparticles. According to the foamed thermoplastic elastomer and the preparation method thereof provided by the invention, through reasonable matching of the components of the raw materials, and by using a matching preparation method, a foamed product can be directly prepared, a production process of the foamed thermoplastic elastomer can be simplified, and the foaming ratio and the foam uniformity of the foamed thermoplastic elastomer can be improved.

Description

A kind of foamed thermoplastic elastomers and preparation method thereof
Technical field
The present invention relates to a kind of foamed thermoplastic elastomers and preparation method thereof, belong to the engineering technology of thermoplastic elastomer (TPE) Field.
Background technology
In recent years, in order to tackle automobile inside trim and exterior trim, shaking on household appliances or office equipment etc. A kind of dynamic and noise problem, material-expanded moldings with flexible touch are widely used in multiple fields.Thermoplastic elastomehc Elastomer material easily shaping and foaming, thus favored by people.
At present it is known that the method for preparing foamed thermoplastic elastomers is first to prepare thermoplastic elastomer (TPE), then by thermoplasticity Elastomer mixes with foaming agent, and foamed products are prepared by the molding mode such as heating extrusion or heating injection, in this way, Thermoplastic elastomer (TPE) must be well mixed with foaming agent before continuous extrusion, complex procedures, used device is more.And it is existing There is the foaming agent that expanded material is selected based on heat decomposition type, such as sodium acid carbonate, azodiisobutyronitrile, expansion rate are fast, send out The difficult control of bubble amount, the lack of homogeneity of foaming, easy froth breaking or perforate, obtained foaming product rough surface.
Therefore a kind of novel thermoplastic elastomer composition comprising foaming agent of exploitation is needed, in extrusion molding or injection moulding During, it is not necessary to thermoplastic elastomer (TPE) is mixed with foaming agent in advance, foamed products can be directly obtained, reduce preparation hair The production process of product is steeped, and by reasonably combined between foamed thermoplastic elastomers component, obtains uniform foam cell, surface light The good foamed products of wiping sense.
The content of the invention
For the problem that prior art is present, the present invention provides a kind of foamed thermoplastic elastomers and preparation method thereof, can Simplify the production technology of foamed thermoplastic elastomers, improve the expansion ratio and cell uniformity of foamed thermoplastic elastomers.
The purpose of the present invention can be realized by following technical proposal：A kind of foamed thermoplastic elastomers, the elastomer Component including following parts by weight：
Ethylene propylene diene rubber：10-90 parts
Olefin copolymer plastics：10-85 parts
High fondant-strength alkene：5-30 parts
RX：5-65 parts
Microcapsules class foaming agent：1-30 parts
Vulcanizing agent：1-5 parts
Auxiliary curing agent：0.5-5 parts
Nano-particle：1-5 parts.
The foam performance of thermoplastic elastomer (TPE) depends primarily on its composition, and the melt strength of heterogeneity composition is shadow Ring the expandable Important Property Parameters of thermoplastic elastomer (TPE).When the melt strength of elastomer is too small, the abscess of formation is due to bubble Pore wall strength is small, and abscess collapses extruding so that material surface is coarse；When the melt strength of elastomer is excessive, cell nucleation process In can not overcome the resistance of cell wall so that the abscess for being formed is less.The said components that the present invention is used, by between component It is reasonably combined so that the melt strength size of composition is suitable, convenient foaming.The present invention use microcapsules class foaming agent, its by The softgel shell composition of the lower boiling capsule heart and thermoplastic resin, when being heated, capsule heart liquid gasifies produce interior pressure rapidly, while softgel shell By thermal softening, in the presence of interior pressure, softgel shell expansion makes volume increase foaming, and low with blowing temperature, foamed time is short, hair The advantages of steeping pollution-free.Microcapsules class foaming agent combines other components, directly can be foamed by twin-screw extrusion, assigns elasticity The preferable expansion ratio of body.
Preferably, the ethylene propylene diene rubber (EPDM) is (1.0-1.5) with the portion rate of olefin copolymer plastics：1. When olefin copolymer quantity of plastics is smaller, the dispersion particle of EPDM is larger, and arrangement is tight, olefin copolymer plastics it is strong Degree can not be showed fully, therefore whole co-mixing system intensity is smaller, hardness is relatively low.With the increasing of olefin copolymer plastics Many, rubber phase particles diminish, and particle alignment is loose, and now the intensity of olefin copolymer plastics is fully showed, intensity increase, And high resiliency is lost therewith.Consider, selection ethylene propylene diene rubber is (1.0- with the portion rate of olefin copolymer plastics 1.5)：1, now olefin copolymer plastics continuous phase and the EPDM dispersed phase effects of being implicative of each other reaches optimum degree so that foaming The combination property of thermoplastic elastomer (TPE) is best.
Preferably, ethylene molar content >=50% in described ethylene propylene diene rubber, Mooney viscosity ML1+4, 100 DEG C ( At 100 DEG C of constant temperature, preheat 1 minute, rotate the numerical value for determining for 4 minutes) it is 20-250.Experiment shows, in ethylene propylene diene rubber with The increase of ethylene contents, the vulcanization crosslinking degree of rubber is higher, and the network structure of formation is tightr, mixed system has enough Big tension force supports swelling for bubble.And Mooney viscosity value is relevant with system mobility related, Mooney viscosity value is too high, shows Molecular weight rubber is big, and mobile performance is relatively low, influences the processing characteristics of rubber, and Mooney viscosity is too low, and mobile performance is excessively good, mixture The melt strength of system is not enough to support the rapid growth of abscess-size, and abscess is easily broken.The EPDM that the present invention is used Rubber ethylene content and Mooney viscosity are in OK range.
Preferably, described ethylene propylene diene rubber is glycidyl methacrylate graft ethylene propylene diene rubber (EPDM-g-GMA).Using GMA as grafted monomers, active epoxy group is introduced on the strand of EPDM, improve EPDM matrixes Compatibility between each component so that more vulcanizing agents add the vulcanization of EPDM-g-GMA, improves system crosslink density, so that Improve the melt strength of composition.
Preferably, homopolymers or copolymer of the olefin copolymer plastics for alpha-olefin, including Alathon, third Polyamino alkenyl thing, ethylene-octene copolymer, ethylene-propylene copolymer etc..
Preferably, described high fondant-strength alkene is Z-average molecular weight is more than 1.0 × 106, molecular weight distribution Mz/Mw Noblen or propylene-alpha-olefin copolymers more than 3.0.Appropriate high fondant-strength alkene is added in elastomer system, The melt strength of system can be significantly improved, improves system foam performance.As Z-average molecular weight increases and molecular weight distribution increasing Width, high fondant-strength alkene mobility is deteriorated, and melt strength increases.
Further preferably, the microcapsules class foaming agent is with aliphatic hydrocarbon as core, with acrylonitrile, inclined chloroethene Alkene, the copolymer of GMA are the foaming agent of shell.Acrylonitrile has certain crystallinity, and propylene is used alone Nitrile can improve the intensity of microcapsules and compactness as microcapsule Ingredient, but plasticity shows slightly inadequate, and vinylidene chloride plus Enter, the crystallization of acrylonitrile is destroyed to a certain extent, the thermoplasticity of copolymer can be increased, make microcapsules steady in foaming The enhancing of qualitative and expansion ratio.And GMA is added as One function monomer so that the crosslink density of copolymer increases, further Improve the initial blowing temperature and foamed stability of microcapsules.Meanwhile, the microcapsules containing GMA Class foaming agent is good with EPDM-g-GMA surface compatabilities, foaming agent is uniformly dispersed, and expansion ratio and stability increase.
Another preferred, described acrylonitrile, vinylidene chloride, GMA monomer weight ratio of walking is (5- 10)：(1-2)：1.Acrylonitrile, vinylidene chloride, the quality of GMA monomer only have within the specific limits, Synergistic enhancing effect can be played.
Preferably, the RX is paraffin class petroleum distillate, aromatic hydrocarbons petroleum distillate, naphthenic oil evaporating Point, one or more in white oil.Appropriate RX is penetrated between rubber molecule, between increase rubber macromolecule away from From, weaken the active force between macromolecular, viscosity is reduced, macromolecular chain is easily slided, macroscopically increased the softness of rubber Property and mobility.And RX excessive number can be greatly lowered system viscosity, cause system melt strength to weaken, offset Optimization function of the RX to degree of scatter.
Preferably, described vulcanizing agent be organic peroxide sulfuration agent, one or more of Phenolic resin curative. Organic peroxide sulfuration agent be peroxide, the peroxide be the perbenzoic acid tert-butyl group, benzoyl peroxide, 2, 4- dichlorobenzoperoxides, cumyl peroxide, di-t-butyl peroxide, double (tert-butyl peroxy base) diisopropylbenzene (DIPB)s and peroxide Change one or more in dibenzoyl.Should be the alkylphenol that contraposition or meta replace as the phenolic resin of vulcanizer Condensation polymer with formaldehyde in alkaline medium, including alkylphenol formaldehyde resin and bromomethylation alkylphenol formaldehyde resin etc.. Phenolic resin curative is sent out by the methylol or halogenated methyl and rubber macromolecule double bond of phenolic resin or with α reactive hydrogen atoms Raw vulcanization reaction.
Preferably, described auxiliary curing agent is sulfur chloride, stannous chloride, trimethylolpropane, talan, polybutadiene Alkene, trimethylol-propane trimethacrylate, N, it is N- metaphenylenes dimaleimide, triallyl cyanurate, multifunctional Group's vinyl, tetramethylthiuram disulfide, one or more in dibenzothiazyl disulfide.Auxiliary curing agent may participate in vulcanization The cross-linking reaction of agent improves crosslink density, it is possible to provide functional group or free radical, improves cross-linking efficiency, and auxiliary curing agent can also enter Cross-linked network produces Beneficial Effect to the physical characteristic of vulcanizate, carries out compounding use when using as needed.
Preferably, described nano-particle is nano imvite, nano silicon, nano-calcium carbonate, nano-silica Change one or more in titanium.Nano-particle has very high-aspect ratio and very big specific surface area, therefore with extraordinary Enhancing effect.Nano-particle can influence the rheological characteristic of melt system, system melt strength is improved, and restrain collapsing for bubble Fall into and merge, therefore significantly improve the foaming effect of system.Secondly the nanoparticle surface of addition is also used as nucleating point, carries Nucleation rate high and cell density, reduce abscess-size, make distribution of cells evenly.
Premised on not influenceing the purpose of the present invention, various known additives can be added, such as lubricant, releasing agent, resistance to Wait agent, antioxidant, antistatic additive, pigment, anti-blocking agent etc..
Another object of the present invention can be realized by following technical proposal：A kind of preparation of foamed thermoplastic elastomers Method, described preparation method comprises the following steps：Weigh ethylene propylene diene rubber, olefin copolymer plastics, high fondant-strength alkene Hydrocarbon, nano-particle, add in double screw extruder, after being evenly distributed, are separately added into partial rubber softening agent, auxiliary curing agent and portion Divide RX, vulcanizing agent, foaming agent and partial rubber softening agent prepare foamed thermoplastic elastomeric after sulfur foam Body.
Raw material of the invention is added in batches, first ethylene propylene diene rubber, olefin copolymer plastics, high fondant-strength Alkene, nano-particle add double screw extruder through main feed mouthful, after being well mixed through a period of time, add partial rubber to soften Agent, material absorbs softening agent, and the flexibility and mobility of material are improved, and are easy to subsequent extrusion to process, subsequent auxiliary curing agent By charge door add double screw extruder in, absorb RX be dispersed in material, be eventually adding vulcanizing agent and Foaming agent, carries out sulfur foam.
Preferably, described RX, auxiliary curing agent, vulcanizing agent and foaming agent add the suitable of double screw extruder Sequence is：3-4 heating zones add the RX of 35-50% parts by weight, and 6-7 heating zones add 20-35% parts by weight RX and auxiliary curing agent, 8-10 heating zones add 20-35% parts by weight RX, vulcanizing agent and foaming agent.
3-4 heating zones add the RX of 35-50% parts by weight, start to melt in this several sections of heating zone rubber, Viscosity is higher, and softening agent reduces overall viscosity after adding, energy consumption when reducing processing.6-7 heating zones add 20-35% parts by weight RX and auxiliary curing agent, being refueled at one due to batch can cause extruder to skid, so part softening agent is placed on This several sections of heating zones, while largely softening dilution agent auxiliary curing agent, lift the dispersion effect of auxiliary curing agent.8-10 heating zones add 20-35% parts by weight RX, vulcanizing agent and foaming agent, the rubber softening dilution agent vulcanizing agent for now adding, lifting Auxiliary curing agent dispersion effect, starting initiation rubber carries out vulcanization reaction, and foamable reaction is carried out while vulcanization crosslinking reacts.Rubber Gum softening agent is added in double screw extruder in batches, in rubber mix melting course of conveying, can constantly absorb rubber soft Agent, optimizes the flexibility and mobility of rubber, is easy to processing, and auxiliary curing agent and vulcanizing agent are respectively together with RX Add, auxiliary curing agent and vulcanizing agent is dispersed in rubber, promote vulcanization reaction to carry out, increase crosslink density, change Kind foaming new capability.
The present invention provides a kind of novel thermoplastic elastomer composition comprising foaming agent, in extrusion molding or the mistake of injection moulding Cheng Zhong, directly obtains foamed products, it is not necessary in advance mix thermoplastic elastomer (TPE) with foaming agent, reduces and prepares foamed products Production process, at least 3 times of the expansion ratio of product is obtained with this composition, not due to the rough surface that froth breaking causes, touch Sense is good, and distribution of cells is uniform.
Specific embodiment
The following is specific embodiment of the invention, technical scheme is further described, but the present invention is simultaneously It is not limited to these embodiments.
Embodiment 1
Foamed thermoplastic elastomers each component and weight fraction：
Ethylene propylene diene rubber：50 parts
Alathon：50 parts
High fondant-strength alkene：10 parts
Paraffin oil：10 parts
Microcapsules class foaming agent：5 parts
Nano imvite：1 part
The perbenzoic acid tert-butyl group：1 part
Trimethylolpropane：0.5 part.
Preparation method：
The selection a diameter of 70mm of twin-screw, draw ratio is 60, is divided into 12 heating zones, the temperature of each heating zone, component Feed location is as shown in table 1 below,
The twin-screw Heating Zone Temperature of table 1 and component feed location
Ethylene propylene diene rubber, Alathon, high fondant-strength alkene, nano imvite are weighed, is added in 1 heating zone double In screw extruder, after being evenly distributed, the paraffin oil of 50% parts by weight is added in 3 heating zones, 6 heating zones add trihydroxy methyl The paraffin oil of propane and 25% parts by weight, 9 heating zones add paraffin oil, the perbenzoic acid tert-butyl group of 25% parts by weight With microcapsules class foaming agent, foamed thermoplastic elastomers are prepared after sulfur foam.
Embodiment 2
Foamed thermoplastic elastomers each component and weight fraction：
EPDM-g-GMA：30 parts
Homopolymerization PP：20 parts
High fondant-strength alkene：8 parts
Microcapsules class foaming agent：5 parts
White oil：10 parts
Nano silicon：3 parts
Alkylphenol formaldehyde resin：1 part
Tetramethylthiuram disulfide：0.5 part
Antioxidant 1010：0.01 part
Antioxidant 1068：0.02 part.
Preparation method：
The selection a diameter of 80mm of twin-screw, draw ratio is 65, is divided into 12 heating zones, the temperature of each heating zone, component Feed location is as shown in table 2 below,
The twin-screw Heating Zone Temperature of table 2 and component feed location
Weigh EPDM-g-GMA, homopolymerization PP, high fondant-strength alkene, nano silicon, antioxidant 1010, anti-oxidant Agent 1068, in 1 heating zone adds double screw extruder, after being evenly distributed, the white of 40% parts by weight is added in 4 heating zones Oil, 6 heating zones add the white oil of tetramethylthiuram disulfide and 30% parts by weight, and 8 heating zones add alkyl phenol formaldehyde Resin, the white oil of 30% parts by weight and microcapsules class foaming agent, prepare foamed thermoplastic elastomers after sulfur foam.
Embodiment 3
Foamed thermoplastic elastomers each component and weight fraction：
EPDM-g-GMA：60 parts
Ethylene-octene copolymer：55 parts
Naphthenic oil：30 parts
High fondant-strength alkene：15 parts
Microcapsules class foaming agent：10 parts
Nano-calcium carbonate：3 parts
Benzoyl peroxide：2 parts
Dibenzothiazyl disulfide：2 parts.
Preparation method：
The selection a diameter of 90mm of twin-screw, draw ratio is 55, is divided into 11 heating zones, the temperature of each heating zone, component Feed location is as shown in table 3 below,
The twin-screw Heating Zone Temperature of table 3 and component feed location
EPDM-g-GMA, ethylene-octene copolymer, high fondant-strength alkene, nano-calcium carbonate are weighed, is added in 1 heating zone Enter in double screw extruder, after being evenly distributed, the naphthenic oil of 35% parts by weight is added in 4 heating zones, 6 heating zones add two sulphur Change the naphthenic oil of bisbenzothiazole and 35% parts by weight, 8 heating zones add benzoyl peroxide, microcapsules class foaming agent and The naphthenic oil of 30% parts by weight, prepares foamed thermoplastic elastomers after sulfur foam.
Embodiment 4
Foamed thermoplastic elastomers each component and weight fraction：
EPDM-g-GMA：80 parts
Ethylene-propylene copolymer：75 parts
Aromatic naphtha：50 parts
High fondant-strength alkene：25 parts
Microcapsules class foaming agent：20 parts
Nano titanium oxide：3 parts
Cumyl peroxide：5 parts
Stannous chloride：5 parts.
Preparation method：
The selection a diameter of 100mm of twin-screw, draw ratio is 62, is divided into 13 heating zones, the temperature of each heating zone, component Feed location is as shown in table 4 below,
The twin-screw Heating Zone Temperature of table 4 and component feed location
EPDM-g-GMA, ethylene-propylene copolymer, high fondant-strength alkene, nano titanium oxide are weighed, in 1 heating zone Add in double screw extruder, after being evenly distributed, the aromatic naphtha of 50% parts by weight is added in 4 heating zones, 7 heating zones add chlorine Change the aromatic naphtha of stannous and 25% parts by weight, 9 heating zones add cumyl peroxide, microcapsules class foaming agent and 25% weight The aromatic naphtha of number is measured, foamed thermoplastic elastomers are prepared after sulfur foam.
Comparative example 1
Comparative example 1 and embodiment 2 are differed only in foamed thermoplastic elastomers not comprising high fondant-strength alkene group Point, remaining is same as Example 2, is not repeated herein.
Comparative example 2
Comparative example 1 and embodiment 2 differ only in foamed thermoplastic elastomers in foaming agent be sodium acid carbonate foaming agent, Remaining is same as Example 2, is not repeated herein.
Foamed thermoplastic elastomers in embodiment 1-4 and comparative example 1-2 are carried out into performance test, test result such as table 5 It is shown.
The foamed thermoplastic elastomers the performance test results of the embodiment of the present invention 1-4 of table 5 and comparative example 1-2
As can be seen from Table 5, embodiment 1-4 foamed thermoplastic elastomers have excellent mechanical property, expansion ratio Higher, expandability is good；And lacking high fondant-strength olefin component in comparative example 1, sodium acid carbonate foaming agent replaces micro- in comparative example 2 Capsule class foaming agent, its foamed thermoplastic elastomers poor mechanical property, expandability is poor.
The present invention, with reference to preparation method, assigns foamed thermoplastic elastomers excellent by composition and combinations thereof number Property, expansion ratio is good.
Specific embodiment described in the present invention is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
It is skilled to this area although having made a detailed description and being cited some specific embodiments to the present invention For technical staff, as long as it is obvious that can be made various changes without departing from the spirit and scope of the present invention or corrected.

Claims (10)

1. a kind of foamed thermoplastic elastomers, it is characterised in that the elastomer includes the component of following parts by weight：
Ethylene propylene diene rubber：10-90 parts
Olefin copolymer plastics：10-85 parts
High fondant-strength alkene：5-30 parts
RX：5-65 parts
Microcapsules class foaming agent：1-30 parts
Vulcanizing agent：1-5 parts
Auxiliary curing agent：0.5-5 parts
Nano-particle：1-5 parts.
2. foamed thermoplastic elastomers according to claim 1, it is characterised in that the ethylene propylene diene rubber is total to alkene The portion rate of homopolymer plastics is (1.0-1.5)：1.
3. foamed thermoplastic elastomers according to claim 1, it is characterised in that ethene in described ethylene propylene diene rubber Molar content >=50%, Mooney viscosity ML1+4, 100 DEG C is 20-250.
4. foamed thermoplastic elastomers according to claim 1-3 any claims, it is characterised in that described ternary EP rubbers is glycidyl methacrylate graft ethylene propylene diene rubber.
5. foamed thermoplastic elastomers according to claim 1, it is characterised in that described high fondant-strength alkene is Z Average molecular weight is more than 1.0 × 106, Noblens or propylene-alpha-olefin copolymers of the molecular weight distribution Mz/Mw more than 3.0.
6. foamed thermoplastic elastomers according to claim 1, it is characterised in that described microcapsules class foaming agent be with Aliphatic hydrocarbon is core, with acrylonitrile, vinylidene chloride, GMA foaming of the copolymer as shell Agent.
7. foamed thermoplastic elastomers according to claim 6, it is characterised in that described acrylonitrile, vinylidene chloride, first Base glycidyl acrylate monomer weight ratio is (5-10)：(1-2)：1.
8. foamed thermoplastic elastomers according to claim 1, it is characterised in that it is de- that described nano-particle is that nanometer is covered One or more in soil, nano silicon, nano-calcium carbonate, nano titanium oxide.
9. a kind of preparation method of foamed thermoplastic elastomers as claimed in claim 1, it is characterised in that described preparation side Method comprises the following steps：Ethylene propylene diene rubber, olefin copolymer plastics, high fondant-strength alkene, nano-particle are weighed, is added double In screw extruder, after being evenly distributed, partial rubber softening agent, auxiliary curing agent and partial rubber softening agent are sequentially added, vulcanized Agent, foaming agent and partial rubber softening agent, prepare foamed thermoplastic elastomers after sulfur foam.
10. a kind of preparation method of foamed thermoplastic elastomers according to claim 9, it is characterised in that described rubber Gum softening agent, auxiliary curing agent, vulcanizing agent and foaming agent add the order of double screw extruder to be：3-4 heating zones add 35-50% The RX of parts by weight, 6-7 heating zones add the RX and auxiliary curing agent of 20-35% parts by weight, 8-10 Heating zone adds RX, vulcanizing agent and the foaming agent of 20-35% parts by weight.
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CN109306127A (en) * 2017-07-26 2019-02-05 中国石油化工股份有限公司 It is used to form composition and the rubber plastic blend foamed material and preparation method thereof of rubber plastic blend foamed material
CN109306127B (en) * 2017-07-26 2021-02-23 中国石油化工股份有限公司 Composition for forming rubber-plastic blended foaming material, rubber-plastic blended foaming material and preparation method thereof
CN111615535A (en) * 2017-12-06 2020-09-01 埃克森美孚化学专利公司 Low density foamed thermoplastic vulcanizate composition
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CN109796655B (en) * 2018-12-24 2021-11-30 浙江万里新材料科技有限公司 Irradiation crosslinking polyethylene foam material and preparation method thereof
CN111592721A (en) * 2020-05-25 2020-08-28 南京金陵塑胶化工有限公司 Propylene-based elastomer composition and preparation method thereof
CN112071483A (en) * 2020-08-26 2020-12-11 远东电缆有限公司 Compressive cable for smart energy and preparation method thereof
CN113999438A (en) * 2021-09-22 2022-02-01 浙江吉利控股集团有限公司 Damping rubber for chassis and preparation method thereof

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