CN106867118A - A kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials and preparation method thereof - Google Patents

A kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials and preparation method thereof Download PDF

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CN106867118A
CN106867118A CN201710115427.XA CN201710115427A CN106867118A CN 106867118 A CN106867118 A CN 106867118A CN 201710115427 A CN201710115427 A CN 201710115427A CN 106867118 A CN106867118 A CN 106867118A
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epdm
ldpe
parts
foaming
silicon rubber
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廖华勇
陈旭东
温彦威
陶国良
刘春林
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Changzhou University
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Changzhou University
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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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-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
    • C08J9/10—Working-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
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    • C08J9/103—Azodicarbonamide
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    • 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
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    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2203/00—Foams characterized by the expanding agent
    • C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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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
    • C08J2323/04—Homopolymers or copolymers of ethene
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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
    • C08J2323/16—Ethene-propene or ethene-propene-diene copolymers
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    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—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
    • C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
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    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/02—Flame or fire retardant/resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/14—Applications used for foams
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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    • C08L2207/066—LDPE (radical process)

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Abstract

This is the invention belongs to material blending and modifying field, and in particular to a kind of Silicone Rubber/EPDM (EPDM)/low density polyethylene (LDPE) (LDPE) tertiary blending expanded material and preparation method thereof.Blending foaming material is prepared by weighing, banburying, four steps of mill and foaming, wherein silicon rubber is merged well with EPDM and LDPE, and uniform foam cell, density is low and adjustable.Within the scope of the temperature for keeping flexible, good mechanical performance, elasticity is good, with the characteristic such as weather-proof, heatproof, ageing-resistant, adding fire retardant can be played an important role with fire-retardant in fields such as packaging, automobile, heat insulation, building, buffer pad and sqouynd absorption lowering noises.

Description

A kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials and preparation method thereof
Technical field
The invention belongs to material blending and modifying field, and in particular to a kind of Silicone Rubber/EPDM (EPDM)/low close Degree polyethylene (LDPE) tertiary blending expanded material and preparation method thereof.
Background technology
Silicon rubber is a kind of material of function admirable, and using very wide, but general high temperature vulcanizable silicone is linear Strand, melt strength is not high, and foam performance is poor, and chemical stability is not high, and mechanical strength is not also good.
Ethylene propylene diene rubber (EPDM) is by the rubber of ethene, propylene and a small amount of Third monomer copolymerization, molecule Chain keeps flexible within the scope of temperature wider, with excellent chemical stability, such as resistance to ag(e)ing, chemical proofing, resistance to Cryogenic property, hot water resistance energy, electrical insulating property be strong and impact elasticity is high etc..
Low density polyethylene (LDPE) (LDPE) strand is branched chain type, and melt strength is high, and foam performance is good, and mechanical property is (as drawn Stretch intensity etc.) also superior to silastic material.
Silicon rubber/LDPE blending foaming is prepared, belongs to binary blending foaming, EPDM foam performances are good, good with foam performance EPDM and LDPE come improve the silastic material of foam performance difference turn into it is a kind of may, the expanded material of three's blending can be taken into account The advantage of three, but compatibility between silicon rubber and EPDM is poor, it is impossible to reach expected blending foaming effect.
The content of the invention
The purpose of the present invention：Poor for current silicon rubber foam performance, chemical stability is not high, and mechanical strength is not good, The problems such as silicon rubber and EPDM poor compatibilities, the method by the way that foaming is blended, particularly titanate esters are coordinated nanoclay as Compatilizer is used, and prepares a kind of silicon rubber/EPDM/LDPE blending foaming materials.
Technical scheme：A kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials, counts by weight, its Formula includes：It it is 100 parts using silicon rubber/EPDM/LDPE three as base stock, three's gross weight number, silicon rubber is 10 ~50 parts, EPDM is 25~45 parts, and LDPE is 25~45 parts；Compatilizer, 1 part of titanate esters compatilizer, nano clay compatilizer 1 Part；Foaming agent, 3~10 parts of AC foaming agents；Other auxiliary agents, 0.5~2 part of cumyl peroxide (DCP) crosslinking agent, calcium carbonate or 0~15 part of mica powder inorganic filler, 1~6 part of zinc oxide, 0.5~1 part of stearic acid, 0~50 part of methyl-silicone oil, white carbon 0~30 Part, 1,010 0.1 part of antioxidant.
A kind of preparation method of silicon rubber/EPDM/LDPE tertiary blending expanded materials, specific steps include：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 115~125 DEG C, by three kinds of base-materials of LDPE and EPDM and raw-silastic continuously close 12~18min of banburying in mill；
(3) mill mill temperature is set to 115~125 DEG C, and other auxiliary agents are first added during mill, is eventually adding DCP crosslinking agents and AC foaming agents, beat triangle bag 5-7 times, until blend composition is well mixed, tablet are removed into pressing (institute in accompanying drawing 1 The slice of colding pressing stated)；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 170~190 DEG C, 0 Moulded from foam is carried out under the conditions of~10MPa, after foaming 10-15 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Preferably, the banbury temperature described in step (2) is 120 DEG C.
Preferably, banbury banburying 15min in step (2).
Preferably, the mill temperature described in step (3) is 120 DEG C.
Preferably, remove tablet in step (3) flattening while hot.
Beneficial effects of the present invention：Silastic material and other two kinds of materials (EPDM and LDPE) compatibility are bad, this hair Bright to select specific compatilizer (titanate esters and nano clay), wherein nano clay is good to silicon rubber and EPDM compatibilities, titanium Acid esters compatilizer also can be to playing compatible role, while titanate esters can also be used as coupling between silicon rubber, EPDM and LDPE Agent is used, and macromolecular material and nano clay is coupled so that adhesive property is more preferable between nano clay and macromolecule.Silicon rubber Glue/EPDM/LDPE can be blended foaming in the range of aforementioned proportion, reduce the foaming difficulty of silastic material, improve silicon rubber The foam performance of glue material, while titanate esters can also assign blending foaming material certain flexibility.Made blending foaming material Silicon rubber is merged well with EPDM and LDPE in material, and uniform foam cell, density is low and adjustable.Keeping flexible temperature In the range of degree, good mechanical performance, elasticity is good, with the characteristic such as weather-proof, heatproof, ageing-resistant, adds fire retardant to hinder Combustion, can play an important role in fields such as packaging, automobile, heat insulation, building, buffer pad and sqouynd absorption lowering noises.
Brief description of the drawings
Fig. 1 is frothing process flow diagram of the invention.
Fig. 2 is the electron microscope picture of foam prepared by embodiment 1.
Fig. 3 is the electron microscope picture of foam prepared by embodiment 2.
Fig. 4 is the electron microscope picture of foam prepared by embodiment 3.
Specific embodiment
On testing standard：Density presses GB/T 6342-1995 tests；Tearing strength presses GB/T 529-1999 tests；Draw Intensity and elongation at break is stretched to be tested by GB/T 528-1998.Number of the invention is weight portion, primary raw material and equipment point Not as shown in Table 1 and Table 2：
The primary raw material of table 1
Raw material Model/specification Manufacturer
Methyl-vinyl raw-silastic continuously 110-2 Xin Tai Chemical Co., Ltd.s of Laizhou City of Shandong Province
Ethylene propylene diene rubber (EPDM) 3720P LG-DOW company
Low density polyethylene (LDPE) (LDPE) 2102TN26 Qilu Petrochemical
Azodicarbonamide (AC) Dn≤8 Shanghai Wenhua chemical color Co., Ltd
Cumyl peroxide (DCP) Technical grade It is commercially available
Stearic acid Analysis is pure Chemical Reagent Co., Ltd., Sinopharm Group
Zinc oxide Analysis is pure Chemical Reagent Co., Ltd., Sinopharm Group
White carbon The precipitation method Shanghai Liang Jiang titanium white heavy chemicals Co., Ltd
Methyl-silicone oil 500CS Changzhou Ke Yuan Chemical Co., Ltd.s
Antioxidant 1010 Technical grade It is commercially available
The capital equipment of table 2
Embodiment 1
Foaming formulation：
10 parts of methyl-vinyl raw-silastic continuously, 45 parts of EPDM, 45 parts of LDPE, 1 part of cumyl peroxide (DCP), 4.5 parts of AC foaming agents, 2.1 parts of zinc oxide, 1 part of stearic acid, 8 parts of methyl-silicone oil, 2 parts of white carbon, antioxidant 1010 with 0.1 part, 1 part of titanate esters compatilizer, 1 part of nano clay compatilizer, 2 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and EPDM, LDPE and three kinds of base-materials of raw-silastic continuously are passed through into banbury Banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.1g.cm-3, tensile strength is 1.1MPa, and elongation at break is 240%.Electron-microscope scanning figure is as shown in Figure 2.
Embodiment 2
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 30 parts, 35 parts of EPDM, 35 parts of LDPE, cumyl peroxide (DCP) 1.5 parts, 5 parts of AC foaming agents, 2.5 parts of zinc oxide, 1 part of stearic acid, 26 parts of methyl-silicone oil, 6 parts of white carbon, antioxidant 1010 is used 0.1 part, 1 part of titanate esters compatilizer, 1 part of nano clay compatilizer, 2 parts of inorganic filler mica powder.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and EPDM, LDPE and three kinds of base-materials of raw-silastic continuously are passed through into banbury Banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.12g.cm-3, tensile strength is 0.5MPa, and elongation at break is 121%.Electron-microscope scanning figure is as shown in Figure 3.
Embodiment 3
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 50 parts, 25 parts of EPDM, 25 parts of LDPE, cumyl peroxide (DCP) 2 Part, 7 parts of AC foaming agents, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 uses 0.1 Part, 1 part of titanate esters compatilizer, 1 part of nano clay compatilizer, 3 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and EPDM, LDPE and three kinds of base-materials of raw-silastic continuously are passed through into banbury Banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.21g.cm-3, tensile strength is 0.25MPa, and elongation at break is 170.4%.Shown in electron-microscope scanning figure as accompanying drawing 4.
Embodiment 4
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 50 parts, 50 parts of EPDM, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 parts, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, nano clay 1 part of compatilizer, 3 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.19g.cm-3, tensile strength is 0.20MPa, and elongation at break is 190.1%.
Embodiment 5
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 60 parts, EPDM40 parts, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 Part, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, nano clay phase Hold 1 part of agent, 3 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.18g.cm-3, tensile strength is 0.21MPa, and elongation at break is 191.6%.
Embodiment 6
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 50 parts, 50 parts of EPDM, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 parts, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, titanate esters phase Hold 1 part of agent, 3 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.24g.cm-3, tensile strength is 0.14MPa, and elongation at break is 156.8%.
Embodiment 7
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 60 parts, EPDM40 parts, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 Part, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, and titanate esters are compatible 1 part of agent, 3 parts of inorganic filler calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.22g.cm-3, tensile strength is 0.16MPa, and elongation at break is 161.0%.
Comparative example 1
Without nano clay compatilizer, remaining formula, preparation technology are same as Example 4.
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 50 parts, 50 parts of EPDM, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 parts, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, inorganic filler 3 parts of calcium carbonate.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.26g.cm-3, tensile strength is 0.04MPa, and elongation at break is 90.6%.
Comparative example 2
Without nano clay compatilizer, remaining formula, preparation technology are same as Example 5.
Foaming formulation：
Methyl-vinyl raw-silastic continuously is 60 parts, EPDM40 parts, 2 parts of cumyl peroxide (DCP), AC foaming agents 7 Part, 3.5 parts of zinc oxide, 1 part of stearic acid, 45 parts of methyl-silicone oil, 10 parts of white carbon, antioxidant 1010 is with 0.1 part, inorganic filler carbon 3 parts of sour calcium.
Preparation technology：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 120 DEG C, and two kinds of base-materials of EPDM and raw-silastic continuously are passed through into banbury banburying 15min or so；
(3) mill mill temperature is set to 120 DEG C, and other auxiliary agents are first added during mill, DCP and AC foaming agents Finally just add, beat triangle bag 7 times, until blend composition is well mixed, tablet is removed and is flattened while hot；
(4) foaming the appropriately sized plastic sample of clip be placed in mould, be put into vulcanization tablet press machine in 180 DEG C, 10MPa Pressure condition under carry out moulded from foam, after foaming 10 minutes, mould is taken out in release, and expanded material is taken out after cooling.
Test result：
Blending foaming material apparent density is measured for 0.28g.cm-3, tensile strength is 0.03MPa, and elongation at break is 85.3%.

Claims (6)

1. a kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials, it is characterised in that described blending foaming material is by weight Amount number meter, its formula includes：Using silicon rubber/EPDM/LDPE three as base stock, three's gross weight number is 100 parts, Silicon rubber is 10~50 parts, and EPDM is 25~45 parts, and LDPE is 25~45 parts；1 part of titanate esters compatilizer, nano clay compatilizer 1 part, 3~10 parts of AC foaming agents, 0.5~2 part of cumyl peroxide crosslinking agent, calcium carbonate or mica powder inorganic filler 0~15 Part, 1~6 part of zinc oxide, 0.5~1 part of stearic acid, 0~50 part of methyl-silicone oil, 0~30 part of white carbon, 1,010 0.1 part of antioxidant.
2. a kind of preparation method of silicon rubber as claimed in claim 1/EPDM/LDPE tertiary blending expanded materials, its feature It is that specific steps include：
(1) weighing weighs raw material and each analog assistant by formula；
(2) banburying banbury temperature is set to 115~125 DEG C, by three kinds of base-materials of LDPE and EPDM and raw-silastic continuously in banbury Middle 12~18min of banburying；
(3) mill mill temperature is set to 115~125 DEG C, and other auxiliary agents are first added during mill, is eventually adding DCP friendships Connection agent and AC foaming agents, beat triangle bag 5-7 times, until blend composition is well mixed, tablet are removed into pressing；
(4) the foaming appropriately sized plastic sample of clip is placed in mould, is put into vulcanization tablet press machine at 170~190 DEG C, 0~ Moulded from foam under the conditions of 10MPa, is foamed 10-15 minutes, and mould is taken out in release, and expanded material is taken out after cooling.
3. the preparation method of silicon rubber as claimed in claim 2/EPDM/LDPE tertiary blending expanded materials, it is characterised in that Banbury temperature described in step (2) is 120 DEG C.
4. the preparation method of silicon rubber as claimed in claim 2/EPDM/LDPE tertiary blending expanded materials, it is characterised in that Banbury banburying 15min in step (2).
5. the preparation method of silicon rubber as claimed in claim 2/EPDM/LDPE tertiary blending expanded materials, it is characterised in that Mill temperature described in step (3) is 120 DEG C.
6. the preparation method of silicon rubber as claimed in claim 2/EPDM/LDPE tertiary blending expanded materials, it is characterised in that Tablet is removed in step (3) is flattened while hot.
CN201710115427.XA 2017-03-01 2017-03-01 A kind of silicon rubber/EPDM/LDPE tertiary blending expanded materials and preparation method thereof Pending CN106867118A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109762337A (en) * 2018-12-29 2019-05-17 易宝（福建）高分子材料股份公司 Closed pore molding high temperature second time of foaming material and preparation method thereof is blended with ethylene propylene diene rubber binary for one kind thermal contraction silicon rubber resistant to high temperatures
CN115386171A (en) * 2022-07-12 2022-11-25 东莞市利群榕兴高分子科技有限公司 Cold-shrink ethylene propylene diene monomer EPDM (ethylene propylene diene monomer) rubber pipe and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103602067A (en) * 2013-10-20 2014-02-26 安徽嘉木橡塑工业有限公司 Silicone rubber and terpolymer EP rubber blend and preparation method thereof
CN105175846A (en) * 2015-07-18 2015-12-23 常州大学 Silicone rubber/LDPE blend foam material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103602067A (en) * 2013-10-20 2014-02-26 安徽嘉木橡塑工业有限公司 Silicone rubber and terpolymer EP rubber blend and preparation method thereof
CN105175846A (en) * 2015-07-18 2015-12-23 常州大学 Silicone rubber/LDPE blend foam material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109762337A (en) * 2018-12-29 2019-05-17 易宝（福建）高分子材料股份公司 Closed pore molding high temperature second time of foaming material and preparation method thereof is blended with ethylene propylene diene rubber binary for one kind thermal contraction silicon rubber resistant to high temperatures
CN115386171A (en) * 2022-07-12 2022-11-25 东莞市利群榕兴高分子科技有限公司 Cold-shrink ethylene propylene diene monomer EPDM (ethylene propylene diene monomer) rubber pipe and preparation method thereof

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Application publication date: 20170620