CN110066446A - Fireproof foaming polythene material and preparation method thereof - Google Patents

Fireproof foaming polythene material and preparation method thereof Download PDF

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Publication number
CN110066446A
CN110066446A CN201910382587.XA CN201910382587A CN110066446A CN 110066446 A CN110066446 A CN 110066446A CN 201910382587 A CN201910382587 A CN 201910382587A CN 110066446 A CN110066446 A CN 110066446A
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foaming
temperature
polythene material
fireproof
parts
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胡洪山
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Guangzhou Oak Insulation Material Co Ltd
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Guangzhou Oak Insulation Material Co Ltd
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Priority to CN201910382587.XA priority Critical patent/CN110066446A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0019—Use of organic additives halogenated
    • 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
    • C08J9/0014—Use of organic additives
    • C08J9/0023—Use of organic additives containing oxygen
    • 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
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • C08J9/0066—Use of inorganic compounding ingredients
    • 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
    • C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
    • 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
    • C08J9/102—Azo-compounds
    • C08J9/103—Azodicarbonamide
    • 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
    • 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
    • C08J2323/06—Polyethene
    • 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
    • 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
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02—Organic and inorganic ingredients
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K3/2279—Oxides; Hydroxides of metals of antimony
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/02—Halogenated hydrocarbons
    • C08K5/03—Halogenated hydrocarbons aromatic, e.g. C6H5-CH2-Cl
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C—CHEMISTRY; METALLURGY
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/14—Peroxides

Abstract

The present invention relates to polyethylene foamed fields to provide a kind of fireproof foaming polythene material, the component including following mass fraction: 30-45 parts of high pressure polyethylene aiming at the problem that being easy to influence its shock-absorbing shock resistance after fire retardant is added in polyethylene foamed material；10-15 parts of ethylene-vinyl acetate copolymer；5-10 parts of antimony oxide；15-25 parts of decabromodiphenylethane；30-45 parts of aluminium hydroxide；10-18 parts of azodicarbonamide；0.2-0.8 parts of crosslink agent DCP；0.4-1 parts of zinc oxide；0.1-0.5 parts of stearic acid.A kind of preparation method of fireproof foaming polythene material, comprising the following steps: S1, mixing；S2, mill；S3, one step foaming；S4, second time of foaming.Be conducive to fireproof foaming polythene material while mixing the anti-flammability for being added as fire retardant into polyethylene foamed and being conducive to improve fireproof foaming polythene material to form fireproof foaming polythene material in certain proportion by using antimony oxide, decabromodiphenylethane and aluminium hydroxide and keep good shock-absorbing shock resistance.

Description

Fireproof foaming polythene material and preparation method thereof
Technical field
The present invention relates to polyethylene foamed field, more specifically, it relates to a kind of fireproof foaming polythene material and its Preparation method.
Background technique
Polyethylene foamed is a kind of novel environment friendly packaging material with high-strength buffering shock-absorbing shock resistance.Polyethylene foamed Flexible, light, high resilience has the series of characteristics such as heat preservation, moisture-proof, antifriction, corrosion-resistant, is widely used to electricity at present The packaging of the products such as son, electric appliance, precision instrument and high-grade family property.
In order to improve the flame retardant property of polyethylene foamed, it will usually fire retardant be added in polyethylene foamed, still, sending out It steeps after fire retardant is added in polyethylene, it will usually the foam cell uniformity of polyethylene foamed be had an impact, so that foaming is poly- The elasticity of ethylene is easy to be affected, and then therefore the shock-absorbing shock resistance for being easy to influence polyethylene foamed still has improved sky Between.
Summary of the invention
In view of the deficienciess of the prior art, the first object of the present invention is to provide a kind of fireproof foaming polyethylene material Material has the advantages that have good elasticity while polyethylene foamed material has good anti-flammability.
To achieve the above object, the present invention provides the following technical scheme that
A kind of fireproof foaming polythene material, the component including following mass fraction:
30-45 parts of high pressure polyethylene；
10-15 parts of ethylene-vinyl acetate copolymer；
5-10 parts of antimony oxide；
15-25 parts of decabromodiphenylethane；
30-45 parts of aluminium hydroxide；
10-18 parts of azodicarbonamide；
0.2-0.8 parts of crosslink agent DCP；
0.4-1 parts of zinc oxide；
0.1-0.5 parts of stearic acid.
By adopting the above technical scheme, by using antimony oxide, decabromodiphenylethane and aluminium hydroxide with certain Ratio mixing is added into polyethylene foamed as fire retardant to form fireproof foaming polythene material, is conducive to enhancing fire prevention hair The flame retardant effect of polythene material is steeped, meanwhile, by cooperating a certain proportion of azodicarbonamide foaming agent and crosslinking agent DCP, and using zinc oxide as cross-linking aid, so that the foaming and crosslinking of fireproof foaming polythene material are not readily susceptible to shadow It rings, to be conducive to improve the foam cell uniformity of fireproof foaming polythene material, so that the elasticity of fireproof foaming polythene material It is not readily susceptible to influence, and then is conducive to be conducive to fireproof foaming while improving the anti-flammability of fireproof foaming polythene material poly- Vinyl material keeps good shock-absorbing shock resistance；In addition, by using antimony oxide, decabromodiphenylethane and hydroxide Aluminium mixes in certain proportion to be added as fire retardant into polyethylene foamed, and the combustion of fireproof foaming polythene material is advantageously reduced Smoke density when burning advantageously reduces pernicious gas so that fireproof foaming polythene material is not allowed to be also easy to produce toxic smoke in burning The generation of dioxin.
The present invention is further arranged to: further include the component of following mass fraction:
8-15 parts of polyolefin elastomer.
By adopting the above technical scheme, by the way that polyolefin elastomer is added, be conducive to enhance fireproof foaming polythene material Tensile strength, so that the shock-absorbing shock resistance of fireproof foaming polythene material is not readily susceptible to influence.
In view of the deficienciess of the prior art, the second object of the present invention is to provide a kind of fireproof foaming polythene material Preparation method, with having good elasticity while preparing resulting polyethylene foamed material with good anti-flammability Advantage.
To achieve the above object, the present invention provides the following technical scheme that
A kind of preparation method of fireproof foaming polythene material, comprising the following steps:
S1, mixing: each component of fireproof foaming polythene material is mixed, and heats mixing, and control smelting temperature is 110 It DEG C -125 DEG C, stirs evenly, forms mixture；
S2, mill: by mixture stirring, compacting, then extrusion molding, blank is formed；
S3, one step foaming: blank is added in mold and carries out moulded from foam, obtains plate；
S4, second time of foaming: taking out plate and add and carry out second time of foaming in mold, and cooling 25min-40min, taking-up is dried in the air It is cool, obtain fireproof foaming polythene material.
By adopting the above technical scheme, by mix fireproof foaming polythene material each component, and control smelting temperature with Mixture is formed, each group mixing for being conducive to fireproof foaming polythene material is uniformly dispersed, to be conducive to azodicarbonamide Foaming agent and crosslink agent DCP are dispersed in mixture, and then are conducive to the full cross-linked of fireproof foaming polythene material And sufficiently foaming, so that the foam cell uniformity of fireproof foaming polythene material improves, so that fireproof foaming polyethylene material The elasticity of material is not readily susceptible to influence；By stirring, being compacted mixture, then extrusion molding, be conducive to improve the closely knit of mixture Degree, to be conducive to improve the foam cell uniformity of fireproof foaming polythene material, makes so that being not easy that there are abscesses in mixture The shock-absorbing shock resistance for obtaining fireproof foaming polythene material is not readily susceptible to influence；By being carried out to fireproof foaming polythene material It foams twice, the foam cell uniformity for being conducive to fireproof foaming polythene material improves, so that fireproof foaming polythene material Elasticity be not readily susceptible to influence so that fireproof foaming polythene material have good flame retardant property while make it Shock-absorbing shock resistance is not readily susceptible to influence.
The present invention is further arranged to: in the step S1, first be added high pressure polyethylene, ethylene-vinyl acetate copolymer, Antimony oxide, decabromodiphenylethane, aluminium hydroxide, crosslink agent DCP, zinc oxide, stearic acid, and temperature is gradually risen, work as temperature When degree is up to 110 DEG C -120 DEG C, azodicarbonamide is added, when temperature is up to 125 DEG C -130 DEG C, carries out draw operation.
By adopting the above technical scheme, it is added when temperature is up to 110 DEG C -120 DEG C to mixture by azodicarbonamide In, since ethylene-vinyl acetate copolymer has been in complete molten condition at 110 DEG C -120 DEG C, be conducive to enhance mixture Viscosity so that azodicarbonamide be added after be easier be blended with mixture uniformly so that azodicarbonamide more holds It is easily dispersed in mixture, and then is conducive to the abundant foaming of fireproof foaming polythene material, so that the poly- second of fireproof foaming The foam cell uniformity of alkene material improves, so that the elasticity of fireproof foaming polythene material is not readily susceptible to influence；Meanwhile it is logical It crosses azodicarbonamide to add when temperature is up to 110 DEG C -120 DEG C into mixture, so that azodicarbonamide is not easy to mention Preceding decomposition, to be conducive to the abundant foaming of fireproof foaming polythene material, so that the bubble of fireproof foaming polythene material The hole uniformity improves, so that the elasticity of fireproof foaming polythene material and shock-absorbing shock resistance are not readily susceptible to influence；Pass through Draw operation is carried out when temperature is up to 125 DEG C -130 DEG C, is conducive to mixture and is in semi-molten state, to be conducive to mixture Each component mixing dispersion it is more uniform, and then be conducive to foaming agent and be dispersed in mixture, so that the poly- second of fireproof foaming The foaming of alkene material is more full and uniform, and then is conducive to improve the foam cell uniformity of fireproof foaming polythene material, so that anti- The elasticity and shock-absorbing shock resistance of fiery polyethylene foamed material are not readily susceptible to influence.
The present invention is further arranged to: in the step S1, during temperature is gradually increasing, and every 3 DEG C of the rising-of temperature 5 DEG C, stirring overturning mixed once material.
By adopting the above technical scheme, rise 3 DEG C -5 DEG C by the way that during temperature is gradually increasing, temperature is every, stirring is turned over Turn mixed once material, each component mixing dispersion for being conducive to mixture is more uniform, is dispersed in be conducive to foaming agent In mixture, so that the foaming of fireproof foaming polythene material is more full and uniform, and then be conducive to improve the poly- second of fireproof foaming The foam cell uniformity of alkene material, so that the elasticity of fireproof foaming polythene material and shock-absorbing shock resistance are not readily susceptible to shadow It rings.
The present invention is further arranged to: the step S1 is carried out in closed environment.
By adopting the above technical scheme, it is carried out in closed environment by step S1, so that extraneous dust and work The sweat of personnel is not easy to be mixed into mixture in internal mixing pass, so that the inside of fireproof foaming polythene material is not allowed Easily there is non-uniform abscess not of uniform size, be conducive to the foam cell uniformity for improving fireproof foaming polythene material, so that anti- The elasticity and shock-absorbing shock resistance of fiery polyethylene foamed material are not readily susceptible to influence.
The present invention is further arranged to: in the step S1, by pushing pressurization lid to form closed reaction environment, when When stirring overturning mixture, lift pressurization lid, and pressurization lid periphery is cleaned before lifting pressurization lid.
By adopting the above technical scheme, by cleaning pressurization lid periphery before lifting pressurization lid every time, be conducive to protect The cleaning of feed inlet is held, so that extraneous dust is easy to be mixed into mixture in internal mixing pass, so that fireproof foaming is poly- The inside of vinyl material is not easy non-uniform abscess occur, is conducive to the uniform foam cell for improving fireproof foaming polythene material Degree, so that the elasticity of fireproof foaming polythene material and shock-absorbing shock resistance are not readily susceptible to influence.
The present invention is further arranged to: in the step S2, being added mixture into double screw extruder, and control respectively The temperature of screw rod is 95 DEG C -105 DEG C, and the temperature for controlling barrel is 105 DEG C -110 DEG C, and the temperature for controlling hopper is 115 DEG C -120 DEG C, the temperature for controlling die orifice is 90-100 DEG C.
By adopting the above technical scheme, by, by mixture extrusion molding, being conducive to improve mixing using double screw extruder The compactness of material, so that being not easy that there are abscesses in fireproof foaming polythene material, to be conducive to improve the poly- second of fireproof foaming The foam cell uniformity of alkene material, so that the elasticity of fireproof foaming polythene material and shock-absorbing shock resistance are not readily susceptible to shadow It rings；By controlling the screw rod of double screw extruder, the temperature of barrel, hopper and die orifice, be conducive to fireproof foaming polyethylene The crosslinking mechanisms of material and foaming process are controlled, thus be conducive to fireproof foaming polythene material it is abundant foam and It is full cross-linked, so that the foam cell uniformity of fireproof foaming polythene material improves, so that the elasticity of fireproof foaming polythene material It is not readily susceptible to influence.
The present invention is further arranged to: in the step S3, the temperature control of one step foaming is 145 DEG C -160 DEG C, once The time control of foaming is 30min-40min.
By adopting the above technical scheme, by controlling the temperature and time of one step foaming, be conducive to fireproof foaming polyethylene material The abundant foaming of material, so that the abscess of fireproof foaming polythene material is more uniform, so that fireproof foaming polythene material Elasticity and shock-absorbing shock resistance be not readily susceptible to influence.
The present invention is further arranged to: in the step S4, the temperature control of second time of foaming is 160 DEG C -170 DEG C, secondary The time control of foaming is 10-20min.
By adopting the above technical scheme, by controlling the temperature and time of second time of foaming, be conducive to fireproof foaming polyethylene material The foaming of material is more uniform, to be conducive to improve the foam cell uniformity of fireproof foaming polythene material, so that fireproof foaming is poly- The elasticity of vinyl material is not readily susceptible to influence.
In conclusion the invention has the following advantages:
1. being mixed in certain proportion by using antimony oxide, decabromodiphenylethane and aluminium hydroxide as fire-retardant The resistance for being conducive to enhance fireproof foaming polythene material to form fireproof foaming polythene material is added into polyethylene foamed in agent Fuel efficiency fruit, meanwhile, make by cooperating a certain proportion of azodicarbonamide foaming agent and crosslink agent DCP, and using zinc oxide For cross-linking aid, be conducive to the foam cell uniformity for improving fireproof foaming polythene material, so that fireproof foaming polythene material Elasticity is not readily susceptible to influence, and then is conducive to be conducive to fire prevention hair while improving the anti-flammability of fireproof foaming polythene material It steeps polythene material and keeps good elasticity；
2. being mixed in certain proportion by using antimony oxide, decabromodiphenylethane and aluminium hydroxide as fire-retardant Agent is added into polyethylene foamed, the smoke density when burning of fireproof foaming polythene material is advantageously reduced, so that fireproof foaming Polythene material is not allowed to be also easy to produce toxic smoke in burning, advantageously reduces the generation of pernicious gas dioxin；
3. by each component of mixing fireproof foaming polythene material, and controlling smelting temperature to form mixture, favorably It is dispersed in mixture in azodicarbonamide foaming agent and crosslink agent DCP, is conducive to fireproof foaming polythene material Full cross-linked and abundant foaming so that the foam cell uniformity of fireproof foaming polythene material improves, so that fireproof foaming is poly- The elasticity and shock-absorbing shock resistance of vinyl material are not readily susceptible to influence；
4. by stirring, compacting mixture, then extrusion molding, be conducive to the compactness for improving mixture, so that mixture In be not easy to be conducive to there are abscess to improve the foam cell uniformity of fireproof foaming polythene material so that fireproof foaming polyethylene The elasticity and shock-absorbing shock resistance of material are not readily susceptible to influence；
5. being conducive to the abscess of fireproof foaming polythene material by being foamed twice to fireproof foaming polythene material The uniformity improves, so that the elasticity of fireproof foaming polythene material is not readily susceptible to influence, so that fireproof foaming polythene material Its shock-absorbing shock resistance is made to be not readily susceptible to influence while with good flame retardant property.
Specific embodiment
With reference to embodiments, invention is further described in detail.
In following embodiment, ethylene-vinyl acetate copolymer use the trade mark of Nanjing An Site trade Co., Ltd for The Yangtze BASF EVA5110J of 5110J.
In following embodiment, high pressure polyethylene uses the trade mark of connection limited energy company in Hainan in Guangdong for the cyclopentadienyl of 2426H Name petrochemical industry high pressure polyethylene 2426H.
In following embodiment, azodicarbonamide uses the article No. of Jiangsu Suo Pu Chemical Co., Ltd. for the azo two of DN10 Methyl nitrosourea.
Embodiment 1
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 30kg；Ethylene-vinyl acetate copolymer 14kg；Antimony oxide 7kg；Decabromodiphenylethane 25kg；Aluminium hydroxide 30kg；Azodicarbonamide 16kg；Crosslink agent DCP 0.5kg；Zinc oxide 0.7kg；Stearic acid 0.5kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 30kg, ethylene-vinyl acetate copolymer 14kg, three oxidations Two antimony 7kg, decabromodiphenylethane 25kg, aluminium hydroxide 30kg, azodicarbonamide 16kg, crosslink agent DCP 0.5kg, zinc oxide 0.7kg, stearic acid 0.5kg are added in mixer, gradually rise smelting temperature, and controlling smelting temperature is 110 DEG C, is stirred evenly Mixture is formed afterwards and is discharged.
S2, mill, specific as follows:
The temperature that mixture in S1 is poured into double screw extruder, and controls screw rod is 90 DEG C, controls the temperature of barrel Degree is 100 DEG C, and the temperature for controlling hopper is 110 DEG C, and the temperature for controlling die orifice is 85 DEG C, and squeezing out through double screw extruder is in piece Material, is cut into the blank that length is about 1 meter and is returned in the hopper of double screw extruder again, being cut into length again is about 1 meter of blank, so that blank becomes being uniformly mixed, without cold burden, is sufficiently vented the opposed flattened base of compacting and surface Material, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 140 DEG C, and control foamed time is 45min.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the blank taken out in oil pressure foaming machine, control blowing temperature It is 155 DEG C, control foamed time is 25min.Blank is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 25min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 2
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 35kg；Ethylene-vinyl acetate copolymer 12kg；Antimony oxide 10kg；Decabromodiphenylethane 18kg；Aluminium hydroxide 35kg；Azodicarbonamide 10kg；Crosslink agent DCP 0.2kg；Zinc oxide 0.4kg；Stearic acid 0.1kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 35kg, ethylene-vinyl acetate copolymer 12kg, three oxidations Two antimony 10kg, decabromodiphenylethane 18kg, aluminium hydroxide 35kg, azodicarbonamide 10kg, crosslink agent DCP 0.2kg, zinc oxide 0.4kg, stearic acid 0.1kg are added in mixer, gradually rise smelting temperature, and controlling smelting temperature is 125 DEG C, is stirred evenly Mixture is formed afterwards and is discharged.
S2, mill, specific as follows:
The temperature that mixture in S1 is poured into double screw extruder, and controls screw rod is 110 DEG C, controls the temperature of barrel Degree is 115 DEG C, and the temperature for controlling hopper is 125 DEG C, and the temperature for controlling die orifice is 105 DEG C, and squeezing out through double screw extruder is in piece Material, is cut into the blank that length is about 1 meter and is returned in the hopper of double screw extruder again, being cut into length again is about 1 meter of blank, so that blank becomes being uniformly mixed, without cold burden, is sufficiently vented the opposed flattened base of compacting and surface Material, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 165 DEG C, and control foamed time is 25min.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the blank taken out in oil pressure foaming machine, control blowing temperature It is 175 DEG C, control foamed time is 8min.Blank is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 3
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 40kg；Ethylene-vinyl acetate copolymer 10kg；Antimony oxide 8kg；Decabromodiphenylethane 15kg；Aluminium hydroxide 40kg；Azodicarbonamide 18kg；Crosslink agent DCP 0.4kg；Zinc oxide 1kg；Stearic acid 0.2kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 40kg, ethylene-vinyl acetate copolymer 10kg, three oxidations Two antimony 8kg, decabromodiphenylethane 15kg, aluminium hydroxide 40kg, crosslink agent DCP 0.4kg, zinc oxide 1kg, stearic acid 0.2kg add Enter in mixer, pressurization lid is covered, so that pressurization lid is abutted with mixture, so that mixture is in closed environment, and gradually Increase smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted so that pressurization lid closing feed inlet and It is not contacted with mixture, after pressurization lid periphery is cleaned up, then covers pressurization lid, so that pressurization lid is contacted with mixture.When When temperature is increased to 110 DEG C, azodicarbonamide 18kg is added, meanwhile, temperature is every to rise 3 DEG C, first clears up pressurization lid periphery Completely, then by pressurization lid lift, and stir overturning mixed once material, then cover pressurization lid again, when temperature is increased to 125 DEG C When, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 95 DEG C, and the temperature for controlling barrel is 105 DEG C, and the temperature for controlling hopper is 115 DEG C, and the temperature for controlling die orifice is 90 DEG C, warp It is in sheet stock that double screw extruder, which squeezes out, is cut into the blank that length is about 1 meter and the hopper for being returned to double screw extruder again In, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, is sufficiently vented compacting And the blank that surface is opposed flattened, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 145 DEG C, and control foamed time is 40min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 160 DEG C, control foamed time is 20min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 25min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 4
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 45kg；Ethylene-vinyl acetate copolymer 15kg；Antimony oxide 5kg；Decabromodiphenylethane 20kg；Aluminium hydroxide 45kg；Azodicarbonamide 14kg；Crosslink agent DCP 0.6kg；Zinc oxide 0.6kg；Stearic acid 0.3kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 45kg, ethylene-vinyl acetate copolymer 15kg, three oxidations Two antimony 5kg, decabromodiphenylethane 20kg, aluminium hydroxide 45kg, crosslink agent DCP 0.6kg, zinc oxide 0.6kg, stearic acid 0.3kg It is added in mixer, covers pressurization lid, so that pressurization lid is abutted with mixture, so that mixture is in closed environment, and by Edge up high smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closes feed inlet And do not contacted with mixture, after pressurization lid periphery is cleaned up, then pressurization lid is covered, so that pressurization lid is contacted with mixture. When temperature is increased to 115 DEG C, azodicarbonamide 14kg is added, meanwhile, every 4 DEG C of the rising of temperature is first clear by pressurization lid periphery Reason is clean, then pressurization lid is lifted, and stirs overturning mixed once material, then cover pressurization lid again, when temperature is increased to 128 DEG C When, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 100 DEG C, and the temperature for controlling barrel is 108 DEG C, and the temperature for controlling hopper is 118 DEG C, and the temperature for controlling die orifice is 95 DEG C, warp It is in sheet stock that double screw extruder, which squeezes out, is cut into the blank that length is about 1 meter and the hopper for being returned to double screw extruder again In, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, is sufficiently vented compacting And the blank that surface is opposed flattened, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 153 DEG C, and control foamed time is 35min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 165 DEG C, control foamed time is 15min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 33min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 5
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Antimony oxide 6kg；Decabromodiphenylethane 23kg；Aluminium hydroxide 38kg；Azodicarbonamide 12kg；Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, three oxidations Two antimony 6kg, decabromodiphenylethane 23kg, aluminium hydroxide 38kg, crosslink agent DCP 0.8kg, zinc oxide 0.8kg, stearic acid 0.4kg It is added in mixer, covers pressurization lid, so that pressurization lid is abutted with mixture, so that mixture is in closed environment, and by Edge up high smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closes feed inlet And do not contacted with mixture, after pressurization lid periphery is cleaned up, then pressurization lid is covered, so that pressurization lid is contacted with mixture. When temperature is increased to 120 DEG C, azodicarbonamide 12kg is added, meanwhile, every 5 DEG C of the rising of temperature is first clear by pressurization lid periphery Reason is clean, then pressurization lid is lifted, and stirs overturning mixed once material, then cover pressurization lid again, when temperature is increased to 130 DEG C When, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 6
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Antimony oxide 6kg；Decabromodiphenylethane 23kg；Aluminium hydroxide 38kg；Azodicarbonamide 12kg；Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg；It is poly- Olefin elastomer (POE) 8kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, three oxidations Two antimony 6kg, decabromodiphenylethane 23kg, aluminium hydroxide 38kg, crosslink agent DCP 0.8kg, zinc oxide 0.8kg, stearic acid 0.4kg, Polyolefin elastomer (POE) 8kg is added in mixer, pressurization lid is covered, so that pressurization lid is abutted with mixture, so that mixture In closed environment, and gradually rise smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted, So that pressurization lid is closed feed inlet and do not contacted with mixture, after pressurization lid periphery is cleaned up, then pressurization lid is covered, so that Pressurization lid is contacted with mixture.When temperature is increased to 120 DEG C, azodicarbonamide 12kg is added, meanwhile, temperature is every to rise 5 DEG C, first pressurization lid periphery is cleaned out, then pressurization lid is lifted, and stir overturning mixed once material, then cover pressurization again Lid, when temperature is increased to 130 DEG C, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Embodiment 7
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Antimony oxide 6kg；Decabromodiphenylethane 23kg；Aluminium hydroxide 38kg；Azodicarbonamide 12kg；Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg；It is poly- Olefin elastomer (POE) 15kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, three oxidations Two antimony 6kg, decabromodiphenylethane 23kg, aluminium hydroxide 38kg, crosslink agent DCP 0.8kg, zinc oxide 0.8kg, stearic acid 0.4kg, Polyolefin elastomer (POE) 15kg is added in mixer, covers pressurization lid, so that pressurization lid is abutted with mixture, so that mixing Material gradually rises smelting temperature in closed environment.When the temperature in mixer is up to 90 DEG C, pressurization cover is mentioned It rises, so that pressurization lid is closed feed inlet and do not contacted with mixture, after pressurization lid periphery is cleaned up, then covers pressurization lid, So that pressurization lid is contacted with mixture.When temperature is increased to 120 DEG C, be added azodicarbonamide 12kg, meanwhile, temperature often on 5 DEG C are risen, is first cleaned out pressurization lid periphery, then pressurization lid is lifted, and stirs overturning mixed once material, then cover and add again Gland discharges mixture when temperature is increased to 130 DEG C.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 1
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Antimony oxide 6kg；Azodicarbonamide 12kg；Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, three oxidations Two antimony 6kg, crosslink agent DCP 80.kg, zinc oxide 0.8kg, stearic acid 0.4kg are added in mixer, cover pressurization lid, so that plus Gland is abutted with mixture, so that mixture is in closed environment, and gradually rises smelting temperature.When the temperature in mixer When up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closing feed inlet and do not contacted with mixture, pressurization lid periphery is clear After sweeping completely, then pressurization lid is covered, so that pressurization lid is contacted with mixture.When temperature is increased to 120 DEG C, azo diformazan is added Amide 12kg, meanwhile, temperature is every to rise 5 DEG C, first cleans out pressurization lid periphery, then pressurization lid is lifted, and stir overturning Mixed once material, then pressurization lid is covered again, when temperature is increased to 130 DEG C, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 2
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Decabromodiphenylethane 23kg；Azodicarbonamide 12kg；Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, ten bromines two Vinylbenzene 23kg, crosslink agent DCP 0.8kg, zinc oxide 0.8kg, stearic acid 0.4kg are added in mixer, cover pressurization lid, so that Pressurization lid is abutted with mixture, so that mixture is in closed environment, and gradually rises smelting temperature.When the temperature in mixer When degree is up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closing feed inlet and not contacted with mixture, by pressurization lid periphery After cleaning up, then pressurization lid is covered, so that pressurization lid is contacted with mixture.When temperature is increased to 120 DEG C, azo two is added Formamide 12kg, meanwhile, temperature is every to rise 5 DEG C, first cleans out pressurization lid periphery, then pressurization lid is lifted, and stir and turn over Turn mixed once material, then cover pressurization lid again, when temperature is increased to 130 DEG C, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 3
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Aluminium hydroxide 38kg；Azodicarbonamide 12kg； Crosslink agent DCP 0.8kg；Zinc oxide 0.8kg；Stearic acid 0.4kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, hydroxide Aluminium 38kg, crosslink agent DCP 0.8kg, zinc oxide 0.8kg, stearic acid 0.4kg are added in mixer, cover pressurization lid, so that pressurization Lid is abutted with mixture, so that mixture is in closed environment, and gradually rises smelting temperature.When the temperature in mixer reaches At 90 DEG C, pressurization cover is lifted, so that pressurization lid is closed feed inlet and do not contacted with mixture, pressurization lid periphery is cleaned After clean, then pressurization lid is covered, so that pressurization lid is contacted with mixture.When temperature is increased to 120 DEG C, two formyl of azo is added Amine 12kg, meanwhile, temperature is every to rise 5 DEG C, first cleans out pressurization lid periphery, then pressurization lid is lifted, and stir overturning one Secondary mixture, then pressurization lid is covered again, when temperature is increased to 130 DEG C, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 4
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 38kg；Ethylene-vinyl acetate copolymer 13kg；Antimony oxide 4kg；Decabromodiphenylethane 14kg；Aluminium hydroxide 12kg；Azodicarbonamide 20kg；Crosslink agent DCP 0.1kg；Zinc oxide 0.4kg；Stearic acid 0.1kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 38kg, ethylene-vinyl acetate copolymer 13kg, three oxidations Two antimony 4kg, decabromodiphenylethane 14kg, aluminium hydroxide 12kg, crosslink agent DCP 0.1kg, zinc oxide 0.4kg, stearic acid 0.1kg It is added in mixer, covers pressurization lid, so that pressurization lid is abutted with mixture, so that mixture is in closed environment, and by Edge up high smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closes feed inlet And do not contacted with mixture, after pressurization lid periphery is cleaned up, then pressurization lid is covered, so that pressurization lid is contacted with mixture. When temperature is increased to 120 DEG C, azodicarbonamide 20kg is added, meanwhile, every 5 DEG C of the rising of temperature is first clear by pressurization lid periphery Reason is clean, then pressurization lid is lifted, and stirs overturning mixed once material, then cover pressurization lid again, when temperature is increased to 130 DEG C When, mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 5
A kind of fireproof foaming polythene material, the component including following mass fraction:
High pressure polyethylene 37kg；Ethylene-vinyl acetate copolymer 12kg；Antimony oxide 12kg；Decabromodiphenylethane 26kg；Aluminium hydroxide 3kg；Azodicarbonamide 8kg；Crosslink agent DCP 1kg；Zinc oxide 1kg；Stearic acid 0.3kg.
Fireproof foaming polythene material the preparation method is as follows:
S1, mixing, specific as follows:
The temperature control system for opening mixer, by high pressure polyethylene 37kg, ethylene-vinyl acetate copolymer 12kg, three oxidations Two antimony 12kg, decabromodiphenylethane 26kg, aluminium hydroxide 3kg, crosslink agent DCP 1kg, zinc oxide 1kg, stearic acid 0.3kg are added In mixer, covers pressurization lid and so that mixture is in closed environment, and gradually risen so that pressurization lid is abutted with mixture High smelting temperature.When the temperature in mixer is up to 90 DEG C, pressurization cover is lifted, so that pressurization lid closing feed inlet and not It is contacted with mixture, after pressurization lid periphery is cleaned up, then covers pressurization lid, so that pressurization lid is contacted with mixture.Work as temperature When degree is increased to 120 DEG C, azodicarbonamide 8kg is added, meanwhile, temperature is every to rise 5 DEG C, first clears up pressurization lid periphery dry Only, then by pressurization lid lift, and stir overturning mixed once material, then cover pressurization lid again, when temperature is increased to 130 DEG C, Mixture is discharged.
S2, mill, specific as follows:
Mixture in S1 is poured into elevator, boosted machine pours into double screw extruder, and controls the temperature of screw rod Degree is 105 DEG C, and the temperature for controlling barrel is 110 DEG C, and the temperature for controlling hopper is 120 DEG C, and the temperature for controlling die orifice is 100 DEG C, Squeezing out through double screw extruder is in sheet stock, is cut into the blank that length is about 1 meter and the material for being returned to double screw extruder again In bucket, it is cut into the blank that length is about 1 meter again, so that blank becomes being uniformly mixed, without cold burden, through abundant exhaust pressure The opposed flattened blank of reality and surface, and weight is weighed as needed, every 6 blanks are divided into one group.
S3, one step foaming, specific as follows:
Blank is put into the mold for having been coated with the foaming oil-pressure machine of release agent, every 6 blanks are one group, are controlled after molding Blowing temperature is 160 DEG C, and control foamed time is 30min, and die sinking takes out foaming body, obtains plate.
S4, second time of foaming, specific as follows:
It will be put into the second time of foaming machine for having been coated with release agent from the plate taken out in oil pressure foaming machine, control blowing temperature It is 170 DEG C, control foamed time is 10min.Plate is observed full of after mold by the peep hole of second time of foaming machine, and stopping adds Heat, cooling 40min, die sinking are taken out foaming body and are cooled down to get fireproof foaming polythene material.
Comparative example 6
Using Authorization Notice No. for the Chinese patent document of CN101475716B, " fretting map low-smoke non-halogen flame-retardant is plastic-aluminum combined Board core material PP Pipe Compound and preparation method thereof " prepares aluminum-plastic composite board core material PP Pipe Compound.
A kind of dedicated preparation method of fretting map low-smoke non-halogen flame-retardant aluminum-plastic composite board core material, comprising the following steps:
S1, weigh 40kg magnesium hydroxide, 10kg zinc borate, 5kg ammonium polyphosphate, 1kg antimony oxide, 0.5kg molybdenum oxide, 2kgPE wax, 3kg Aluminate and 0.5kg stearic acid are added into blender together, stir 18min with the revolving speed of 600r/min, when When temperature in blender is increased to 115 DEG C, add 20kg high pressure polyethylene, 10kg ethylene-vinyl acetate copolymer, 5kgSEBS and 5kg EP rubbers continues to put immediately with the revolving speed stirring 5min of 600r/min when temperature is increased to 120 DEG C Expect in hopper, then with screw diameter be 75mm, the parallel double-screw extruder that draw ratio is 42:1, at a temperature of 120 DEG C Main body master batch A is made in extruding pelletization.
S2,20kg azodicarbonamide, 15kg azodiisobutyronitrile, 15kg diethyl azodiformate, 10kg pairs are weighed Toluene sulfonyl hydrazide, 5kg stearic acid, 3kg consolidate wax, 3kgPE wax, 3kgPP wax and 1kg calcium stearate and are added together to another blender In, the poly- second of 20kg high pressure is added when the temperature in blender is increased to 70 DEG C with the revolving speed stirring 10min of 600r/min Alkene, 5kg ethylene-vinyl acetate copolymer, 5kg ethylene acrylic acid co polymer, 5kg ethylene ethyl acrylate resin, continue with The revolving speed of 600r/min stirs 5min, and when temperature is increased to 80 DEG C, blowing is in hopper, then with screw diameter immediately 75mm, the parallel screw extruder that draw ratio is 42:1, the extruding pelletization at a temperature of 80 DEG C prepare foaming master batch B.
S3, it two master batch of A, B obtained above is mixed in batch mixer in the ratio of A:B=96:4 mixes 5min, directly exist Pulling-on piece machine upper drawing piece, and it is compound with aluminium sheet, aluminum-plastic composite board core material PP Pipe Compound is made.
Experiment 1
Above embodiments are respectively cut and comparative example prepares resulting fireproof foaming polythene material to form 5cm* The square of 5cm*3cm, and to the pressure 10s of fireproof foaming polyethylene square application 10N to compress fireproof foaming polyethylene square, Pressure is removed, and records fireproof foaming polyethylene square and restores to the time (s) of original state with the elasticity of testing product.
Experiment 2
More than GB/T6344-2008 " measurement of flexible foam polymeric material tensile strength and elongation at break " detection Embodiment and comparative example prepare the tensile strength (MPa) of resulting materials and detect the tensile strength (MPa) of polyethylene foamed, The polyethylene foamed of Shijiazhuang Great Wall rubber and plastic Co., Ltd is purchased from for the polyethylene foamed of detection.
Experiment 3
According to GB/T2406.2-2009 " plastics with oxygen index method measure burning behavior part 2: room temperature test " detection with Upper embodiment and comparative example prepare the oxygen index (OI) of resulting materials.
The above detection data is shown in Table 1.
Table 1
Recovery time (s) Tensile strength (MPa) Oxygen index (OI)
Embodiment 1 0.9 0.20 33
Embodiment 2 0.9 0.22 34
Embodiment 3 0.6 0.26 36
Embodiment 4 0.6 0.24 35
Embodiment 5 0.7 0.26 36
Embodiment 6 0.4 0.28 36
Embodiment 7 0.4 0.30 35
Polyethylene foamed 0.3 0.32 18
Comparative example 1 2.1 0.12 27
Comparative example 2 2.5 0.14 30
Comparative example 3 1.8 0.10 25
Comparative example 4 1.9 0.17 28
Comparative example 5 1.7 0.18 29
Comparative example 6 / / 33
It can be obtained according to the data comparison of embodiment 3-5 in table 1 and comparative example 1-3, three oxidations two are all made of in embodiment 3-5 Antimony, decabromodiphenylethane and aluminium hydroxide are mixed in a certain proportion as fire retardant, only with antimony oxide in comparative example 1 As fire retardant, only with decabromodiphenylethane as fire retardant in comparative example 2, only with aluminium hydroxide conduct in comparative example 3 Fire retardant, and restore after the compression of embodiment 3-5 to the time of original state to be significantly shorter than comparative example 1-3, and embodiment 3-5 by Restore after pressure to the gap of the time of original state and polyethylene foamed much smaller than comparative example 1-3, the i.e. fireproof foaming of embodiment 3-5 The elastic property of polythene material is much larger than comparative example 1-3 better than comparative example 1-3, the tensile strength of embodiment 3-5, and real The tensile strength of a 3-5 and the gap of polyethylene foamed are applied much smaller than comparative example 1-3, the oxygen index (OI) of embodiment 3-5 is much higher than Comparative example 1-3's, i.e., the anti-flammability of embodiment 3-5 illustrates better than comparative example 1-3 by using antimony oxide, ten bromines two Vinylbenzene and aluminium hydroxide are mixed in a certain proportion as fire retardant, are conducive to improve the fire-retardant of fireproof foaming polythene material Effect, meanwhile, so that the elasticity and tensile strength of fireproof foaming polythene material are not readily susceptible to influence, so that fireproof foaming Material makes fireproof foaming polythene material have good elasticity and tensile strength while having good anti-flammability, make The shock-absorbing shock resistance for obtaining fireproof foaming polythene material is not readily susceptible to influence.
It can be obtained according to the data comparison of embodiment 3-5 in table 1 and comparative example 4-5, the antimony oxide in embodiment 3-5 Mass fraction is in the range of 5-10 parts, and the mass fraction of decabromodiphenylethane is in the range of 15-25 parts, aluminium hydroxide Mass fraction in the range of 30-45 parts, the mass fraction of azodicarbonamide is in the range of 10-18 parts, crosslinking The mass fraction of agent DCP is in the range of 0.2-0.8 parts, and the mass fraction of the antimony oxide in comparative example 4-5 is in 5- Outside 10 parts of range, outside 15-25 parts of range, the mass fraction of aluminium hydroxide exists the mass fraction of decabromodiphenylethane Outside 30-45 parts of range, the mass fraction of azodicarbonamide is outside 10-18 parts of range, the mass fraction of crosslink agent DCP Outside 2-8 parts of range, and restore after the compression of embodiment 3-5 to the time of original state to be considerably shorter than comparative example 4-5, and implement Restore after the compression of example 3-5 to the gap of the time of original state and polyethylene foamed much smaller than comparative example 4-5, i.e. embodiment 3-5 Fireproof foaming polythene material elastic property better than comparative example 4-5, the tensile strength of embodiment 3-5 is much larger than comparative example 4-5's, and the tensile strength of embodiment 3-5 and the gap of polyethylene foamed are much smaller than comparative example 4-5, the oxygen of embodiment 3-5 Much higher than comparative example 4-5, i.e. the anti-flammability of embodiment 3-5 illustrates better than comparative example 4-5 through three oxidation two of control index The ratio cooperation of antimony, decabromodiphenylethane, aluminium hydroxide, azodicarbonamide and crosslink agent DCP, it is poly- to be conducive to fireproof foaming Vinyl material it is abundant foaming and it is full cross-linked so that in fireproof foaming polythene material be added fire retardant after be not easy Its elasticity and tensile strength are had an impact, while being conducive to fireproof foaming polythene material holding good flame retardant property Be conducive to fireproof foaming polythene material and keep good shock-absorbing shock resistance.
It can be obtained according to the data comparison of embodiment 1-5 in table 1 and comparative example 6, embodiment 1-5 is using the component in the present invention And preparation method prepares to form fireproof foaming polythene material, comparative example 6 uses prior art preparation fire proofing, and implements The oxygen index (OI) of example 1-5 is above comparative example 6, i.e. the flame retardant property of embodiment 1-5 better than comparative example 6, illustrate by using Component and preparation method of the invention prepares fireproof foaming polythene material, is conducive to enhance fireproof foaming polythene material Flame retardant property, while the fire retardant being added being made to be not easy to influence the elasticity and tensile strength of fireproof foaming polythene material, So that preparing while resulting fireproof foaming polythene material has good flame retardant property has good shock-absorbing anti- Shake ability.
It can be obtained according to the data comparison of embodiment 1-2 in table 1 and embodiment 3-5, embodiment 1-2 lacks than embodiment 3-5 Azodicarbonamide is added at a certain temperature and periodically cleans in temperature ramp de pressurization lid periphery and stir and turns over Turn the operation of mixture, and the internal mixing pass of embodiment 1-2 carries out in open environment, the internal mixing pass of embodiment 3-5 exists It is carried out in closed environment, in addition, temperature control condition and time of the embodiment 1-2 and embodiment 3-5 in the operation of each step Control condition is inconsistent, and restores to be shorter than embodiment 1-2, and embodiment to the time of original state after the compression of embodiment 3-5 Restore after the compression of 3-5 to the gap of the time of original state and polyethylene foamed less than embodiment 1-2, i.e. embodiment 3-5's is anti- The elastic property of fiery polyethylene foamed material is greater than embodiment 1-2 better than embodiment 1-2, the tensile strength of embodiment 3-5, And the tensile strength of embodiment 3-5 and the gap of polyethylene foamed, less than embodiment 1-2, the oxygen index (OI) of embodiment 3-5 is higher than Embodiment 1-2's, i.e. the anti-flammability of embodiment 3-5 illustrates better than embodiment 1-2 by increasing azodicarbonamide certain At a temperature of be added and periodically cleaned in temperature ramp de pressurization lid periphery and stir overturning mixture operation, pass through control Internal mixing pass processed carries out in confined conditions, by controlling mill, time and the temperature of one step foaming and second time of foaming, favorably In the abundant foaming of fireproof foaming polythene material and full cross-linked, to be conducive to improve fireproof foaming polythene material Foam cell uniformity, so that the elasticity and tensile strength of fireproof foaming polythene material are not readily susceptible to influence, meanwhile, it is also advantageous In the flame retardant property of enhancing fireproof foaming polythene material, so that fireproof foaming polythene material has the same of good anti-flammability When be conducive to fireproof foaming polythene material and have good shock-absorbing shock resistance.
It can be obtained according to the data comparison of embodiment 3-5 in table 1 and embodiment 6-7, the component ratio embodiment in embodiment 6-7 Component in 3-5 has increased polyolefin elastomer newly, and restores to be shorter than embodiment 3- to the time of original state after the compression of embodiment 6-7 5, and restore after the compression of embodiment 6-7 to the gap of the time of original state and polyethylene foamed less than embodiment 3-5, i.e., in fact The elastic property of the fireproof foaming polythene material of a 6-7 is applied better than embodiment 3-5, the tensile strength of embodiment 6-7 is greater than Embodiment 3-5's, and the tensile strength of embodiment 6-7 and the gap of polyethylene foamed are much smaller than embodiment 3-5, embodiment 6- 7 oxygen index (OI) is close with embodiment 3-5's, illustrates that it is anti-to be conducive to enhancing to a certain extent by the way that polyolefin elastomer is added The elasticity and tensile strength of fiery polyethylene foamed material are conducive to the shock-absorbing antidetonation energy for enhancing fireproof foaming polythene material Power, so that the shock-absorbing shock resistance of fireproof foaming polythene material is not readily susceptible to the influence of fire retardant.
The embodiment of present embodiment is presently preferred embodiments of the present invention, not limits protection of the invention according to this Range, therefore: the equivalence changes that all structures under this invention, shape, principle are done, should all be covered by protection scope of the present invention it It is interior.

Claims (10)

1. a kind of fireproof foaming polythene material, it is characterized in that: including the component of following mass fraction:
30-45 parts of high pressure polyethylene；
10-15 parts of ethylene-vinyl acetate copolymer；
5-10 parts of antimony oxide；
15-25 parts of decabromodiphenylethane；
30-45 parts of aluminium hydroxide；
10-18 parts of azodicarbonamide；
0.2-0.8 parts of crosslink agent DCP；
0.4-1 parts of zinc oxide；
0.1-0.5 parts of stearic acid.
2. fireproof foaming polythene material according to claim 1, it is characterized in that: further including the group of following mass fraction Point:
8-15 parts of polyolefin elastomer.
3. a kind of preparation method of the fireproof foaming polythene material as described in claim 1-2 is any, it is characterized in that: include with Lower step:
S1, mixing: each component of fireproof foaming polythene material is mixed, and heats mixing, and control smelting temperature is 110 DEG C -125 DEG C, it stirs evenly, forms mixture；
S2, mill: by mixture stirring, compacting, then extrusion molding, blank is formed；
S3, one step foaming: blank is added in mold and carries out moulded from foam, obtains plate；
S4, second time of foaming: taking out plate and add and carry out second time of foaming in mold, and cooling 25min-40min, taking-up cools down, Obtain fireproof foaming polythene material.
4. the preparation method of fireproof foaming polythene material according to claim 3, it is characterized in that: in the step S1, High pressure polyethylene, ethylene-vinyl acetate copolymer, antimony oxide, decabromodiphenylethane, aluminium hydroxide, crosslinking agent is first added DCP, zinc oxide, stearic acid, and gradually rise temperature are added azodicarbonamide, work as temperature when temperature is up to 110 DEG C -120 DEG C When degree is up to 125 DEG C -130 DEG C, draw operation is carried out.
5. the preparation method of fireproof foaming polythene material according to claim 4, it is characterized in that: in the step S1, During temperature is gradually increasing, temperature is every to rise 3 DEG C -5 DEG C, stirring overturning mixed once material.
6. the preparation method of fireproof foaming polythene material according to claim 5, it is characterized in that: the step S1 is close It is carried out in the environment closed.
7. the preparation method of fireproof foaming polythene material according to claim 6, it is characterized in that: in the step S1, By pushing pressurization lid to form closed reaction environment, when stirring overturns mixture, lift pressurization lid, and lifting pressurization Pressurization lid periphery is cleaned before lid.
8. according to the preparation method of any fireproof foaming polythene material of claim 3-7, it is characterized in that: the step The temperature in S2, adding mixture into double screw extruder, and controlling screw rod respectively is 95 DEG C -105 DEG C, controls the temperature of barrel Degree is 105 DEG C -110 DEG C, and the temperature for controlling hopper is 115 DEG C -120 DEG C, and the temperature for controlling die orifice is 90-100 DEG C.
9. according to the preparation method of any fireproof foaming polythene material of claim 3-7, it is characterized in that: the step In S3, the temperature control of one step foaming is 145 DEG C -160 DEG C, and the time control of one step foaming is 30min-40min.
10. according to the preparation method of any fireproof foaming polythene material of claim 3-7, it is characterized in that: the step In rapid S4, the temperature control of second time of foaming is 160 DEG C -170 DEG C, and the time control of second time of foaming is 10-20min.
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Publication number Priority date Publication date Assignee Title
CN112574492A (en) * 2020-12-14 2021-03-30 湖北科普达高分子材料股份有限公司 Flame-retardant polyethylene optical cable sheath material
CN115353681A (en) * 2022-08-20 2022-11-18 广州合强暖通空调材料有限公司 High-flame-retardant heat-insulating material and preparation method thereof

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CN101397376A (en) * 2008-10-17 2009-04-01 石家庄启宏橡塑制品有限公司 Method for producing high pressure polyethylene high-time foaming material
CN102492212A (en) * 2011-12-16 2012-06-13 蔡龙源 Preparation method of foaming material forming part for shoes
CN105504457A (en) * 2016-01-26 2016-04-20 福建三盛实业有限公司 Anti-static/flame-retardant XPE environment-friendly foam material for vehicle and preparation method of XPE environment-friendly foam material

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CN101397376A (en) * 2008-10-17 2009-04-01 石家庄启宏橡塑制品有限公司 Method for producing high pressure polyethylene high-time foaming material
CN102492212A (en) * 2011-12-16 2012-06-13 蔡龙源 Preparation method of foaming material forming part for shoes
CN105504457A (en) * 2016-01-26 2016-04-20 福建三盛实业有限公司 Anti-static/flame-retardant XPE environment-friendly foam material for vehicle and preparation method of XPE environment-friendly foam material

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CN112574492A (en) * 2020-12-14 2021-03-30 湖北科普达高分子材料股份有限公司 Flame-retardant polyethylene optical cable sheath material
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CN115353681B (en) * 2022-08-20 2023-12-29 广州合强暖通空调材料有限公司 High-flame-retardance heat-insulation material and preparation method thereof

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Application publication date: 20190730