CN106928537A - A kind of high-strength polyethylene foam board and preparation method - Google Patents
A kind of high-strength polyethylene foam board and preparation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0807—Copolymers of ethene with unsaturated hydrocarbons only containing more than three carbon atoms
- C08L23/0815—Copolymers of ethene with aliphatic 1-olefins
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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- 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
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- 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
- C08J2323/08—Copolymers of ethene
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- 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
- C08J2423/06—Polyethene
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
A kind of high-strength polyethylene foam board and preparation method, the foam board raw material contain the material of following mass parts：Low-density high-pressure polyethylene 30 50, metallocene PE A 20 30, metallocene PE B 30 40, azodicarbonamide 13 15, except ammonia agent 35, crosslinking agent 0.5 0.7, zinc oxide 0.7 0.9, zinc stearate 0.02 0.1, Triallyl isocyanurate 0.1 0.3, stearic acid 0.2 0.5.The present invention has following major advantage compared with prior art：1st, with low-density high-pressure polyethylene as base material, two kinds of metallocene PEs of addition carry out blending and modifying, on the basis of expanded material tensile strength and tearing strength is significantly improved, realize the good operability of intermingling material.2nd, the generation of acetophenone and the isopropanol of 2 phenyl 2 is fundamentally solved；The concentration of expanded material ammonia in closed environment is set to be less than 3ppm.
Description
Technical field
The present invention relates to a kind of foamed material, particularly high-strength polyethylene foam board and preparation method.
Background technology
Polyethylene foam material is a kind of using extensive padded coaming.Polyethylene has density small, chemical property
Stabilization, not corrosion-vulnerable is tough and tensile, have flexible, rub resistance, good processability, it is easy to shaping and the features such as price is relatively inexpensive.Poly- second
Alkene foam is widely used in the buffers packet of precision instrumentation, household electrical appliance, glass and ceramic, handicraft, valuables etc.
Dress, may also be fabricated which thermally insulated container of frozen food and warm-served food product etc..Traditional polyethylene be use low density polyethylene (LDPE) for
Base material, adds a certain amount of auxiliary agent and is prepared from.The problem of presence is：The mechanical property of conventional polyethylene foamed material is relatively low,
Be mainly reflected in tensile strength and tearing strength be poor, relatively low tensile strength make its some intensity requirements to foamed material compared with
Field high can not reach use requirement.Additionally, recently as the increasingly raising of environmental requirement, the environmental protection chemical conversion of foamed material
Be research and development focus, in conventional polyethylene expanded material acetophenone, 2- phenyl -2- isopropanols (crosslinking agent cumyl peroxide
Decompose residue) and ammonia (foaming agent azodicarbonamide decompose produce gas) to the adverse effect of environmental protection generation, turn into
Problem demanding prompt solution.
The content of the invention
The present invention is intended to provide a kind of good mechanical performance, the high-strength polyethylene foam board beneficial to environmental protection.
Present invention also offers the preparation method of the high-strength polyethylene foam board.
To reach above-mentioned purpose, the technical solution used in the present invention is such：
A kind of high-strength polyethylene foam board, foam board raw material contains the material of following mass parts：Low-density high-pressure
Polyethylene 30-50, metallocene PE A 20-30, metallocene PE B 30-40, azodicarbonamide 13-15, except ammonia agent
3-5, crosslinking agent 0.5-0.7, zinc oxide 0.7-0.9, zinc stearate 0.02-0.1, Triallyl isocyanurate 0.1-0.3, firmly
Resin acid 0.2-0.5.
Above-mentioned high-strength polyethylene foam board, the metallocene PE A is Exxon MPE2018HA, the cyclopentadienyl gold
Category polyethylene B is Tao Shi Elite5220G, and the crosslinking agent is HJ-30 (peroxidating (2- ethylhexyls) carbonic acid tert-pentyl ester), institute
State except ammonia agent is HJ-B35.
Above-mentioned high-strength polyethylene foam board, also contains the carbon black of 0.2-0.5 mass parts in the raw material.
A kind of method for preparing above-mentioned high-strength polyethylene foam board, preparation is carried out as steps described below：
A, weigh each raw material according to proportional quantity；
B, by the metallocene PE A of proportional quantity, metallocene PE B and crosslinking agent put into banbury melt blending, control
Between 120-150 DEG C, mixing time is 5-10 minutes to mixing temperature processed；Thin logical refining 5-10 times on a mill of mixing body,
Go out to knead body piece using film-discharging machine standby；
C, take step b preparation mixing body piece and proportional quantity except ammonia agent, zinc oxide, zinc stearate, triallyl isocyanide
Urea acid esters, carbon black are put into banbury and are kneaded, mixing time 10-15 minutes, first step when mixing temperature rises to 125 DEG C
Mixing process terminates；
Input azodicarbonamide starts second step mixing in d, banbury, and non-pressurized state dallies 150 seconds, and pressurization lid adds
Densification is refined 2-3 minutes, and second step mixing terminates；
E, the foaming agent in banburying chamber is cleaned up, continue to knead 2 minutes, mixer mixing operation terminates；
F, the mixing body that will be poured out are refined on a mill, thin logical 3-5 times, are fabricated to prefoam material block；
G, prefoam material block is put into preheated plate vulcanization machine die one step cure is carried out at 135 DEG C -155 DEG C
Foaming 35-40min；
H, one section of foaming foaming body out is put into the mould of preheated second time of foaming machine at 150 DEG C -165 DEG C
Remove foam 40min-50min；
I, cooling and demolding, are obtained foaming plate.
The present invention has following major advantage compared with prior art：
1st, with low-density high-pressure polyethylene as base material, two kinds of metallocene PEs are added in proportion low density polyethylene (LDPE) is entered
Row blending and modifying, on the basis of expanded material tensile strength and tearing strength is significantly improved, realizes intermingling material good
Operability and processing characteristics.
2nd, the auxiliary agent of selection includes environment-friendly type crosslinking agent and except ammonia agent, and peroxidating of the environment-friendly type crosslinking agent without phenyl ring is organic
Thing, fundamentally solves the generation of acetophenone and 2- phenyl -2- isopropanols；Except ammonia agent can decompose the ammonia for producing with foaming agent
Solid/liquid/gas reactions simultaneously capture the hydrogen on ammonia, destroy the molecular structure of ammonia, and the final ammonia eliminated in expanded material makes expanded material
The concentration of ammonia is less than 3ppm in closed environment, meets the requirement of environmental protection.
3rd, product of the present invention is based on tensile resistance higher, compared to common polythene foamed material hot pressing part or part of colding pressing
With epidermis is smooth be difficult fold the characteristics of.
Specific embodiment
Analysis and research think that the main cause of existing polyethylene tensile strength and tearing strength difference is its molecular structure
Cause, show：(1) side chain degree is big and long-chain branch ratio is big, and crystallinity is relatively low；(2) molecular weight distribution is wider, mechanical property compared with
Difference；(3) molecule regularity is poor, and crystallinity is relatively low.Polyethylene tensile strength to be improved, need to divide from polyethylene is improved
Minor structure is started with.The present invention carries out blending and modifying using metallocene PE to low density polyethylene (LDPE), wherein adding Exxon
MPE2018HA improves expanded material tensile strength and tearing strength；Addition Tao Shi Elite5220G improve Exxon MPE2018HA
Material melt strength at high temperature, realizes intermingling material good operability and processing characteristics.
, using ethene as comonomer, side chain is very short, and crystallinity is high, and tensile strength is reachable for Exxon MPE2018HA
More than 60MPa, functions thus as the improved main base material of polyethylene mechanical property.But the melt strength mistake of Exxon MPE2018HA
It is low, high-foaming material is prepared with low density polyethylene (LDPE) blending, addition fails to be obviously improved mechanical property, addition less than 20%
It is poor higher than 20% process controllability, it is difficult to realize industrialized production.Pin is in this regard, present invention addition Tao Shi Elite5220G are in auxiliary
While improving foam board mechanical property, manufacturability issues are solved.Tao Shi Elite5220G are formed using octene copolymer, are melted
Body intensity is substantially better than Exxon MPE2018HA.After adding a certain proportion of Tao Shi Elite5220G, Exxon is substantially improved
MPE2018HA is expandable with low density polyethylene blend, improves the adding proportion of Exxon MPE2018HA, from
And polyethylene foam material mechanical property is improve, and successfully realize industrialized production.
With the continuous improvement of environmental requirement, it is acetophenone, 2- phenyl -2- that foamed material is more concerned in terms of environmental protection
(foaming agent azodicarbonamide decomposes the gas for producing for isopropanol (the decomposition residue of crosslinking agent cumyl peroxide) and ammonia
Body) environmental issue.In consideration of it, that present invention selection is environment-friendly type crosslinking agent HJ-30 (peroxidating (2- ethylhexyls) carbonic acid uncles
Pentyl ester).HJ-30 (peroxidating (2- ethylhexyls) carbonic acid tert-pentyl ester) is a kind of environment-friendly type crosslinking agent, is had by the Dongguan high chemical industry of person of outstanding talent
Limit company produces.The environment-friendly type crosslinking agent is a kind of peroxidating organic matter without phenyl ring, thus fundamentally solves benzene
The generation of ethyl ketone and 2- phenyl -2- isopropanols, and its decomposition temperature and consumption are suitable with the crosslinking agent of routine, can meet technique
Production requirement.The trade mark except ammonia agent is HJ-B35, is produced by Dongguan Hao Jun Chemical Co., Ltd.s.Except ammonia agent can be with foaming
Agent is decomposed the ammonia for producing and reacts and capture the hydrogen on ammonia, the molecular structure of ammonia is destroyed, in final elimination expanded material
Ammonia, makes the concentration of expanded material ammonia in closed environment less than 3ppm, reaches environmentally friendly purpose.
The present invention is accordingly improved according to the improvement of raw material proportioning in preparation method.For metallocene PE
The low unmanageable defect of melt strength, increased metallocene PE pretreatment process, make metallocene PE partial cross-linked,
Reach the purpose for improving melt strength.Concrete operations are：Using banbury by two kinds of metallocene PE melt blendings, add and hand over
Connection agent, between 120-150 DEG C, mixing time is 5-10 minutes to control mixing temperature；Mixing body thin logical refining on a mill
It is 5-10 times, standby using film-discharging machine slice.
The specific embodiment of several high-strength polyethylene foam board proportionings of the present invention presented below：
Embodiment 1：Low-density high-pressure polyethylene 30kg is weighed by proportioning, Exxon MPE2018HA 24kg, Tao Shi
Elite5220G 32kg, azodicarbonamide 13kg, HJ-B35 3kg, HJ-30 (peroxidating (2- ethylhexyls) carbonic acid uncle penta
Ester) 0.52kg, zinc oxide 0.7kg, zinc stearate 0.02kg, Triallyl isocyanurate 0.15kg, stearic acid 0.2kg, charcoal
Black 0.2kg.
Embodiment 2：Low-density high-pressure polyethylene 35kg is weighed by proportioning, Exxon MPE2018HA 20kg, Tao Shi
Elite5220G 40kg, azodicarbonamide 13.5kg, HJ-B35 3.5kg, HJ-30 (peroxidating (2- ethylhexyls) carbonic acid
Tert-pentyl ester) 0.7kg, zinc oxide 0.75kg, zinc stearate 0.05kg, Triallyl isocyanurate 0.1kg, stearic acid
0.25kg, carbon black 0.5kg.
Embodiment 3：Low-density high-pressure polyethylene 50kg is weighed by proportioning, Exxon MPE2018HA 25kg, Tao Shi
Elite5220G 35kg, azodicarbonamide 15kg, HJ-B35 5kg, HJ-30 (peroxidating (2- ethylhexyls) carbonic acid uncle penta
Ester) 0.62kg, zinc oxide 0.9kg, zinc stearate 0.1kg, Triallyl isocyanurate 0.25kg, stearic acid 0.4kg, carbon black
0.3kg。
Embodiment 4：Low-density high-pressure polyethylene 45kg is weighed by proportioning, Exxon MPE2018HA 30kg, Tao Shi
Elite5220G 30kg, azodicarbonamide 14.5kg, HJ-B35 4.5kg, HJ-30 (peroxidating (2- ethylhexyls) carbonic acid
Tert-pentyl ester) 0.5kg, zinc oxide 0.85kg, zinc stearate 0.08kg, Triallyl isocyanurate 0.3kg, stearic acid 0.5kg.
Embodiment 5：Low-density high-pressure polyethylene 40kg is weighed by proportioning, Exxon MPE2018HA 28kg, Tao Shi
Elite5220G 34kg, azodicarbonamide 14kg, HJ-B35 4kg, HJ-30 (peroxidating (2- ethylhexyls) carbonic acid uncle penta
Ester) 0.6kg, zinc oxide 0.8kg, zinc stearate 0.06kg, Triallyl isocyanurate 0.2kg, stearic acid 0.35kg.
The preparation of high-strength polyethylene foam board：
By Exxon MPE2018HA, Tao Shi Elite5220G and HJ-30 (peroxidating (2- ethylhexyls) carbon of proportional quantity
Sour tert-pentyl ester) input banbury melt blending, between 120-150 DEG C, mixing time is 5-10 minutes to control mixing temperature；It is mixed
Thin logical refining 5-10 times on a mill of refining body, goes out to knead body piece standby using film-discharging machine；Take above-mentioned mixing body and proportional quantity
HJ-B35, zinc oxide, zinc stearate, Triallyl isocyanurate, carbon black are put into banbury and are kneaded, mixing time
10-15 minutes, first step mixing process terminated when mixing temperature rises to 125 DEG C；Input azodicarbonamide starts in banbury
Second step is kneaded, and non-pressurized state dallies 150 seconds, pressurization lid pressurization banburying 2-3 minutes, and second step mixing terminates；By banburying chamber
On foaming agent clean up, continue knead 2 minutes, mixer mixing operation terminates；The mixing body that will be poured out is on a mill
Refining, it is thin logical 3-5 times, it is fabricated to prefoam material block；By prefoam material block be put into preheated vulcanizer mold 135 DEG C-
One step cure foaming 5-40min is carried out at 155 DEG C；One section of foaming foaming body out is put into preheated second time of foaming machine
Go down foam 40min-50min in mould at 150 DEG C -165 DEG C；Cooling and demolding, that is, be obtained foaming plate.
High-strength polyethylene foam board of the present invention is as follows with the mechanical property contrast of common polythene foam board：
Claims (4)
1. a kind of high-strength polyethylene foam board, it is characterised in that foam board raw material contains the material of following mass parts：It is low
Density polyethylene from high pressure process 30-50, metallocene PE A 20-30, metallocene PE B 30-40, azodicarbonamide 13-
15, except ammonia agent 3-5, crosslinking agent 0.5-0.7, zinc oxide 0.7-0.9, zinc stearate 0.02-0.1, Triallyl isocyanurate
0.1-0.3, stearic acid 0.2-0.5.
2. high-strength polyethylene foam board according to claim 1, it is characterised in that the metallocene PE A is
Exxon MPE2018HA, the metallocene PE B are Tao Shi Elite5220G, and the crosslinking agent is HJ-30 (peroxidating (2-
Ethylhexyl) carbonic acid tert-pentyl ester), it is described except ammonia agent is HJ-B35.
3. high-strength polyethylene foam board according to claim 2, it is characterised in that also contain 0.2- in the raw material
The carbon black of 0.5 mass parts.
4. a kind of preparation method for preparing the high-strength polyethylene foam board as described in claim any one of 1-3, its feature exists
In preparation is carried out as steps described below：
A, weigh each raw material according to proportional quantity；
B, by the metallocene PE A of proportional quantity, metallocene PE B and crosslinking agent put into banbury melt blending, control it is close
Between 120-150 DEG C, mixing time is 5-10 minutes to refining temperature；Thin logical refining 5-10 times on a mill of mixing body, utilizes
It is standby that film-discharging machine goes out to knead body piece；
C, take step b preparation mixing body piece and proportional quantity except ammonia agent, zinc oxide, zinc stearate, triallyl isocyanuric acid
Ester, carbon black are put into banbury and are kneaded, mixing time 10-15 minutes, first step mixing when mixing temperature rises to 125 DEG C
Process terminates；
Input azodicarbonamide starts second step mixing in d, banbury, and non-pressurized state dallies 150 seconds, and pressurization lid pressurization is close
Refining 2-3 minutes, second step mixing terminates；
E, the foaming agent in banburying chamber is cleaned up, continue to knead 2 minutes, mixer mixing operation terminates；
F, the mixing body that will be poured out are refined on a mill, thin logical 3-5 times, are fabricated to prefoam material block；
G, prefoam material block is put into preheated plate vulcanization machine die one step cure foaming is carried out at 135 DEG C -155 DEG C
35-40min；
H, the foaming body by one section of foaming out are put into pressure of going down at 150 DEG C -165 DEG C in the mould of preheated second time of foaming machine
Foaming 40min-50min；
I, cooling and demolding, are obtained foaming plate.
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Cited By (6)
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| CN108841032A (en) * | 2018-05-29 | 2018-11-20 | 杭州鼎好新材料有限公司 | A kind of high-strength polyethylene material and preparation method thereof |
| CN109181062A (en) * | 2018-08-09 | 2019-01-11 | 南京聚隆科技股份有限公司 | A kind of automobile sealed strip material of fretting map and preparation method thereof |
| CN109233047A (en) * | 2018-08-09 | 2019-01-18 | 张剑 | A kind of ethylene closed cell cystosepiment |
| CN110240729A (en) * | 2019-07-17 | 2019-09-17 | 晋江成昌鞋业有限公司 | EVA foaming is with removing ammonia agent and preparation method thereof |
| CN115260641A (en) * | 2022-09-29 | 2022-11-01 | 石家庄启宏新材料制品有限公司 | High-strength polyethylene foam material and preparation method thereof |
| CN115534404A (en) * | 2022-12-01 | 2022-12-30 | 安徽盒艺包装有限公司 | Environment-friendly packing box material, packing box and preparation device thereof |
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| CN104448521A (en) * | 2014-11-18 | 2015-03-25 | 安踏（中国）有限公司 | EVA composite foam material and preparation method thereof |
| CN105273282A (en) * | 2015-09-29 | 2016-01-27 | 安徽蓝德集团股份有限公司 | Flame retardation control cable with excellent mechanical performances |
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