CN106632863A - Non-chemically-crosslinked polyethylene foamed sheet and preparation method thereof - Google Patents
Non-chemically-crosslinked polyethylene foamed sheet and preparation method thereof Download PDFInfo
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- CN106632863A CN106632863A CN201510733083.XA CN201510733083A CN106632863A CN 106632863 A CN106632863 A CN 106632863A CN 201510733083 A CN201510733083 A CN 201510733083A CN 106632863 A CN106632863 A CN 106632863A
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- foaming
- foamed sheet
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- polyethylene
- crosslinked polyethylene
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- 229920003020 cross-linked polyethylene Polymers 0.000 title claims abstract description 24
- 239000004703 cross-linked polyethylene Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 229920000573 polyethylene Polymers 0.000 claims abstract description 47
- 239000004698 Polyethylene Substances 0.000 claims abstract description 46
- -1 polyethylene Polymers 0.000 claims abstract description 45
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 32
- 239000011147 inorganic material Substances 0.000 claims abstract description 32
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 23
- 239000003112 inhibitor Substances 0.000 claims abstract description 23
- 239000003999 initiator Substances 0.000 claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 21
- 239000000178 monomer Substances 0.000 claims abstract description 17
- 239000004088 foaming agent Substances 0.000 claims description 34
- 238000005187 foaming Methods 0.000 claims description 26
- 238000002347 injection Methods 0.000 claims description 26
- 239000007924 injection Substances 0.000 claims description 26
- 238000001125 extrusion Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 239000004594 Masterbatch (MB) Substances 0.000 claims description 14
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 13
- 239000004604 Blowing Agent Substances 0.000 claims description 11
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 10
- 239000013078 crystal Substances 0.000 claims description 9
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 8
- 239000008188 pellet Substances 0.000 claims description 7
- 238000005453 pelletization Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 7
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 6
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 6
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 5
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 4
- KOMNUTZXSVSERR-UHFFFAOYSA-N 1,3,5-tris(prop-2-enyl)-1,3,5-triazinane-2,4,6-trione Chemical compound C=CCN1C(=O)N(CC=C)C(=O)N(CC=C)C1=O KOMNUTZXSVSERR-UHFFFAOYSA-N 0.000 claims description 3
- ICFXCSLDPCMWJI-UHFFFAOYSA-N 2,3-dimethylbut-2-enoic acid;2-ethyl-2-(hydroxymethyl)propane-1,3-diol Chemical group CC(C)=C(C)C(O)=O.CCC(CO)(CO)CO ICFXCSLDPCMWJI-UHFFFAOYSA-N 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- 102000004895 Lipoproteins Human genes 0.000 claims description 3
- 108090001030 Lipoproteins Proteins 0.000 claims description 3
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 claims description 3
- 239000001273 butane Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 3
- CKQVRZJOMJRTOY-UHFFFAOYSA-N octadecanoic acid;propane-1,2,3-triol Chemical compound OCC(O)CO.CCCCCCCCCCCCCCCCCC(O)=O CKQVRZJOMJRTOY-UHFFFAOYSA-N 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical group CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 claims description 3
- 229960002447 thiram Drugs 0.000 claims description 3
- 239000001993 wax Substances 0.000 claims description 3
- 239000011787 zinc oxide Substances 0.000 claims description 3
- SPTHWAJJMLCAQF-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene;hydrogen peroxide Chemical compound OO.CC(C)C1=CC=CC=C1C(C)C SPTHWAJJMLCAQF-UHFFFAOYSA-N 0.000 claims description 2
- DBCAQXHNJOFNGC-UHFFFAOYSA-N 4-bromo-1,1,1-trifluorobutane Chemical compound FC(F)(F)CCCBr DBCAQXHNJOFNGC-UHFFFAOYSA-N 0.000 claims description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 2
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 2
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Substances CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims 1
- 150000001336 alkenes Chemical class 0.000 claims 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims 1
- QVTVDJWJGGEOGX-UHFFFAOYSA-N urea;cyanide Chemical compound N#[C-].NC(N)=O QVTVDJWJGGEOGX-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 239000012229 microporous material Substances 0.000 abstract 2
- 239000002667 nucleating agent Substances 0.000 abstract 1
- 229920013716 polyethylene resin Polymers 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 11
- 238000004064 recycling Methods 0.000 description 6
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 206010000269 abscess Diseases 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 241000219112 Cucumis Species 0.000 description 1
- 235000015510 Cucumis melo subsp melo Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- FJJCIZWZNKZHII-UHFFFAOYSA-N [4,6-bis(cyanoamino)-1,3,5-triazin-2-yl]cyanamide Chemical compound N#CNC1=NC(NC#N)=NC(NC#N)=N1 FJJCIZWZNKZHII-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- LKFAPHHHWRMPGC-UHFFFAOYSA-N butan-1-ol prop-2-enoic acid Chemical compound CCCCO.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C LKFAPHHHWRMPGC-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 125000002769 thiazolinyl group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a non-chemically-crosslinked polyethylene foamed sheet prepared by using a microporous inorganic material as nucleating agent and a preparation method of the polyethylene foamed sheet. The polyethylene foamed sheet is composed of 50-75% of polyethylene resin, 10-30% of microporous inorganic material, 2-7% of foaming-assistant shrinking-resistant agent, 5-15% of foamer, 0.05-0.5% of grafting initiator, 0.05-1.5% of grafting inhibitor and 0.5-5% of polyfunctional group monomer. Uniform distribution in polyethylene is realized by utilizing a microporous adsorption foamer of a microporous material, and content of the microporous material in the components of the sheet has remarkable effect. Another key is that performance of the polyethylene foamed sheet prepared by the method is remarkably improved when compared with that of common polyethylene foamed sheets; by introducing the grafting initiator, the grafting inhibitor and the polyfunctional group monomer, breakage tensile strength and elongation at break are improved obviously, and the polyethylene foamed sheet is dense and uniform in foam.
Description
Technical field
The present invention relates to one kind non-chemically crosslinked polyethylene foamed sheet and preparation method thereof.
Background technology
Polyethylene (PE) as petrochemical industry bulk product, it is with low cost with wide material sources,
The characteristics of being widely used.The polyethylene foam piece produced using polyethylene (PE) and foaming agent is non-crosslinked
Hole-closing structure product, is a kind of packaging material of novel environment friendly also known as EPE pearl wool.It is by low close
The degree polyethylene and low-boiling foaming agent and generation of nucleator Jing plastic extruders physical blowing is countless independently closes
Hole bubble is constituted.Product have moistureproof, shockproof water proof, sound insulation, insulation, plasticity is good, toughness is strong,
Many advantages, such as reconstituted circularly, environmental protection, strong crashworthiness power, also with good chemical resistance.It is tradition
The preferable substitute of shock-resistant packaging material.Especially meet the national industrial policies of plastic product minimizing.Extensively
It is general be applied to automobile cushion, boudoir, electronic apparatus, instrument and meter, computer, sound equipment, medicine equipment,
Industry control cabinet, hardware and lamp decoration, handicraft, glass, ceramics, household electrical appliances, spraying, furniture family property, drinks
And it is the high-grade frangible gift wrap such as resin, hardware, toy, melon and fruit, the inner packing of leather shoes, daily
The packaging of the multiple products such as product, and express delivery packaging.
Stretch due to being currently referred to as the polyethylene foam piece generally existing fracture tensile strength of expanded polyethylene foam, fracture
The poor-performings such as long rate.And some polyethylene foam pieces be using polyethylene through chemical crosslinking foaming,
Although improve the physical and mechanical properties of material, ageing-resistant performance, heat resistance and toughness, its side
Corner material and using it is rear abandonment material be unable to recycling, do not meet the national industrial policies of recycling.
The content of the invention
In in order to overcome prior art the performance such as polyethylene foam piece fracture tensile strength, elongation at break compared with
Poor deficiency, the invention provides a kind of non-chemically crosslinking with containing microporous inorganic material as nucleator gathers
Ethene foamed sheet and preparation method thereof, introduces graft initiator, grafting inhibitor and polyfunctional monomer,
Material energy recycling is abandoned for non-crosslinked product, its leftover pieces and using rear, meets recycling
National industrial policies.Additionally, it is preferred that in embodiment, non-chemically crosslinked polyethylene foamed sheet is also containing micro-
The special inorganic material in hole-- whisker.For example：Calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker
Polyethylene foam piece can be made both to have strengthened and toughness reinforcing, the fracture tensile strength of gained polyethylene foam piece and disconnected
Split the performances such as elongation to be significantly increased.
The present invention solves above-mentioned technical problem and is adopted the technical scheme that：
According to the first aspect of the invention, the present invention provides a kind of non-chemically crosslinked polyethylene foamed sheet, by
Following percentage by weight into being grouped into：Polyvinyl resin 50～75%, containing microporous inorganic material 10～
30%th, help foaming antishrinking agent 2～7%, foaming agent 5～15%, graft initiator 0.05～0.5%,
Grafting inhibitor 0.05～1.5% and polyfunctional monomer 0.5～5%.
Preferably, it is talcum powder, calcium carbonate crystal whisker, calcium sulfate crystal whiskers and carbonization containing microporous inorganic material
The one of which of silicon wafer palpus or two kinds of collaborations are selected.
Preferably, graft initiator is selected from cumyl peroxide and zinc oxide mix, benzoyl peroxide first
At least one in acyl (BPO), di-isopropylbenzene hydroperoxide and dual-tert-butyl cumyl peroxide.
Preferably, it is grafted inhibitor and is selected from thiuram sulfide, bisphenolmonoacryates compound, list
At least one in thiazolinyl class acrylate and styrene monomer.
Preferably, polyfunctional monomer is selected from trimethylol propane trimethyl acrylic acid TMPTMA, triolefin
Propyl group isocyanuric acid ester TAIC, divinylbenzene DVB, Ethylene-glycol-dimethacrylate EGDM and three
At least one in hydroxymethyl-propane triacrylate TMPTA.
Preferably, help foaming antishrinking agent be single stearic acid glycerine lipoprotein, Tissuemat E, OPE,
The one of which of EVA waxes or two kinds of collaborations are selected；Foaming agent be butane, dimethyl ether one or two
Collaboration is selected.
Preferably, by following percentage by weight into being grouped into：Polyvinyl resin 60～68%, containing micro-
Hole inorganic material 15～25%, help foaming antishrinking agent 3～6%, foaming agent 8～12%.Grafting causes
Agent 0.1～0.3%, grafting inhibitor 0.1～1.2% and polyfunctional monomer 1～3%.
Preferably, by following percentage by weight into being grouped into：Polyvinyl resin 64%, containing micropore without
Machine material 20%, help foaming antishrinking agent 4%, foaming agent 10%, graft initiator 0.2%, grafting
Inhibitor 0.2%, polyfunctional monomer 2%.
According to the second aspect of the invention, the present invention provides a kind of non-chemically crosslinked polyethylene foamed sheet and prepares
Method, including the following steps for carrying out in order：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material and help foaming antishrinking agent exist
It is blended 15～30 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained extrudes at 140～160 DEG C,
Pelletizing obtains pellet for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 15～30 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extrusion unit of two series connection, by being total to that (3) step obtains
Mixed thing adds extruder to be heated to 140～160 DEG C, separately notes foaming agent injection pump from extruder foaming agent
Entrance injects, and extrusion obtains polyethylene foam piece.
Preferably, non-chemically crosslinked polyethylene foaming piece preparation method, including the following step for carrying out in order
Suddenly：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material, help foaming antishrinking agent exist
It is blended 20 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained is extruded at 150 DEG C, pelletizing
Pellet is obtained for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 25 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extruder of two series connection, the blending that (3) step is obtained
Thing adds extruder to be heated to 150 DEG C, separately notes foaming agent injection pump from extruder blowing agent injection port
Enter, extrusion obtains polyethylene foam piece.
The innovation effect of the present invention：Present invention introduces a kind of special inorganic material containing micropore-- whisker.
For example：Calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker, it can be such that polyethylene foam piece both strengthened
And toughness reinforcing.Its leftover pieces and using it is rear abandon material can recycling, meet the state of recycling
Family's industrial policy.The characteristics of present invention fully combines component material performance and production technology and innovates, passes through
A kind of non-chemically crosslinked polyethylene foamed sheet with containing microporous inorganic material as nucleator of the present invention
The polyethylene foam piece performance that preparation method is produced is compared common polythene foamed sheet and is significantly increased, together
When introduce graft initiator, grafting inhibitor and polyfunctional monomer so that the Materials Fracture stretching of product
The performances such as intensity, elongation at break are significantly improved, and gained polyethylene foam piece abscess is fine and closely woven uniform.
Specific embodiment
Below to a preferred embodiment of the present invention will be described in detail.
The present invention provides a kind of non-chemically crosslinked polyethylene foamed sheet, by following percentage by weight into packet
Into：Polyvinyl resin 50～75%, containing microporous inorganic material 10～30%, help foaming antishrinking agent 2～
7%th, foaming agent 5～15%, graft initiator 0.05～0.5%, grafting inhibitor 0.05～1.5% and many
Monomer 0.5～5%.The embodiment of the present invention also provides one kind and selects excellent principle：There is provided a kind of to contain
Microporous inorganic material is the preferred model of component of the non-chemically crosslinked polyethylene foamed sheet percentage by weight of nucleator
Enclose：Polyvinyl resin 60～68%, containing microporous inorganic material 15～25%, help foaming antishrinking agent 3～
6%th, foaming agent 8～12%, graft initiator 0.1～0.3%, grafting inhibitor 0.1～1.2%, many
Monomer 1～3%.There is provided a kind of non-chemically crosslinking with containing microporous inorganic material as nucleator to gather
The component optimum median of ethene foamed sheet percentage by weight：Polyvinyl resin 64%, contain microporous inorganic
Material 20%, help foaming antishrinking agent 4%, foaming agent 10%, graft initiator 0.2%, grafting suppression
Preparation 0.2%, polyfunctional monomer 2%.
The preparation method of above-mentioned non-chemically crosslinked polyethylene foamed sheet is：Including the following step for carrying out in order
Suddenly：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material and help foaming antishrinking agent exist
It is blended 15～30 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained extrudes at 140～160 DEG C,
Pelletizing obtains pellet for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 15～30 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extrusion unit of two series connection, by being total to that (3) step obtains
Mixed thing adds extruder to be heated to 140～160 DEG C, separately notes foaming agent injection pump from extruder foaming agent
Entrance injects, and extrusion obtains polyethylene foam piece.
The preparation method of optimum principle is：Including the following steps for carrying out in order：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material, help foaming antishrinking agent exist
It is blended 20 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained is extruded at 150 DEG C, pelletizing
Pellet is obtained for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 25 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extruder of two series connection, the blending that (3) step is obtained
Thing adds extruder to be heated to 150 DEG C, separately notes foaming agent injection pump from extruder blowing agent injection port
Enter, extrusion obtains polyethylene foam piece.
Embodiment 1
The embodiment of the present invention 1 provides a kind of non-chemically crosslinking with containing microporous inorganic material as nucleator and gathers
Ethene foamed sheet, by following percentage by weight into being grouped into：Polyvinyl resin 64%, containing micropore without
Machine material 20%, help foaming antishrinking agent 4%, foaming agent 10%, graft initiator 0.2%, grafting
Inhibitor 0.2%, polyfunctional monomer 2%.
Wherein, the melt index of the polyvinyl resin be per 10 minutes 1.5 grams.Melt index detection mark
Standard is ASTM D 1238.
It is described containing microporous inorganic material be talcum powder, calcium carbonate crystal whisker one or two collaboration select.
It is described to help foaming antishrinking agent to be single stearic acid glycerine lipoprotein, the one of which of EVA waxes or two kinds of associations
With selection.
The foaming agent is one or two collaboration selections of butane, dimethyl ether.
The graft initiator is selected from cumyl peroxide and zinc oxide mix and benzoyl peroxide
(BPO) one of which.
The grafting inhibitor is selected from wherein the one of thiuram sulfide and bisphenolmonoacryates compound
Kind.
The polyfunctional monomer is selected from trimethylol propane trimethyl acrylic acid TMPTMA and three allyls
The one of which of base isocyanuric acid ester TAIC.
A kind of system of above-mentioned non-chemically crosslinked polyethylene foamed sheet with containing microporous inorganic material as nucleator
Preparation Method, including the following steps for carrying out in order：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material, help foaming antishrinking agent exist
It is blended 20 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained is extruded at 150 DEG C, pelletizing
Pellet is obtained for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 20 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extrusion unit of two series connection, by being total to that (3) step obtains
Mixed thing adds extruder to be heated to 150 DEG C, separately by foaming agent injection pump from extruder blowing agent injection port
Injection, extrusion obtains polyethylene foam piece.
Embodiment 2
Except containing microporous inorganic material be 15%, polyvinyl resin content be 68%, in addition to foaming agent 8%,
Other are same as Example 1.
Embodiment 3
Except containing microporous inorganic material be 25%, polyvinyl resin content be 58%, in addition to foaming agent 12%,
Other are same as Example 1.
The polyethylene foam piece performance table of embodiment 1～3
| Polyethylene foam piece performance | Embodiment 2 | Embodiment 1 | Embodiment 3 |
| Poromerics consumption (%) | 15 | 20 | 25 |
| Density (g ╱ cm3) | 0.024 | 0.018 | 0.015 |
| Abscess average diameter (μm) | 3.12 | 2.34 | 1.87 |
| Fracture tensile strength (MPa) | 8.16 | 8.42 | 8.64 |
| Elongation at break (%) | 170 | 175 | 181 |
By the result of implementation of embodiment 1 to 3, its gained is a kind of to contain microporous inorganic material as nucleation
The performances such as Materials Fracture tensile strength, the elongation at break of non-chemically crosslinked polyethylene foaming flake products of agent
It is significantly improved with the increase containing microporous inorganic material addition, and gained polyethylene foam piece abscess is thin
Close degree and uniform in foaming degree are significantly improved.
Claims (10)
1. one kind non-chemically crosslinked polyethylene foamed sheet, it is characterised in that by following percentage by weight into
It is grouped into：Polyvinyl resin 50～75%, containing microporous inorganic material 10～30%, help foaming anti-shrink
Agent 2～7%, foaming agent 5～15%, graft initiator 0.05～0.5%, grafting inhibitor 0.05～1.5%
And polyfunctional monomer 0.5～5%.
2. a kind of non-chemically crosslinked polyethylene foamed sheet according to claim 1, it is characterised in that：
Described is talcum powder, calcium carbonate crystal whisker, calcium sulfate crystal whiskers and silicon carbide whisker containing microporous inorganic material
One of which or two kinds of collaborations are selected.
3. a kind of non-chemically crosslinked polyethylene foamed sheet according to claim 1, it is characterised in that：
The graft initiator selected from cumyl peroxide and zinc oxide mix, benzoyl peroxide (BPO),
At least one in di-isopropylbenzene hydroperoxide and dual-tert-butyl cumyl peroxide.
4. a kind of non-chemically crosslinked polyethylene foamed sheet according to claim 1, it is characterised in that：
The grafting inhibitor is selected from thiuram sulfide, bisphenolmonoacryates compound, monoenyl third
At least one in olefin(e) acid ester and styrene monomer.
5. a kind of non-chemically crosslinked polyethylene foamed sheet according to claim 1, it is characterised in that：
The polyfunctional monomer is selected from trimethylol propane trimethyl acrylic acid TMPTMA, triallyl isocyanide
Urea acid esters TAIC, divinylbenzene DVB, Ethylene-glycol-dimethacrylate EGDM and trihydroxy methyl third
At least one in alkane triacrylate TMPTA.
6., according to the arbitrary described one kind of claim 1-5 non-chemically crosslinked polyethylene foamed sheet, it is special
Levy and be：
It is described to help foaming antishrinking agent to be single stearic acid glycerine lipoprotein, Tissuemat E, OPE, E
The one of which of VA waxes or two kinds of collaborations are selected；
The foaming agent is one or two collaboration selections of butane, dimethyl ether.
7. according to a kind of arbitrary non-chemically crosslinked polyethylene foamed sheet of right 1-5, it is characterised in that
By following percentage by weight into being grouped into：Polyvinyl resin 60～68%, containing microporous inorganic material
15～25%, foaming antishrinking agent 3～6%, foaming agent 8～12% are helped.Graft initiator 0.1～0.3%,
Grafting inhibitor 0.1～1.2% and polyfunctional monomer 1～3%.
8. according to a kind of arbitrary non-chemically crosslinked polyethylene foamed sheet of right 1-5, it is characterised in that
By following percentage by weight into being grouped into：Polyvinyl resin 64%, containing microporous inorganic material 20%,
Help foaming antishrinking agent 4%, foaming agent 10%, graft initiator 0.2%, grafting inhibitor 0.2%,
Polyfunctional monomer 2%.
9. one kind non-chemically crosslinked polyethylene foaming piece preparation method, it is characterised in that including entering in order
Capable following steps：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material and help foaming antishrinking agent exist
It is blended 15～30 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained extrudes at 140～160 DEG C,
Pelletizing obtains pellet for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 15～30 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extrusion unit of two series connection, by being total to that (3) step obtains
Mixed thing adds extruder to be heated to 140～160 DEG C, separately notes foaming agent injection pump from extruder foaming agent
Entrance injects, and extrusion obtains polyethylene foam piece.
10. a kind of non-chemically crosslinked polyethylene foaming piece preparation method according to claim 9, its
It is characterised by, including the following steps for carrying out in order：
Step is (1)：By a certain proportion of polyethylene, containing microporous inorganic material, help foaming antishrinking agent exist
It is blended 20 minutes under normal temperature in blender；
Step is (2)：The blend double screw extruder that (1) step is obtained is extruded at 150 DEG C, pelletizing
Pellet is obtained for functional master batch；
Step is (3)：Functional master batch that (2) step is obtained, graft initiator, grafting inhibitor with it is multifunctional
Single group body is blended in a mixer 25 minutes with polyethylene raw material by a certain percentage；
Step is (4)：The blend that (3) step is obtained is with foaming agent injection pump and blowing agent injection port
Extrusion operation is carried out in separate unit screw extruder or the extruder of two series connection, the blending that (3) step is obtained
Thing adds extruder to be heated to 150 DEG C, separately notes foaming agent injection pump from extruder blowing agent injection port
Enter, extrusion obtains polyethylene foam piece.
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