CN105754199B - A kind of high viscosity high resistance to stress cracking behavior polyethylene powders - Google Patents
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders Download PDFInfo
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- CN105754199B CN105754199B CN201610128938.0A CN201610128938A CN105754199B CN 105754199 B CN105754199 B CN 105754199B CN 201610128938 A CN201610128938 A CN 201610128938A CN 105754199 B CN105754199 B CN 105754199B
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- high resistance
- cracking behavior
- high viscosity
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- 239000004698 Polyethylene Substances 0.000 title claims abstract description 66
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 66
- -1 polyethylene Polymers 0.000 title claims abstract description 56
- 238000005336 cracking Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 title claims abstract description 31
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 35
- 229920001721 polyimide Polymers 0.000 claims abstract description 23
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 claims abstract description 17
- 239000009719 polyimide resin Substances 0.000 claims abstract description 17
- 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 abstract description 13
- 239000000463 material Substances 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000005453 pelletization Methods 0.000 claims description 13
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 125000004434 sulfur atom Chemical group 0.000 claims description 12
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 11
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
- HGTUJZTUQFXBIH-UHFFFAOYSA-N (2,3-dimethyl-3-phenylbutan-2-yl)benzene Chemical compound C=1C=CC=CC=1C(C)(C)C(C)(C)C1=CC=CC=C1 HGTUJZTUQFXBIH-UHFFFAOYSA-N 0.000 claims description 9
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000000155 melt Substances 0.000 claims description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical group CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 7
- 239000004642 Polyimide Substances 0.000 claims description 7
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 7
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 229920001684 low density polyethylene Polymers 0.000 claims description 6
- 239000004702 low-density polyethylene Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000012644 addition polymerization Methods 0.000 claims description 3
- WFKAJVHLWXSISD-UHFFFAOYSA-N isobutyramide Chemical compound CC(C)C(N)=O WFKAJVHLWXSISD-UHFFFAOYSA-N 0.000 claims description 3
- 230000007306 turnover Effects 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 150000003949 imides Chemical class 0.000 claims 1
- JFNLZVQOOSMTJK-KNVOCYPGSA-N norbornene Chemical compound C1[C@@H]2CC[C@H]1C=C2 JFNLZVQOOSMTJK-KNVOCYPGSA-N 0.000 claims 1
- 230000035882 stress Effects 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 8
- 230000006353 environmental stress Effects 0.000 abstract description 8
- 238000001175 rotational moulding Methods 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 description 7
- OKIRBHVFJGXOIS-UHFFFAOYSA-N 1,2-di(propan-2-yl)benzene Chemical compound CC(C)C1=CC=CC=C1C(C)C OKIRBHVFJGXOIS-UHFFFAOYSA-N 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000002978 peroxides Chemical class 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 210000003298 dental enamel Anatomy 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 1
- 101100043629 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) SSY1 gene Proteins 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002320 enamel (paints) Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229920002681 hypalon Polymers 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0869—Acids or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
- C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
-
- 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
-
- 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
-
- 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
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- 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)
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of high viscosity high resistance to stress cracking behavior polyethylene powders, it is mixed by the component of following mass percent meter：Polyethylene 24.995 89.4995%, ethylene acrylic acid co polymer 5 40% are bonded master batch 5 30%, polyimide resin 0.5% 5%, cumyl peroxide 0.0005% 0.005%.Plastic-spraying or rotational molding technique can be used to process for this composite material of the present invention, while composite material possesses more preferable adhesion strength, and more preferable environmental stress crack resistance.
Description
Technical field
The present invention relates to a kind of composite polyethylene material, more particularly to a kind of high viscosity high resistance to stress cracking behavior polyethylene powder
End.
Background technology
Standard GB/T 4351《Hand fire extinguisher》And GB8109《Transportable fire extinguisher》All define aqua type fire extinguishing
Device must carry out internal anti-corrosion protection.The simplified inner wall anti-corrosive of domestic water base extinguisher (foam, light-water, MJPZ fire extinguisher etc.)
Research is started late, and method is simple.Once trial at the beginning of the end of the nineties in last century to age carries out the simplified inner wall of fire extinguisher with enamel and prevents
Corrosion treatment, since enamel cannot bear mechanical impact force, there are frangible, enamel coating in processing, handling process for fire extinguisher
The deficiencies of easily rupturable, use the composite coating of epoxy resin, chlorosulfonated polyethylene, F84 types finishing coat and F84728 types priming paint composition instead
The coating such as closing and carry out inner wall anti-corrosive, coating is not easy dry solidification in the simplified nearly totally enclosed environment of fire extinguisher, and due to general
Logical coating process is difficult to obtain good reliable coating, and simplified inner wall pre-treatment is unqualified etc., and coating is difficult to matrix adhesive force
Ensure, examined with 8 temperature cycle test methods required by ISO/DIS7165E coating easily occur and be cracked, come off etc. to show
As.
Polyvinyl resin due to its good toughness, corrosion resistance and economy, is prevented for the inside of fire extinguisher tank
The good material of corruption protection, but since polyethylene is non-polar plastic, and fire extinguisher tank cannot combine, under conventional operating mode,
Easily formed and peel off, crack, cause parts scrap, which has limited its application in fire extinguisher inside lining anti-corrosive field.Publication No.
The Chinese invention of CN101148525A discloses a kind of composite polyethylene material, but the material that the invention provides is to be exclusively used in wrapping
Package material, it is desirable to which it is scattered easy that material has, and the tension intensity of material is high, elongation at break height and the high spy of tearing strength
Point, is not particularly suited for fire extinguisher or metallic conduit inside lining anti-corrosive uses.
The product that inventor formerly develops can meet the general requirement of fire extinguisher product, but occur in use
Following problem：When fire extinguisher tank surface treatment is not in place, inner plastic layer is easy to fall off, causes product disqualification rate liter
It is high.It is 10 years to have part customer requirement shelf life of products, and product stress cracking occurs when storing 5-6 and shows in the technical solution
As.
The content of the invention
It is an object of the invention to provide a kind of high viscosity high resistance to stress cracking behavior polyethylene powders, this composite material can
Processed using plastic-spraying and rotational molding technique, while composite material possesses more preferable adhesion strength, and more preferable resisting environmental stress and cracking
Property.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
Polyethylene 24.995-89.4995%, ethylene acrylic acid co polymer 5-40%, are bonded master batch 5-30%, polyimide resin
0.5%-5%, cumyl peroxide 0.0005%-0.005%.
Preferably, high viscosity high resistance to stress cracking behavior polyethylene powders mix system by the component of following mass percent meter
Into：Polyethylene 24.995%-89.4995%, ethylene acrylic acid co polymer 5-40%, are bonded master batch 15%-22%, polyimides
Resin 0.5%-5%, cumyl peroxide 0.0005%-0.005%.
Inventor has found in further research, and in the presence of micro peroxide, polyimides and bonding are female
Grain generates good synergistic effect so that the adhesion of material and metal significantly strengthens, and the dosage that master batch is bonded in material can
Significantly less (decrement is in 30%-40%), simultaneously because the introducing of cumyl peroxide, when products application, is not influencing to flow
On the premise of dynamic property, the environmental stress cracking resistance of material greatly improved.
Preferably, the polyethylene is one or two kinds of in LDPE, LLDPE, the melt flow rate (MFR) of polyethylene
(190 DEG C, 2.16kg) are 2-22g/10min, and are free of opening agent.
It can cause to decline with the caking property of metal containing opening agent, therefore control in polyethylene and be free of opening agent.
Preferably, the acrylic acid content in the ethylene acrylic acid co polymer is more than 20%.Second used in the present invention
Alkene acrylic copolymer is to buy direct use, the EAA5050 of typical model such as Mobil Corporation from manufacturer.Ethylene acrylic
The adding proportion of copolymer is preferably in a proportion of 20-30% between 5%-40%.
Preferably, the melt turnover (190 DEG C, 2.16kg) of bonding master batch is 2-50g/10min.Manufacturing process can draw
Act the change for the melt flow rate (MFR) for bonding master batch, the melt flow rate (MFR) of material polyethylene and the melt flows speed for bonding master batch
Rate cannot be reciprocity, therefore the melt turnover for limiting bonding master batch is more particularly suitable.
Preferably, the bonding master batch is mixed by the component of following mass percent meter：Polyethylene 95-
99.45%, maleic anhydride or acrylic acid 0.05%-3%, 2,3- dimethyl -2,3- diphenyl butane 0.5%-2%, containing N, P, S
The electron donor compound 0.1%-3% of atom.
The melt flow rate (MFR) for the polyethylene selected in bonding master batch is more than 50g/10min, the typical trade mark such as LDPE
MG70, other components are commercially available reagent.
By the present invention in that with high fluidity LLDPE or LDPE, the electron donor compound containing N, P, S atom is added,
New initiator 2, under the action of 3- dimethyl -2,3- diphenyl butanes, produces the bonding master batch for possessing high-adhesion.
It is bonded in the raw material of master batch and with the addition of the electron donor compound containing N, P, S atom, this gives containing N, P, S atom
The addition of electron compound so that the adhesion strength of bonding master batch and material significantly improves.
Preferably, the electron donor compound containing N, P, S atom is dimethylformamide, in dimethylacetylamide
One or two kinds of mixture.It is the electron containing N, P, S atom to select these dimethylformamides, dimethylacetylamide
Body bonding compound performance enhancement effect is good.
Preferably, the polyimide resin is addition polymerization polyimide type resin, selected from polybismaleimide, drop ice
One or two kinds of mixture in piece alkenyl capped polyimides resin.
Polyimide resin is defined to above-mentioned particular kind of addition polymerization polyimide type resin, in the presence of peroxide
Under, this kind of polyimide resin easily reacts.
Preferably, its particle diameter distribution of high viscosity high resistance to stress cracking behavior polyethylene powders D98≤ 0.250mm, D50
≤0.150mm。
A kind of preparation method of high viscosity high resistance to stress cracking behavior polyethylene powders, comprises the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes, contain
N, after P, the electron donor compound of S atom mix 2-3min on high mixer in proportion, melted altogether by double screw extruder
Mixed, bonding master batch is made in extruding pelletization, and procession parameters are：Melt temperature is 180-220 DEG C, screw speed 100-
200rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 160-230 DEG C, screw speed 100-500rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature≤70 DEG C, mill
Dish gap≤0.2mm, speed of grinding plate >=3000rpm.
The beneficial effects of the invention are as follows：
1st, material possesses more preferable adhesion strength, and more preferable environmental stress crack resistance.
2nd, material of the invention can be used for preparing corrosion protective lining inside fire extinguisher tank, may also be used for preparing metal tube
Road or inside pipe fitting corrosion protective lining, material of the invention is suitable for plastic-spraying and rotational molding technique, while is also suitable for polyethylene powder
Other techniques of processing, such as leaching modeling, roller coating.
Embodiment
Below by specific embodiment, technical scheme is described in further detail.
In the present invention, if not refering in particular to, used raw material and equipment etc. are commercially available or commonly used in the art.
Method in following embodiments, is the conventional method of this area unless otherwise instructed.
Polyethylene used in the present invention is to buy direct use from manufacturer, and typical model is as Zhenghai refinery produces
LLDPE8320 powders.
High mixer, SHR10 types, the production of chigo machinery plant of Zhangjagang City,
In mix machine, E150 types, Guangdong produces with abundant plastics machinery Co., Ltd,
Double screw extruder, TE65 types, the production of Nanjing Cheng Meng mechanical equipments Co., Ltd,
Plastic grinder, T550 types, the production of Shanghai Gaoqiao Cryo Equipment factory.
Embodiment 1：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
Polyethylene (LDPE) 24.995%, ethylene acrylic acid co polymer 40%, is bonded master batch 30%, polyimide resin 5%, peroxidating
Diisopropylbenzene (DIPB) 0.005%.
Preparation method comprises the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes, contain
N, after P, the electron donor compound of S atom mix 2-3min on high mixer in proportion, melted altogether by double screw extruder
Mixed, bonding master batch is made in extruding pelletization, and procession parameters are：Melt temperature is 180 DEG C, screw speed 100rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 160 DEG C, screw speed 100rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is 65 DEG C of mill temperature, mill
Gap 0.16mm, speed of grinding plate 3200rpm.
Embodiment 2：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
(LDPE and LLDPE is according to 1 for polyethylene：1 quality is than mixture) 89.4995%, ethylene acrylic acid co polymer 5%, bonding mother
Grain 5%, polyimide resin 0.5%, cumyl peroxide 0.0005%.
Preparation method comprises the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes, contain
N, after P, the electron donor compound of S atom mix 2-3min on high mixer in proportion, melted altogether by double screw extruder
Mixed, bonding master batch is made in extruding pelletization, and procession parameters are：Melt temperature is 220 DEG C, screw speed 200rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 230 DEG C, screw speed 500rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature 70 C, mill
Gap 0.2mm, speed of grinding plate 3000rpm.
Embodiment 3：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
Polyethylene (LLDPE) 67.998%, ethylene acrylic acid co polymer 20%, is bonded master batch 10%, polyimide resin 2%, peroxide
Change diisopropylbenzene (DIPB) 0.002%.
Preparation method comprises the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes, contain
N, after P, the electron donor compound of S atom mix 2-3min on high mixer in proportion, melted altogether by double screw extruder
Mixed, bonding master batch is made in extruding pelletization, and procession parameters are：Melt temperature is 200 DEG C, screw speed 150rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 200 DEG C, screw speed 300rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature 70 C, mill
Gap 0.2mm, speed of grinding plate 3000rpm.
Comparative example 1：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
Polyethylene (LLDPE) 67.998%, ethylene acrylic acid co polymer 20%, is bonded master batch 10%, polyimide resin 2%, peroxide
Change diisopropylbenzene (DIPB) 0.002%.
Preparation method comprises the following steps：
A. master batch is bonded to prepare：Polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes are pressed
After ratio mixes 2-3min on high mixer, by double screw extruder melt blending, bonding master batch is made in extruding pelletization, extrusion
Technological parameter is：Melt temperature is 200 DEG C, screw speed 150rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 200 DEG C, screw speed 300rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature 70 C, mill
Gap 0.2mm, speed of grinding plate 3000rpm.
Comparative example 2：
A kind of high viscosity high resistance to stress cracking behavior polyethylene powders, are mixed by the component of following mass percent meter：
Polyethylene (LLDPE) 70%, ethylene acrylic acid co polymer 20%, is bonded master batch 10%.Preparation method comprises the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butanes, contain
N, after P, the electron donor compound of S atom mix 2-3min on high mixer in proportion, melted altogether by double screw extruder
Mixed, bonding master batch is made in extruding pelletization, and procession parameters are：Melt temperature is 200 DEG C, screw speed 150rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：Polyethylene, ethylene acrylic acid co polymer, bonding is female
After grain, polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Melt blending, extruding pelletization, procession parameters are：Melt temperature is 200 DEG C, screw speed 300rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature 70 C, mill
Gap 0.2mm, speed of grinding plate 3000rpm.
Material property detection prepared by the embodiment of the present invention and comparative example is as follows：
| Sequence number | Environmental stress crack resistance h | 180 ° of peel strength N/cm |
| Embodiment 1 | 544 | 104 |
| Embodiment 2 | 172 | 38 |
| Embodiment 3 | 301 | 55 |
| Comparative example 1 | 298 | 34 |
| Comparative example 2 | 37 | 29 |
Environmental stress crack resistance is according to GB1842-2008《Plastic polyethylene Environmental Stress Cracking test method》Surveyed
Examination, 180 ° of peel strengths are according to GB2790-1995《180 ° of peeling strength test methods of adhesive》Tested.
The present invention composite polyethylene material possess good environmental stress crack resistance and cohesive force, can be adapted to plastic-spraying or
Rotational molding technique, using in metallic conduit, tank body corrosion protective lining (such as fire extinguisher tank), effectively improves fire extinguisher tank
Quality.
Embodiment described above is a kind of preferable scheme of the present invention, and not the present invention is made in any form
Limitation, also has other variations and remodeling on the premise of without departing from the technical solution described in claim.
Claims (7)
1. a kind of high viscosity high resistance to stress cracking behavior polyethylene powders, it is characterised in that by the component of following mass percent meter
It is mixed：Polyethylene 24.995%-89.4995%, ethylene acrylic acid co polymer 5-40%, are bonded master batch 5%-30%, gather
Imide resin 0.5%-5%, cumyl peroxide 0.0005%-0.005%；
The bonding master batch is mixed by the component of following mass percent meter：Polyethylene 92%-99.35%, maleic anhydride
Or acrylic acid 0.05%-3%, 2,3- dimethyl -2,3- diphenyl butane 0.5%-2%, the electron donor containing N, P, S atom
Compound 0.1%-3%；The electron donor compound containing N, P, S atom is dimethylformamide, in dimethylacetylamide
One or two kinds of mixture.
A kind of 2. high viscosity high resistance to stress cracking behavior polyethylene powders according to claim 1, it is characterised in that：Content is
The polyethylene of 24.995%-89.4995% is one or two kinds of in LDPE, LLDPE, its melt flow rate (MFR) is 2-
22g/10min, and be free of opening agent.
A kind of 3. high viscosity high resistance to stress cracking behavior polyethylene powders according to claim 1 or 2, it is characterised in that：Institute
The acrylic acid content stated in ethylene acrylic acid co polymer is more than 20%.
A kind of 4. high viscosity high resistance to stress cracking behavior polyethylene powders according to claim 1 or 2, it is characterised in that：It is viscous
The melt turnover for connecing master batch is 2-50g/10min.
A kind of 5. high viscosity high resistance to stress cracking behavior polyethylene powders according to claim 1, it is characterised in that：It is described poly-
Imide resin is addition polymerization polyimide type resin, selected from polybismaleimide, norbornene capped polyimides resin
In one or two kinds of mixture.
A kind of 6. high viscosity high resistance to stress cracking behavior polyethylene powders according to claim 1, it is characterised in that：The height
Its particle diameter distribution of sticky high resistance to stress cracking behavior polyethylene powders D98≤0.250mm, D50≤0.150mm.
7. a kind of preparation method of high viscosity high resistance to stress cracking behavior polyethylene powders as claimed in claim 1, its feature exist
In comprising the following steps：
A. master batch is bonded to prepare：By polyethylene, maleic anhydride or acrylic acid, 2,3- dimethyl -2,3- diphenyl butane, containing N, P,
After the electron donor compound of S atom mixes 2-3min on high mixer in proportion, by double screw extruder melt blending, squeeze
Go out granulation and bonding master batch is made, procession parameters are：Melt temperature is 180-220 DEG C, screw speed 100-200rpm；
B. prepared by high viscosity high resistance to stress cracking behavior polyethylene powders：By polyethylene, ethylene acrylic acid co polymer, bonding master batch,
After polyimide resin, cumyl peroxide mix 2-3min on mixed machine in proportion, melted by double screw extruder
Blending, extruding pelletization, procession parameters are：Melt temperature is 160-230 DEG C, screw speed 100-500rpm；
C. the step b materials being granulated are ground by plastic grinder, grinding technics is mill temperature≤70 DEG C, between mill
Gap≤0.2mm, speed of grinding plate >=3000rpm.
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| CN101928424A (en) * | 2010-08-05 | 2010-12-29 | 温原 | Polyethylene composite material, preparation method and use thereof |
| CN105237853A (en) * | 2015-10-29 | 2016-01-13 | 山东融汇管通股份有限公司 | Cracking resistance modified polyethylene material and preparation method therefor |
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| CN101928424A (en) * | 2010-08-05 | 2010-12-29 | 温原 | Polyethylene composite material, preparation method and use thereof |
| CN105237853A (en) * | 2015-10-29 | 2016-01-13 | 山东融汇管通股份有限公司 | Cracking resistance modified polyethylene material and preparation method therefor |
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Denomination of invention: A kind of polyethylene powder with high viscosity and high resistance to stress cracking Effective date of registration: 20221129 Granted publication date: 20180427 Pledgee: China Construction Bank Corporation Cixi sub branch Pledgor: ZHEJIANG ROTOUN PLASTIC TECHNOLOGY Co.,Ltd. Registration number: Y2022330003313 |
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Address after: 315323 588 Industrial Avenue, Shengshan Town, Cixi City, Ningbo City, Zhejiang Province Patentee after: ZHEJIANG ROTOUN PLASTIC TECHNOLOGY Co.,Ltd. Address before: 315323 588 Industrial Avenue, Shengshan Town, Cixi City, Ningbo City, Zhejiang Province Patentee before: ZHEJIANG ROTOUN PLASTIC TECHNOLOGY Co.,Ltd. |
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