CN111763425A - High-wear-resistance resin and preparation method thereof - Google Patents
High-wear-resistance resin and preparation method thereof Download PDFInfo
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- CN111763425A CN111763425A CN202010663768.2A CN202010663768A CN111763425A CN 111763425 A CN111763425 A CN 111763425A CN 202010663768 A CN202010663768 A CN 202010663768A CN 111763425 A CN111763425 A CN 111763425A
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- 239000011347 resin Substances 0.000 title claims abstract description 73
- 229920005989 resin Polymers 0.000 title claims abstract description 73
- 238000002360 preparation method Methods 0.000 title abstract description 12
- -1 polyethylene Polymers 0.000 claims abstract description 95
- 239000004698 Polyethylene Substances 0.000 claims abstract description 94
- 229920000573 polyethylene Polymers 0.000 claims abstract description 93
- 239000000843 powder Substances 0.000 claims abstract description 86
- 239000011159 matrix material Substances 0.000 claims abstract description 33
- 229920003023 plastic Polymers 0.000 claims abstract description 12
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 42
- 238000005299 abrasion Methods 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 25
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 claims description 10
- 239000012495 reaction gas Substances 0.000 claims description 9
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000004048 modification Effects 0.000 claims description 7
- 238000012986 modification Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 5
- QKCGXXHCELUCKW-UHFFFAOYSA-N n-[4-[4-(dinaphthalen-2-ylamino)phenyl]phenyl]-n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(N(C=3C=CC(=CC=3)C=3C=CC(=CC=3)N(C=3C=C4C=CC=CC4=CC=3)C=3C=C4C=CC=CC4=CC=3)C3=CC4=CC=CC=C4C=C3)=CC=C21 QKCGXXHCELUCKW-UHFFFAOYSA-N 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 4
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 4
- 229910018503 SF6 Inorganic materials 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- FBBDOOHMGLLEGJ-UHFFFAOYSA-N methane;hydrochloride Chemical compound C.Cl FBBDOOHMGLLEGJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 31
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 14
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 14
- 239000000654 additive Substances 0.000 description 13
- 239000004743 Polypropylene Substances 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 11
- 238000001035 drying Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- 239000000498 cooling water Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 6
- 239000004417 polycarbonate Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 239000004709 Chlorinated polyethylene Substances 0.000 description 4
- 239000004793 Polystyrene Substances 0.000 description 4
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 4
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 239000012994 photoredox catalyst Substances 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 229920006324 polyoxymethylene Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920006235 chlorinated polyethylene elastomer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910014033 C-OH Inorganic materials 0.000 description 1
- 125000006414 CCl Chemical group ClC* 0.000 description 1
- 229910014570 C—OH Inorganic materials 0.000 description 1
- 241000277275 Oncorhynchus mykiss Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000036470 plasma concentration Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000001550 time 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
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/18—Introducing halogen atoms or halogen-containing groups
- C08F8/20—Halogenation
-
- 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
- C08F8/00—Chemical modification by after-treatment
- C08F8/30—Introducing nitrogen atoms or nitrogen-containing groups
-
- 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
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- 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
- C08L2207/04—Thermoplastic elastomer
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
The invention provides a high-wear-resistance resin and a preparation method thereof, wherein the wear-resistance resin comprises, by weight, 100 parts of a resin matrix and 0.1-40 parts of modified polyethylene powder; wherein the surface of the modified polyethylene powder is coated with-NH2One or more of-OH, -Cl or-F. The wear-resistant plastic has the advantages ofLong-term aging wear resistance and better bonding property.
Description
Technical Field
The invention relates to a high-wear-resistance resin.
Background
The wear resistance of a polymer material is generally expressed by the wear rate or the inverse of the wear degree under a specified friction condition. In the field of production and application, high-molecular materials need higher wear resistance to reduce wear during use, thereby improving service life.
The mode of adding wear-resistant additives is usually adopted to improve the wear resistance of the high polymer material, the wear-resistant additives comprise liquid silicone, PTFE (polytetrafluoroethylene), molybdenum disulfide and the like, and the wear-resistant additives, namely powder or liquid, can migrate to the surface of the high polymer base material, so that the surface friction coefficient of the high polymer material is reduced, and the wear resistance is improved. The improvement of the abrasion resistance of the polymer material by the above method has the following two problems: 1) the wear-resistant additive material gradually migrates to the surface of the polymer matrix material, and in the use process, the material has low surface friction coefficient and can show better wear resistance, but after a period of use, the surface layer is damaged, the base material with low content of the wear-resistant material is exposed, and the wear resistance is weakened; 2) these wear-resistant additives have poor hydrophilicity and can reduce the adhesion properties of polymeric materials, for example, TPU-encapsulated rubber rollers are used in some industries, and the addition of these materials to TPU can affect the adhesion with metal roller cores.
Therefore, the development of the wear-resistant resin with long-term aging has very important significance.
Disclosure of Invention
The wear-resistant resin has the advantages that the wear-resistant performance of the wear-resistant resin is not influenced by the surface wear, the wear-resistant performance has long time effect, and the service life is longer; furthermore, the added wear-resistant component has better hydrophilic property, so that the adhesive property of the wear-resistant resin is high.
The method for preparing the abrasion-resistant resin can stably produce the abrasion-resistant resin.
On one hand, the invention provides a high-wear-resistance resin which comprises the following components in parts by weight:
a resin matrix 100;
0.1-40 parts of modified polyethylene powder;
wherein the surface of the modified polyethylene powder is coated with-NH2One or more of-OH, -Cl or-F.
According to the high-wear-resistance resin, the diameter of the modified polyethylene powder is preferably 10-250 μm; wherein the polyethylene has an average molecular weight of 200 to 1000 ten thousand.
According to the high wear-resistant resin of the present invention, preferably, the resin matrix is selected from one or more of PS, ABS, PA, PP, PC, POM, CPE or TPU.
According to the high wear-resistant resin of the present invention, preferably, the resin matrix is selected from one or more of PA, PP or TPU.
According to the high wear-resistant resin, preferably, the wear-resistant resin comprises the following components in parts by weight:
a resin matrix 100;
1-20 parts of modified polyethylene powder;
wherein the surface of the modified polyethylene powder is coated with-NH2Graft modification of one or more of-Cl or-F.
According to the high wear-resistant resin, the wear-resistant resin preferably comprises the following components in parts by weight:
a resin matrix 100;
2-10 parts of modified polyethylene powder;
wherein the surface of the modified polyethylene powder is coated with-NH2and/or-F graft modification.
In another aspect, the present invention provides a method for preparing the above abrasion resistant resin, comprising the steps of: and uniformly mixing the resin matrix particles and the modified polyethylene powder in parts by weight, adding the mixture into a mixing roll for mixing, and extruding the mixture through an extruder to obtain the wear-resistant resin.
According to the method of the present invention, preferably, the modified polyethylene powder is prepared by the following steps:
adding polyethylene powder into a vacuum reactor, and carrying out heat treatment and first vacuumizing treatment to obtain a vacuum reactor to be reacted; wherein the temperature of the vacuum reactor to be reacted is not higher than the melting temperature of the polyethylene powder, and the pressure in the vacuum reactor to be reacted is-0.05-0 Mpa;
step (b), filling reaction gas into a vacuum reactor to be reacted; the reaction gas is a mixed gas of A-type gas and B-type gas, the A-type gas is selected from one of carbon tetrachloride, methane chloride, carbon tetrafluoride, sulfur hexafluoride or nitrogen trifluoride, and the B-type gas is hydroxyl-containing gas or ammonia;
and (c) after reaction gas is filled, discharging the vacuum reactor to be reacted by using a radio frequency discharge electrode to obtain modified polyethylene powder.
According to the method of the invention, preferably, in the step (a), the average molecular weight of the polyethylene powder is 200-1000 ten thousand; in the step (B), the volume fraction of the B-type gas in the mixed gas is 0-10 vol%.
According to the method of the present invention, preferably, in the step (c), the discharge voltage is 20-200 kV, the discharge power is 0.3-0.5 watt per cubic meter, and the discharge duration is 10min-5 hr.
The invention has the beneficial effects that:
the wear-resistant plastic disclosed by the invention has long-term aging wear resistance and better bonding property.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below.
The pressure in the present invention refers to the relative pressure.
The preparation method of the modified polyethylene powder comprises the following steps: (1) a preparation step of a vacuum reactor to be reacted; (2) a step of inflation; (3) and (3) performing radio frequency discharge reaction.
< preparation step of vacuum reactor to be reacted >
The preparation steps of the vacuum reactor to be reacted comprise: adding the polyethylene powder into a vacuum reactor, and carrying out heat treatment and first vacuumizing treatment to obtain the vacuum reactor to be reacted.
In the invention, the diameter of the polyethylene powder is 10-250 μm; preferably, the diameter of the polyethylene powder is 20-200 μm; more preferably, the polyethylene powder has a diameter of 50 to 100 μm. The average molecular weight of the polyethylene is 200-1000 ten thousand; preferably, the average molecular weight of the polyethylene is 300-1000 ten thousand; more preferably, the polyethylene has an average molecular weight of 500 to 800 ten thousand. The polyethylene powder with the specification can be better modified, and particularly the polarity of the polyethylene powder is improved, so that the modified polyethylene powder is better dispersed in a resin matrix, and the caking property of the resin matrix is improved.
According to one embodiment of the invention, the polyethylene powder has a diameter of 50 to 100 μm and the polyethylene has an average molecular weight of 500 to 800 ten thousand.
In the invention, the temperature of the vacuum reactor to be reacted after heat treatment is not higher than the melting temperature of the polyethylene powder; preferably, the temperature of the vacuum reactor to be reacted after heat treatment is lower than the melting temperature of the polyethylene powder; more preferably, the temperature of the vacuum reactor to be reacted after the heat treatment is 10 ℃ or more and 50 ℃ or less lower than the melting temperature of the polyethylene powder. The higher reaction temperature is beneficial to improving the reaction activity, so that the grafting efficiency of the plasma is improved, but the too high reaction temperature can influence the material performance, and the grafting efficiency can be improved by adopting the temperature range on the premise of ensuring that the influence on the material performance is as small as possible.
In the invention, the pressure in the vacuum reactor to be reacted after the first vacuumizing treatment is-0.05-0 Mpa; preferably, the pressure is-0.05 to-0.01 MPa; more preferably, the pressure is between-0.05 and-0.02 MPa. The first vacuumizing treatment can be adopted to better remove gas impurities, including oxygen, moisture and the like, in the vacuum reactor.
< inflation step >
The inflation step of the present invention comprises: reaction gas is charged into the vacuum reactor to be reacted. In the present invention, the reaction gas is a mixed gas of a group a gas and a group B gas. The A-type gas is selected from one or more of carbon tetrachloride, methane chloride, carbon tetrafluoride, sulfur hexafluoride or nitrogen trifluoride; preferably, the group a gas is selected from one or more of carbon tetrachloride, carbon tetrafluoride, sulphur hexafluoride or nitrogen trifluoride; more preferably, the group a gas is selected from one or more of carbon tetrachloride, carbon tetrafluoride or nitrogen trifluoride. The B type gas is hydroxyl-containing gas or ammonia gas; preferably, the group B gas is ammonia. The modified polyethylene powder obtained by adopting the A-type gas and the B-type gas has better performance. According to one embodiment of the invention, the group a gas is carbon tetrafluoride and the group B gas is ammonia.
In the present invention, the volume fraction of the group B gas in the mixed gas is 0 to 10 vol%, preferably 0 to 8 vol%, and more preferably 2 to 5 vol%. The modified polyethylene powder obtained by adopting the mixed gas has better performance, and can be added into resin as an additive to enable the resin to have higher and more durable wear resistance. According to a specific embodiment of the invention, the polyethylene powder has an average molecular weight of 200 to 1000 ten thousand; in the step (B), the volume fraction of the B-type gas in the mixed gas is 0-10 vol%; preferably, the average molecular weight of the polyethylene powder is 300-1000 ten thousand; in the step (B), the volume fraction of the B-type gas in the mixed gas is 0-8 vol%; more preferably, the average molecular weight of the polyethylene powder is 500-800 ten thousand; in the step (B), the volume fraction of the B-type gas in the mixed gas is 2-5 vol%.
In the present invention, the pressure of the vacuum reactor to be reacted with the mixed gas is 0.01 to 0.5MPa, preferably 0.05 to 0.3MPa, more preferably 0.1 to 0.2 MPa. Control of-OH or-NH2And the plasma concentration makes the performance of the modified polyethylene powder better.
< radio frequency discharge reaction step >
The radio frequency discharge reaction of the invention comprises the following steps: and after reaction gas is filled, discharging the vacuum reactor to be reacted by using a radio frequency discharge electrode to obtain modified polyethylene powder. In the invention, the discharge voltage is 20-200 kilovolts, the discharge power is 0.3-0.5 watt per cubic meter, and the discharge duration is 10min-5 hr; preferably, the discharge voltage is 50-150 kV, the discharge power is 0.3-0.4 watt per cubic meter, and the discharge duration is 30min-4 hr; more preferably, the discharge voltage is 80-120 kV, the discharge power is 0.4-0.5 watt per cubic meter, and the discharge duration is 2hr-3 hr. The surface of the modified polyethylene powder obtained by the method contains one or more active groups of C-F, C-Cl, C-OH and C-NH 2.
< high abrasion resistance resin >
The high-wear-resistance resin comprises a resin matrix and modified polyethylene powder. Wherein the modified polyethylene powder is shown as the tablePolyethylene powder surface-modified by plasma, i.e. surface-modified by-NH2Graft-modified polyethylene powder of one or more of-OH, -Cl or-F.
In the invention, the wear-resistant plastic comprises 100 parts by weight of resin matrix and 0.1-40 parts by weight of modified polyethylene powder. Preferably, the wear-resistant plastic comprises 100 parts by weight of a resin matrix and 1-20 parts by weight of modified polyethylene powder. More preferably, the abrasion resistant plastic consists of 100 parts by weight of the resin matrix and 2-10 parts by weight of the modified polyethylene powder. By adopting the resin matrix and the modified polyethylene powder in the weight ratio, the wear resistance of the resin can be improved for a long time, and the caking property of the resin is improved.
According to one embodiment of the present invention, the abrasion resistant resin includes 100 parts by weight of a resin matrix and 1 to 20 parts by weight of modified polyethylene powder; wherein the surface of the modified polyethylene powder is coated with-NH2Graft modification of one or more of-Cl or-F. Preferably, the abrasion-resistant resin consists of 100 parts by weight of a resin matrix and 2-10 parts by weight of a modified polyethylene powder; wherein the surface of the modified polyethylene powder is coated with-NH2and/or-F graft modification.
In the present invention, the resin matrix is selected from one or more of PE, PS, ABS, PA, PP, PC, POM, CPE or TPU; preferably, the resin matrix is selected from one or more of PA, PP, PC or TPU; more preferably, the resin matrix is selected from one or more of PA, PP or TPU. Wherein PS is polystyrene, ABS is acrylonitrile-butadiene-styrene copolymer, PA is polyamide, PP is polypropylene, PC is polycarbonate, POM is polyformaldehyde, CPE is chlorinated polyethylene, and TPU is thermoplastic polyurethane elastomer. By adopting the resin matrix, the improvement effect is better.
In the invention, the diameter of the modified polyethylene powder is 10-250 μm; preferably, the diameter of the modified polyethylene powder is 20-200 μm; more preferably, the diameter of the modified polyethylene powder is 50 to 100 μm. The average molecular weight of the polyethylene powder is 200-1000 ten thousand; preferably, the average molecular weight of the polyethylene is 300-1000 ten thousand; more preferably, the polyethylene has an average molecular weight of 500 to 800 ten thousand. The modified polyethylene powder with the specification can be better modified, and particularly the polarity of the modified polyethylene powder is improved, so that the modified polyethylene powder is better dispersed in a resin matrix, and the caking property of the resin matrix is improved. .
< preparation method of highly abrasion-resistant resin >
The preparation method of the high-wear-resistance resin comprises the following steps: and uniformly mixing the resin matrix particles and the modified polyethylene powder in parts by weight, adding the mixture into a mixing roll for mixing, and then extruding the mixture through an extruder to obtain the wear-resistant plastic. The types and the respective parts by weight of the resin matrix particles and the modified polyethylene powder are as described above, and are not described herein again.
In the invention, the resin matrix particles and the modified polyethylene powder are respectively dried, and the drying temperature is not higher than the respective melting points. The drying process controls the moisture content in the resin matrix and the modified polyethylene powder.
The wear-resistant plastic disclosed by the invention not only has higher wear resistance, but also can improve the friction coefficient of the wear-resistant plastic.
Introduction to test methods
1. And (3) abrasion testing: carrying out volume abrasion test by using a test method (roller abrasion or DIN abrasion for short) of GB/T9867; the abrasion resistance of the plastic is detected by adopting a GB/T3960-2016 plastic sliding friction abrasion test method.
2. And (3) testing the friction coefficient: detecting the friction coefficient by adopting a Bruker TriboLab friction tester; wherein a 304 stainless steel head with the diameter of 10mm is selected as the grinding end, and the fz pressure is set to be 20N; the friction tester collects the frictional resistance fx in real time, and the coefficient of friction COF is fx/fz.
Preparation example 1: modification of polyethylene powder:
particle size: 100 μm
Average molecular weight: 500 ten thousand
The preparation method comprises the following steps:
1) 100g of polyethylene powder is placed in a tray, laid flat and placed in a static vacuum reactor, and the volume of the vacuum reactor is 20L; then, vacuumizing the vacuum reactor to-0.05 MPa; and heating the vacuum reactor to 200 ℃ to obtain the vacuum reactor to be reacted.
2) Carbon tetrafluoride (CF)4Purity of>99.99%) and ammonia (NH)3Purity of>99.99%) was charged into the vacuum reactor to be reacted to a pressure of 0.1Mpa, and ammonia gas was charged to 5 vol% of the mixed gas.
3) Discharging the radio frequency power supply electrode in the vacuum reactor to be reacted after the mixed gas is filled, wherein the discharge voltage is 100 kilovolts, the discharge power is 0.3 watt per cubic meter, and the duration is 3 hours, so as to obtain the modified polyethylene powder.
Example 1 preparation of abrasion resistant PA Material
1. Drying 1kg of PA66 granules at 100 deg.C for 8 hr; 50g of modified polyethylene powder was dried at a drying temperature of 70 ℃ for 1 hr.
2. And (3) placing the dried PA66 particles and the modified polyethylene powder into a V-shaped mixer for fully mixing until the mixture is uniformly mixed to obtain a mixture.
3. Setting the screw temperature of a double-screw extruder to 240 ℃, and placing the mixture into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wire rod in a granulator at the tail end through cooling water and a tractor, and shearing and granulating the wire rod by the granulator to obtain the wear-resistant PA material.
Examples 2 to 5
In examples 2 to 5, the weight ratios of the PA66 pellets to the modified polyethylene powder were 100:1, 100:2, 100:10, and 100:12, respectively, and the rest was the same as in example 1.
Example 6
1. Drying 1kg of TPU granules at a drying temperature of 100 ℃ for 2 hr; 50g of the modified polyethylene powder was dried at a drying temperature of 70 ℃ for 1 hr.
2. And (3) placing the dried TPU particles and the modified polyethylene powder in a V-shaped mixer for fully and uniformly mixing to obtain a mixture.
3. Setting the screw temperature of a double-screw extruder to 210 ℃, and placing the mixture into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wire rod in a granulator at the tail end through cooling water and a tractor, and shearing and granulating the wire rod by the granulator to obtain the wear-resistant TPU material.
Examples 7 to 10
In examples 7 to 10, the weight ratios of the TPU particles to the modified polyethylene powder were 100:1, 100:2, and 100:10 and 100:12, respectively, and the rest was the same as in example 6.
Example 11
1. Preparing 1kg of PP particles; 20g of the modified polyethylene powder was dried at a drying temperature of 70 ℃ for 1 hr.
2. And (3) placing the PP particles and the modified polyethylene powder in a V-shaped mixer for fully and uniformly mixing to obtain a mixture.
3. Setting the screw temperature of the double-screw extruder to 200 ℃, and placing the mixture material into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wire rod in a granulator at the tail end through cooling water and a tractor, and shearing and granulating the wire rod by the granulator to obtain the wear-resistant HDPE material.
Examples 12 to 15
In examples 12 to 15, the weight ratios of the PP particles to the modified polyethylene powder were 100:1, 100:5, and 100:10 and 100:12, respectively, and the rest was the same as in example 11.
Comparative example 1
In comparative example 1, 1kg of PA66 granules were dried at a drying temperature of 100 ℃ for 8hr and then placed in a V-blender mixer to be mixed well to obtain a blend; setting the screw temperature of a double-screw extruder to 240 ℃, and placing the mixture material into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wires in a granulator at the tail end by cooling water and a tractor, and shearing and granulating the wires by the granulator to obtain the zero-additive PA66 material.
Comparative example 2
In comparative example 2, 1kg of TPU granules were dried at a drying temperature of 100 ℃ for 2hr and then placed in a V-blender mixer to be mixed thoroughly and homogeneously to obtain a mixture; setting the screw temperature of a double-screw extruder to 210 ℃, and placing the mixture material into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wire rod in a granulator at the tail end through cooling water and a tractor, and shearing and granulating the wire rod by the granulator to obtain the zero-addition TPU material.
Comparative example 3
In comparative example 2, 1kg of PP was placed in a V-type blender mixer to be fully and uniformly mixed to obtain a mixture; setting the screw temperature of the double-screw extruder to 165 ℃, and placing the mixture material into a charging basket of the double-screw extruder; and extruding the mixture by a double screw, placing the formed wire rod in a granulator at the tail end through cooling water and a tractor, and shearing and granulating the wire rod by the granulator to obtain the zero-additive PP material.
The wear resistant materials obtained in examples 1 to 15 and the zero additive materials obtained in comparative examples 1 to 3 were subjected to a wear test and a friction coefficient test, respectively.
TABLE 1 coefficient of friction
TABLE 2 abrasion test GB/T3960-2016
TABLE 3 DIN abrasion mm3
The abrasion resistant materials of examples 6 to 10 and the zero-additive material of comparative example 2 were subjected to a bulk abrasion test using a test method of GB/T9867 (roller abrasion or DIN abrasion for short) under a hardness of 85A, and the results are shown in Table 3.
The wear-resistant materials of examples 1-5 and examples 11-15 and the zero-additive materials of comparative examples 1 and 3 were tested for wear resistance using the GB/T3960-2016 plastic sliding friction wear test method, and the results are shown in Table 2.
The wear resistant materials of examples 1-15 and the zero additive materials of comparative examples 1-3 were subjected to coefficient of friction testing using a brook tribometer, the results of which are shown in table 1.
As is apparent from the analyses in tables 1 to 3, the abrasion resistance of the materials of examples 1 to 15 to which the modified polyethylene powder was added was significantly improved but the friction coefficient was relatively lowered, compared to the zero-additive materials of comparative examples 1 to 3. When the addition amount of the modified polyethylene powder is less than 2:100, the wear resistance is not obviously increased; when the addition amount of the modified polyethylene powder is more than 10:100, the friction coefficient is not obviously reduced, and even is slightly increased.
Claims (10)
1. The high-wear-resistance resin is characterized by comprising the following components in parts by weight:
a resin matrix 100;
0.1-40 parts of modified polyethylene powder;
wherein the surface of the modified polyethylene powder is coated with-NH2One or more of-OH, -Cl or-F.
2. The high-abrasion-resistance resin as claimed in claim 1, wherein the diameter of the modified polyethylene powder is 10 to 250 μm; wherein the polyethylene has an average molecular weight of 200 to 1000 ten thousand.
3. The high abrasion resistance resin according to claim 1, wherein said resin matrix is selected from one or more of PS, ABS, PA, PP, PC, POM, CPE or TPU.
4. The high abrasion resistance resin according to claim 3, wherein said resin matrix is selected from one or more of PA, PP or TPU.
5. The high abrasion resistance resin according to any one of claims 1 to 4, wherein said abrasion resistance resin comprises the following components in parts by weight:
a resin matrix 100;
1-20 parts of modified polyethylene powder;
wherein the modified polyethylene powderSurface of the body is coated with-NH2Graft modification of one or more of-Cl or-F.
6. The high abrasion resistance resin according to any one of claims 1 to 4, wherein said abrasion resistance resin is composed of the following components in parts by weight:
a resin matrix 100;
2-10 parts of modified polyethylene powder;
wherein the surface of the modified polyethylene powder is coated with-NH2and/or-F graft modification.
7. A method of preparing the abrasion resistant resin of claim 1, comprising the steps of: and uniformly mixing the resin matrix particles and the modified polyethylene powder in parts by weight, adding the mixture into a mixing roll for mixing, and extruding the mixture through an extruder to obtain the wear-resistant resin.
8. The method according to claim 7, wherein the modified polyethylene powder is prepared by the following steps:
adding polyethylene powder into a vacuum reactor, and carrying out heat treatment and first vacuumizing treatment to obtain a vacuum reactor to be reacted; wherein the temperature of the vacuum reactor to be reacted is not higher than the melting temperature of the polyethylene powder, and the pressure in the vacuum reactor to be reacted is-0.05-0 Mpa;
step (b), filling reaction gas into a vacuum reactor to be reacted; the reaction gas is a mixed gas of A-type gas and B-type gas, the A-type gas is selected from one of carbon tetrachloride, methane chloride, carbon tetrafluoride, sulfur hexafluoride or nitrogen trifluoride, and the B-type gas is hydroxyl-containing gas or ammonia;
and (c) after reaction gas is filled, discharging the vacuum reactor to be reacted by using a radio frequency discharge electrode to obtain modified polyethylene powder.
9. The method for preparing high friction coefficient abrasion resistant plastic according to claim 8, wherein in step (a), the average molecular weight of the polyethylene powder is 200-1000 ten thousand; in the step (B), the volume fraction of the B-type gas in the mixed gas is 0-10 vol%.
10. The method of claim 9, wherein in step (c), the discharge voltage is 20-200 kv, the discharge power is 0.3-0.5 w/m, and the discharge duration is 10min-5 hr.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108424535A (en) * | 2018-03-30 | 2018-08-21 | 南京菲锐迪新材料科技有限公司 | A kind of polar polymeric powder by Low Temperature Plasma Treating |
| CN108456317A (en) * | 2018-03-30 | 2018-08-28 | 南京菲锐迪新材料科技有限公司 | A kind of method that low temperature plasma prepares polar polymeric powder |
-
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108424535A (en) * | 2018-03-30 | 2018-08-21 | 南京菲锐迪新材料科技有限公司 | A kind of polar polymeric powder by Low Temperature Plasma Treating |
| CN108456317A (en) * | 2018-03-30 | 2018-08-28 | 南京菲锐迪新材料科技有限公司 | A kind of method that low temperature plasma prepares polar polymeric powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115819966A (en) * | 2022-12-12 | 2023-03-21 | 江苏尚艾新材料科技有限公司 | Wear-resistant reinforced nylon material and preparation method thereof |
| CN115819966B (en) * | 2022-12-12 | 2024-05-31 | 江苏尚艾新材料科技有限公司 | Wear-resistant reinforced nylon material and preparation method thereof |
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Correction item: transfer of patent application right Correct: JIANGSU JICUI ADVANCED HIGH-MOLECULAR MATERIAL INSTITUTE Co.,Ltd.|Room 626, Hatching Building, No. 99 Tuanjie Road, Yanchuang Park, Jiangbei New District, Nanjing City, Jiangsu Province, 211899 False: Jiangsu Jicui Advanced Polymer Materials Co.,Ltd.|Room 626, Hatching Building, No. 99 Tuanjie Road, Yanchuang Park, Jiangbei New District, Nanjing City, Jiangsu Province, 211899 Number: 34-02 Volume: 38 |
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