CN102585434B - Sound-attenuating and wear-resistant polyformaldehyde material and preparation method thereof - Google Patents
Sound-attenuating and wear-resistant polyformaldehyde material and preparation method thereof Download PDFInfo
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- CN102585434B CN102585434B CN201210004114.4A CN201210004114A CN102585434B CN 102585434 B CN102585434 B CN 102585434B CN 201210004114 A CN201210004114 A CN 201210004114A CN 102585434 B CN102585434 B CN 102585434B
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- 229920006324 polyoxymethylene Polymers 0.000 title claims abstract description 85
- 239000000463 material Substances 0.000 title claims abstract description 63
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 31
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 24
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 24
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 claims abstract description 21
- 239000000314 lubricant Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims description 35
- 239000003112 inhibitor Substances 0.000 claims description 21
- 230000003647 oxidation Effects 0.000 claims description 21
- 238000007254 oxidation reaction Methods 0.000 claims description 21
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 229930040373 Paraformaldehyde Natural products 0.000 claims description 16
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 16
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 16
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 8
- 235000019260 propionic acid Nutrition 0.000 claims description 8
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 8
- HVLLSGMXQDNUAL-UHFFFAOYSA-N triphenyl phosphite Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)OC1=CC=CC=C1 HVLLSGMXQDNUAL-UHFFFAOYSA-N 0.000 claims description 8
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 6
- 238000005469 granulation Methods 0.000 claims description 4
- 230000003179 granulation Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 239000003963 antioxidant agent Substances 0.000 abstract description 3
- 230000003078 antioxidant effect Effects 0.000 abstract description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000012745 toughening agent Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 11
- 239000000843 powder Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 238000003756 stirring Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 6
- BGYHLZZASRKEJE-UHFFFAOYSA-N [3-[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxy]-2,2-bis[3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoyloxymethyl]propyl] 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CCC(=O)OCC(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)(COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)COC(=O)CCC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 BGYHLZZASRKEJE-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000005453 pelletization Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 235000006708 antioxidants Nutrition 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92514—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92561—Time, e.g. start, termination, duration or interruption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92904—Die; Nozzle zone
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides a sound-attenuating and wear-resistant polyformaldehyde material. The material comprises the following components in percentage by weight: 55 to 75 percent of polyformaldehyde resin, 5 to 10 percent of low density polyethylene, 3 to 10 percent of toughening agent, 10 to 20 percent of polytetrafluoroethylene, 2 to 5 percent of compatilizer, 0.2 to 0.4 percent of antioxidant, 0.2 to 0.6 percent of lubricating agent and 0.2 to 0.6 percent of aldehyde absorbing agent. The invention also provides a method for preparing the sound-attenuating and wear-resistant polyformaldehyde material. The sound-attenuating and wear-resistant polyformaldehyde material has high strength, dimensional stability, creep resistance, fatigue resistance, and high self-lubricating property, sound-attenuating property and wear resistance; and the preparation method for the material is simple, convenient to operate, high in benefit, low in cost and suitable for industrial production.
Description
Technical field
The invention belongs to technical field of polymer materials, be specifically related to a kind of noise reduction wear-resisting polyformaldehyde material and preparation method thereof.
Background technology
POM (polyoxymethylene) resin, as the one in five large-engineering plastics, is one of most widely used polymkeric substance, belongs to thermoplasticity crystalline polymer, not containing side chain, and high-density, high crystallization linear polymer, has excellent over-all properties.
Polyoxymethylene is a kind of smooth surface, glossiness hard and fine and close material, can be in-40～100 ℃ of temperature ranges life-time service.Its wear resistance and self lubricity are also superior than most engineering plastics, and bending stretch intensity is high, and water-absorbent is little, dimensional stabilizing, and high rigidity, creep resistance, fatigue resistance is high, is particularly suitable for manufacturing gear and bearing.
But POM is used in those oilness, wearability, rigidity and dimensional stability are required on the mechanical part of stricter slip and rolling, noise is large, and frictional coefficient is large, and material property needs further to improve.
Summary of the invention
Technical problem to be solved by this invention is to overcome the defect of prior art, and a kind of noise reduction wear-resisting polyformaldehyde material and preparation method thereof is provided.
The present invention is achieved in that a kind of noise reduction wear-resisting polyformaldehyde material, and it comprises the following component according to weight percent:
Polyformaldehyde resin 55～75%;
Low Density Polyethylene 5～10%;
Toughner 3～10%;
Tetrafluoroethylene 10～20%;
Compatilizer 2～5%;
Oxidation inhibitor 0.2～0.4%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
And, a kind of preparation method of noise reduction wear-resisting polyformaldehyde material, it comprises the steps:
Take each component by the formula of above-mentioned noise reduction wear-resisting polyformaldehyde material;
Described polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer are mixed, obtain original mixture;
By described tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, obtain mixture;
Described mixture is melt extruded, and granulation, obtains described noise reduction wear-resisting polyformaldehyde material.
Noise reduction wear-resisting polyformaldehyde material provided by the invention, by adopting the rationally composite of polyformaldehyde resin, Low Density Polyethylene, toughner, tetrafluoroethylene, compatilizer, oxidation inhibitor, lubricant and the agent of suction aldehyde, guarantee that material has high strength, dimensional stabilizing, creep resistance, fatigue proof performance, meanwhile, also have excellent self-lubricating, noise reduction and wear resistance.In addition, the starting material of its use are all environmentally-friendly sanitary levels, and the material of preparation contacts with human body can not cause any harmful material.Further, the preparation method of this noise reduction wear-resisting polyformaldehyde material adopts the disposable technique completing of mixing reaction extruding pelletization, and its preparation method technique is simple, easy to operate, high efficiency, and cost is low, is suitable for suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the schema of the noise reduction wear-resisting polyformaldehyde material preparation method of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
A kind of noise reduction wear-resisting polyformaldehyde material of the embodiment of the present invention, it comprises the following component according to weight percent:
Polyformaldehyde resin 69%;
Low Density Polyethylene 7%;
Toughner 5%;
Tetrafluoroethylene 15%;
Compatilizer 3%;
Oxidation inhibitor 0.3%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
Wherein, preferably, described polyformaldehyde resin is copoly type polyoxymethylene, and relative density is 1.40～1.43, as Yuntianhua company produces, and trade names M90.
Described Low Density Polyethylene is preferably relative density 0.91～0.929, and molecular weight is 10～500,000 polyethylene, as China Petrochemical Industry produces, and trade names LDPE 7042.By adding Low Density Polyethylene, the noise of material in the time highly rotating reduced.
Described toughner is preferably Polyurethane Thermoplastic Elastomer (TPU), is more preferably polyether-type TPU, and hardness is 70～95A.Produce as German BASF, trade names are 1185A.
Described tetrafluoroethylene is preferably lower molecular weight micro powder type tetrafluoroethylene, and powder approximately 150 orders are produced as Daikin, and trade names are L-5.Add lower molecular weight micro mist tetrafluoroethylene, the frictional coefficient of polyoxymethylene further reduces, and wearability improves.
Described compatilizer is ethylene-vinyl acetate copolymer (EVA), and vinyl acetate between to for plastic (VA) resin content is 25～50%.As E.I.Du Pont Company produces, VA content 35%, the EVA of trade names 40W.
Described oxidation inhibitor is the composite of four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester primary antioxidant and three (2,4-di-t-butyl) phenyl-phosphite auxiliary anti-oxidant.As select Ciba company to produce, trade names are respectively Irganox1010 and Irganox168.Further, the mass ratio of four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2,4-di-t-butyl) phenyl-phosphite is 2: 1.
Described lubricant is vinyl bis-stearamides, as company of salon produces, and trade names EBS 120.Vinyl bis-stearamides not only has good external lubrication effect, and has good internal lubrication effect, can improve mobility and the release property of material in processing, thereby has improved the output of noise reduction wear-resisting polyformaldehyde materials processing, has reduced energy consumption.
The agent of described suction aldehyde is long carbochain carboxylic acid calcium salt, buff powder, and as Clariant company produces, trade names CAV102.
Refer to Fig. 1, show the preparation method of a kind of noise reduction wear-resisting polyformaldehyde material of the embodiment of the present invention, the method comprises the steps:
S01: take each component by the formula of above-mentioned noise reduction wear-resisting polyformaldehyde material;
S02: described polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer are mixed, obtain original mixture;
S03: by described tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, obtain mixture;
S04: described mixture is melt extruded, and granulation, obtains described noise reduction wear-resisting polyformaldehyde material.
In step S01, all material weighings are accurate, are accurate to 0.001 kilogram.Each component preferred content and kind in described noise reduction wear-resisting polyformaldehyde material and formula are described above, in order to save length, do not repeat them here.
Step S02 is specially, and pours described polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer into whipping device, mixes, and obtains original mixture.
In step S03, by tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, join in mixing tank and mix together with described original mixture, until evenly, obtain mixture.
Step S04 is specially, and the mixture mixing is put into the loading hopper of twin screw extruder, through melt extruding, and granulation; Complete processing is as follows: 140～170 ℃ of twin screw extruder one district's temperature, and two 160～175 ℃ of district's temperature, three 175～190 ℃ of district's temperature, four 170～190 ℃ of district's temperature, 175～190 ℃ of heads, the residence time 2～3min, pressure is 12～18MPa.
The noise reduction wear-resisting polyformaldehyde material that the embodiment of the present invention provides, add auxiliary agent by choose reasonable, obtain the material of excellent combination property, it not only has high strength, dimensional stabilizing, creep resistance, fatigue proof superperformance, also have excellent self-lubricating, noise reduction and wear resistance.Additive therefor is commercially available, and production cost is low, and described noise reduction wear-resisting polyformaldehyde material produce technique is simple, easily controls.The noise reduction wear-resisting polyformaldehyde material obtaining is suitable for manufacturing and requires high slip and rolling machine parts, such as gear and bearing etc. very much.
By concrete formula and preparation method's embodiment, above-mentioned noise reduction wear-resisting polyformaldehyde material and preparation method thereof is described below.
Embodiment 1:
Component and the weight percentage thereof of the noise reduction wear-resisting polyformaldehyde material of the present embodiment are:
Polyformaldehyde resin 69%;
Low Density Polyethylene 7%;
Toughner 5%;
Tetrafluoroethylene 15%;
Compatilizer 3%;
Oxidation inhibitor 0.3%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
Wherein, polyformaldehyde resin is copoly type POM, and Yuntianhua company produces, trade names M90; Low Density Polyethylene is selected relative density 0.91～0.929, and China Petrochemical Industry produces, trade names LDPE 7042; Toughner thermoplastic elastomer TPU selects polyether-type, hardness 85A, and German BASF is produced, and trade names are 1185A; Tetrafluoroethylene is selected micro powder type, powder 150 orders, and Daikin is produced, and trade names are L-5; Compatilizer is selected EVA resin, VA content 35%, and E.I.Du Pont Company produces, trade names 40W; Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, and three (2,4-di-t-butyl) phenyl-phosphite selects Ciba company to produce, and trade names are respectively Irganox1010 and Irganox168; Lubricant is vinyl bis-stearamides, and company of salon produces, trade names EBS 120.Inhale aldehyde agent for long carbochain carboxylic acid calcium salt, buff powder, Clariant company produces, trade names CAV102.
S11: the formula according to above-mentioned noise reduction wear-resisting polyformaldehyde material takes each component;
S12: polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer are weighed up and pour agitator into, stir, obtain original mixture;
S13: by tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, pour agitator into and stir;
S14: the material mixing is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization, obtains described noise reduction wear-resisting polyformaldehyde material.Wherein, the temperature setting of the each heating region of screw rod is respectively: district's temperature: 165 ℃; 2nd district: 175 ℃; 3rd district: 185 ℃; 4th district: 180 ℃; Head: 180 ℃; The residence time 1～2min.Pressure is 14MPa.
Comparative example 1:
The component of the compound polyformaldehyde material of the present embodiment and weight percentage thereof are:
Polyformaldehyde resin 76%;
Toughner 5%;
Tetrafluoroethylene 15%;
Compatilizer 3%;
Oxidation inhibitor 0.3%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
Wherein, polyformaldehyde resin is copoly type POM, and Yuntianhua company produces, trade names M90; Toughner thermoplastic elastomer TPU selects polyether-type, hardness 85A, and German BASF is produced, and trade names are 1185A; Tetrafluoroethylene is selected micro powder type, powder 150 orders, and Daikin is produced, and trade names are L-5; Compatilizer is selected EVA resin, VA content 35%, and E.I.Du Pont Company produces, trade names 40W; Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, and three (2,4-di-t-butyl) phenyl-phosphite selects Ciba company to produce, and trade names are respectively Irganox1010 and Irganox168; Lubricant is vinyl bis-stearamides, and company of salon produces, trade names EBS 120.Inhale aldehyde agent for long carbochain carboxylic acid calcium salt, buff powder, Clariant company produces, trade names CAV102.
S101: the formula according to above-mentioned noise reduction wear-resisting polyformaldehyde material takes each component;
S102: polyformaldehyde resin, toughner and compatilizer are weighed up and pour agitator into, stir, obtain original mixture;
S103: by tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, pour agitator into and stir;
S104: the material mixing is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization, obtains described noise reduction wear-resisting polyformaldehyde material.Wherein, the temperature setting of the each heating region of screw rod is respectively: district's temperature: 165 ℃; 2nd district: 175 ℃; 3rd district: 185 ℃; 4th district: 180 ℃; Head: 180 ℃; The residence time 1～2min.Pressure is 14MPa.
Comparative example 2:
The component of the compound polyformaldehyde material of the present embodiment and weight percentage thereof are:
Polyformaldehyde resin 84%;
Low Density Polyethylene 7%;
Toughner 5%;
Compatilizer 3%;
Oxidation inhibitor 0.3%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
Wherein, polyformaldehyde resin is copoly type POM, and Yuntianhua company produces, trade names M90; Low Density Polyethylene is selected relative density 0.91～0.929, and China Petrochemical Industry produces, trade names LDPE 7042; Toughner thermoplastic elastomer TPU selects polyether-type, hardness 85A, and German BASF is produced, and trade names are 1185A; Compatilizer is selected EVA resin, VA content 35%, and E.I.Du Pont Company produces, trade names 40W; Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, and three (2,4-di-t-butyl) phenyl-phosphite selects Ciba company to produce, and trade names are respectively Irganox1010 and Irganox168; Lubricant is vinyl bis-stearamides, and company of salon produces, trade names EBS 120.Inhale aldehyde agent for long carbochain carboxylic acid calcium salt, buff powder, Clariant company produces, trade names CAV102.
S201: the formula according to above-mentioned noise reduction wear-resisting polyformaldehyde material takes each component;
S202: polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer are weighed up and pour agitator into, stir, obtain original mixture;
S203: by oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, pour agitator into and stir;
S204: the material mixing is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization, obtains compound polyformaldehyde material.Wherein, the temperature setting of the each heating region of screw rod is respectively: district's temperature: 165 ℃; 2nd district: 175 ℃; 3rd district: 185 ℃; 4th district: 180 ℃; Head: 180 ℃; The residence time 1～2min.Pressure is 14MPa.
Comparative example 3:
The component of the compound polyformaldehyde material of the present embodiment and weight percentage thereof are:
Polyformaldehyde resin 91%;
Toughner 5%;
Compatilizer 3%;
Oxidation inhibitor 0.3%;
Lubricant 0.2～0.6%;
Inhale aldehyde agent 0.2～0.6%.
Wherein, polyformaldehyde resin is copoly type POM, and Yuntianhua company produces, trade names M90; Toughner thermoplastic elastomer TPU selects polyether-type, hardness 85A, and German BASF is produced, and trade names are 1185A; Compatilizer is selected EVA resin, VA content 35%, and E.I.Du Pont Company produces, trade names 40W; Oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, and three (2,4-di-t-butyl) phenyl-phosphite selects Ciba company to produce, and trade names are respectively Irganox1010 and Irganox168; Lubricant is vinyl bis-stearamides, and company of salon produces, trade names EBS 120.Inhale aldehyde agent for long carbochain carboxylic acid calcium salt, buff powder, Clariant company produces, trade names CAV102.
S301: the formula according to above-mentioned noise reduction wear-resisting polyformaldehyde material takes each component;
S302: polyformaldehyde resin, toughner and compatilizer are weighed up and pour agitator into, stir, obtain original mixture;
S303: by oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, pour agitator into and stir;
S304: the material mixing is joined in the hopper of twin screw extruder, through melt blending, extruding pelletization, obtains described compound polyformaldehyde material.Wherein, the temperature setting of the each heating region of screw rod is respectively: district's temperature: 165 ℃; 2nd district: 175 ℃; 3rd district: 185 ℃; 4th district: 180 ℃; Head: 180 ℃; The residence time 1～2min.Pressure is 14MPa
The particle completing is as stated above dried to 3～6 hours in advance in the convection oven of 100 ℃, and then dried particulate material is carried out in injector to injection molding sample preparation, injection mold temperature control is at 100 ℃.
Performance test:
Tensile strength is tested by GB/T 1040 standards, specimen types is II type sample, batten size (mm): 115 (length) × (6 ± 0.4) (middle parallel portion width) × 2 (thickness), draw speed is 200mm/min.Noise test is tested according to treasured reason POM noise testing standard, and specimen types is two hollow rings, circle diameter 30mm, hollow diameter 10mm, annulus thickness 1.5mm, two annulus contact area 6.3cm
2, when test, also together, lower annulus is Yuntianhua M90 to two annulus, and upper annulus is for needing test specimens, and when test, upper annulus maintains static, and lower annulus rotates, and rotation condition is: surface pressure 4.9 × 10
-2mPa, rotating speed 2.4cm/s, time 10min.Friction testing is tested according to treasured reason POM friction testing standard, and specimen types is two hollow rings, circle diameter 25.6mm, hollow diameter 20mm, annulus thickness 15mm, two annulus contact area 2.0cm
2, when test, also together, lower annulus is Yuntianhua M90 to two annulus, and upper annulus is for needing test specimens, and when test, upper annulus maintains static, and lower annulus rotates, and rotation condition is: surface pressure 5.8 × 10
-2mPa, rotating speed 15cm/s, time 24h.
The performance of the noise reduction wear-resisting polyformaldehyde material of above-described embodiment 1 and comparative example 1～3 preparation is as shown in table 1 respectively.
Table 1
| Composition | Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Tensile strength (MPa) | 52 | 53 | 52 | 56 |
| Elongation at break (%) | 62 | 56 | 86 | 75 |
| Frequency noise (decibel DB) | 33 | 62 | 35 | 65 |
| Frictional coefficient (μ) | 0.23 | 0.21 | 0.38 | 0.36 |
| Wear volume (× 10 -3 mm 3/N·KM) | 6.8 | 6.9 | 38.5 | 39.1 |
As can be seen from the above table, polyformaldehyde material has good oilness and wear resistance, adds after LDPE, and the noise that material produces in running obviously reduces, the polyoxymethylene noise decibel that does not add LDPE is 65, added after LDPE, noise drops to 33 decibels from 65 decibels, adds after PTFE, the frictional coefficient of material obviously declines, under frictional dissipation, reduce, drop to 0.21 from the frictional coefficient 0.36 of unmodified resin, frictional dissipation drops to 6.8 from 39.1.At the fields such as some machineries, industry, the gear that polyoxymethylene is made, the products such as bearing, in use carrying out rotation at a high speed always, it is little that this just makes material to meet noise, and frictional coefficient is low, the wear-resistant requirement of Denging, by add Low Density Polyethylene and PTFE micro mist in common polyformaldehyde resin, carry out modification blend, can reduce greatly the noise producing of polyoxymethylene, frictional coefficient and frictional dissipation further reduce, obtain noise reduction wear-resisting polyformaldehyde material, to meet the demand in market.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a preparation method for noise reduction wear-resisting polyformaldehyde material, it comprises the steps:
Take each component by following formula:
Described polyformaldehyde resin is copoly type polyoxymethylene, and relative density is 1.40～1.43,
Described polyformaldehyde resin, Low Density Polyethylene, toughner and compatilizer are mixed, obtain original mixture;
By described tetrafluoroethylene, oxidation inhibitor, lubricant and the agent of suction aldehyde, mix with described original mixture, obtain mixture;
Described mixture is melt extruded, and granulation, obtains described noise reduction wear-resisting polyformaldehyde material.
2. the preparation method of noise reduction wear-resisting polyformaldehyde material according to claim 1, is characterized in that, described Low Density Polyethylene is relative density 0.91～0.929, and molecular weight is 10～500,000 polyethylene.
3. the preparation method of noise reduction wear-resisting polyformaldehyde material according to claim 1, is characterized in that, described toughner is Polyurethane Thermoplastic Elastomer.
4. the preparation method of noise reduction wear-resisting polyformaldehyde material according to claim 1, is characterized in that, described compatilizer is ethylene-vinyl acetate copolymer, and vinyl acetate resin content is 25～50%.
5. the preparation method of noise reduction wear-resisting polyformaldehyde material according to claim 1, it is characterized in that, described oxidation inhibitor is four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2,4-di-t-butyl) mixture of phenyl-phosphite, the mass ratio of described four [β-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2,4-di-t-butyl) phenyl-phosphite is 2:1.
6. according to the preparation method of the noise reduction wear-resisting polyformaldehyde material described in any one in claim 1-5, it is characterized in that, the described processing condition that melt extrude are: 140～170 ℃ of district's temperature, two 160～175 ℃ of district's temperature, three 175～190 ℃ of district's temperature, four 170～190 ℃ of district's temperature, 175～190 ℃ of heads, the residence time 2～3min, pressure is 12～18MPa.
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| CN102888076A (en) * | 2012-11-05 | 2013-01-23 | 科创聚合物(苏州)有限公司 | Preparation process of self-lubricating wear-resistant injection molding molybdenum disulfide polyformaldehyde |
| CN102898772A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | Polyformaldehyde with high abrasion resistance and preparation technology thereof |
| CN102888075A (en) * | 2012-11-05 | 2013-01-23 | 科创聚合物(苏州)有限公司 | Preparation process of toughened filled polyformaldehyde with function of preventing buckling deformation |
| CN103435966A (en) * | 2012-12-19 | 2013-12-11 | 安徽科聚新材料有限公司 | Polyformaldehyde material and preparation method thereof |
| CN104212119B (en) * | 2013-05-30 | 2018-04-27 | 上海杰事杰新材料(集团)股份有限公司 | A kind of heat-proof water polyformaldehyde composition and preparation method thereof |
| CN103937149A (en) * | 2014-04-02 | 2014-07-23 | 宁国市华晟塑胶制品有限公司 | Method for using polyformaldehyde homopolymer |
| CN103937148B (en) * | 2014-05-12 | 2017-04-05 | 云南云天化股份有限公司 | Polyoxymethylene resin composition and preparation method thereof |
| CN106939115A (en) * | 2017-03-30 | 2017-07-11 | 桑德（天津）再生资源投资控股有限公司 | A kind of preparation method of noise elimination lubricating function material |
| CN109912923A (en) * | 2019-02-21 | 2019-06-21 | 浙江中达精密部件股份有限公司 | A kind of wear-resisting polyformaldehyde material and preparation method thereof |
| CN110527244A (en) * | 2019-08-26 | 2019-12-03 | 上海华合复合材料有限公司 | A kind of low warpage, high-dimensional stability exempt from spray POM composite material and preparation method |
| CN113831680A (en) * | 2020-06-24 | 2021-12-24 | 合肥杰事杰新材料股份有限公司 | Low-shrinkage high-toughness polyformaldehyde composition and preparation method thereof |
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| CN113970821B (en) * | 2021-11-17 | 2022-11-04 | 长飞光纤光缆股份有限公司 | Air-blowing micro cable capable of being used under large duty ratio, and preparation method and application of outer layer of air-blowing micro cable |
| CN114752264A (en) * | 2022-03-30 | 2022-07-15 | 连云港天邦科技开发有限公司 | Anti-wall-hanging heat-insulation coating material, preparation method and application thereof |
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