CN105647173A - Wear-resistant nylon composite material and preparation method therefor - Google Patents
Wear-resistant nylon composite material and preparation method therefor Download PDFInfo
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- CN105647173A CN105647173A CN201410627603.4A CN201410627603A CN105647173A CN 105647173 A CN105647173 A CN 105647173A CN 201410627603 A CN201410627603 A CN 201410627603A CN 105647173 A CN105647173 A CN 105647173A
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Abstract
The invention discloses a wear-resistant nylon composite material. The wear-resistant nylon composite material is prepared from the following ingredients in parts by weight: 65-95 parts of high-temperature resistant nylon, 1-15 parts of pretreated molybdenum disulfide, 0.1-1.0 part of antioxidant and 0.2-1.0 part of lubricant. The invention also discloses a preparation method for the wear-resistant nylon composite material. According to the wear-resistant nylon composite material and the preparation method therefor, the pretreated molybdenum disulfide is added as a wear resistance modifier, and proper processing aids are added, so that the wear resistance and heat resistance of high-temperature nylon are improved, the use value is higher, the field of employment is widened, and the wear-resistant nylon composite material can be extensively applied to the fields of electronic electrical appliances, automobiles, war industry and the like; the composite material disclosed by the invention is simple in extruded preparation process, high in continuous production efficiency and stable in product quality; and the high-temperature nylon and the pretreated molybdenum disulfide are pre-mixed firstly, so that the dispersity of the pretreated molybdenum disulfide in the composite material is greatly improved, and the wear resistance of the composite material is improved.
Description
Technical field
The invention belongs to technical field of polymer materials, specifically in particular to a kind of wear-resisting high temperature resistant nylon composite material and its preparation method.
Background technology
High temperature resistant nylon is the one in aromatic polyamide, and it is that the diamines by band aromatic nucleus or dicarboxylic acid and aliphatic dicarboxylic acid or diamines are through the preparation-obtained polyamide resin of polycondensation. Owing to importing aromatic nucleus in polymeric amide molecular backbone chain, thus improve its thermotolerance and mechanical property, reduce water-intake rate, and have more suitable performance/price ratio. So high temperature resistant nylon is the resin of a kind of high heat resistance between general engineering plastic nylon and thermostability engineering plastic polyether-ether-ketone (PEEK), increasing in field application such as machinery, electronics. High temperature resistant nylon product mainly contains polymeric amide 46, MXD6,6T/66,6T/6I, 6T/6I/66 and 9T at present. Modes such as adding anti-wear agent is adopted high temperature resistant nylon to carry out wear-resisting modification to increase its wear resistance though prior art has, but due to the poor compatibility between each addO-on therapy, and the mechanical property loss causing matrix material is serious, limit applying of matrix material.
Summary of the invention
The present invention provides a kind of fire retardation wear-resistance nylon composite material and its preparation method, mainly through high temperature resistant nylon is carried out wear-resisting modification, with reach improve matrix material over-all properties, broaden application field.
For achieving the above object, the technical solution used in the present invention is as follows:
High temperature resistant nylon 65-95 part
Pretreated molybdenumdisulphide 1-15 part
Oxidation inhibitor 0.1-1.0 part
Lubricant 0.2-1.0 part;
Described pretreated molybdenumdisulphide adopts following method to prepare:
(1) molybdenumdisulphide of 1-10kg is joined in the dilution heat of sulfuric acid of concentration 15wt%-20wt% of 5-10L, it is heated to 50-80 DEG C, stir 1-2 hour, filter, with deionized water wash to neutral; Concentration molybdenumdisulphide after washing being joined 5-10L is the sodium hydroxide solution of 15wt%-20wt%, 50-80 DEG C, stirs 1-2 hour, filters, with deionized water wash to neutral, dry;
(2) dried molybdenumdisulphide is added in tolylene diisocyanate, infiltrate 30-60 minute, filter, dry, obtain pretreated molybdenumdisulphide.
The object of described step (1) is: 1, remove molybdenumdisulphide surface impurity; 2, slight erosion molybdenumdisulphide surface, increases the roughness on molybdenumdisulphide surface, it is to increase the consistency of polymkeric substance and mechanical property. Dilute sulphuric acid and concentration of sodium hydroxide solution, Heating temperature is too high or churning time is too long even can dissolve molybdenumdisulphide by heavy corrosion molybdenumdisulphide, greatly destroys the performance of molybdenumdisulphide itself; Concentration, Heating temperature are too low, churning time is short, do not have the due effect of this step.
In described step (2), molybdenumdisulphide is joined in specific solvent and infiltrates, a large amount of tolylene diisocyanates can be made to be grafted to molybdenumdisulphide surface, the interface of molybdenumdisulphide and high-temperature nylon is slightly cross-linked, greatly strengthen the two interface binding power, thus significantly improve the mechanical property especially wear resisting property of composition.
Described high temperature resistant nylon is at least one in nylon 46, nylon 6T, nylon 9 T.
Described molybdenumdisulphide, its purity >=99.9%, median size are 1.5 ��m; Water content��0.05wt% in described molybdenumdisulphide.
Described oxidation inhibitor is four [��-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (antioxidant 1010) and three (2,4-tert-butyl-phenyl) phosphorous acid ester (irgasfos 168s) are by weight the mixture being 1:1.
Described lubricant is at least one in barium stearate, Zinic stearas.
It is a further object to provide the preparation method of a kind of Wear-resistant, high-temperature resistant nylon composite materials, it adopts following step:
(1) 65-95 part high temperature resistant nylon, the pretreated molybdenumdisulphide of 1-15 part are placed in high mixer, at 80 DEG C, stir under the rotating speed of 1000 turns/min evenly; Add 0.1-1.0 part oxidation inhibitor again, 0.2-1.0 part lubricant mixes under normal temperature;
(2) joining in twin screw extruder by the raw material mixed through (2), melting extruding pelletization, the temperature of forcing machine is 280 DEG C-320 DEG C, rate of extrusion 300r/min.
The usefulness of the present invention is:
1, the present invention adds pretreated molybdenumdisulphide as abrasion resistance modifier, and add suitable processing aid, thus improve the wear-resisting of high-temperature nylon and resistance toheat, make it have higher use value, and widened use field, the fields such as electronic apparatus, automobile, military project can be widely used in.
2, matrix material of the present invention extrudes preparation technology simply, continuous production efficiency height, constant product quality.
3, high-temperature nylon and pretreated molybdenumdisulphide are first carried out pre-mixing by the present invention, thus greatly improve the dispersion in the composite of pretreated molybdenumdisulphide, it is to increase the wear resisting property of matrix material.
Embodiment
The content of the present invention is illustrated further, but the content of the present invention is not only confined to the following examples below in conjunction with specific examples.
The preparation method of the fire retardation wear-resistance nylon composite material of the present invention, adopts following step:
(1) molybdenumdisulphide of 5kg is joined in the dilution heat of sulfuric acid of concentration 17wt% of 5L, it is heated to 70-80 DEG C, stir 1-2 hour, filter, with deionized water wash to neutral; Concentration molybdenumdisulphide after washing being joined 5L is the sodium hydroxide solution of 17wt%, 50-80 DEG C, stirs 1-2 hour, filters, with deionized water wash to neutral, dry;
(2) dried molybdenumdisulphide is added in tolylene diisocyanate, infiltrate 30-60 minute, filter, dry, obtain pretreated molybdenumdisulphide.
(3) high temperature resistant nylon and pretreated molybdenumdisulphide are placed in high mixer, at 80 DEG C, stir 5 minutes under the rotating speed of 1000 turns/min; Add the oxidation inhibitor that weighs up again, lubricant normal temperature mixes.
(4) raw material mixed is joined in twin screw extruder, melting extruding pelletization, extrusion temperature is: 270 DEG C, a district, 280 DEG C, 2nd district, 295 DEG C, 3rd district, 305 DEG C, 4th district, 310 DEG C, 5th district, 300 DEG C, 6th district, 295 DEG C, 7th district, head 285 DEG C, rate of extrusion 300r/min.
Feed composition proportioning as shown in table 1 is adopted to obtain embodiment 1-5, and based on the formula of embodiment 5, do not add pretreated molybdenumdisulphide obtain comparative example 1, simultaneously, after the pellet drying that embodiment 1-5 and comparative example 1 are prepared, according to standard Shooting Technique injection moulding standard batten, respectively it being carried out Mechanics Performance Testing, testing standard and performance data are in table 2.
Component proportion composition in each embodiment of table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | |
| PA6T | 95 | 85 | 65 | |||
| PA46 | 80 | |||||
| PA9T | 70 | 70 | ||||
| Pretreated molybdenumdisulphide | 1 | 5 | 5 | 15 | 10 | |
| Antioxidant 1010 | 0.05 | 0.1 | 0.2 | 0.2 | 0.5 | 0.5 |
| Irgasfos 168 | 0.05 | 0.1 | 0.2 | 0.3 | 0.5 | 0.5 |
| Zinic stearas | 0.2 | 0.8 | 1 | 1 | ||
| Barium stearate | 0.4 | 0.6 |
Table 2 performance test
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | |
| Tensile strength MPa | 125 | 103 | 105 | 131 | 110 | 41 |
| Flexural strength MPa | 253 | 272 | 213 | 205 | 264 | 102 |
| Abrasion % | 9 | 8 | 8 | 11 | 7 | 64 |
| Frictional coefficient | 0.11 | 0.12 | 0.12 | 0.12 | 0.11 | 0.58 |
Detecting data from upper table 2 it may be seen that after adding a certain proportion of pretreated molybdenumdisulphide in material prescription system, material all has lower frictional coefficient, wear resisting property obtains bigger raising. Integrated data illustrates that the technical program achieves the effect of expection, it is to increase while friction and wear behavior, and material maintains excellent tensile property, bending property.
Claims (6)
1. a fire retardation wear-resistance nylon composite material, is prepared from by weight by following component:
High temperature resistant nylon 65-95 part
Pretreated molybdenumdisulphide 1-15 part
Oxidation inhibitor 0.1-1.0 part
Lubricant 0.2-1.0 part;
Described pretreated molybdenumdisulphide adopts following method to prepare:
(1) molybdenumdisulphide of 1-10kg is joined in the dilution heat of sulfuric acid of concentration 15wt%-20wt% of 5-10L, it is heated to 50-80 DEG C, stir 1-2 hour, filter, with deionized water wash to neutral; Concentration molybdenumdisulphide after washing being joined 5-10L is the sodium hydroxide solution of 15wt%-20wt%, 50-80 DEG C, stirs 1-2 hour, filters, with deionized water wash to neutral, dry;
(2) dried molybdenumdisulphide is added in tolylene diisocyanate, infiltrate 30-60 minute, filter, dry, obtain pretreated molybdenumdisulphide.
2. a kind of fire retardation wear-resistance nylon composite material as claimed in claim 1, it is characterised in that, described high temperature resistant nylon is the one in nylon 46, nylon 6T, nylon 9 T.
3. a kind of fire retardation wear-resistance nylon composite material as claimed in claim 1, it is characterised in that, described molybdenumdisulphide, its purity >=99.9%, median size are 1.5 ��m; Described molybdenumdisulphide water content��0.05wt%.
4. a kind of fire retardation wear-resistance nylon composite material as claimed in claim 1, it is characterized in that, described oxidation inhibitor is four [��-(3,5-di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester and three (2,4-tert-butyl-phenyl) phosphorous acid ester be by weight the mixture being 1:1.
5. a kind of fire retardation wear-resistance nylon composite material as claimed in claim 1, it is characterised in that, described lubricant is at least one in barium stearate, Zinic stearas.
6. the preparation method of the described Wear-resistant, high-temperature resistant nylon composite materials of the arbitrary item of claim 1-5, it is characterised in that, adopt following step:
(1) 65-95 part high temperature resistant nylon, the pretreated molybdenumdisulphide of 1-15 part are placed in high mixer, at 80 DEG C, stir under the rotating speed of 1000 turns/min evenly;Add 0.1-1.0 part oxidation inhibitor again, 0.2-1.0 part lubricant mixes under normal temperature;
(2) joining in twin screw extruder by the raw material mixed through (2), melting extruding pelletization, the temperature of forcing machine is 280 DEG C-320 DEG C, rate of extrusion 300r/min.
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| CN201410627603.4A CN105647173A (en) | 2014-11-10 | 2014-11-10 | Wear-resistant nylon composite material and preparation method therefor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892946A (en) * | 2018-05-25 | 2018-11-27 | 东莞市众新材料科技有限公司 | A kind of wear-resisting high-temperature nylon composite material and preparation method |
| CN112480666A (en) * | 2020-12-18 | 2021-03-12 | 南京串晶科技有限公司 | Formula and preparation method of high-wear-resistance modified PA9T composite material |
| CN112500701A (en) * | 2020-12-30 | 2021-03-16 | 南京串晶科技有限公司 | High-wear-resistance modified PA6T composite material |
| CN113956656A (en) * | 2021-11-04 | 2022-01-21 | 河南海瑞祥科技有限公司 | Super-hydrophobic and oleophobic surface wear-resistant nylon composite material and preparation method thereof |
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| CN101792594A (en) * | 2009-11-26 | 2010-08-04 | 苏州市科创聚合物有限公司 | Self-lubricating abrasion-resistant injection-class molybdenum disulfide-filled high-temperature nylon and preparation technique thereof |
| CN104046017A (en) * | 2014-06-17 | 2014-09-17 | 合肥杰事杰新材料股份有限公司 | Wear-resistant and high-temperature-resistant nylon composite material and preparation method thereof |
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| CN101792594A (en) * | 2009-11-26 | 2010-08-04 | 苏州市科创聚合物有限公司 | Self-lubricating abrasion-resistant injection-class molybdenum disulfide-filled high-temperature nylon and preparation technique thereof |
| CN104046017A (en) * | 2014-06-17 | 2014-09-17 | 合肥杰事杰新材料股份有限公司 | Wear-resistant and high-temperature-resistant nylon composite material and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892946A (en) * | 2018-05-25 | 2018-11-27 | 东莞市众新材料科技有限公司 | A kind of wear-resisting high-temperature nylon composite material and preparation method |
| CN112480666A (en) * | 2020-12-18 | 2021-03-12 | 南京串晶科技有限公司 | Formula and preparation method of high-wear-resistance modified PA9T composite material |
| CN112500701A (en) * | 2020-12-30 | 2021-03-16 | 南京串晶科技有限公司 | High-wear-resistance modified PA6T composite material |
| CN113956656A (en) * | 2021-11-04 | 2022-01-21 | 河南海瑞祥科技有限公司 | Super-hydrophobic and oleophobic surface wear-resistant nylon composite material and preparation method thereof |
| CN113956656B (en) * | 2021-11-04 | 2023-09-22 | 河南海瑞祥科技有限公司 | Wear-resistant nylon composite material with super-hydrophobic and oleophobic surface and preparation method thereof |
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Application publication date: 20160608 |