KR101751247B1 - Anti-abrasive Polyamide Composition - Google Patents
Anti-abrasive Polyamide Composition Download PDFInfo
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- KR101751247B1 KR101751247B1 KR1020150085012A KR20150085012A KR101751247B1 KR 101751247 B1 KR101751247 B1 KR 101751247B1 KR 1020150085012 A KR1020150085012 A KR 1020150085012A KR 20150085012 A KR20150085012 A KR 20150085012A KR 101751247 B1 KR101751247 B1 KR 101751247B1
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- South Korea
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- polyamide
- present
- weight
- parts
- abrasion resistance
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- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/041—Carbon nanotubes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- 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
- C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
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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)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a wear-resistant polyamide composition comprising a polyamide resin consisting of a polyamide 6,6 resin and a polyamide 6, a carbon nanotube, and a lubricant, and relates to a wear-resistant polyamide composition which imparts improved abrasion resistance and surface hardness, It is possible to prevent deterioration of the toughness which would otherwise occur depending on the material.
Description
The present invention relates to a novel polyamide resin composition which is easy to apply as a frictional wear part due to improvement in surface hardness and toughness (elongation) of a surface and improvement in frictional wear resistance.
Conventionally, nylon 6,6, an engineering plastic, has been used as a component conventionally used for parts requiring abrasion resistance and resistance to abrasion. These resins have advantages of easy injection workability and excellent mechanical properties. However, since the hardness of the surface is low, There is a lot of room for improvement in the long-term application or general application of products that require abrasion resistance due to lack of abrasion resistance. Super engineering plastic nylon 4,6 has the advantage of high surface hardness and excellent abrasion resistance, but it is very sensitive to moisture absorption, so the appearance of the product is poor and injection temperature is over 300 ℃. There are many inconveniences to use because it is low.
As described above, in general, a method of adding additives such as silicone resin and MoS 2 has been used in order to improve the performance of the polyamide resin. However, this tends to deteriorate toughness, which is inherent in the polyamide resin, And the range of use is limited due to the low surface hardness.
The present invention provides a novel polyamide composition which realizes superior abrasion resistance by improving surface hardness by complementing the weak points of the conventional polyamide resin composition, particularly conventional polyamide 4,6 and polyamide 6,6 will be.
Another object of the present invention is to provide a novel polyamide resin composition which further improves toughness (elongation) and realizes more excellent mechanical properties and further improved friction and wear characteristics.
Accordingly, the present invention is to provide a novel polyamide composition which prevents deterioration of toughness which is caused by imparting the above properties while imparting improved abrasion resistance and surface hardness.
The present invention relates to a wear resistant polyamide composition comprising a polyamide resin consisting of a polyamide 6,6 resin and a polyamide 6, a carbon nanotube and a lubricant.
The polyamide resin composition having improved abrasion resistance and abrasion resistance of the present invention has an effect of having excellent abrasion resistance by improving surface hardness of the surface.
The polyamide resin composition having improved abrasion resistance and abrasion resistance of the present invention has an effect of further improving the toughness (elongation), and further having excellent mechanical properties and further improved friction wear characteristics.
Therefore, the polyamide resin composition of the present invention having improved abrasion resistance and abrasion resistance has an effect of preventing abrasion and toughness, which are caused by imparting improved abrasion resistance and surface hardness, and imparting the above properties.
BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a polyamide resin composition having improved abrasion resistance and abrasion resistance of the present invention will be described in detail with reference to the accompanying drawings.
Here, unless otherwise defined, technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. In the following description, the gist of the present invention is unnecessarily blurred And a description of the known function and configuration will be omitted.
In order to solve the above problems, the present inventors have found that mixing the polyamide 6,6 resin, the polyamide 6, and the carbon nanotube with the lubricant basically improves the surface hardness of the surface and has excellent abrasion resistance Thus completing the present invention. In other words, it was found that the abrasion resistance was superior to that of the conventional polyamide 4,6, and the present invention was completed.
Further, the present inventors have found that the polyamide 6,6 and the carbon nanotubes can further improve the toughness, hardness, strength and wear resistance by further mixing the polyamide 6 with the polyamide 6,6 and the carbon nanotubes.
In addition, the present invention, in various embodiments of the present invention described above, prevents the localized carbonization phenomenon by adding a specific lubricant of the present invention and maintains the physical properties thereof, The present invention has been completed. Therefore, the present invention has the object of the present invention even when a lubricant other than the specific lubricant of the present invention is used, but in the case of using a specific lubricant of the present invention, the carbonization of the molded product by localized carbonization The present inventors have found that it is possible to realize a unique effect that the defect due to the presence of particles or the roughness of the surface are solved at the same time.
In a specific example of the present invention, 0.05 to 10 parts by weight of carbon nanotubes are contained relative to 100 parts by weight of a mixture of polyamide 6,6 and polyamide 6.
In another embodiment of the present invention, 0.05 to 10 parts by weight of carbon nanotubes and 0.01 to 3 parts by weight of a lubricant are contained relative to 100 parts by weight of a mixture of polyamide 6,6 and polyamide 6.
In the present invention, the mixing ratio of the polyamide 6,6 and the polyamide 6 is not particularly limited. However, in order to sufficiently achieve the desired effect of the present invention, 50 to 90% by weight of polyamide 6,6 and 10 to 50% %, Although it is not limited thereto. If mixed in the above range. For example, it has an advantage of improving the workability at the time of injection, improving the elongation rate, and using the polyamide 6,6 without deteriorating its heat resistance.
The polyamide 6,6 in the present invention is not particularly limited as far as it is conventionally used, but in order to achieve the object of the present invention, it is preferable to use a polyamide having a relative viscosity of 2.1 to 3.1 or a molecular weight of 10,000 to 30,000 g / mol, It is not. The polyamide 6 may have a relative viscosity of 2.7 to 3.3 or a molecular weight of 14,000 to 25,000 g / mol.
In the present invention, the carbon nanotubes are not particularly limited. For example, the carbon nanotubes may have a diameter of 10 to 50 탆 and have a nano-sized diameter. However, the present invention is not limited thereto. When used in the range of the above-mentioned range and in the above-mentioned range, the hardness is particularly increased and no particular problem occurs in the dispersibility.
In the present invention, a conventional lubricant may be used, and in particular, when an ethylene bisstearylamide is used, a unique effect of particularly improving the elongation can be achieved by improving hardness and mixing with other components . In the present invention, it is preferable that the content of the lubricant is 0.01 to 3 parts by weight, but the present invention is not limited thereto.
In the present invention, when 0.1 to 5 parts by weight of polytetrafluoroethylene is further added to 100 parts by weight of the polyamide resin of the composition of the present invention, the surface hardness and elongation characteristics are further increased, and the flexural modulus is further increased Good.
EXAMPLES Hereinafter, the present invention will be described in more detail with reference to the following examples. However, it should be understood that the following examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Unless otherwise specified, the weight unit is referred to as a unit.
100 parts by weight of polyamide consisting of 70% by weight of polyamide 6,6 (Rhodia Stabamid 27AE1 (Relative Viscosity 2.7)) and 30% by weight of polyamide 6 (Hyosung, 1021BRT (Relative Viscosity 3.0) (Diameter 31.6 mm, L / D 36), and 2 parts by weight of an ethylene-bis-stearyl amide (HI-LUBE) Respectively. The resulting mixture was molded at 275 DEG C using an injection molding machine to obtain an injection member (a test piece for mechanical property measurement conforming to the ISO measurement standard, a test piece for evaluation of abrasion wear with an outer diameter of 25.6 mm, an inner diameter of 20.0 mm and a height of 15 mm, 3 mm) were obtained. The results are shown in Table 1 below. ≪ tb > < TABLE >
In the present invention, dust abrasion wear was measured by using a Neoplus MPW110 with a force of 500 N for a 120 minute wear test at a speed of 50 mm / s. In this case, the ring was manufactured by Korea Engineering Plastics, KEPITAL TS-25A, and the application amount of dust was 0.3 g, and then the dynamic friction coefficient, the surface roughness and the noise holding time were measured. Metal friction wear characteristics were measured by using a Neoplus MPW110 stainless steel (S45C) ring for 4 hrs at speed (200 mm / s) and load (170 N).
The procedure of Example 1 was repeated, except that the mixing ratio of polyamide 6,6 and polyamide 6 was 60:40 wt% in Example 1. The results are shown in Table 1 below.
The same procedure as in Example 1 was carried out except that 2 parts by weight of polytetrafluoroethylene (Solvay Polymist XPP 511 (Particle Size D50 20 μm)) was further added in Example 1. The results are shown in Table 1 below.
[Comparative Example 1]
The test specimens were prepared with polyamide 6,6 only. The results are shown in Table 1 below.
[Comparative Example 2]
The procedure of Example 1 was repeated, except that 100% polyamide 6,6 was used instead of polyamide 6 in Example 1. The results are shown in Table 1 below.
[Comparative Example 3]
85 parts by weight of polyamide 6,6 and 15 parts by weight of polytetrafluoroethylene were used and pelletized under the same extrusion conditions as in Example 1 without using the carbon nanotubes and lubricant to prepare specimens. The results are shown in Table 1 below.
[Comparative Example 4]
The test specimens were fabricated from polyamide 4,6 only. The results are shown in Table 1 below.
As shown in Table 1, it can be seen that the composition of the present invention has relatively improved tensile strength and elongation at the same time, improved surface hardness, and greatly improved surface friction characteristics. Therefore, it can be easily applied to a frictional wear part.
It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.
Claims (7)
0.05 to 10 parts by weight of carbon nanotubes per 100 parts by weight of the polyamide resin,
0.1 to 5 parts by weight of polytetrafluoroethylene with respect to 100 parts by weight of the polyamide resin, and
And 0.01 to 3 parts by weight of ethylenebisstearylamide relative to 100 parts by weight of the polyamide resin.
Abrasion resistant polyamide composition.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150085012A KR101751247B1 (en) | 2015-06-16 | 2015-06-16 | Anti-abrasive Polyamide Composition |
| PCT/KR2016/005737 WO2016204426A1 (en) | 2015-06-16 | 2016-05-31 | Anti-abrasive and anti-friction polyamide composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150085012A KR101751247B1 (en) | 2015-06-16 | 2015-06-16 | Anti-abrasive Polyamide Composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20160148258A KR20160148258A (en) | 2016-12-26 |
| KR101751247B1 true KR101751247B1 (en) | 2017-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150085012A KR101751247B1 (en) | 2015-06-16 | 2015-06-16 | Anti-abrasive Polyamide Composition |
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| Country | Link |
|---|---|
| KR (1) | KR101751247B1 (en) |
| WO (1) | WO2016204426A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109251517A (en) * | 2017-07-14 | 2019-01-22 | 北京电子科技职业学院 | A kind of modified polyamide anti-abrasive material and preparation method thereof |
| CN110128820A (en) * | 2019-04-13 | 2019-08-16 | 上海瀚通汽车零部件有限公司 | A kind of timing chain guide rail and its preparation process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001261966A (en) * | 2000-03-21 | 2001-09-26 | Mitsubishi Rayon Co Ltd | Thermoplastic resin composition |
| JP2015516016A (en) * | 2012-05-07 | 2015-06-04 | ディーエスエム アイピー アセッツ ビー．ブイ． | Thermoplastic polymer composition and molded article produced therefrom |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5104601A (en) * | 1986-01-03 | 1992-04-14 | E. I. Du Pont De Nemours And Company | Process for producing a polyhexamethylene adipamide, caprolactam and polypropylene fiber |
| CN103328203B (en) * | 2010-10-29 | 2015-07-29 | 纳幕尔杜邦公司 | There is the heat ageing of improvement and the composite construction of interlayer bond strength |
| JP5972394B2 (en) * | 2011-12-23 | 2016-08-17 | エムス−パテント アクチエンゲゼルシャフト | Polyamide molding materials, their use, and moldings made from them |
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2015
- 2015-06-16 KR KR1020150085012A patent/KR101751247B1/en active IP Right Grant
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2016
- 2016-05-31 WO PCT/KR2016/005737 patent/WO2016204426A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001261966A (en) * | 2000-03-21 | 2001-09-26 | Mitsubishi Rayon Co Ltd | Thermoplastic resin composition |
| JP2015516016A (en) * | 2012-05-07 | 2015-06-04 | ディーエスエム アイピー アセッツ ビー．ブイ． | Thermoplastic polymer composition and molded article produced therefrom |
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| Publication number | Publication date |
|---|---|
| KR20160148258A (en) | 2016-12-26 |
| WO2016204426A1 (en) | 2016-12-22 |
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