KR101887354B1 - Polyketone mixed resin composition for cooling fan and the manufacturing method thereof - Google Patents

Abstract

The present invention relates to a polyketone mixed resin composition for a car cooling fan, and more particularly, to a polyketone mixed resin composition for a car cooling fan, which comprises 60 to 80 parts by weight of a polyketone; 5 to 15 parts by weight of a polyamide 6 resin; 1 to 20 parts by weight of MA-g-resin; 10 parts by weight or less of glass bubbles (GB); And 20 to 40 parts by weight of glass fiber (GF).

Description

TECHNICAL FIELD The present invention relates to a polyketone mixed resin composition for a cooling fan,

The present invention relates to a polyketone resin composition for a car cooling fan, and more particularly, to a polyketone resin composition for a car cooling fan. More particularly, the present invention relates to a polyketone resin composition, To a polyketone mixed resin composition for a cooling fan.

The car uses various heat exchangers to cool the refrigerant used in engines, missions and air conditioning systems. The heat exchangers use the air flow from the outside to the car to cool down. However, if the engine is running when the vehicle is stationary, there is little airflow and the heat exchanger performance is significantly reduced.

The component that complements these drawbacks is the 'Cooling Fan'. The cooling fan increases the amount of air flowing through the radiator and the air conditioning condenser, especially when the engine is idling or at low speeds.

Automotive cooling fans must have mechanical properties that can withstand long-term impacts such as rotation and vibration, and should have chemical resistance to prevent problems with external chemical elements such as calcium chloride aqueous solution sprayed on roads for winter snow removal. do.

On the other hand, the automobile industry is urgently required to develop new technologies for improving the fuel efficiency as well as improving the fuel efficiency as well as the motivation for development of automobile materials and parts due to the strengthening of international environmental regulations and fuel price regulation and the increase of energy resources prices.

In order to improve the fuel efficiency of automobile, the fuel efficiency improvement technology is largely improved engine / driveline efficiency, driving resistance reduction, light weight, and dual car weight reduction technology is low cost in comparison with other fuel efficiency improving technologies such as improvement of engine / It is expected to be the most promising method because it can obtain high efficiency fuel efficiency improvement result.

Research and development for reducing the weight of automobiles has been mainly carried out in accordance with the movement of the automobile lightweight as described above. In order to lighten the weight of the automobile, the conventional parts such as steel and non-metal have been replaced by plastic, engineering plastic, rubber, thermoplastic elastomer .

A resin reinforced with polyamide 66 / GF33 (hereinafter referred to as " polyamide 66 ") was mainly used as a resin composition satisfying these various characteristics. However, the polyamide 66 has a low resistance to calcium chloride, which is likely to cause problems in the winter road environment as described above. In order to solve the problem of the polyamide 66, a resin reinforced with a glass fiber reinforced with a polyamide 612 with a polyamide 612 to increase the chemical resistance to an aqueous solution of calcium chloride has been used.

It is known that reinforcing the polyamide 66 by using the polyamide 612 improves the chemical resistance of the calcium chloride. However, the polyamide 612 has a problem that it can not be used in a large amount due to its low heat resistance and high price.

On the other hand, the polyketone resin is a thermoplastic synthetic resin which is excellent in mechanical properties such as impact strength and molding characteristics and is usefully used as a molded article such as a food container and various parts, and its mechanical properties are classified into high performance plastics, A polyketone resin to which other desirable properties such as conductivity are imparted while maintaining inherent physical properties such as molding properties are widely used for various purposes. In addition, polyketone resin is a new material that is made by combining carbon monoxide and common monomer such as ethylene or propylene as an environmentally friendly material. In addition, it has superior price competitiveness compared to other automobile plastic materials, It has excellent advantages.

That is, when the polyketone resin is used as the base resin of the automobile radiator end tank, the cost of the resin consumed is considered to be significantly lower than that of using the polyamide 66 or polyamide 612 resin as the base resin.

However, when a molded article such as an automobile cooling fan is manufactured using a polyketone resin, gelation easily occurs during molding, resulting in poor processability and deterioration of the physical properties of the final product.

Therefore, this patent discloses an automobile cooling fan composition which is produced by mixing a polyketone resin with a resin such as polyamide, and eliminates the above problems and improves physical properties as a cooling fan.

Next, a brief description will be given of the prior arts existing in the field to which the technology of the present invention belongs, and the technical matters to be differentiated from the prior arts of the present invention will be described.

Korean Patent No. 10-1675828 discloses a polyketone composition having excellent mechanical properties. More specifically, a polyketone polymer and polyhexamethylene are blended in a weight ratio of 60:40 to 95: 5 by weight Describes a technique relating to a polyketone composition having improved bending properties when used as industrial plastics compared to conventional thermoplastic plastics.

Korean Patent No. 10-1655336 relates to a polyketone bumper bracket and more specifically to a bumper bracket using a blend including a polyketone, a polyamide 6 and a rubber to produce a bumper bracket, A technique relating to this excellent polyketone bumper bracket is described.

Korean Patent No. 10-1684883 relates to a polyketone resin composition for an automobile oil pan, and more particularly to a polyketone resin composition for an automobile oil pan, which comprises a linear alternating polyketone copolymer composed of carbon monoxide and at least one olefinically unsaturated hydrocarbon, Which is an oil pan of a polyketone automobile.

The above prior art documents have some similarities with the present invention in that they are techniques for improving the physical properties of a plastic composition for automobiles using polyketone as a base resin. However, as in the present invention, engineering of polyketone resins such as MA grafted resins The present invention differs from the above-mentioned prior art documents in that a resin composition containing plastic and a technique including a glass fiber and / or a glass bubble and a gel covering material as a reinforcing material are not disclosed.

Korean Patent No. 10-1675828 (published on November 14, 2016). Korean Patent No. 10-1655336 (Publication date 2016.09.07.) Korean Patent No. 10-1684883 (published December 12, 2016).

An object of the present invention is to provide a resin composition for an automobile cooling fan by alloying an engineering plastic such as a MA grafted resin into a polyketone resin and mixing a reinforcing material, And which has an effect of improving the chemical resistance, anti-antifreeze property, water absorbency and durability.

Also, an object of the present invention is to prevent gelation during molding of the resin composition by adding an anti-glare agent to the composition, to improve molding processability and to prevent deterioration of physical properties due to gelation.

A polyketone resin composition for a cooling fan according to an embodiment of the present invention comprises: a polyketone resin; Polyamide 6 resin; MA-g-MPPO resin; Glass bubble (GB); And a glass fiber (GF).

In one embodiment, the polyketone resin composition for cooling fans comprises 60 to 80 parts by weight of polyketone; 5 to 15 parts by weight of a polyamide 6 resin; 1 to 20 parts by weight of MA-g-resin, 10 to 10 wt% of glass bubble (GB) based on the weight of the mixture, 20 to 40 wt% of glass fiber (GF) .

Also, in one embodiment, the MA-g-resin may be MA-g-MPPO or a mixture of MA-g-MPPO and MA-g-PP containing 20-40 wt% MA-g-PP.

In one embodiment, the polyketone mixed resin composition for a cooling fan does not contain a cross-linking agent. Examples of the antigelling agent include ethylene resin, propylene resin, ethylene / propylene resin, ethylene / octene resin, ethylene vinyl acetate resin, ethylene / A polymer resin grafted with a compound having an acid anhydride group in at least one resin selected from the group consisting of styrene / ethylene / butadiene / styrene resin, styrene resin, styrene / acrylonitrile resin, acrylonitrile / butadiene / Examples of the polymer resin having a carboxyl group include polyacrylic acid and a polymer grafted with a compound having a carboxyl group in at least one resin selected from the group consisting of polyacrylic acid and styrene resin, styrene / acrylonitrile resin, acrylonitrile / butadiene / styrene resin Resin and one or more And the material is further added.

The anti-gelling agent may be added in an amount of 0.05 to 5 parts by weight based on 100 parts by weight of the polyketone resin.

In one embodiment of the present invention, the polyketone mixed resin composition further comprises at least one selected from a compatibilizer, a heat stabilizer, an antioxidant, and a reinforcing fiber.

In one embodiment, the polyketone resin composition for a cooling fan is characterized in that the glass fiber has a length of 8 mm or less.

According to another embodiment of the present invention, there is provided a method for producing a polyketone mixed resin composition for a cooling fan, comprising the steps of: (i) mixing polyketone resin, polyamide 6, MA-g-MPPO resin and glass fiber Obtaining a ketone / GF compound; Ii) obtaining a glass bubble master batch (GB M / B) in which a glass bubble (GB) is mixed with a polyamide 6 in a predetermined amount; And (iii) mixing the polyketone / GF compound and a glass bubble master batch (GB M / B) using a dry blending method.

In one embodiment of the present invention, the step of obtaining the polyketone / GF compound comprises the steps of: a) feeding a polyketone resin, polyamide 6 (PA6) and MA-g-resin simultaneously to an extruder, Obtaining a polyketone mixture; And b) adding a glass fiber to the mixture of step a), mixing and molding the mixture to prepare a polyketone / GF compound. The steps a) and b) may be performed at a temperature of 200 to 300 ° C.

In one embodiment of the present invention, the step of obtaining the glass bubble master batch (GB M / B) comprises the steps of: i) placing a polyamide 6 base in an extruder and heating; Ii) adding a glass bubble to the polyamide 6 in the step i) and mixing it uniformly in an extruder; And (iii) molding the mixed polyamide / glass bubble to prepare a glass bubble master batch (GB M / B).

The polyketone-containing composition for a car cooling fan according to the present invention can be produced by mixing a polyketone resin, a polyamide 6 resin and an MA-grafted MPPO resin to prepare a composition for a cooling fan, thereby reducing the production cost of the polyamide 66 or 612 resin It is possible to improve physical properties such as chemical resistance and the like as a cooling fan while lowering the specific gravity while reducing the specific gravity of the finally produced resin composition and using the glass bubble and the glass fiber to enhance the tensile strength and the like .

In addition, the composition contains gelation inhibitor to prevent gelation during molding, thereby improving workability and preventing deterioration of physical properties due to gelation.

Hereinafter, the present invention will be described in detail. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Unless otherwise defined in this invention, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

The polyketone resin-containing composition for a cooling fan according to the present invention comprises: a polyketone resin; Polyamide 6 resin; And a MA grafted resin (hereinafter referred to as MA-g-resin). The MA-g-resin means a resin in which maleic anhydride is grafted, and the maleic anhydride is covalently bonded to the resin.

Examples of such MA-g-resin include styrene-acrylonitrile copolymer (MA-g-SAN), polypropylene (MA-g-PP), polycarbonate -ABS (Acrylonitrile-Butadiene-Styrene), MA-g-PET (Polyethylene Terephthalate), MA-g-PS (Poly Styrene) and MA-g-MPPO (Modified Polyphenylene Oxide). The MPPO is mainly made of a polystyrene resin alloyed with PPO. When the MA-g-resin is added, the tensile strength and flexural strength of the polyketone resin composition are improved.

Among these MA-g-resins, MA-g-MPPO is preferred. More preferred is a mixture of MA-g-MPPO and MA-g-PP.

More specifically, the polyketone resin composition for a cooling fan comprises 60 to 80 parts by weight of a polyketone resin and 5 to 15 parts by weight of a polyamide 6 resin; And 1 to 20 parts by weight of MA-g-resin.

When the content of the polyketone resin mixed composition is within the above range, deterioration of physical properties such as strength reduction can be prevented while maximally utilizing the advantages of polyketone, such as chemical resistance and light weight.

The polyketone resin-containing composition for a cooling fan of the present invention can replace polyamide 66 resin, which is a conventional material used in automobile cooling fans. By using a polyketone resin as a base resin that is relatively inexpensive compared to polyamide 66 as a base resin, We can expect a reduction.

Meanwhile, in the present invention, by containing glass bubble (GB) in the polyketone resin-containing composition for a cooling fan, the effect of reducing the specific gravity and weight can be obtained.

The glass bubble (GB) may contain up to 10 wt% of the polyketone resin and the polyamide 6 resin, the MA-g-resin mixture, and if the glass bubble (GB) There may arise a problem that the physical properties are deteriorated.

Further, when glass bubble (GB) is used for the polyketone mixed resin composition for a cooling fan, the specific gravity is reduced, but the mechanical properties are lowered. Therefore, glass fiber (GF) , And the glass fiber is 20% by weight of the polyketone resin and the polyamide 6 resin, MA-g-resin mixture To 40 wt%.

The glass fiber (GF) having a length of 2.5 to 12.5 mm may be used, but it is preferable to use a glass fiber (GF) having a length of 8 mm or less. When a long glass fiber (LGF) having a length of 8 mm or more is used, the mechanical strength is improved as compared with the case of using a glass fiber (GF) having a length of 8 mm or less. On the other hand, In the process, long glass fiber (LGF) may be pushed to one side.

In addition, the polyketone resin composition for a cooling fan according to the present invention may contain an anti-glazing agent to prevent gelation which occurs when the polyketone is extruded or melted at a high temperature during injection molding.

As the antigelling agent, a substance such as a polymer resin in which a compound having at least one functional group of an acid anhydride group (-C = OOO = C-) and a carboxyl group (-COOH) is grafted is used.

Although the mechanism for suppressing gelation of these additives having functional groups is not clear, it is judged that they are mixed with polyketone polymer chains to inhibit gelation of the ketone.

Examples of the polymer resin having an acid anhydride group include ethylene resin, ethylene / propylene resin, ethylene / octene resin, ethylene / propylene / diene resin, styrene / ethylene / butadiene / styrene resin, ethylene resin, At least one resin selected from the group consisting of propylene resin, ethylene / octene resin, ethylene vinyl acetate resin, ethylene / propylene / diene resin, styrene / ethylene / butadiene / styrene resin, styrene resin, styrene acrylonitrile resin, acrylonitrile / butadiene / A compound having an acid anhydride group in the resin is grafted.

Examples of the compound containing the acid anhydride group include, but are not limited to, acetic anhydride, maleic anhydride, propionic anhydride, butyl acid anhydride, succinic anhydride, glutaric anhydride, phthalic anhydride and benzoic anhydride.

Examples of the polymer resin having a carboxyl group include a polymer grafted with a compound having a carboxyl group in at least one resin selected from the group consisting of polyacrylic acid and styrene resin, styrene / acrylonitrile resin and acrylonitrile / butadiene / styrene resin.

These antigelling agents may be added in advance to the polyketone resin before pelletization of the polyketone resin to form pellets. When the polyketone resin pellets not containing the antigelling agent are melted to be molded by extrusion or injection molding , May be added. At this time, the polyketone resin and the like should not contain a crosslinking agent.

The polyketone mixed resin composition for a cooling fan according to the present invention may further contain other additives such as talc, processing aid, heat stabilizer, antioxidant, impact modifier, compatibilizer, reinforcing fiber And the like, but the present invention is not limited thereto.

Hereinafter, preferred embodiments of the polyketone mixed resin composition for a cooling fan according to the present invention will be described in detail by way of examples. The terms or words used below should not be construed as limited to ordinary or dictionary meanings, and any technical equivalence of technical ideas which have substantially the same structure and effect as the technical idea is included in the technical scope.

According to another embodiment of the present invention, there is provided a method for producing a polyketone mixed resin composition for a cooling fan, wherein the polyketone mixed resin composition comprises a polyketone resin, a polyamide 6 resin, a MA- (GB M / B) in which a blend of polyamide / GF compound and glass bubble (GB) mixed with polyamide 6 is mixed by a dry blending method . At this time, the composition ratio of the polyketone mixed resin composition finally prepared is mixed in a ratio of 60 to 80 parts by weight of polyketone resin, 5 to 15 parts by weight of polyamide 6 (PA6) resin and 1 to 20 parts by weight of MA-g-resin , The glass fiber may be 20 to 40 wt% and the glass bubble may be 10 wt% or less with respect to the total weight of the mixed resin. At this time, if the content of the glass bubble is 0 wt%, the step of dry blending the glass bubble master batch is excluded.

The process for preparing the polyketone / GF compound comprises the steps of: a) mixing 60 to 80 parts by weight of a polyketone resin, 5 to 15 parts by weight of a polyamide 6 (PA6) resin and 1 to 20 parts by weight of an MA- The mixture is mixed with each other to obtain a mixture, and 20 to 40 wt% of glass fiber as a side additive is added to the mixture to form a mixture. The mixture is molded and cut to a proper size to prepare a recycled material / GF compound do.

The MA-g-resin may be MA-g-MPPO or may be a mixture of MA-g-MPPO and MA-g-PP mixed with 20-40 wt% of MA-g-PP.

On the other hand, the production method of the glass bubble master batch (GB M / B) includes: i) heating the polyamide 6 base in a mixer and heating; ii) adding a glass bubble to the polyamide 6 in the step i), and mixing them uniformly; And iii) molding the mixed polyamide / glass bubble to produce a glass bubble master batch (GB M / B).

Hereinafter, preferred embodiments of the polyketone resin composition for a cooling fan according to the present invention will be described in detail with reference to examples. The terms or words used below should not be construed as limited to ordinary or dictionary meanings, and any technical equivalence of technical ideas which have substantially the same structure and effect as the technical idea is included in the technical scope.

≪ Examples 1 to 9 >

1) Preparation of polyketone / GF compound

The polyketone mixed resin composition was prepared by blending thermoplastic polyketone, polyamide 6, MA-g-MPPO, MA-g-PP, glass fiber (GF) and lubricant as shown in Tables 1 and 3. The resin composition thus prepared was melted and extruded in a twin-screw extruder under the conditions of 250 캜 and L / D = 35, ø to produce pellets. The mixture prepared here was named polyketone / GF compound. The pellets thus produced were injection-molded into an ISO family mold at 250 ° C and 500 ton to prepare specimens for the measurement of physical properties.

2) Production of glass batch master batch (M / B)

The new polyamide 6 base was placed in an extruder and heated to 250 ° C while the glass bubbles were added to the heated polyamide 6 so that they were uniformly mixed with each other.

The mixed polyamide / glass bubbles were extruded by an extruder while being kept at 250 캜 and then cut to prepare a glass bubble master batch (M / B).

3) Production of polyketone mixed resin for cooling fan

The polyketone / GF compound and the glass bubble master batch were dry blended to prepare a polyketone mixed resin for a cooling fan.

≪ Comparative Example 1 &

100 g of polyamide 66 resin and 25 g of glass fiber (GF), to which 1 g of lubricant was added as an additive, were used in the same manner as is currently generally used for resin compositions used for automobile cooling fans and the like. The thus-prepared resin composition was melted and extruded in a twin-screw extruder at 260 캜, L / D = 35, ø, thereby producing pellets. The pellets thus produced were injection-molded into an ISO family mold at 250 ° C and 500 ton to prepare specimens for the measurement of physical properties.

≪ Comparative Examples 2 to 6 >

A polyketone resin composition was prepared by blending thermoplastic polyketone, polyamide 6, MA-g-MPPO, MA-g-PP, glass fiber (GF) and lubricant as shown in Tables 1 and 3. The thus-prepared resin composition was melted and extruded in a twin-screw extruder at 260 캜, L / D = 35, ø, thereby producing pellets. The pellets thus produced were injection-molded into an ISO family mold at 250 ° C and 500 ton to prepare specimens for the measurement of physical properties.

As the thermoplastic polyketone resin, M330A (manufactured by Hyosung Corporation) having a melting point of 220 캜 and a flowability of 240 g / m 2 and a density of 260 g / 10 min was used, and the polyamide 6 resin was polyamide 6 Toplan 1101 (manufactured by Hyosung) was used, and the polyamide 66 resin was Solvay's 27AE1. As the MA-g-MPPO resin, it is possible to use SP02 of modern Pisa as MA-g-PP resin, Irubond 100 of Euchem as glass bubble (GB), Glass bubble (S60HS) product of 3M and glass fiber (GF) Fusabond N416 grafted with maleic anhydride of Du Pont and having carboxyl group (-COOH) as the lubricant, CS-983 of Clariant, Licowax E of Clariant as the lubricant, and acid anhydride group (-C = And polyacrylic acid as a purification agent was used.

Test 1: Measurement of tensile strength, flexural strength and heat distortion temperature

Tensile strength, flexural strength, HDT heat distortion temperature and flow characteristics of the compositions prepared in Examples and Comparative Examples were measured, and the measurement method was as follows.

(1) Tensile strength (unit: MPa): The tensile strength was measured by the ISO 527 method.

(2) Flexural strength (unit: MPa): Flexural strength was measured by the ISO 178 method.

(3) Impact strength (unit: kJ / m ² ): Charpy Izod impact strength was measured according to ISO 179 with an impact strength specimen having a thickness of 3.2 mm.

(4) Thermal deformation temperature (unit: ° C): Measured under the load condition of 1.8 MPa by the ISO 75-1,2 method.

(5) Evaluation of flow characteristics (Melt Flow Rate, MI) and gelation characteristics: According to ISO 1133, the sample was retained at 240 ° C. for 4 minutes and measured at a weight of 2.16 kg. .

Table 2 below shows the tensile strength, flexural strength and HDT heat distortion temperature of the compositions of the compositions prepared in Examples 1 to 7 and Comparative Examples 1 to 3.

As shown in Table 2, the compositions (Examples 1 to 7 and Comparative Example 2) prepared using the polyketone resin as the base resin were superior to the compositions made of the polyamide 66 resin (Comparative Example 1, current article) Low specific gravity, and superior impact strength.

In addition, compositions prepared by blending polyamide 6 resin with MA-g-MPPO resin and / or MA-g-PP among compositions prepared using polyketone resin as a base resin (Examples 1 to 7, Comparative Examples 3) was superior in tensile strength and flexural strength to the composition prepared using only the polyketone resin (Comparative Example 2). That is, it was found that when the polyamide 6 resin and MA-g-MPPO resin and / or MA-g-PP were blended in the polyketone resin, tensile strength and flexural strength were increased.

The results of tests of Examples 2 and 3 show that when glass bubbles are included, the specific gravity is lowered, but also tensile strength, flexural strength and heat distortion temperature are lowered. Therefore, it is possible to reduce the specific gravity of the glass bubble, but when it is put in a large amount, the physical properties such as the tensile strength and the bending strength also decrease.

Examples 4 to 6 are examples of a composition obtained by mixing MA-g-MPPO and MA-g-PP in polyketone and polyamide 6 resin compositions. In Examples 4 and 5, tensile strength and flexural strength tend to be much higher than those of MA-g-MPPO alone or MA-g-PP alone. Particularly, this increase tendency is more pronounced when compared with Example 6, which is a resin composition in which only MA-g-PP is mixed without MA-g-MPPO. From these results, it can be seen that when MA-g-MPPO and MA-g-PP are mixed, the physical properties such as tensile strength are more prominent than when they are used alone.

Examples 8 and 9 and Comparative Examples 4 to 6 were obtained by measuring the effect of the addition of the antigelling agent according to the present invention. The melt index was measured at 240 ° C. and 265 ° C. The results are shown in the lower part of Table 3 .

According to the measurement results of the melt index, a polymer resin having at least one functional group grafted from the group consisting of an acid anhydride group (-C = OOO = C-) and a carboxyl group (-COOH) according to the present invention was used as a gelling agent In Examples 8 and 9, the melt index at 265 ° C is not significantly reduced compared to the melt index at 240 ° C, but the comparison with Surlyn or polyvinyl acetate that does not contain the anti-glaze agent of the present invention or has no anti- In Examples 4 to 6, the melt index can not be measured due to gelation or the melt index at 265 DEG C is significantly reduced compared with the melt index at 240 DEG C. As a result, it can be seen that the molding processability at high temperature is greatly improved when the antigelling agent of the present invention is included.

Test 2: Unbalance Test

Thermal Deformation Test

After a cooling fan was manufactured by injection molding using the compositions of Examples 1, 2 and 5 and Comparative Example 1, After unloading in an oven at 95 DEG C for 2 hours, an unbalance test was performed.

Complete immersion test

A cooling fan was manufactured by injection molding using the compositions of Examples 1, 2 and 5 and Comparative Example 1, and then the cooling fan was completely immersed in water for 48 hours and then the weight change and unbalance test were performed before and after immersion.

Semi-immersion test

Refers to a method in which a cooling fan is manufactured by injection molding using the compositions of Examples 1, 2, and 5 and Comparative Example 1, and then a cooling fan is submerged in 50% for 48 hours and then subjected to weight change and unbalance test before and after immersion .

For reference, the unbalance test is carried out by rotating the cooling fan at a speed of 1200 rpm and measuring the change in the rotation torque. The change in torque after the molding and after the immersion test is evaluated. It is a rule that the value measured by this method should be 30 g.mm or less.

Table 4 below shows the results of the weight change and unbalance test after the complete immersion test, and Table 5 shows the weight change and unbalance test results after the semi-immersion test.

As shown in Tables 4 and 5, as a result of the unbalance test, polyamide 6 resin and MA-g-MPPO resin were mixed based on a polyketone resin as compared with the existing articles using polyamide 66 resin of Comparative Example 1 A cooling fan made of the resin of Example 5 prepared by mixing the polyamide 6 resin and the MA-g-MPPO resin and the MA-g-PP resin on the basis of the composition of Examples 1 and 2 and the polyketone resin Torque values were significantly reduced.

In particular, the decrease in the torque value in the unbalance test after the semi-immersion test was significantly reduced. In Comparative Example 1, unbalanced after 250 g.mm was recorded, but in Examples 1, 2, and 5, the torque did not increase when rotating to 100 g.

In addition, weight change in the cooling fan using the compositions of Examples 1, 2, and 5 was smaller than that of the existing articles using the polyamide 66 resin of Comparative Example 1 in weight change.

That is, the cooling fan made of the composition containing the polyketone according to the present invention, as compared with the cooling fan made of the polyamide 66 resin, showed excellent unbalance test results.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the technical scope of the present invention should be defined by the following claims.

Claims (7)

A polyketone mixed resin composition for a cooling fan,
60 to 80 parts by weight of a polyketone resin; 5 to 15 parts by weight of a polyamide 6 resin; 1 to 20 parts by weight of MA-g-resin, glass bubbles (GB) of 10 wt% or less based on the total weight of the mixture, 20 to 40 wt% of glass fiber (GF) , ≪ / RTI &
A polyketone mixed resin composition for a cooling fan, characterized in that it comprises a polymer resin in which a compound having at least one functional group of an acid anhydride group (-C = OOO = C-) and a carboxyl group (-COOH) is grafted. The method according to claim 1,
Wherein the antigelling agent is added in an amount of 0.05 to 5 parts by weight based on 100 parts by weight of the polyketone resin. A method for producing a polyketone mixed resin composition for a cooling fan,
i) mixing polyketone resin, polyamide 6 resin, MA-g-resin, glass fiber (GF) and antigelling agent to obtain a polyketone / GF compound;
(ii) A polyamide 6 resin base is placed in a mixer, heated, and then a glass bubble is added to the heated polyamide 6 resin base to uniformly mix and form a glass bubble (GB) mixed with a certain amount of a polyamide 6 resin base Obtaining a master batch (GB M / B) and
(Iii) blending the glass bubble master batch (GB M / B) with the polyketone / GF compound using a dry blending method. Way. The method of claim 3,
Wherein the antigelling agent is a polymer resin in which a compound having at least one functional group selected from an acid anhydride group (-C = O = C-) and a carboxyl group (-COOH) is grafted. . The method of claim 3,
The anti-glazing agent may be at least one selected from the group consisting of ethylene resin, propylene resin, ethylene / propylene resin, ethylene / octene resin, ethylene vinyl acetate resin, ethylene / propylene / diene resin, styrene / ethylene / butadiene / styrene resin, styrene resin, styrene / acrylonitrile resin , A polymer resin grafted with a compound having an acid anhydride group in at least one resin selected from the group consisting of acrylonitrile / butadiene / styrene resin; A polymer resin grafted with a compound having a carboxyl group in at least one resin selected from the group consisting of polyacrylic acid and styrene resin, styrene / acrylonitrile resin, acrylonitrile / butadiene / styrene resin, and the like. Wherein the polyketone mixed resin composition for a cooling fan is a polyketone mixed resin composition. The method of claim 3,
In the mixed resin composition, the polyketone resin may include 60 to 80 parts by weight; 5 to 15 parts by weight of polyamide 6 resin; The glass bubble (GB) is 10 wt% or less based on the total weight of the mixture of the resins, and the glass fiber is 20 to 40 wt% based on the total weight of the mixture of the resins. By weight based on the total weight of the polyketone mixed resin composition. The method of claim 3,
Wherein the MA-g-resin is a mixture of MA-g-MPPO alone or MA-g-PP and MA-g-MPPO in a weight ratio of 20:80 to 40:60. Way.