KR20220112120A - Polyamide hybrid resin composition and article with low weight and high strength prepared therefrom - Google Patents

Abstract

The present invention relates to a polyamide hybrid resin composition and a lightweight and high-strength molded article prepared therefrom. The polyamide hybrid resin composition according to the present invention comprises an aliphatic polyamide resin, an aromatic polyamide resin, an inorganic filler, and a lubricant to improve heat resistance, moisture absorption resistance, and mechanical strength.

Description

Polyamide hybrid resin composition and lightweight and high-strength molded article manufactured therefrom

The present invention relates to a polyamide hybrid resin composition and to a lightweight and high-strength molded article manufactured therefrom, wherein heat resistance, moisture absorption resistance and tensile strength are improved by mixing an aliphatic polyamide resin and an aromatic polyamide resin, and lightweight including an inorganic filler Provided are a phosphorus polyamide hybrid resin composition and a molded article prepared therefrom.

As regulations on greenhouse gas emissions are strengthened, interest in improving fuel efficiency of transportation means is increasing. As part of improving fuel efficiency, attempts are being made to replace metals such as steel, which are heavier than 　strength, with aluminum or magnesium, but they have a problem of lowering price competitiveness.

Accordingly, various studies are being conducted on composite materials to which a thermoplastic resin is applied, which can have a high weight reduction rate and price competitiveness. ), polyoxymethylene (POM), and the like.

Among them, polyamide has excellent physical properties such as heat resistance, abrasion resistance, chemical resistance, and flame retardancy, as well as its low specific gravity, which is advantageous for light weight, and thus has high price competitiveness. In addition, it has good moldability and can be expected to improve physical properties by using a filler component such as glass fiber, so it is widely applied to automobile parts and the like.

However, there is a limit to realizing the level of mechanical strength that can replace the existing steel. Therefore, in order to satisfy the physical properties of the product including high mechanical strength, a compounding technology that adds various fillers is required.

On the other hand, a high content of glass fiber is used to improve product properties, but it lowers fluidity and has poor processability, making it difficult to mold through the extrusion process or injection process. It is a cause of deterioration of the quality of appearance and the like.

In this regard, Korean Patent Laid-Open No. 10-2007-0102027 (published on October 18, 2007) relates to a polyamide hybrid resin composition for an engine cover, and relates to a polyamide resin, chopped glass fiber, inorganic filler, and heat resistance. Disclosed is a resin composition comprising an agent and glass bubbles.

In addition, Republic of Korea Patent Publication No. 10-2018-0039481 (published on April 18, 2018) relates to a polyamide resin composition and a molded article prepared therefrom, and relates to two types of polyamides having a relative viscosity difference of 0.6 to 1.2. Disclosed is a resin composition comprising a mixture, an ABS copolymer, glass fibers and a mineral reinforcing agent.

In addition, US Patent Publication No. US 2013/0053483 (published on February 28, 2013) relates to a heat-resistant thermoplastic article comprising a polyhydroxy polymer, a polyamide resin, a polyhydroxy polymer, a co-stabilizer, a reinforcing agent and A thermoplastic article comprising a polymeric toughening agent is disclosed.

However, in the aforementioned prior documents, an inorganic filler is added to improve physical properties, but a surface defect phenomenon occurs due to an increase in the content of the inorganic filler, and it is difficult to improve lightness and mechanical properties at the same time. There is a problem in that mechanical properties are deteriorated due to moisture absorption.

Accordingly, an object of the present invention is to provide a polyamide hybrid resin composition capable of improving heat resistance, moisture absorption resistance and tensile strength by mixing an aliphatic polyamide resin and an aromatic polyamide resin and preventing surface defects.

Another object of the present invention is to provide a molded article having excellent appearance while being lightweight and high strength prepared from a polyamide hybrid resin composition comprising an aliphatic polyamide resin, an aromatic polyamide resin, an inorganic filler, and a lubricant.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

In order to solve the above-described technical problem, the present invention includes an aliphatic polyamide resin and an aromatic polyamide resin to prevent deterioration of mechanical properties due to a high water absorption rate of the polyamide resin, and provides an inorganic filler for light weight and ease of molding. It provides a polyamide hybrid resin composition comprising a lubricant for

Specifically, the polyamide hybrid resin composition according to the present invention can maximize tensile strength by adding 40 to 70% by weight of an aliphatic polyamide resin and 10 to 30% by weight of an aromatic polyamide resin, and a surface defect phenomenon of the final molded product can be prevented, and by including an inorganic filler and a lubricant in an amount of 17 to 20% by weight and 0.1 to 3% by weight, respectively, it is possible to provide ease of molding while keeping the weight of the final molded article light.

The polyamide hybrid resin composition according to the present invention may further include 0.1 to 2% by weight of a chain extender.

In this case, the chain extender may be at least one selected from the group consisting of isophthaloyl bis-caprolactam (IBC), adipoyl bis-caprolactam (ABC) and terphthaloyl bis-caprolactam (TBC). have.

The aliphatic polyamide resin may be one or more selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 610, and polyamide 410.

In addition, the aromatic polyamide resin may be one type from the group consisting of polyamide 6T, polyamide 6T/66, polyamide 6T/DT, polyamide 6I, polyamide 9T, polyamide 10T, and polymers thereof.

The inorganic filler reduces the weight of the polyamide resin and exhibits low deformation characteristics to prevent shrinkage of the molded article, and the inorganic filler is preferably included in an amount of 17 to 20% by weight.

The inorganic filler may be at least one selected from the group consisting of glass bubbles, talc, clay, titanium oxide, alumina, and silica.

The lubricant may be at least one selected from the group consisting of zinc stearate, copper stearate, chromium stearate, magnesium stearate, and nickel stearate.

In addition, the present invention is prepared from a polyamide hybrid resin composition comprising 40 to 70% by weight of an aliphatic polyamide resin, 10 to 30% by weight of an aromatic polyamide resin, 17 to 20% by weight of an inorganic filler, and 0.1 to 3% by weight of a lubricant Provides lightweight and high-strength molded products.

The polyamide hybrid resin composition may further include 0.1 to 2% by weight of a chain extender, and the chain extender is isophthaloyl bis-caprolactam (IBC), adipoyl bis-caprolactam (ABC) and turf. It may be at least one selected from the group consisting of taloyl bis-caprolactam (TBC).

The molded article may have a specific gravity of 0.904 ~ 0.942, a dry tensile strength of 59.87 ~ 74.82 MPa, and a wet tensile strength of 36.57 ~ 47.8 MPa.

According to the present invention, by mixing an aliphatic polyamide resin and an aromatic polyamide resin, deterioration of physical properties due to the high water absorption of the polyamide resin can be prevented, so that heat resistance, moisture absorption resistance and mechanical strength are improved as well as surface defects can have an excellent appearance by preventing

In addition, the polyamide hybrid resin composition according to the present invention can express light weight and low deformation characteristics by including an inorganic filler, and can improve flowability and releasability when manufacturing a molded article with the polyamide hybrid resin composition including a lubricant. have.

In addition, the polyamide hybrid resin composition according to the present invention may further include a chain extender, thereby further improving the mechanical strength of a molded article made of the polyamide hybrid resin composition.

Furthermore, the polyamide hybrid resin composition according to the present invention can be variously applied to a plastic component material having an excellent appearance while having light weight and high strength, thereby reducing power consumption due to weight reduction during operation.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a schematic diagram showing the ease of access to water of an aliphatic polyamide resin and an aromatic polyamide resin in a polyamide hybrid resin composition according to the present invention.
2 is a schematic diagram showing the reaction with a chain extender in the polyamide hybrid resin composition according to the present invention.
3 is a photograph showing a molded article prepared from the polyamide hybrid resin composition according to the present invention.
4 is a graph showing the change in tensile strength according to the content of the aromatic polyamide resin in a molded article prepared from the polyamide hybrid resin composition according to the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to refer to the same or similar components.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms, of course. These terms are only used to distinguish one component from other components, and unless otherwise stated, the first component may be the second component, of course.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

As used herein, the singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or various steps described in the specification, some of which components or some steps are It should be construed that it may not include, or may further include additional components or steps.

Hereinafter, the plastic resin composite according to the present invention and a method for manufacturing the plastic resin composite will be described.

The present invention is an aliphatic polyamide resin 40 to 70% by weight;

10 to 30% by weight of aromatic polyamide resin;

17-20 wt% inorganic filler; and

It provides a polyamide hybrid resin composition comprising; 0.1 to 3% by weight of a lubricant.

Polyamide resin is a crystalline resin and has been applied in all industrial fields such as automobiles, fashion, and electric/electronic industries due to its excellent mechanical properties, chemical resistance, and especially tough properties. However, the polyamide resin has a problem of being constrained to the use environment due to deterioration of physical properties such as mechanical properties in an environment with high relative humidity due to moisture absorption characteristics due to a high water absorption rate.

Inorganic fillers are added to the polyamide resin for the purpose of improving the deterioration of these properties, but inorganic materials are exposed on the surface of the product and the quality of the product deteriorates, and weld lines, sinks, flow masks, etc. This can happen.

Accordingly, the present invention can prevent deterioration of physical properties due to the high water absorption rate of the polyamide resin by mixing an aliphatic polyamide resin and an aromatic polyamide resin, so that moisture absorption resistance, heat resistance and mechanical strength are improved as well as surface defects can have an excellent appearance by preventing

In addition, the polyamide hybrid resin composition according to the present invention can express light weight and low deformation characteristics by including an inorganic filler, and can improve flowability and releasability when manufacturing a molded article with the polyamide hybrid resin composition including a lubricant. have.

In addition, the polyamide hybrid resin composition according to the present invention may further include a chain extender, thereby further improving the mechanical strength of a molded article made of the polyamide hybrid resin composition.

Furthermore, the polyamide hybrid resin composition according to the present invention can be variously applied to a plastic component material having an excellent appearance while having light weight and high strength, thereby reducing power consumption due to weight reduction during operation.

(A) aliphatic polyamide resin

In the polyamide hybrid resin composition according to the present invention, the aliphatic polyamide resin does not contain an aromatic ring in the molecular chain.

The aliphatic polyamide resin may be at least one selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 610, and polyamide 410.

In addition, the aliphatic polyamide resin is preferably included in an amount of 40 to 70% by weight of the total weight of the polyamide hybrid resin composition. When the amount of the aliphatic polyamide resin is less than 40% by weight, there is a problem in that fluidity is lowered, and when it exceeds 70% by weight, the content of the aromatic polyamide resin is lowered, and there is a problem in that mechanical strength and moisture absorption resistance are lowered. .

(B) Aromatic polyamide resin

Aromatic 　 polyamide 　 resin has higher melting temperature and high heat resistance than 　 aliphatic 　 polyamide 　 resin, and is added to improve heat resistance and moisture absorption resistance.

The aromatic polyamide resin may be one kind from the group consisting of polyamide 6T, polyamide 6T/66, polyamide 6T/DT, polyamide 6I, polyamide 9T, polyamide 10T, and polymers thereof.

The aromatic polyamide resin is preferably included in an amount of 10 to 30% by weight. When the aromatic polyamide resin is included in less than 10 wt% of the total weight of the polyamide hybrid resin composition, there is a problem in that the tensile strength of the molded article made of the polyamide hybrid resin is not improved, and when it exceeds 30 wt% There is a problem that the tensile strength is rather lowered and surface defects appear.

1 is a schematic diagram showing the ease of access to water of an aliphatic polyamide resin and an aromatic polyamide resin in a polyamide hybrid resin composition according to the present invention.

Referring to FIG. 1, the structural formula shown on the left represents the ease of access of water to nylon 6,6, and it can be seen that water access is easy to the amide functional group as indicated by the arrow, and the structural formula shown on the right shows the amide functional group It can be seen that the access of water is difficult due to the large size of the benzene structure.

(C) inorganic fillers

The inorganic filler included in the polyamide hybrid resin composition according to the present invention is light-weight and low-deformation properties, that is, added to prevent shrinkage, and is selected from the group consisting of glass bubbles, talc, clay, titanium oxide, alumina and silica. It may be one or more types, but a glass bubble that has the advantage of being able to be used in both painting and non-painting fields of molded products is suitable.

The inorganic filler reduces the weight of the polyamide hybrid resin and serves to prevent shrinkage of the molded article by expressing low deformation characteristics, and is preferably included in an amount of 17 to 20% by weight of the total weight of the polyamide hybrid resin composition. When the inorganic filler is included in an amount of less than 17% by weight, the weight reduction effect does not appear, and when it exceeds 20% by weight, the inorganic filler is not uniformly dispersed in the polyamide hybrid resin composition, so that an appearance problem may occur.

Moreover, although the average particle diameter of the said inorganic filler is not specifically limited, It is preferable that it is 0.01-5 micrometers. When the particle size of the inorganic filler is less than 0.01 μm, fluidity is lowered due to its small size, thereby adversely affecting the appearance, and when it exceeds 5 μm, there is a problem in that it is not uniformly dispersed in the polyamide hybrid resin composition. have.

(D) lubricant

The lubricant contained in the polyamide hybrid resin composition according to the present invention is to provide smooth fluidity during extrusion and injection processes, specifically, the screw of the injection machine and the raw material supply in the extruder are enhanced, the flowability of the resin in the mold is improved, and the It is added to enhance releasability.

In this case, it may be added together with the dendrimer, and by including the dendrimer, the inorganic filler is prevented from being exposed to the surface during the injection process, thereby preventing surface defects.

The lubricant may be at least one selected from the group consisting of zinc stearate, copper stearate, chromium stearate, magnesium stearate, and nickel stearate.

The lubricant is preferably included in an amount of 0.1 to 3% by weight of the total weight of the polyamide hybrid resin composition. By including the lubricant in the above-mentioned range, it is possible to reduce friction between the resin and the extruder to ensure uniform physical properties of the resin, and also to improve the heat resistance of the molded article, thereby preventing heat and / or humidity in the transport process of the molded article. It is possible to prevent the phenomenon that some components are eluted to the surface.

As described above, the polyamide hybrid resin composition according to the present invention includes an aliphatic polyamide resin, an aromatic polyamide resin, an inorganic filler, and a lubricant in the above-described ranges, thereby improving heat resistance, moisture absorption resistance and tensile strength.

In addition, in the present invention, the polyamide hybrid resin composition may further include 0.1 to 2% by weight of a chain extender.

The chain extender may be added to further increase the tensile strength of the molded article by linking the chains of the aliphatic polyamide resin and the aromatic polyamide resin, and the chain extender is a bis-N-acyl bislactam compound and a mixture thereof this can be used Preferred chain extenders include isophthaloyl bis-caprolactam (IBC), adipoyl bis-caprolactam (ABC), terphthaloyl bis-caprolactam (TBC) and mixtures thereof.

The chain extender acts based on the reaction between a polyamide chain having an acid end group or an amine end group and a chain extender having two reactive end groups that react with the amine end group or acid end group of the polyamide chain. That is, the chain extender compound, which is a bis-N-acyl bislactam compound, reacts stoichiometrically with the amine end groups of the polyamide chain. This means that one lactam end group of the bis-N-acyl bislactam compound reacts with one amine end group of the polyamide chain.

2 is a schematic diagram showing the reaction with a chain extender in the polyamide hybrid resin composition according to the present invention, wherein the chain terminal (acid or amine) of the polyamide and the amine or acid terminal of the polyamide react to form two polyamide chains It indicates that there is an effect of improving the tensile strength.

The chain extender preferably has a weight average molecular weight (Mw) in the range of 6500 to 7000, and the epoxy equivalent in the range of 270 to 300 g/mol.

In addition, the chain extender is preferably included in 0.1 to 2% by weight of the total weight of the polyamide hybrid resin composition. When the amount of the chain extender is less than 0.1% by weight, there is a problem in that the effect of improving the tensile strength due to the increase in molecular weight does not appear. There is a problem with this degradation.

In addition, the present invention is an aliphatic polyamide 40 to 70% by weight, aromatic polyamide 10 to 30% by weight, inorganic filler 17 to 20% by weight; And it provides a lightweight and high-strength molded article prepared from a polyamide hybrid resin composition comprising 0.1 to 3% by weight of a lubricant.

As described above, the polyamide hybrid resin composition according to the present invention includes an aliphatic polyamide resin, an aromatic polyamide resin, an inorganic filler, and a lubricant, thereby increasing the heat resistance, moisture absorption resistance and tensile strength of the manufactured molded article.

In addition, the polyamide hybrid resin composition may further include a chain extender in an amount of 0.1 to 2% by weight to further improve tensile strength, and the type of the chain extender is the same as described above.

The molded article prepared from the polyamide hybrid resin composition according to the present invention may have a specific gravity of 0.904 to 0.942, a dry tensile strength of 59.87 to 74.82 MPa, and a wet tensile strength of 36.57 to 47.8 MPa.

Hereinafter, the present invention will be described in more detail through examples. These embodiments are merely presented as examples in order to explain the present invention in more detail. Therefore, the present invention is not limited to these examples.

<Example>

Examples 1 to 5: Preparation of polyamide hybrid resin composition

A polyamide hybrid resin composition was prepared by mixing the components shown in Table 1 below.

Yes Aliphatic Polyamide Resin Aromatic polyamide resin inorganic filler lubricant chain extender total
(weight%) PA410 PA6 Polyamide 6T glass bubble Zinc Stearate ADR4370 Example 1 50% by weight - 30% by weight 17.5% by weight 2.5% by weight - 100 Example 2 50% by weight - 30% by weight 17.5% by weight 1.5% by weight 1% by weight 100 Example 3 - 70% by weight 10% by weight 17.5% by weight 1.5% by weight 1% by weight 100 Example 4 - 60% by weight 20% by weight 17.5% by weight 1.5% by weight 1% by weight 100 Example 5 - 50% by weight 30% by weight 17.5% by weight 1.5% by weight 1% by weight 100 Reference Example 1 - 40% by weight 40% by weight 17.5% by weight 1.5% by weight 1% by weight 100 Comparative Example 1 80% by weight - - 17.5% by weight 2.5% by weight - 100 Comparative Example 2 80% by weight - - 17.5% by weight 1.5% by weight 1% by weight 100 Comparative Example 3 - 80% by weight - 17.5% by weight 1.5% by weight 1% by weight 100

Examples 6 to 10: Preparation of lightweight and high-strength molded articles made of polyamide resin composition

The polyamide resin compositions of Examples 1 to 5 were put into a twin screw type extruder having L/D=40 and a diameter of 45 mm, and melted and extruded at a barrel temperature of 300° C. to prepare pellets. The manufactured pellets were dehumidified and dried at 100° C. for 6 to 8 hours, and then injected in an injection machine with a cylinder temperature of 320° C. and a mold temperature of 80° C. to prepare a molded article.

Reference Example 1

A polyamide resin composition was prepared by mixing the components shown in Table 1 above. Specifically, in Reference Example 1, the content of the aromatic polyamide resin was added to 40 wt%.

Comparative Examples 1 to 3

The polyamide resin composition of the components listed in Table 1 was put into a twin screw type extruder having L/D=40 and a diameter of 45 mm, and melted and extruded at a barrel temperature of 300° C. to prepare pellets. The manufactured pellets were dehumidified and dried at 100° C. for 6 to 8 hours, and then injected in an injection machine with a cylinder temperature of 320° C. and a mold temperature of 80° C. to prepare a molded article.

<Experimental example>

Experimental Example 1: Analysis of Tensile Strength and Elongation of Molded Articles Made of Polyamide Resin Composition

The tensile strength and elongation of the molded article prepared from the polyamide resin composition according to the present invention were analyzed.

Tensile strength is measured by ASTM D638 method, using a test device, U.T.M (manufacturer; Instron, model name; 4466), after pulling the cross head speed to 200 mm/min (1T), the point at which the specimen is cut was measured. Tensile strength was calculated as follows:

Tensile strength (kgf/㎟) = load value (kgf) / thickness (mm) x width (mm).

In addition, elongation was measured using a universal testing machine (UTM, LR30K, LLOYD Instruments) after the specimen was prepared in accordance with ASTM D882.

Yes importance Tensile strength (MPa) Elongation (%) deflation wet Example 6 0.904 65.79 40.32 - Example 7 0.915 74.83 47.80 - Comparative Example 1 0.926 60.7 32.62 - Comparative Example 2 0.9267 60.9 32.65 -

Referring to Table 2, Comparative Example 1 is a molded article composed of an aliphatic polyamide resin, glass bubbles, and zinc stearate as a lubricant. can

In Example 6, an aromatic polyamide resin is added to the composition of Comparative Example 1, and it can be seen that the tensile strength increases from 32.62 MPa to 40.32 MPa. In particular, Example 7 is an aromatic polyamide resin as well as a chain extender. It can be seen that the tensile strength is further improved as the tensile strength is increased to 47.8 MPa.

Experimental Example 2: Analysis of tensile strength of molded articles according to the content of aromatic polyamide resin

The tensile strength and surface change of the molded article according to the content of aromatic polyamide in the polyamide hybrid resin composition according to the present invention were analyzed, and the results are shown in Table 3, FIGS. 3 and 4 .

Yes importance Tensile strength (MPa) Elongation (%) deflation wet Example 8 0.935 59.87 36.57 3.3 2.85 Example 9 0.935 64.69 39.56 3.5 3.38 Example 10 0.942 68.37 41.33 3.43 3.5 Reference Example 1 0.949 67.88 39.75 3.4 3.53 Comparative Example 3 0.930 48.44 29.18 2.6 3.63

Referring to Table 3, Comparative Example 3 without the aromatic polyamide resin had dry tensile strength and wet tensile strength of 48.44 MPa and 29.18 MPa, respectively, and Example 8 containing the aromatic polyamide resin at 10 wt% Dry tensile strength and wet tensile strength were 59.87 MPa and 36.57 MPa, respectively, indicating that the dry tensile strength and wet tensile strength were improved when the aromatic polyamide resin was included.

In addition, Example 9 containing the aromatic polyamide resin at 20 wt% had dry tensile strength and wet tensile strength of 64.69 MPa and 39.56 MPa, respectively, and Example 10 containing the aromatic polyamide resin at 30 wt% was dry tensile strength. The strength and wet tensile strength were 68.37 MPa and 41.33 MPa, respectively, indicating that the tensile strength was improved as the content of the aromatic polyamide resin increased.

However, in Reference Example 1 containing 40 wt% of the aromatic polyamide resin, dry tensile strength and wet tensile strength were 67.88 MPa and 39.75 MPa, respectively, so that the tensile strength of Example 10 containing 30 wt% of the aromatic polyamide resin was higher than that of Example 10. is slightly lowered, and above all, there is a problem in that the surface defect phenomenon appears in the molded product.

In relation to this, Figure 3 is a photograph showing a molded article prepared from the polyamide hybrid resin composition according to the present invention.

As shown in Figure 3, it can be seen that the surface defect is improved as the content of the aromatic polyamide resin increases, and when the content of the aromatic polyamide resin exceeds 30 wt%, it can be seen that defects occur on the surface of the molded article. .

4 is a graph showing the change in tensile strength according to the content of the aromatic polyamide resin in the molded article prepared from the polyamide hybrid resin composition according to the present invention.

As shown in Figure 4, it can be seen that the tensile strength is improved as the content of the aromatic polyamide increases in the molded article prepared from the polyamide hybrid resin composition according to the present invention, and the content of the aromatic polyamide resin is added in an amount of 30 wt% It can be seen that the tensile strength is somewhat lowered when the aromatic polyamide resin is included in an amount of 40 wt % at the high point.

Therefore, it can be seen that the content of the aromatic polyamide resin in the polyamide hybrid resin composition according to the present invention is preferably included in an amount of 10 to 30 wt % in order to prevent a surface defect phenomenon of the molded article.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects according to the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

Claims (11)

40 to 70% by weight of an aliphatic polyamide resin;
10 to 30% by weight of aromatic polyamide resin;
17-20 wt% inorganic filler; and
A polyamide hybrid resin composition comprising: 0.1 to 3 wt% of a lubricant. According to claim 1,
The polyamide hybrid resin composition further comprises 0.1 to 2 wt% of a chain extender. 3. The method of claim 2,
The chain extender is at least one selected from the group consisting of isophthaloyl bis-caprolactam (IBC), adipoyl bis-caprolactam (ABC) and terphthaloyl bis-caprolactam (TBC). Polyamide hybrid resin composition . According to claim 1,
The aliphatic polyamide resin is at least one polyamide hybrid resin composition selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 610 and polyamide 410. According to claim 1,
The aromatic polyamide resin is one kind from the group consisting of polyamide 6T, polyamide 6T/66, polyamide 6T/DT, polyamide 6I, polyamide 9T, polyamide 10T, and polymers thereof. A polyamide hybrid resin composition. According to claim 1,
The inorganic filler is at least one selected from the group consisting of glass bubbles, talc, clay, titanium oxide, alumina, and silica. According to claim 1,
The lubricant is at least one selected from the group consisting of zinc stearate, copper stearate, chromium stearate, magnesium stearate, nickel stearate and dendrimer polyamide hybrid resin composition. 40 to 70% by weight of an aliphatic polyamide resin, 10 to 30% by weight of an aromatic polyamide resin, 17 to 20% by weight of an inorganic filler; And a lightweight and high-strength molded article prepared from a polyamide hybrid resin composition comprising 0.1 to 3% by weight of a lubricant. 9. The method of claim 8,
The polyamide hybrid resin composition is a lightweight and high-strength molded article further comprising 0.1 to 2% by weight of a chain extender. 10. The method of claim 9,
The chain extender is at least one selected from the group consisting of isophthaloyl bis-caprolactam (IBC), adipoyl bis-caprolactam (ABC) and terphthaloyl bis-caprolactam (TBC). 10. The method of claim 9,
The molded article is a lightweight and high-strength molded article having a specific gravity of 0.904 to 0.949, a dry tensile strength of 59.87 to 74.83 MPa, and a wet tensile strength of 36.57 to 47.8 MPa.

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