KR101993824B1 - Polyamide Resin Composition - Google Patents
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- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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- C08L25/00—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 an aromatic carbocyclic ring; Compositions of derivatives of such polymers
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- C08L25/00—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 an aromatic carbocyclic ring; Compositions of derivatives of such polymers
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Abstract
The present invention relates to a polyamide resin composition, and more particularly, to a polyamide resin comprising a polyamide 6 resin and a polyamide 66 resin; 2.5 to 13.0 parts by weight of polyphenylmaleimide copolymer, based on 100 parts by weight of the polyamide resin; 37.0 to 100.0 parts by weight of glass fibers; 35.0 to 65.0 parts by weight of halogen-based polystyrene represented by Formula 1; 7.0 to 20.0 parts by weight of antimony trioxide; And a zinc compound containing 0.75 to 5.0 parts by weight of a zinc compound including zinc borate and zinc sulfide, and relates to a polyamide resin composition having improved flame resistance and tracking resistance.
Description
The present invention relates to a polyamide resin composition for use in electric and electronic parts and automotive electronic parts.
Flame retardant polyamide resins can be used as electrical and electronic parts, industrial products, and automotive electronic parts, and their range of use is wide.
In particular, high tracking resistance among flame retardancy and electrical characteristics is required to prevent ignition by sparks due to high voltage when used for electric and electronic parts.
In general, polyamide resins have excellent properties as engineering plastics in terms of rigidity, flexibility, wear resistance, solvent resistance, paintability, etc., and thus are widely used in various fields such as automobiles, electrical parts, and electronic parts. Flame retardants should be added when high flame retardancy of V-0 level is required at. In addition, as social awareness of fire safety increases and regulations become stronger, the necessity of flame retardation of automobiles, electrical and electronic parts is increasing. In order to solve the above problems, there is a method of adding a flame retardant and an auxiliary flame retardant. A flame retardant is generally achieved by adding a flame retardant containing a halogen group compound, a phosphorus compound, a phosphorus compound, and antimony which are inactive elements. do. In this case, a flame retardant mainly used to impart flame retardancy is mainly used by mixing a halogen-containing organic compound and an antimony-containing inorganic compound. However, in order to satisfy the flame retardancy of the V-0 level in the UL94 method, halogen and antimony-containing inorganic compounds should be added in excess, which satisfies flame retardancy but has a disadvantage of deteriorating tracking characteristics.
The tracking property is a property in which a molded article is exposed to an electrical discharge, heat is generated locally when a current flows due to a small amount of contaminants or moisture on the surface thereof, which causes carbonization of the material and leads to dielectric breakdown. Essential characteristics when used as a component
Polyamide resins are required to have high flame retardant properties, higher insulation properties, and better surface resistance of injection molded products under severe environments according to the trend toward miniaturization and thinning of electronic components for electric, industrial, and automotive parts. However, when an excessive amount of flame retardant and additives are added to impart flame retardant properties and other properties, tracking characteristics and surface properties tend to be further deteriorated.
Therefore, a polyamide resin composition having improved flowability and flame retardancy by using oxyethylene copolymer, Teflon, and stearic acid metal salt as additives in preparing a polyamide flame retardant resin has been proposed. In the Korean Patent Publication No. 1996-0022834, when the polyamide flame retardant resin is prepared, a rubber-modified aromatic vinyl-based resin, a brominated diphenylethane mixture, and antimony oxide are added to provide excellent flame retardancy and fluidity, and polyamide having improved impact strength. The resin composition is found in Korean Patent Publication No. 2010-0068982. In addition, the polyamide resin composition of the reinforced flame retardant polyamide resin composition, in particular, a polyamide resin composition having improved surface flowability by using polypropylene resin grafted with polyamide 6 resin and maleic hydride to the polyamide 66 resin composition as an additive It is in the publication 1998-0040718 publication
In addition, U.S. Patent No. 4,247,450 describes a polyamide composition composed of polyamide, flame retardant, 0.2-20% cadmium oxide, and optionally additional inorganic compounds such as zinc borate and having both fire and tracking resistance.
U.S. Patent No. 4,360,616 describes compositions for polyamides, melamines, melams, melaminecyanurates or melamine derivatives, chlorinated compounds and brominated compounds, zinc borate or zinc oxide, compositions for glass fibers.
However, it has been confirmed that the prior art does not satisfy the flame retardancy, tracking resistance and surface properties at the same time.
The present invention is to provide a polyamide resin composition that can exhibit excellent flame retardancy, tracking resistance and surface properties.
Accordingly, the present invention is a first preferred embodiment, a polyamide resin comprising a polyamide 6 resin and a polyamide 66 resin; 2.5 to 13.0 parts by weight of polyphenylmaleimide copolymer, based on 100 parts by weight of the polyamide resin; 37.0 to 100.0 parts by weight of glass fibers; 35.0 to 65.0 parts by weight of halogen-based polystyrene represented by Formula 1; 7.0 to 20.0 parts by weight of antimony trioxide; And it provides a polyamide resin composition comprising 0.75 to 5.0 parts by weight of a zinc compound containing zinc borate and zinc sulfide.
[Formula 1]
Wherein X is Br or Cl, n is an integer from 1 to 5, and m is an integer from 1500 to 2000.
The polyimide resin according to the embodiment may include 100 parts by weight of polyamide 66 resin and 30 to 66 parts by weight of polyamide 6 resin based on 100 parts by weight of the polyamide 66 resin.
The polyphenylmaleimide copolymer according to the embodiment may be a copolymer of an aromatic vinyl compound and phenylmaleimide.
The polyphenylmaleimide copolymer according to the embodiment may be polyphenylmaleimide styrene.
The mass ratio of zinc borate and zinc sulfide according to the embodiment may be 1: 0.1 to 1: 0.5.
The present invention also provides a molded article made of the polyamide resin composition as a second preferred embodiment.
The polyamide resin composition according to the present invention has excellent flame retardancy and tracking resistance even when the flame retardant content of the halogen-based styrene used as a flame retardant is reduced, and includes a copolymer of an aromatic vinyl compound and phenylmaleimide, thereby providing surface characteristics. It is excellent in injection molding and is advantageous. In addition, the polyamide resin composition is used in electrical and electronic parts of household and industrial and automotive parts that are processed by injection molding, and in particular may be used in connector parts and switch parts.
Hereinafter, the present invention will be described in more detail.
The present invention is a polyamide resin comprising a polyamide 6 resin and a polyamide 66 resin; 2.5 to 13.0 parts by weight of polyphenylmaleimide copolymer, based on 100 parts by weight of the polyamide resin; 37.0 to 100.0 parts by weight of glass fibers; 35.0 to 65.0 parts by weight of halogen-based polystyrene represented by Formula 1; 7.0 to 20.0 parts by weight of antimony trioxide; And it relates to a polyamide resin composition comprising 0.75 to 5.0 parts by weight of a zinc compound containing zinc borate and zinc sulfide.
1) polyamide resin
The polyamide resin that can be used in the present invention may be one containing polyamide 6 resin and polyamide 66 resin.
At this time, the content of the polyamide 6 resin and polyamide 66 resin contained in the polyamide resin may be from 30 to 66 parts by weight of polyamide 6 resin with respect to 100 parts by weight of polyamide 66 resin, the content of polyamide 6 resin 30 If less than parts by weight, the product of the polyamide resin composition of the present invention is excellent in rigidity, but the surface properties required for the final product is poor, there is a problem that can not be used as a product, if the content of polyamide 6 resin is more than 66 parts by weight There are disadvantages in that it is impossible to use the product due to the deterioration of properties such as heat deformation temperature, tensile strength, flexural strength and impact strength.
In the present invention, when polyamide 6 resin or polyamide 66 resin is used alone as the polyamide resin, the mechanical properties required in the final product, i.e., heat deformation temperature, tensile strength, flexural modulus and impact strength, are not exhibited. There is a problem in that the surface properties are deteriorated.
The polyamide 6 resin may be represented by the following formula (4), the relative viscosity is 2.5 to 3.5 (1g solution of polyamide 6 resin in 100 ml of 20 ℃ 96% sulfuric acid), the number average molecular weight may be 25,000 ~ 50,000. At this time, if the relative viscosity of the polyamide 6 resin is less than 2.5, the mechanical properties such as stiffness and impact strength are lowered and the surface defect of the molded article is caused.If it is more than 3.5, excessive frictional heat between the screw and the resin in the molding machine is generated and the resin is decomposed. Or high pressure is required for molding, causing excessive pressure on the molding machine and the mold, making injection molding difficult. In addition, if the number average molecular weight of the polyamide 6 resin is less than 25,000, mechanical properties such as stiffness and impact strength may be lowered and surface defects of the molded article may be caused. If the number average molecular weight is greater than 50,000, excessive frictional heat between the screw and the resin in the molding machine is generated. In addition, the resin is decomposed or a high pressure is required for the molding, which causes excessive pressure on the molding machine and the mold, making injection molding difficult.
[Formula 4]
?? -(NH- (CH 2 ) 5 -CO) n-
Where n is an integer from 500 to 15,000.
In addition, the polyamide 66 resin may be represented by the following formula (5), the relative viscosity may be 2.5 to 3.5 (1g solution of polyamide 66 resin in 100 ml of 20 ℃ 96% sulfuric acid), the number average molecular weight may be 25,000 ~ 50,000. . At this time, if the relative viscosity of the polyamide 66 resin is less than 2.5, the mechanical properties such as stiffness and impact strength are lowered, and the surface defect of the molded article is caused. If it exceeds 3.5, excessive frictional heat between the screw and the resin in the molding machine is generated and the resin is decomposed. Or high pressure is required for molding, causing excessive pressure on the molding machine and the mold, making injection molding difficult. In addition, when the number average molecular weight of the polyamide 66 resin is less than 2.5, the mechanical properties such as stiffness and impact strength are lowered and the surface defect of the molded article is caused.If the number is more than 3.5, excessive frictional heat between the screw and the resin in the molding machine is generated and the resin High pressure is required for disassembly or molding, causing excessive pressure on the molding machine and the mold, making injection molding difficult.
[Formula 5]
?? -(NH- (CH 2 ) 6 -HN-CO- (CH 2 ) 4 -CO) n-
Where n is an integer from 500 to 15,000.
2) polyphenylmaleimide copolymer
In the polyamide resin composition of the present invention, a polyphenylmaleimide copolymer may be included to improve the surface properties of the final product.
The polyphenylmaleimide copolymer may be a copolymer of phenylmaleimide and an aromatic vinyl compound, and the phenylmaleimide may be represented by Formula 2 below.
[Formula 2]
In the copolymer of phenylmaleimide and aromatic vinyl compound, the content of phenylmaleimide may be 40 to 60% by weight, and the content of aromatic vinyl compound may be 40 to 60% by weight.
If the content of the phenyl maleimide is less than 40% by weight, there is a problem of lowering heat resistance, poor polymerization degree, and poor impact resistance. If the content of the phenyl maleimide is higher than 60% by weight, the cost rises, it is uneconomical and the viscosity is too high, and kneading becomes difficult, and also the degree of polymerization There is a problem that is lowered.
If the content of the aromatic vinyl compound is less than 40% by weight, there is a problem of lowering heat resistance and poor impact resistance. If the content of the aromatic vinyl compound is higher than 60% by weight, the cost rises, resulting in uneconomical and high viscosity, making it difficult to knead.
The aromatic vinyl compound may be styrene, α-methylstyrene, methylstyrene, vinyl xylene, monochlorostyrene, dichlorostyrene, monobromostyrene, dibromostyrene, ρ-t-butylstyrene, ethylstyrene, vinylnaphthalene and ο- It may be one or two or more selected from methyl styrene. Preferably, the aromatic vinyl compound may be styrene.
On the other hand, the copolymer of phenylmaleimide and an aromatic vinyl compound is at least one of α, β-unsaturated carboxylic acid, α, β-unsaturated anhydride and derivatives thereof in consideration of compatibility with polyamide 6 resin and polyamide 66 resin. It may be grafted.
Examples of the α, β-unsaturated carboxylic acid, α, β-unsaturated anhydride and derivatives thereof include maleic anhydride, itaconic anhydride, citraconic anhydride, acrylic acid, methacrylic acid, allyl succinic acid, 2-dicarboxylic acid, Maleic acid, fumaric acid, diethyl maleate, dimethyl maleate, maleic anhydride, itaconic anhydride, sicconic anhydride, allyl succinic anhydride, and the like, of which maleic anhydride is particularly preferred.
The content of grafting at least one of α, β-unsaturated carboxylic acid, α, β-unsaturated anhydride and derivatives thereof may be 1 to 5 parts by weight based on 100 parts by weight of a copolymer of phenylmaleimide and an aromatic vinyl compound. If the content to be grafted is less than 1 part by weight, the compatibility with polyamide 6 resin or polyamide 66 resin is lowered, and impact resistance and rigidity are lowered. If it is more than 5 parts by weight, polyamide 6 resin or polyamide 66 Excellent compatibility with resins, but rapid viscosity increase causes kneading problems, and there is a lot of gas generated when molding the final polyamide resin composition, which may cause problems such as flow marks and silver baths on the surface of injection molded products. have.
The copolymer of the phenylmaleimide and the aromatic vinyl compound may have a number average molecular weight of 80,000 to 200,000. When the number average molecular weight is less than 80,000, the mechanical properties such as stiffness and impact strength are insignificant, and when the number average molecular weight is less than 200,000, The viscosity is too high, there is a problem that the kneading is not performed smoothly.
The copolymer of the phenylmaleimide and the aromatic vinyl compound may have a content of 2.5 to 13.0 parts by weight based on 100 parts by weight of the polyamide resin, and if the content is less than 2.5 parts by weight, there is no surface improvement effect. Since the viscosity is too high and kneading is not performed smoothly, there is a problem that the mechanical properties of the product made of the polyamide resin composition of the present invention is lowered.
In the present invention, the copolymer of phenylmaleimide and an aromatic vinyl compound may be polyphenylmaleimide styrene copolymerized with phenylmaleimide and styrene, and the polyphenylmaleimide styrene may be grafted with maleic anhydride.
3) glass fiber
In the polyamide resin composition of the present invention, in order to improve mechanical properties such as tensile strength, flexural strength, flexural modulus, and heat resistance such as heat deformation temperature, the fibrous filler may include glass fiber.
The average length of the glass fibers as described above is usually in the range of 0.1 to 20 mm, preferably 0.3 to 6 mm, and the aspect ratio representing L (average length of the fiber) / D (average outer diameter of the fiber) is usually 10 to 10 mm. 5000, preferably glass fibers in the range of 2000 to 3000 can be used.
The glass fiber may be used by treating with a silane coupling agent or a titanium coupling agent.
The polyamide resin composition of the present invention requires a tensile strength of 1200 ~ 2000 kg / ㎠, a bending strength of 1800 ~ 3000kg / ㎠ level in order to prevent cracking during molding, assembly process and use, such tensile strength, bending To reinforce the strength, the glass fiber content in the polyamide resin composition may be 37.0 to 100.0 parts by weight based on 100 parts by weight of the polyamide resin. If the content of the glass fiber is less than 37.0 parts by weight, the rigid reinforcing effect is insignificant, the tensile strength is less than 1200 kg / ㎠, the bending strength is less than 1800 kg / ㎠, cracks, cracks, etc. occurs when assembling and using the molded product, If it is more than 100.0 parts by weight, the glass fiber is expressed on the surface of the product made of the polyamide resin composition of the present invention, so that the surface appearance is not good, there is a problem inferior in commerciality.
4) Halogenated Polystyrene
In the polyamide resin composition of the present invention, in order to improve the flame retardant properties, it may include a halogen-based polystyrene represented by the formula (1), wherein the halogen-based polystyrene means a polystyrene containing a halogen element. That is, the halogen-based polystyrene may function as a flame retardant.
[Formula 1]
Wherein X is Br or Cl, n is an integer from 1 to 5, and m is an integer from 1500 to 2000.
In the polyamide resin composition according to the present invention, the content of the halogen-based polystyrene may be 35.0 to 65.0 parts by weight based on 100 parts by weight of polyamide resin, the flame retardancy is lowered if the content of the halogen-based polystyrene is less than 35.0 parts by weight, If it is more than 65.0 parts by weight, the tensile strength, flexural strength, etc. are lowered, and there is a problem that breakage, cracking, or the like of the molded article made of the polyamide resin composition occurs due to external impact.
The halogen-based polystyrene represented by Chemical Formula 2 may be brominated polystyrene or chlorinated polystyrene.
The brominated polystyrene may be selected from polydibromostyrene, polytribromostyrene, polypentabromostyrene, and polytribromoα-methylstyrene, and the brominated polystyrene may be brominated polystyrene or polyα-methylstyrene, It can be prepared by polymerizing brominated styrene or brominated α-methylstyrene. Moreover, you may copolymerize styrene bromide and olefin which has an epoxy group, or graft copolymerization of unsaturated carboxylic acid or its derivative (s).
In addition, the bromine content in the brominated polystyrene may be 50 to 80% by weight relative to the total brominated polystyrene, and if the bromine content is less than 50% by weight, the flame retardancy is lowered. There is no
Antimony trioxide
In the polyamide resin composition of the present invention, antimony trioxide may be included as a flame retardant adjuvant to further improve the flame retardant properties of the halogen-based polystyrene.
In general, antimony trioxide can be used to enhance the flame retardant effect of the flame retardant. The antimony trioxide may not exhibit flame retardant properties when used alone, but may exhibit synergistic effects when used with halogen-based flame retardants, resulting in better flame retardant properties than the flame retardant effects of halogen-based flame retardants. When halogen-based flame retardants are added in order to impart flame retardancy to the polyamide resin composition, when the amount of halogen-based flame retardant is added, the concentration of halogen is increased, which may lower the mechanical properties of the resin, thereby further improving the flame retardant properties of the halogen-based flame retardant. The use of antimony trioxide can improve the flame retardant properties of halogen-based flame retardants without reducing the mechanical properties of the resin due to the increase in halogen concentration.
Therefore, the polyamide resin composition of the present invention includes antimony trioxide, and the content of the antimony trioxide may be 7.0 to 20.0 parts by weight based on 100 parts by weight of the polyamide resin. If the content of the antimony trioxide is less than 7.0 parts by weight of the flame retardant expression effect is insignificant, V-0 grade of flame retardancy is not expressed at 1 / 32inch thickness, when exceeding 20.0 parts by weight of the polyamide resin composition prepared with a decrease in mechanical properties Problems such as breakage or cracking of the formed molding may occur.
Zinc compound
In the polyamide resin composition of the present invention, a zinc compound containing zinc borate and zinc sulfide may be included, wherein the zinc borate has a stable form under processing conditions, that is, a characteristic that the volatiles are volatilized at a minimum at a forming temperature. To satisfy, may be represented by the formula (3).
[Formula 3]
(ZnO) X (B 2 O 3 ) Y (H 2 O) Z
Here, X is an integer of 2-4, Y is an integer of 1-3, Z is an integer of 0-5.
Specifically, the zinc borate is (ZnO) 2 (B 2 O 3 ) 3 (H 2 O) 3.5, (ZnO) 4 (B 2 O 3 ) 1 (H 2 O) 1, (ZnO) 2 (B 2 O 3 ) 3 (H 2 O) 0 and mixtures thereof may be selected.
In the present invention, the zinc compound containing zinc borate and zinc sulfide may be 0.75 to 5.0 parts by weight with respect to 100 parts by weight of polyamide resin, and if the content of the zinc compound is less than 0.75 parts by weight, flame retardancy and tracking resistance When the amount is lower than 5.0 parts by weight, the mechanical properties are lowered, and the color change of the zinc compound deteriorates the color stability of the final product and causes color change when the product is used for a long time.
On the other hand, zinc sulfide is more preferable to play a role of stabilizing the color of the injection molded article as well as no deterioration of tracking resistance and mechanical properties.
In the zinc compound according to the present invention, the zinc borate and zinc sulfide (ZnS) may have a mass ratio of 1: 0.1 to 1: 0.5, preferably 1: 0.2 to 1: 0.3, and the mass ratio of zinc borate and zinc sulfide is Within this range, it is possible to stabilize the color of the injection molding as well as to prevent deterioration of the tracking resistance and mechanical properties.
7) additive
The polyamide resin composition of the present invention may optionally contain additional additives such as other polymerizers, impact modifiers, ultraviolet stabilizers, heat stabilizers, antioxidants, processing aids, lubricants and / or colorants (dyes, pigments, carbon blacks, etc.). It may include a colorant comprising a.
The polyamide resin composition according to the present invention can be prepared by melting and blending the components as described above using any known method.
That is, the polyamide resin composition may be prepared after uniformly mixing the components as described above by applying a melt-mixer, for example, a uniaxial or twin screw extruder, a blender, a kneader, a mixer, or the like.
Some of the components may also be mixed in a melt-mixer, followed by further melting and mixing until the rest of the components are added and homogeneous to produce a polyamide resin composition.
The polyamide resin composition according to the present invention has excellent flame retardancy and tracking resistance even when the flame retardant content is reduced by using a halogen compound, an antimony compound, and a zinc-based compound, and includes a copolymer of an aromatic vinyl compound and phenylmaleimide. Therefore, the surface characteristics are excellent, which is advantageous for injection molding. The resin is used in electrical and electronic parts for home and industrial and automotive parts that are processed by injection molding, and in particular, it can be used for connector parts and switch parts.
Hereinafter, the present invention will be described in more detail in the following examples. However, the following examples are merely to illustrate the invention, but the content of the present invention is not limited by the following examples.
Example 1
100 parts by weight of polyamide resin including 100 parts by weight of polyamide 66 resin having a relative viscosity of 2.65 and 30 parts by weight of polyamide 6 resin having a relative viscosity of 3.3 as a primary raw material inlet using a twin screw extruder heated at 220 ° C to 280 ° C. 8 parts by weight of polyphenylmaleimide copolymer, 2.5 parts by weight of zinc compound consisting of 1: 0.15 of zinc borate and zinc sulfide, and 0.5 parts by weight of heat-resistant agent (Iganox 1010, Shiba-Gaiji Co., Ltd.) at the front of the extruder. Into the primary inlet, 50 parts by weight of brominated styrenic flame retardant, 15 parts by weight of antimony trioxide as a flame retardant aid into the secondary inlet located in the middle of the extruder through the side feeder, and 75 parts by weight of glass fiber through the side feeder to the end of the extruder. While injecting into a third inlet located in the? Polyamide resin composition was prepared through a hot melt kneading process.
Example 2 Example 9
As shown in Table 1, except that only the content of the polyphenylmaleimide copolymer, zinc compound composed of a combination of zinc borate and zinc sulfide with a ratio of 1: 0.15, zinc bromide-based flame retardant, antimony trioxide and glass fiber was changed. , The polyamide resin composition was prepared in the same manner as in Example 1.
Comparative Example 1 Comparative Example 8
As shown in Table 2, except that only the content of the polyphenylmaleimide copolymer, zinc compound composed of a combination of zinc borate and zinc sulfide with a ratio of 1: 0.15, zinc bromide flame retardant, antimony trioxide and glass fiber was changed. , The polyamide resin composition was prepared in the same manner as in Example 1.
The polyamide resin compositions prepared in Examples and Comparative Examples were dried using a dehumidifying dryer at 100 ° C. for 5 hours, and then evaluated for ASTM standard specimens, flame resistance and tracking resistance using a screw-type injection machine heated to 260 ° C. to 280 ° C. After the test pieces were prepared, the physical properties were evaluated according to the following evaluation method, and the results are shown in Tables 3 and 4.
(Assessment Methods)
1) Tensile strength: In accordance with ASTM D638, a dumbbell-type test piece of 3.2 mm thickness was measured at room temperature using a universal testing machine.
2) Flexural Strength: According to ASTM D790, a 3.2 mm thick rectangular test piece was measured at room temperature using a universal testing machine.
3) Flame retardancy: According to the flame retardance measuring method in UL94, a 1/32 inch thick bar test piece was measured by a vertical combustion measurement method using a flammability measuring instrument.
(The degree of flame retardancy is indicated by the grade of V-0 ~ V-2, V-0 shows the best flame retardancy and V-2 shows the poor flame retardancy. Generally, the flame retardant material of plastic molded products is V-0 grade. It means the material having.)
4) Tracking resistance: By dropping 0.1% ammonium chloride electrolyte solution on the surface of 3mm thick specimen every 30 seconds between two electrodes by IEC 60112 (Solution A) method, tracking (carbonization) will not occur. When the voltage was measured
5) Surface characteristics: It shows the surface of molded product when visually judged. A: Good B: Bad
Expressed
(Volts)
(Volts)
* Surface characteristics: It shows the surface of the molded product when visually judged. A: Good B: Bad
Expressed.
As described in detail above, the polyamide resin composition according to the present invention comprising polyphenyl maleimide copolymer, glass fiber as an inorganic reinforcing material, halogenated polystyrene, antimony trioxide, and zinc compound in an appropriate content using a polyamide resin as a basic resin. It can be seen that exhibits excellent tracking characteristics, flame retardancy, and surface properties.
Claims (6)
Per 100 parts by weight of the polyamide resin,
5 to 8 parts by weight of polyphenylmaleimide copolymer;
40 to 95 parts by weight of glass fiber;
40 to 50 parts by weight of halogen-based polystyrene represented by Formula 1;
15 to 18 parts by weight of antimony trioxide; And
Polyamide resin composition comprising 2.5 to 3 parts by weight of a zinc compound containing zinc borate and zinc sulfide.
[Formula 1]
Wherein X is Br or Cl, n is an integer from 1 to 5, and m is an integer from 1500 to 2000.
The polyamide resin is a polyamide resin composition, characterized in that it comprises 30 to 66 parts by weight of polyamide 6 resin with respect to 100 parts by weight of polyamide 66 resin and 100 parts by weight of the polyamide 66 resin.
The polyphenyl maleimide copolymer is a polyamide resin composition, characterized in that the copolymer of an aromatic vinyl compound and phenyl maleimide.
The polyphenyl maleimide copolymer is polyphenyl maleimide styrene, characterized in that the polyamide resin composition.
The mass ratio of zinc borate and zinc sulfide is 1: 0.1 to 1: 0.5 polyamide resin composition characterized in that.
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| KR1020120156521A KR101993824B1 (en) | 2012-12-28 | 2012-12-28 | Polyamide Resin Composition |
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| KR1020120156521A KR101993824B1 (en) | 2012-12-28 | 2012-12-28 | Polyamide Resin Composition |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029512A1 (en) * | 1996-12-27 | 1998-07-09 | Unitika Ltd. | Flame-retardant polyamide resin composition |
| KR100658450B1 (en) * | 2001-09-19 | 2006-12-15 | 주식회사 코오롱 | Polyamide resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1006347C2 (en) * | 1997-06-18 | 1998-12-21 | Dsm Nv | Flame retardant polymer composition. |
| DE19904698A1 (en) * | 1999-02-05 | 2000-08-10 | Basf Ag | Flame retardant molding compounds |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998029512A1 (en) * | 1996-12-27 | 1998-07-09 | Unitika Ltd. | Flame-retardant polyamide resin composition |
| KR100658450B1 (en) * | 2001-09-19 | 2006-12-15 | 주식회사 코오롱 | Polyamide resin composition |
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