KR101684895B1 - Polyketone plastic stock shape - Google Patents

Abstract

The present invention relates to a plastic sheet material for producing a plastic gear, which is characterized by a lubricant additive and a reinforcing agent mixed in a polyketone copolymer, and is excellent in dimensional stability, abrasion resistance and impact resistance.

Description

{Polyketone plastic stock shape}

The present invention relates to a polyketone blend composition for a plastic plate, and more particularly, to a polyketone blend composition in which a lubricant additive and a reinforcing agent are mixed with a polyketone copolymer to reduce friction coefficient and improve mechanical strength and hardness. The present invention relates to a polyketone blend composition for a plastic sheet material useful in the following.

Plastic gears are lighter in weight than metal gears, have lower moment of inertia, have less noise during operation than metal gears, have a lower unit price, and can be designed to include various functions needed for assembly. Plastic materials are also very resistant to corrosion compared to metals.

The above-mentioned plastic gear has been positioned as a core component replacing existing metal gears in various application fields. Also, the range of use of plastic gears is also becoming more difficult and high-power Power transmission devices.

The originally used plastic gears were simple nylon and acetal gears that carried small loads at low speeds. However, as the advantages of using thermoplastic gears have become clearer recently, new high performance materials have been introduced and plastic gears have begun to be used for more demanding applications In particular, by adding a reinforcing agent and an internal lubricant, the application range is further expanded to various fields.

Although the plastic gear described above is produced by injection molding of a thermoplastic resin, problems such as side deviation, pitch defect, and shape defect may occur due to a considerable influence on the shrinkage rate of the resin due to filling pressure, melting temperature and material at the time of injection.

In order to solve such a problem of injection molding, a method of forming a blank by cutting a gear or a bearing having a desired size and a desired shape from a plastic plate is proposed.

Korean Patent Publication No. 10-1086028 discloses a method of producing a particulate carbon black in a molten plastic material selected from the group consisting of polyethylene (PE), polyacetal (POM), polyurethane, and nylon at a weight ratio of 90 to 110: A step of solidifying the mixed plastic composition at a temperature corresponding to the gear thickness in a plate form at a room temperature and a step of forming a gear of a required size in a solidified plastic plate by blanking, And a method for producing the same.

The above-described method can mass-produce gears of a desired type, which can lower the production cost and can solve problems such as deviation, pitch defect, shape defect, and the like caused in injection molding.

However, the plastic plate material used in the above method is selected from polyethylene (PE), polyacetal (POM), polyurethane and nylon, and is not satisfactory in properties such as numerical stability, abrasion resistance and impact resistance, The gears and the bearings have a problem that noise is generated severely during operation.

Korean Patent No. 1004453540000 Korean Patent No. 1008108650000

In order to solve the above problems, it is an object of the present invention to provide a plastic plate material in which a lubricant additive and a reinforcing agent are blended in a polyketone copolymer.

It is another object of the present invention to provide a method of manufacturing the above-mentioned plastic plate material.

Another object of the present invention is to provide a method of manufacturing a plastic gear by blanking the plastic plate material manufactured by the above method.

In order to achieve the above technical object, the present invention provides a polyketone blend composition comprising a polyketone copolymer composed of a repeating unit represented by the following general formulas (1) and (2) mixed with a wear resistance agent Provides plastic sheet material as a means for solving the problems.

- (CH2CH2-CO) x- (1)

- (CH2CH (CH3) -CO) y- (2)

(x and y are mole% of each of the general formulas (1) and (2) in the polymer and y / x is 0.03 to 0.3)

The wear-resistant agent is characterized by being 0.1 to 15 parts by weight based on 100 parts by weight of the polyketone copolymer. The present invention also provides a catalyst composition comprising a palladium compound, an acid having a pKa value of 6 or less, and a bidentate compound of phosphorus in order to more effectively solve the above problems. Preparing a mixed solvent comprising methanol and water; Adding carbon monoxide, ethylene, and propene in the presence of the catalyst composition and a mixed solvent, and conducting polymerization at two stages of polymerization temperature of 80 占 폚 and 84 占 폚 to prepare a linear terpolymer; Removing the remaining catalyst composition from the prepared linear terpolymer with a solvent to obtain a polyketone copolymer; Mixing a lubricant additive and a reinforcing agent in the prepared polyketone copolymer; And a step of coagulating the polyketone copolymer mixed with the lubricant additive and the reinforcing agent in a plate form as another means for solving the problem.

The plastic plate material of the present invention can easily produce a desired type of plastic gear by blanking processing, thereby lowering the production cost.

Further, the polyketone blending composition used in the present invention can produce gears having improved dimensional stability, mechanical properties, and wear resistance, thereby improving the durability and reducing the generation of noise due to rotation of gears.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a process for producing a plastic gear through blanking of a plastic sheet material according to the present invention. Fig.
2 is a schematic view of a thrust washer test apparatus.

Hereinafter, the present invention will be described in more detail with reference to specific examples and comparative examples. However, the present invention is not intended to limit the scope of the present invention. The present invention will be described in detail with reference to the following non-limiting examples.

1. Polyketone copolymer

The gear for a robot cleaner of the present invention is characterized by being made of a polyketone copolymer made of a repeating unit represented by the following general formulas (1) and (2).

- (CH2CH2-CO) x- (1)

- (CH2CH (CH3) -CO) y- (2)

(x and y are mole% of each of the general formulas (1) and (2) in the polymer and y / x is 0.03 to 0.3)

The polyketone copolymer of the present invention is a linear alternating structure and substantially contains carbon monoxide per one molecule of unsaturated hydrocarbon. Ethylenically unsaturated hydrocarbons suitable for use as precursors of polyketone polymers have up to 20 carbon atoms, preferably up to 10 carbon atoms. Ethylenically unsaturated hydrocarbons can also be selected from the group consisting of ethene and alpha-olefins such as propene, 1-butene, iso-butene, 1- hexene, 1- octene, , Or an aryl aliphatic group containing an aryl substituent on another aliphatic molecule, particularly containing an aryl substituent on an ethylenically unsaturated carbon atom. Examples of aryl aliphatic hydrocarbons in ethylenically unsaturated hydrocarbons include styrene, p-methyl styrene, p-ethyl styrene and m-isopropyl styrene. The polyketone polymer preferably used in the present invention is a copolymer of carbon monoxide and ethene or a second ethylenically unsaturated hydrocarbon having carbon monoxide, ethene and at least three carbon atoms, in particular alpha-olefins such as propene Is a terpolymer.

When the polyketone terpolymer is used as the main polymer component of the blend of the present invention, there are at least two units containing an ethylene moiety in each unit containing the second hydrocarbon moiety in the terpolymer. It is preferable that the number of units containing the second hydrocarbon moiety is from 10 to 100.

Preferred polymeric rings of the polyketone polymers in the present invention can be represented by the following formula (1).

[Chemical Formula 1]

- [CO- (-CH2-CH2-)] x- [CO- (G)] y-

In the above formula (1), G is an ethylenically unsaturated hydrocarbon, particularly an ethylenically unsaturated hydrocarbon having at least three carbon atoms, and x: y is preferably at least 1: 0.01.

In another embodiment, the polyketone polymer is a copolymer comprising repeating units represented by the general formulas (1) and (2), and y / x is preferably 0.03 to 0.3. When the value of the y / x value is less than 0.03, there is a limit in that the meltability and processability are inferior. When the value of y / x is more than 0.3, the mechanical properties are poor. Further, y / x is more preferably 0.03 to 0.1.

- [- CH2CH2-CO] x- (1)

- [- CH2 --CH (CH3) - CO] y - (2)

In addition, the melting point of the polymer can be controlled by controlling the ratio of ethylene to propylene in the polyketone polymer. For example, when the molar ratio of ethylene: propylene: carbon monoxide is adjusted to 46: 4: 50, the melting point is about 220 ° C, while the melting point is adjusted to 235 ° C when the molar ratio is adjusted to 47.3: 2.7: 50.

Particularly preferred are polyketone polymers having a number average molecular weight of from 100 to 200,000, especially from 20,000 to 90,000, as measured by gel permeation chromatography. The physical properties of the polymer are determined according to the molecular weight, depending on whether the polymer is a copolymer or a terpolymer and, in the case of a terpolymer, the properties of the second hydrocarbon part. The melting point of the total of the polymers used in the present invention is 175 ° C to 300 ° C, and generally 210 ° C to 270 ° C. The intrinsic viscosity (LVN) of the polymer measured by HFIP (hexafluoroisopropyl alcohol) at 60 DEG C using a standard tubular viscosity measuring apparatus is 0.5 dl / g to 10 dl / g, preferably 0.8 dl / g to 4 dl / g, And more preferably 1.0 dl / g to 2.0 dl / g. If the intrinsic viscosity is less than 0.5 dl / g, the mechanical properties are deteriorated. If the intrinsic viscosity exceeds 10 dl / g, the workability is deteriorated.

On the other hand, the molecular weight distribution of the polyketone is preferably 1.5 to 2.5, more preferably 1.8 to 2.2. When the ratio is less than 1.5, the polymerization yield decreases. When the ratio is 2.5 or more, the moldability is poor. In order to control the molecular weight distribution, it is possible to adjust proportionally according to the amount of the palladium catalyst and the polymerization temperature. That is, when the amount of the palladium catalyst is increased or when the polymerization temperature is 100 ° C or higher, the molecular weight distribution becomes larger.

The polyketone copolymer of the present invention is polymerized through a liquid phase polymerization carried out in a mixed solvent of acetic acid and water through a catalyst composition comprising carbon monoxide and an olefin with a palladium compound, an acid having 6 or less of PKa and phosphorus of this phosphorus compound. The polymerization temperature is preferably from 50 to 100 ° C. and the reaction pressure is from 40 to 60 bar. The polymer is recovered through filtration and purification processes after polymerization, and the remaining catalyst composition is removed with a solvent such as alcohol or acetone.

This is preferred as palladium acetate and a palladium compound in the amount of 10 ^-3 to ^10-2 1mole preferred. Specific examples of the acid having a pKa value of 6 or less include trifluoroacetic acid, p-toluenesulfonic acid, sulfuric acid, and sulfonic acid. In the present invention, trifluoroacetic acid is used and its amount is preferably 6 to 20 equivalents based on palladium. ((2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene)) bis (bis (2-methoxyphenyl) phosphine) is preferable as the two- , And the amount to be used is preferably 1 to 1.2 equivalents based on palladium.

Hereinafter, the polymerization process of the polyketone copolymer will be described in detail.

The polymerization of the polyketone copolymer of the present invention is carried out in the presence of an organometallic complex catalyst comprising (a) a Group 9, 10 or 11 transition metal compound and (b) a ligand having an element of Group 15, Is prepared by terpolymerizing carbon monoxide and ethylenic and propylenically unsaturated compounds in the medium.

The (a) Group 9, Group 10 or Group 11 transition metal compound may be a complex of cobalt or ruthenium, a carbonate, a phosphate, a carbamate or a sulfonate, and specific examples thereof include cobalt acetate, cobalt acetyl Acetate, ruthenium acetate, ruthenium trifluoroacetate, ruthenium acetylacetate, ruthenium trifluoromethanesulfonate. Nickel, or palladium, carbonates, phosphates, carbamates, and sulfonates. Specific examples thereof include nickel acetate, nickel acetylacetate, palladium acetate, palladium trifluoroacetate, palladium chloride, bis (N, N-diethylcarbamate) bis (diethylamine) palladium, palladium sulfate, complexes of copper or silver, carbonates, phosphates, carbamates and sulfonates. Specific examples thereof include copper acetate, And copper acetate, copper acetylacetate, acetic acid silver, trifluoroacetic acid silver, silver acetylacetate, trifluoromethanesulfonic acid and the like.

Among them, a palladium compound, particularly palladium acetate, is preferable in terms of yield of polyketone and molecular weight.

Examples of the ligand having an atom of Group 15 of (b) include (bis (2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene) ) Phosphine), 2,2'-bipyridyl, 4,4'-dimethyl-2,2'-bipyridyl, 2,2'-biphenyl- Bis (diphenylphosphino) propane, 1,4-bis (diphenylphosphino) butane, 1,3-bis [di (2-methoxyphenyl) phosphine] propane, 1,3-bis [di (2-isopropyl) Bis (diphenylphosphino) benzene, 1,2-bis (diphenylphosphino) benzene, 1,2-bis (diphenylphosphino) Bis [(di (2-methoxyphenyl) methyl] benzene, 1,2-bis [ Sulfonate sodium-phenyl) phosphino] methyl] benzene, 1,1'-bis (diphenylphosphino) ferrocene, 2- Phosphorus ligands such as cis-1,3-bis [di (2-methoxyphenyl) phosphino] propane and 2,2-dimethyl-1,3-bis [di (2- methoxyphenyl) .

 Among them, preferred ligands (b) having a Group 15 element are phosphorus ligands having an atom of Group 15, and particularly preferred ligands in terms of the yield of polyketone are ((2,2-dimethyl- Bis (di (2-methoxyphenyl) phosphino] propane, 1 (3-dioxane-5,5-diyl) bis (2-methoxyphenyl) phosphino] methyl] benzene in view of the molecular weight of the polyketone, and 2-hydroxy [ (2,2-dimethyl-1, 3-bis [di (2-methoxyphenyl) phosphino] propane in view of safety without requiring an organic solvent, Di (2-methoxy-4-sulfonic acid sodium-phenyl) -bis (bis (methylene) (2-methoxy-4-sulfonic acid sodium-phenyl) phosphino] methyl] benzene, and most preferably (( (2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene)) bis (bis (2-methoxyphenyl) phosphine).

The carbon monoxide, ethylene and propylene are liquid phase polymerized in a mixed solvent of alcohol (e.g. methanol) and water to produce a linear terpolymer. As the mixed solvent, a mixture of 100 parts by weight of methanol and 2 to 10 parts by weight of water may be used. If the content of water in the mixed solvent is less than 2 parts by weight, a ketal may be formed to lower the heat stability in the process. If the amount is more than 10 parts by weight, the mechanical properties of the product may be deteriorated.

When the polyketone of the present invention is polymerized, benzophenone may be added as needed. The amount of benzophenone to be added is such that (a) the molar ratio of benzophenone to the ninth, tenth or eleventh transition metal compound and 1: 5-100, preferably 1: 40-60. If the molar ratio of the transition metal to the benzophenone is less than 1: 5, the effect of improving the intrinsic viscosity of the produced polyketone is unsatisfactory. If the molar ratio of the transition metal to the benzophenone exceeds 1: 100, .

(a) The amount of the Group 9, Group 10 or Group 11 transition metal compound to be used varies depending on the kind of the ethylenically unsaturated compound to be selected and other polymerization conditions, But is usually 0.01 to 100 mmol, preferably 0.01 to 10 mmol, per liter of the reaction volume of the reaction zone. The capacity of the reaction zone means the liquid phase capacity of the reactor. The amount of the ligand (b) to be used is not particularly limited, but is usually 0.1 to 3 mol, preferably 1 to 3 mol, per 1 mol of the transition metal compound (a).

Examples of the ethylenically unsaturated compound copolymerized with carbon monoxide include ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, -Olefins such as hexadecene and vinylcyclohexane; Alkenyl aromatic compounds such as styrene and? -Methylstyrene; But are not limited to, cyclopentene, norbornene, 5-methylnorbornene, 5-phenylnorbornene, tetracyclododecene, tricyclododecene, tricyclodecene, pentacyclopentadecene, pentacyclohexadecene, Cyclic olefins such as cyclododecene; Vinyl halides such as vinyl chloride; Ethyl acrylate, and acrylates such as methyl acrylate. Of these, preferred ethylenically unsaturated compounds are? -Olefins, more preferably? -Olefins having 2 to 4 carbon atoms, and most preferably ethylene.

 The ternary copolymerization of carbon monoxide, the ethylenically unsaturated compound and propene is carried out in the presence of an organometallic complex catalyst comprising a ligand (b) having an element of group 9, group 10 or group 11 transition metal compound (a) and group 15 element , Wherein the catalyst is produced by contacting the two components. Any method may be employed as the method of contacting. That is, the solution may be prepared as a solution in which two components are premixed in a suitable solvent, or the two components may be supplied separately to the polymerization system and contacted in the polymerization system.

As the polymerization method, a solution polymerization method using a liquid medium, a suspension polymerization method, a vapor phase polymerization method in which a small amount of a polymer is impregnated with a high concentration catalyst solution, and the like are used. The polymerization may be either batchwise or continuous. The reactor used in the polymerization can be used as it is or in a known manner. The polymerization temperature is not particularly limited, and is generally 40 to 180 占 폚, preferably 50 to 120 占 폚. The pressure at the time of polymerization is not particularly limited, but is generally from normal pressure to 20 MPa, preferably from 4 to 15 MPa.

The method for producing a polyketone copolymer of the present invention comprises: preparing a catalyst composition comprising a palladium compound, an acid having a pKa value of 6 or less, and a bidentate compound of phosphorus; Preparing a mixed solvent (polymerization solvent) comprising methanol and water; Conducting the polymerization in the presence of the catalyst composition and the mixed solvent to prepare a linear terpolymer of carbon monoxide, ethylene and propene; Removing the remaining catalyst composition from the linear terpolymer with a solvent (e.g., alcohol and acetone) to obtain a polyketone resin.

As the palladium compound constituting the catalyst composition, palladium acetate can be used, and the amount of the palladium compound to be used is preferably 10 ^-3 to 10 ^-1 mole.

As the acid having a pKa value of 6 or less constituting the catalyst composition, at least one selected from the group consisting of trifluoroacetic acid, p-toluenesulfonic acid, sulfuric acid and sulfonic acid, preferably trifluoroacetic acid, may be used. 6 to 20 (mol) equivalents relative to the compound is appropriate.

As the 2-position ligand compound constituting the catalyst composition, bis (2, 2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene) bis (bis (2-methoxyphenyl) ), 1,3-bis [diphenylphosphino] propane (such as 1,3-bis [di (2-methoxyphenylphosphino)] propane and 1,3- ] -1,5-dioxaspiro [5,5] undecane, and the amount thereof is suitably 1 to 1.2 (mol) relative to the palladium compound.

The carbon monoxide, ethylene and propene are liquid phase polymerized in a mixed solvent of methanol and water to produce a linear terpolymer.

The polymerization temperature is preferably in the range of 50 to 100 ° C and the reaction pressure in the range of 40 to 60 bar. The resulting polymer is recovered through filtration and purification processes after polymerization, and the remaining catalyst composition is removed with a solvent such as alcohol or acetone.

2. Antiwear agent

The present invention is characterized by adding a wear-resistant agent to improve abrasion resistance. A silicone resin is preferable as the antiwear agent. The silicone resin is characterized by containing 0.1 to 15 parts by weight of a silicone resin per 100 parts by weight of the polyketone resin. When the content of the silicone resin is less than 0.1, wear resistance is not sufficient when used as a gear, and when the content exceeds 15, mechanical properties inherent to polyketone are deteriorated.

 The silicone resin used in the present invention is in the form of a powder and preferably has a diameter of 1 to 2 占 퐉. When the silicone resin is out of the range, blending with a polyketone is not smooth.

Hereinafter, the constitution and effects of the present invention will be described in more detail with specific examples and comparative examples.

Example 1

Catalysts formed from palladium acetate, trifluoroacetic acid and ((2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene)) bis (bis (2-methoxyphenyl) A linear alternating polyketone terpolymer of carbon monoxide and ethylene and propene was prepared in the presence of the composition. In the above, the content of trifluoroacetic acid with respect to palladium is 11 times the molar ratio, and the two stages of the first stage at a polymerization temperature of 80 ° C and the second stage at 84 ° C are carried out. The molar ratio of ethylene to propene in the polyketone terpolymer prepared above was 46 to 4. The melting point of the polyketone terpolymer was 220 占 폚, the LVN measured at 25 占 폚 by HFIP (hexa-fluoroisopropano) was 1.2 dl / g, the MI index was 60 g / 10 min and the MWD was 2.0.

The prepared polyketone terpolymer was coagulated in a plate shape at a room temperature to a thickness corresponding to the gear thickness, and gears of a required size were formed by blanking in the coagulated plastic plate material.

Example 2

A polyketone terpolymer was prepared in the same manner as in Example 1, and then 100 parts by weight of the polyketone terpolymer prepared above was mixed with 1 part by weight of a silicone resin and solidified at a room temperature with a plate thickness corresponding to the gear thickness. The gears were manufactured by forming the gears of the required dimensions in the plastic plate material by blanking.

Example 2

Catalysts formed from palladium acetate, trifluoroacetic acid and ((2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene)) bis (bis (2-methoxyphenyl) A linear alternating polyketone terpolymer of carbon monoxide and ethylene and propene was prepared in the presence of the composition. In the above, the content of trifluoroacetic acid with respect to palladium is 11 times the molar ratio, and the two stages of the first stage at a polymerization temperature of 80 ° C and the second stage at 84 ° C are carried out. The molar ratio of ethylene to propene in the polyketone terpolymer prepared above was 46 to 4. The melting point of the polyketone terpolymer was 220 占 폚, the LVN measured at 25 占 폚 by HFIP (hexa-fluoroisopropano) was 1.4 dl / g, the MI index was 60 g / 10 min and the MWD was 2.0.

The prepared polyketone terpolymer was coagulated in a plate shape at a room temperature to a thickness corresponding to the gear thickness, and gears of a required size were formed by blanking in the coagulated plastic plate material.

Example 3

Catalysts formed from palladium acetate, trifluoroacetic acid and ((2,2-dimethyl-1,3-dioxane-5,5-diyl) bis (methylene)) bis (bis (2-methoxyphenyl) A linear alternating polyketone terpolymer of carbon monoxide and ethylene and propene was prepared in the presence of the composition. In the above, the content of trifluoroacetic acid with respect to palladium is 11 times the molar ratio, and the two stages of the first stage at a polymerization temperature of 80 ° C and the second stage at 84 ° C are carried out. The molar ratio of ethylene to propene in the polyketone terpolymer prepared above was 46 to 4. The melting point of the polyketone terpolymer was 220 占 폚, the LVN measured at 25 占 폚 by HFIP (hexa-fluoroisopropano) was 2.0 dl / g, the MI index was 60 g / 10 min and the MWD was 2.0.

The prepared polyketone terpolymer was coagulated in a plate shape at a room temperature to a thickness corresponding to the gear thickness, and gears of a required size were formed by blanking in the coagulated plastic plate material.

Example 4

A polyketone terpolymer was prepared in the same manner as in Example 2, and then 100 parts by weight of the polyketone terpolymer prepared above was mixed with 5 parts by weight of a silicone resin and solidified at a room temperature with a plate thickness corresponding to the gear thickness. The gears were manufactured by forming the gears of the required dimensions in the plastic plate material by blanking.

Example 5

10 parts by weight of a silicone resin was mixed with 100 parts by weight of the polyketone terpolymer prepared in the same manner as in Example 2, and the mixture was solidified at a room temperature with a plate thickness corresponding to the gear thickness, The gears were manufactured by forming the gears of the required dimensions in the plastic plate material by blanking.

Comparative Example

The procedure of Example 1 was repeated except that POM was used as a base material of DuPont in place of the polyketone copolymer.

Property evaluation

1. Evaluation of dimensional stability, abrasion resistance and impact resistance: The plastic panels produced in the above Examples and Comparative Examples were evaluated for dimensional stability, abrasion resistance and impact resistance by the following methods.

1) Evaluation of dimensional stability: The strain of the product was evaluated according to MS211-47 for vertical and horizontal directions at a temperature of 50 ° C and a relative humidity of 90%.

2) Evaluation of wear amount: Evaluation was made using a cylindrical specimen having an inner diameter of 20 mm, an outer diameter of 25 mm and a height of 15 mm and a counter material. The abrasion loss was measured at a speed of 50 rpm under a JIS K7218 standard, a load of 150 N, and a wear distance of 3 km.

3) Impact resistance evaluation: ASTM D256, 1/4 inch thickness specimen was evaluated at room temperature.

Item Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example Product Strain - Vertical
(50 DEG C, 90% RH) 0.12 0.14 0.10 0.08 0.15 0.25 Product Strain - Horizontal
(50 DEG C, 90% RH) 0.04 0.03 0.05 0.062 0.04 0.12 Wear amount (g) 0.018 0.015 0.010 0.003 0.002 0.083 Izod impact strength
(Kg · cm / cm) 33 35 60 28 22 22

The above table shows that the gears made of the polyketone base or blend composition according to the present invention of Examples 1 to 5 are superior to the gears prepared in the comparative examples in terms of product deformation in the vertical and horizontal directions and excellent in abrasion resistance appear.

In addition, the present invention was superior to the JIS K7218 standard at a speed of 50 rpm, a load of 150 N, a wear distance of 3 km, and a wear amount of 0.020 g or less.

Claims (5)

A plastic sheet material for blanking and molding a plastic gear,
The plastic plate material is a polyketone copolymer composed of repeating units represented by the following general formulas (1) and (2)
Wherein the wear resistance agent is a silicone resin in powder form,
The abrasion resistance agent contains 0.1 to 15 parts by weight based on 100 parts by weight of the polyketone copolymer,
The ligand of the catalyst composition used in the polymerization of the polyketone is bis (methylene) bis (bis (2-methoxyphenyl) phosphine Pin)
The intrinsic viscosity of the polyketone copolymer is 1.0 to 2.0 dl / g,
Wherein the abrasion resistance is 0.020 g or less at a speed of 50 rpm, a load of 150 N, and a wear distance of 3 km under the standard of JIS K7218.
- (CH2CH2-CO) x- (1)
- (CH2CH (CH3) -CO) y- (2)
(x and y are mole% of each of the general formulas (1) and (2) in the polymer and y / x is 0.03 to 0.3)
delete delete delete The method according to claim 1,
Wherein the polyketone copolymer has a molecular weight distribution of 1.5 to 2.5.

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