A polyketone resin composition, its preparation method and application

Abstract

This invention discloses a polyketone resin composition, its preparation method, and its applications, relating to the field of polymer composite materials technology. The polyketone resin composition includes polyketone resin, glass fiber, TPU elastomer, and a flow modifier. The TPU elastomer has a Shore hardness of 64D~74D; the flow modifier is selected from at least one of hyperbranched polymers and hydroxyl-terminated hyperbranched polyesters. The introduction of the flow modifier significantly alters the melt rheological behavior of the composite system, ensuring that the glass fiber is firmly bound within the resin phase during molding. The TPU elastomer has a significant beneficial effect on improving the appearance of the glass fiber reinforced polyketone resin. The molded product exhibits high gloss and low fiber looseness, maintaining excellent physical and mechanical properties while demonstrating a good product appearance.

Description

Technical Field

[0001] This invention relates to the field of polymer composite materials technology, and more specifically, to a polyketone resin composition, its preparation method, and its application. Background Technology

[0002] Polyketone (POK) resin, as a high-performance engineering plastic, is widely used in the automotive industry, electronic and electrical equipment, and machinery manufacturing due to its excellent wear resistance, chemical corrosion resistance, flame retardant properties, and dimensional stability.

[0003] To further improve the mechanical strength of polyketone resin and reduce production costs, inorganic fillers are commonly used to modify it. Among them, glass fiber (referred to as glass fiber) has become the preferred material for reinforcing polyketone resin due to its high strength, high modulus and good interfacial bonding ability with the resin matrix. However, the following problems exist in the preparation process of composite materials: (1) There are significant differences between glass fiber and resin matrix in terms of density, shrinkage rate and surface chemical properties, resulting in weak interfacial bonding and thermodynamic instability between the two phases; (2) During injection molding and extrusion, the resin melt in the screw extruder, the strong shear rate gradient and the drastic viscosity change during the cooling process jointly drive the migration and separation of low viscosity resin and rigid glass fiber; (3) The thin-walled resin surface layer formed by rapid cooling cannot effectively embed and anchor the glass fiber. Under the action of internal shrinkage stress, the fiber is easy to penetrate the surface layer and become exposed. The coupling of the above three factors ultimately leads to the formation of floating fiber defects with poor appearance on the surface of glass fiber reinforced polyketone resin composition.

[0004] Therefore, there is an urgent need to develop a polyketone resin composition with low fiber float and high gloss glass fiber reinforcement to overcome problems such as fiber float and unsightly appearance that occur during the injection molding of composite materials, so as to meet the needs of high-end application fields.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a polyketone resin composition, its preparation method, and its application, so as to solve or improve the above-mentioned technical problems.

[0007] This invention is implemented as follows: In a first aspect, the present invention provides a polyketone resin composition, which, by weight parts, comprises the following components: Polyketone resin 30-85 parts, glass fiber 15-60 parts, TPU elastomer 4-12 parts, flow modifier 0.08-0.6 parts; The Shore hardness of TPU elastomer is 64D~74D; The flowability improver is selected from at least one of hyperbranched polymers and hydroxyl-terminated hyperbranched polyesters.

[0008] In a second aspect, the present invention provides a method for preparing a polyketone resin composition as described in any of the foregoing embodiments, comprising the following steps: The polyketone resin and coupling agent are mixed evenly in proportion, and then TPU elastomer, flow improver, antioxidant and lubricant are added. The mixture is then mixed evenly under heating conditions of 75℃~85℃ to obtain the first mixture. The first mixture and glass fiber are mixed evenly in a twin-screw extruder and then extruded to obtain a polyketone resin composition.

[0009] Thirdly, the present invention provides the application of a polyketone resin composition as described in any of the foregoing embodiments or a polyketone resin composition prepared by any of the foregoing embodiments in the automotive industry, electronic and electrical equipment, and machinery manufacturing.

[0010] The present invention has the following beneficial effects: The polyketone resin composition provided in this invention produces products with high gloss and low fiber float, exhibiting excellent physical and mechanical properties while maintaining a good product appearance. The flowability improver, with its highly branched three-dimensional spherical structure and abundant terminal functional groups, significantly alters the melt rheological behavior of the composite system upon introduction into the resin matrix. On one hand, it effectively increases melt viscosity at low shear rates, enhancing the melt's encapsulation and anchoring effect on glass fibers and inhibiting fiber migration at the melt front. On the other hand, at high shear rates, its branched structure easily expands, exhibiting good shear-thinning characteristics without affecting processing flowability. This unique rheological control capability ensures that the glass fibers are firmly bound within the resin phase during molding. The TPU elastomer reduces the crystallization rate of the polyketone resin, significantly improving the appearance of glass fiber reinforced polyketone resin. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 The morphology analysis of the polyketone resin compositions prepared in Example 1 and Comparative Example 1 is shown in the left figure, which is Comparative Example 1 and the right figure is Example 1. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0014] This invention adjusts the components of a polyketone resin composition to achieve high gloss and low fiber loosening in the molded product, maintaining excellent physical and mechanical properties while exhibiting a good product appearance. Specific embodiments are as follows: In a first aspect, the present invention provides a polyketone resin composition, which, by weight parts, comprises the following components: Polyketone resin 30-85 parts, glass fiber 15-60 parts, TPU elastomer 4-12 parts, flow modifier 0.08-0.6 parts; The Shore hardness of TPU elastomer is 64D~74D; The flowability improver is selected from at least one of hyperbranched polymers and hydroxyl-terminated hyperbranched polyesters.

[0015] It should be noted that although glass fiber and resin matrix have good interfacial bonding ability, as the filler content increases, compatibility and dispersibility issues between polyketone resin and glass fiber gradually emerge. Furthermore, due to the rapid crystallization rate and large crystallization shrinkage of polyketone resin, while glass fiber has a low coefficient of thermal expansion, the difference in shrinkage during cooling causes glass fiber to protrude more easily from the resin surface, resulting in exposed glass fiber on the product surface. This not only affects the product's gloss but may also reduce its surface abrasion resistance and corrosion resistance, thus limiting the application of glass fiber reinforced polyketone resin.

[0016] The polyketone resin composition provided by this invention comprises polyketone resin, glass fiber, TPU elastomer, and flow modifier, which improves and solves the above-mentioned problems. A detailed analysis follows: Polyketone resin directly affects the flowability and moldability of the composition in injection molding, extrusion, and other processes. During preparation, polyketone resin can encapsulate glass fibers, preventing them from being mechanically damaged and chemically corroded during processing and use. Glass fibers are used to enhance and improve the physical and mechanical properties of the matrix resin. TPU elastomers, by reducing the crystallization rate of polyketone resin, have a significant beneficial effect on improving the appearance of glass fiber reinforced polyketone resin. Flowability improvers, with their highly branched three-dimensional spherical structure and abundant terminal functional groups, can significantly alter the melt rheological behavior of the composite system when introduced into the resin matrix. On the one hand, at low shear rates, they effectively increase melt viscosity, enhancing the melt's encapsulation and anchoring effect on glass fibers and inhibiting fiber migration at the melt front. On the other hand, at high shear rates, their branched structure easily expands, exhibiting good shear-thinning characteristics without affecting processing flowability. This unique rheological control capability ensures that glass fibers are firmly bound within the resin phase during molding, improving product appearance defects.

[0017] In light of the application scenarios of the polyketone resin composition of the present invention, the selected TPU elastomer (64D~74D) with higher hardness can withstand high loads, maintain its shape, and resist deformation when the related products are used. In addition, the raw materials with higher hardness have better melt flow and are easier to injection mold into complex thin-walled products.

[0018] For example, in this embodiment of the invention, the TPU elastomer used is polyester-type TPU, which, while resisting fiber buoyancy, has minimal impact on other properties of the polyketone resin composition; grades include Elastollan S64D and Elastollan S74D from BASF, Germany. In other embodiments of the invention, other grades of TPU elastomer can be selected according to actual needs. If the amount of TPU elastomer used exceeds the set range, it will not improve the anti-fiber buoyancy performance, but will instead increase the cost of TPU and reduce its physical properties.

[0019] The flowability improvers used are Wuhan Hyperbranched HyPer H101 and HyPer C181; in other embodiments of the present invention, other grades of flowability improvers can be selected according to actual needs. The use of flowability improvers will increase cost, so their dosage will be reasonably selected within a set range.

[0020] In an optional embodiment, the polyketone resin composition comprises the following components by weight: 60-85 parts polyketone resin, 25-40 parts glass fiber, 4-10 parts TPU elastomer, and 0.1-0.3 parts flowability improver.

[0021] In an optional embodiment, the polyketone resin includes a high-viscosity resin and a low-viscosity resin in a mass ratio of 1:(1.5~2), wherein the high-viscosity resin has an average molecular weight of 170,000~190,000; and the low-viscosity resin has an average molecular weight of 120,000~140,000.

[0022] It should be noted that the higher the average molecular weight of a polymer, the longer its molecular chains, the more entangled they are, the higher the melt viscosity, and the worse the fluidity. Polyketone resins are compounded with resins of different viscosity types, which helps to broaden their application range. They can be used to manufacture heavy structural components that can withstand ultimate stress, as well as precision micro-parts.

[0023] For example, in this embodiment of the invention, the polyketone resin used is Hyosung M330F (a high viscosity resin) or M930F (a low viscosity resin) from South Korea; in other embodiments of the invention, a suitable brand or manufacturer can be selected according to actual needs.

[0024] And / or, the glass fiber is a short-cut alkali-free glass fiber with a length of 3mm to 6mm and a diameter of 8μm to 15μm.

[0025] For example, in this embodiment of the invention, the glass fiber used is Chongqing International ECS301HP-3-H; in other embodiments of the invention, other grades of glass fiber can be selected according to actual needs.

[0026] In an optional embodiment, the polyketone resin composition further includes: a coupling agent, an antioxidant, and a lubricant; The coupling agent is used at a rate of 0.1 wt% to 0.6 wt% of the total mass of the polyketone resin composition. The amount of antioxidant used is 0.01wt%~0.4wt% of the total mass of the polyketone resin composition; The amount of lubricant used is 0.01wt% to 0.6wt% of the total mass of the polyketone resin composition.

[0027] In an optional embodiment, the amount of coupling agent used is 0.1wt% to 0.35wt% of the total mass of the polyketone resin composition; The amount of antioxidant used is 0.1wt%~0.3wt% of the total mass of the polyketone resin composition; The amount of lubricant used is 0.1wt% to 0.25wt% of the total mass of the polyketone resin composition.

[0028] In an optional embodiment, the coupling agent is selected from at least one of γ-aminopropyltriethoxysilane, vinyltriisopropoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, and 3-(2,3-epoxypropoxy)propyltrimethoxysilane.

[0029] It should be noted that the organic functional groups (such as amino and epoxy groups) in silane coupling agents can undergo chemical reactions or strong physical interactions with specific groups of polyketone resins; silane coupling agents can also provide a certain degree of flexibility and release interfacial stress in the product; in addition, silanes are prone to hydrolysis and condensation when heated during processing, forming strong Si-O-Si covalent bonds with the silanol groups (-Si-OH) on the surface of glass fibers, which can improve the tensile strength, flexural strength and impact toughness of the polyketone resin composition.

[0030] For example, in this embodiment of the invention, the coupling agent used is Shandong Haiou KH550 or KH560; in other embodiments of the invention, other brands of coupling agents can be selected according to actual needs.

[0031] And / or, the antioxidant is selected from at least one of antioxidant 1010, antioxidant 1098, antioxidant 168, antioxidant 9228, antioxidant 2450, antioxidant AO-80 and antioxidant MD 697.

[0032] Antioxidants can inhibit or delay the oxidative degradation of resins during processing (high temperature) and use (long-term thermo-oxidative environment), ensuring the stability of resin performance during multiple melt processing (such as injection molding and granulation) and preventing "material burning"; they also promote the preservation of the mechanical and insulating properties of materials under long-term high-temperature working environments (such as automotive engine compartments and electronic appliances).

[0033] For example, in this embodiment of the invention, the antioxidants used are Nanjing Milan MIANOX 9228 and MIANOXAO-80; in other embodiments of the invention, other brands of antioxidants may be selected according to actual needs.

[0034] And / or, the lubricant is selected from at least one of calcium stearate, zinc stearate, silicone powder, pentaerythritol stearate and ethylene bis-stearamide; Lubricants help reduce friction between polymer melt and processing equipment (screw, barrel), and between molecular chains, improve melt flowability, reduce processing temperature and pressure, improve processability, save energy, and increase production efficiency; they also help improve the gloss of products, especially by effectively inhibiting glass fiber exposure and making the surface smoother; in addition, they can protect molds, improve demolding efficiency, extend mold life, and reduce defect rate.

[0035] For example, in this embodiment of the invention, the lubricant used is Hangzhou Kaijie KJ-B01 or Japanese Kao KAOWAXEB-G; in other embodiments of the invention, other brands of lubricants can be selected according to actual needs.

[0036] In a second aspect, the present invention provides a method for preparing a polyketone resin composition as described in any of the foregoing embodiments, comprising the following steps: The polyketone resin and coupling agent are mixed evenly in proportion, and then TPU elastomer, flow improver, antioxidant and lubricant are added. The mixture is then mixed evenly under heating conditions of 75℃~85℃ to obtain the first mixture. The first mixture and glass fiber are mixed evenly in a twin-screw extruder and then extruded to obtain a polyketone resin composition.

[0037] It should be noted that the twin-screw extruder used in this invention employs a melt extrusion blending process to produce polyketone resin compositions. The extruder is equipped with a side feed port, wherein the substances related to the first mixture are fed in from the main feed port, and the glass fiber is fed in from the side feed port.

[0038] In an optional embodiment, the production process is carried out by melt extrusion blending, and the twin screw is divided into eleven heating zones; the temperature of each zone is as follows: the temperature of zone 1 is 120℃~150℃, the temperature of zones 2 to 5 is 210℃~240℃, the temperature of zones 6 to 9 is 200℃~230℃, and the temperature of zones 10 to 11 is 210℃~240℃. And / or, the main unit speed is 220 rpm to 260 rpm.

[0039] In an optional implementation, the temperature setting of each of the eleven heating zones of the twin-screw compressor is selected from either Scheme 1 or Scheme 2: Option 1: Zone 1 temperature is 120℃, Zones 2 to 5 temperature is 210℃, Zones 6 to 9 temperature is 220℃, Zones 10 to 11 temperature is 230℃, and the main unit speed is 240 rpm to 260 rpm. Option 2: Zone 1 temperature is 120℃, Zones 2 to 5 temperature is 240℃, Zones 6 to 9 temperature is 230℃, Zones 10 to 11 temperature is 220℃, and the main unit speed is 220 rpm to 240 rpm.

[0040] Thirdly, the present invention provides the application of a polyketone resin composition as described in any of the foregoing embodiments or a polyketone resin composition prepared by any of the foregoing embodiments in the automotive industry, electronic and electrical equipment, and machinery manufacturing.

[0041] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0042] Example 1 This embodiment provides a method for preparing a polyketone resin composition, comprising the following steps: Accurately weigh the required amount of raw materials, mix the polyketone resin and coupling agent evenly according to the proportion, then add TPU elastomer, flow improver, antioxidant and lubricant, and then mix evenly under heating at 75°C to obtain the first mixture; During the extrusion operation, the first mixture is added through the main feed port and fed into the glass fiber side feed cylinder. The first mixture and glass fiber are mixed evenly in the twin-screw extruder and then extruded; the processing extrusion adopts scheme one.

[0043] The coupling agent used is γ-aminopropyltriethoxysilane (KH550), accounting for 0.3 wt% of the total mass of the polyketone resin composition; the antioxidant used is MIANOX 9228, accounting for 0.2 wt% of the total mass of the polyketone resin composition; and the lubricant used is ethylene bis-stearamide (KAOWAX EB-G), accounting for 0.2 wt% of the total mass of the polyketone resin composition. The amounts of the remaining components are shown in Table 1.

[0044] Example 2-12 Examples 2-12 provide a method for preparing a polyketone resin composition. The implementation steps are the same as in Example 1, except that the raw materials and their corresponding amounts are changed, and the processing extrusion scheme is different.

[0045] The relevant data for Examples 2-12 are shown in Table 1.

[0046] Comparative Examples 1-11 Comparative Examples 1-11 provide a method for preparing a polyketone resin composition. The implementation steps are the same as those in Example 1, except that the raw materials and their corresponding amounts are changed, and the processing extrusion scheme is different.

[0047] The relevant data for comparative examples 1-11 are shown in Table 2.

[0048] Table 1 Raw material ratio and performance data

[0049] Note: "-" indicates that the corresponding raw materials were not used.

[0050] Table 2 Raw material ratio and performance data

[0051] Note: "-" indicates that the corresponding raw materials were not used.

[0052] Test Example 1 This test example performs mechanical property tests and appearance tests on the polyketone resin compositions prepared in Examples 1-12 and Comparative Examples 1-11. The mechanical property tests are conducted in accordance with ISO 527 / 2 2012. The appearance tests include the surface gloss test and the evaluation of fiber floating condition of the polyketone resin. The surface gloss is tested according to the following method, and the fiber floating condition is divided into three grades: excellent, medium, and poor.

[0053] The surface gloss test method is as follows: A gloss meter is used for measurement, employing an 80mm × 50mm × 2mm injection molded sample. The sample is injection molded under the following conditions: injection temperature not lower than the melting or softening point of the polyketone resin, mold temperature 80℃, and appropriate injection pressure and back pressure. The surface gloss of the material is measured from three angles: 20°, 60°, and 85°. The average surface gloss is obtained from measurements in different directions, and the smoothness is calculated using the following formula, where the denominator represents the surface gloss of the unreinforced polyketone resin measured under the same process conditions at different angles, denoted as Gb20, Gb60, and Gb85, respectively. .

[0054] In the formula, G20, G60, and G85 are the gloss values ​​measured at angles of 20°, 60°, and 85°. The gloss level result is the arithmetic mean of the results obtained by measuring five samples with the same composition and the same sample preparation conditions using the same method. The relevant data of Examples 1-12 are shown in Table 1, and the relevant data of Comparative Examples 1-11 are shown in Table 2.

[0055] As shown in Tables 1 and 2, the simultaneous addition of TPU elastomer and hydroxyl-terminated hyperbranched polyester / hyperbranched polymer to polyketone resin (Examples 1-12) can improve fiber floating during the injection molding process of the composite material and enhance gloss. Using TPU elastomer alone (Comparative Examples 4-5, 9-10) or hydroxyl-terminated hyperbranched polyester (Comparative Example 1) or hyperbranched polymer alone (Comparative Examples 3, 8) does not produce the same anti-fiber floating effect as using both TPU elastomer and hydroxyl-terminated hyperbranched polyester / hyperbranched polymer. Under the synergistic effect of the TPU elastomer and hydroxyl-terminated hyperbranched polyester / hyperbranched polymer components, both high and low viscosity resins can achieve excellent anti-fiber floating effects within a wide ratio range (1:1.5 to 1:2.5).

[0056] The amount of glass fiber was significantly increased from 30 parts (Examples 1-9, Comparative Examples 1-6) to 40 parts (Examples 10-12, Comparative Examples 7-11). At the high glass fiber content of 40 parts, the fiber floating problem worsened dramatically without using the complete composition of the present invention (Comparative Examples 8-11, fiber floating grade "poor"). However, in Examples 10-12 using the solution of the present invention, even with high glass fiber filling, the fiber floating grade still reached "good" to "excellent". Example 11 used 64D and 74D hardness TPU elastomers blended at a mass ratio of 4:6, resulting in a tensile strength of 135 MPa, a gloss level of 0.92, and an excellent fiber floating grade. This result indicates that the hard segment content can be continuously adjusted by blending TPU elastomers of different hardnesses, thereby precisely controlling the mechanical properties and surface characteristics of the material over a wide range, overcoming the limitations of a single hardness grade in performance balance.

[0057] Test Example 2 This test example analyzes the morphology of the polyketone resin compositions prepared in Example 1 and Comparative Example 1. The test results are shown in [Figure 1]. Figure 1 The left figure is Comparative Example 1, and the right figure is Example 1.

[0058] from Figure 1 It can be seen that the surface of the product of Comparative Example 1 has obvious floating fibers, while the surface of the product of Example 1 is smooth and glossy.

[0059] In summary, the polyketone resin compositions provided in this invention, after processing and molding, produce articles with high gloss and low fiber content, exhibiting a good product appearance while maintaining excellent physical and mechanical properties. Specifically, the flowability improver can significantly reduce the melt's residence range in the processing equipment, minimizing product appearance defects caused by exceeding the ideal residence time limit; and the TPU elastomer has a significant beneficial effect on improving the appearance of glass fiber reinforced polyketone resin.

[0060] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A polyketone resin composition, characterized in that, The polyketone resin composition comprises the following components in parts by weight: Polyketone resin 30-85 parts, glass fiber 15-60 parts, TPU elastomer 4-12 parts, flow modifier 0.08-0.6 parts; The Shore hardness of the TPU elastomer is 64D~74D; The flowability improver is selected from at least one of hyperbranched polymers and hydroxyl-terminated hyperbranched polyesters.

2. The polyketone resin composition according to claim 1, characterized in that, The polyketone resin composition comprises the following components in parts by weight: 60-85 parts polyketone resin, 25-40 parts glass fiber, 4-10 parts TPU elastomer, and 0.1-0.3 parts flowability improver.

3. The polyketone resin composition according to claim 1, characterized in that, The polyketone resin comprises a high-viscosity resin and a low-viscosity resin in a mass ratio of 1:(1.5~2), wherein the high-viscosity resin has an average molecular weight of 170,000~190,000; and the low-viscosity resin has an average molecular weight of 120,000~140,000. And / or, the glass fiber is a short-cut alkali-free glass fiber with a length of 3mm to 6mm and a diameter of 8μm to 15μm.

4. The polyketone resin composition according to claim 1, characterized in that, The polyketone resin composition further includes: a coupling agent, an antioxidant, and a lubricant; The coupling agent is used in an amount of 0.1 wt% to 0.6 wt% of the total mass of the polyketone resin composition. The amount of the antioxidant is 0.01wt% to 0.4wt% of the total mass of the polyketone resin composition; The amount of the lubricant used is 0.01wt% to 0.6wt% of the total mass of the polyketone resin composition.

5. The polyketone resin composition according to claim 4, characterized in that, The amount of the coupling agent is 0.1 wt% to 0.35 wt% of the total mass of the polyketone resin composition; The amount of the antioxidant is 0.1 wt% to 0.3 wt% of the total mass of the polyketone resin composition; The amount of the lubricant used is 0.1wt% to 0.25wt% of the total mass of the polyketone resin composition.

6. The polyketone resin composition according to claim 4, characterized in that, The coupling agent is selected from at least one of γ-aminopropyltriethoxysilane, vinyltriisopropoxysilane, vinyltriethoxysilane, vinyltrimethoxysilane, and 3-(2,3-epoxypropoxy)propyltrimethoxysilane; And / or, the antioxidant is selected from at least one of antioxidant 1010, antioxidant 1098, antioxidant 168, antioxidant 9228, antioxidant 2450, antioxidant AO-80 and antioxidant MD 697; And / or, the lubricant is selected from at least one of calcium stearate, zinc stearate, silicone powder, pentaerythritol stearate and ethylene bis-stearamide.

7. A method for preparing a polyketone resin composition according to any one of claims 1-6, characterized in that, Includes the following steps: The polyketone resin and coupling agent are mixed evenly in proportion, and then TPU elastomer, flow improver, antioxidant and lubricant are added. The mixture is then mixed evenly under heating conditions of 75℃~85℃ to obtain the first mixture. The first mixture and glass fiber were mixed evenly in a twin-screw extruder and then extruded to obtain a polyketone resin composition.

8. The preparation method according to claim 7, characterized in that, The product is manufactured using a melt extrusion blending process. The twin-screw extruder is divided into eleven heating zones. The temperatures of each zone are as follows: Zone 1 is 120℃~150℃, Zones 2 to 5 are 210℃~240℃, Zones 6 to 9 are 200℃~230℃, and Zones 10 to 11 are 210℃~240℃. And / or, the main unit speed is 220 rpm to 260 rpm.

9. The preparation method according to claim 8, characterized in that, In the eleven heating zones of the twin-screw compressor, the temperature settings for each zone are selected from either Option 1 or Option 2: Option 1: Zone 1 temperature is 120℃, Zones 2 to 5 temperature is 210℃, Zones 6 to 9 temperature is 220℃, Zones 10 to 11 temperature is 230℃, and the main unit speed is 240 rpm to 260 rpm. Option 2: Zone 1 temperature is 120℃, Zones 2 to 5 temperature is 240℃, Zones 6 to 9 temperature is 230℃, Zones 10 to 11 temperature is 220℃, and the main unit speed is 220 rpm to 260 rpm.

10. The application of a polyketone resin composition as described in any one of claims 1-6 or a polyketone resin composition prepared by any one of claims 7-9 in the automotive industry, electronic and electrical equipment, and machinery manufacturing.

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