WO2023234220A1 - 熱可塑性樹脂組成物の製造方法 - Google Patents

熱可塑性樹脂組成物の製造方法 Download PDF

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Publication number
WO2023234220A1
WO2023234220A1 PCT/JP2023/019772 JP2023019772W WO2023234220A1 WO 2023234220 A1 WO2023234220 A1 WO 2023234220A1 JP 2023019772 W JP2023019772 W JP 2023019772W WO 2023234220 A1 WO2023234220 A1 WO 2023234220A1
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WO
WIPO (PCT)
Prior art keywords
kneading
thermoplastic resin
barrel
zone
resin composition
Prior art date
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Ceased
Application number
PCT/JP2023/019772
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English (en)
French (fr)
Japanese (ja)
Inventor
和史 中沢
大 石田
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Polyplastics Co Ltd
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Polyplastics Co Ltd
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Filing date
Publication date
Application filed by Polyplastics Co Ltd filed Critical Polyplastics Co Ltd
Priority to CN202380044285.6A priority Critical patent/CN119300967A/zh
Priority to JP2024524829A priority patent/JP7792513B2/ja
Publication of WO2023234220A1 publication Critical patent/WO2023234220A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
    • B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • B29B9/14—Making granules characterised by structure or composition fibre-reinforced
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/64—Screws with two or more threads
    • B29C48/655—Screws with two or more threads having three or more threads
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material

Definitions

  • the present invention relates to a method for producing a thermoplastic resin composition containing a fibrous filler.
  • Thermoplastic resins have excellent performance such as moldability, mechanical properties, and weather resistance, so they are widely used for injection molding, various automobile parts, electric/electronic parts, etc.
  • various additives are added and used as resin compositions. For example, fibrous fillers such as glass fibers are added to improve mechanical strength.
  • thermoplastic resin composition containing a dispersed fibrous filler such as glass fiber
  • the thermoplastic resin and the fibrous filler are generally melt-kneaded using a twin-screw extruder.
  • Fibrous fillers are usually made into bundles (also called chopped strands) by applying a surface treatment agent or a sizing agent, converging a large number of fibers, and then cutting them into lengths of several mm. It is put into a twin-screw extruder in this condition. Then, during melt-kneading, the bundle of fibrous filler is defibrated, so that the fibrous filler can be dispersed in the thermoplastic resin (see Patent Document 1).
  • Fibrous fillers that exist in an undefibrated state may cause nozzle clogging during injection molding or cause a decrease in strength when formed into molded products. It is desired that the bundle is sufficiently defibrated.
  • the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to provide a method for producing a thermoplastic resin composition that can sufficiently defibrate bundles of fibrous filler. It is in.
  • thermoplastic resin composition comprising a kneading step of melt-kneading a thermoplastic resin and a fibrous filler bundle in a barrel using a twin-screw extruder having a pair of screws in the barrel.
  • a manufacturing method Before the kneading step, a preliminary kneading step of melt-kneading the thermoplastic resin and the aggregate of the fibrous filler in the barrel, Performing the pre-kneading step in a pre-kneading zone located upstream of the kneading zone in which the kneading step is performed, A kneading disk is attached to the pair of screws in the pre-kneading zone, A method for producing a thermoplastic resin composition, wherein the maximum distance between the tip of the kneading disk and the opposing position of the tip of the kneading disk on the inner wall of the barrel is 1.00 to 4.00 mm. .
  • thermoplastic resin composition according to (1) above, wherein the thermoplastic resin is a polyarylene sulfide resin or a polybutylene terephthalate resin.
  • thermoplastic resin composition according to (1) or (2) above, wherein the kneading disk in the pre-kneading zone is an eccentric three-row kneading disk.
  • thermoplastic resin composition according to any one of (1) to (3) above, wherein the length of the pre-kneading zone is 0.5D to 5.0D.
  • thermoplastic resin composition in which a bundle of fibrous fillers can be sufficiently defibrated.
  • FIG. 1 is a conceptual diagram showing the configuration of a twin-screw extruder used in the method for producing a thermoplastic resin composition of this embodiment.
  • FIG. 2 is a partial cross-sectional view showing an example of the arrangement of kneading disks (two stripes) in the barrel of the preliminary kneading zone.
  • FIG. 3 is a partial sectional view showing an example of the arrangement of the kneading disks (three eccentric stripes) in the barrel of the pre-kneading zone.
  • the method for producing a thermoplastic resin composition of the present embodiment involves melt-kneading a thermoplastic resin and a fibrous filler bundle in a barrel using a twin-screw extruder having a pair of screws in the barrel.
  • a method for producing a thermoplastic resin composition including the steps. And, before the kneading step, a preliminary kneading step is included in which the thermoplastic resin and the bundle of fibrous filler are melt-kneaded in advance in a barrel. Further, the pre-kneading step is performed in a pre-kneading zone located upstream of the kneading zone in which the kneading step is performed.
  • kneading disks are attached to the pair of screws in the pre-kneading zone, and the maximum value of the distance between the tip of the kneading disk and the opposing position of the tip of the kneading disk on the inner wall of the barrel is 1. 00 to 4.00 mm.
  • a twin-screw extruder is used to melt and knead a thermoplastic resin and a bundle of fibrous filler.
  • Examples of the twin-screw extruder include one having the configuration shown in FIG. 1.
  • the twin-screw extruder 10 shown in FIG. 1 includes a first supply port 14 including a hopper 12 for charging thermoplastic resin, a plasticization zone 16, a second supply port 18, a pre-kneading zone 20, a kneading zone 22, and A die portion 24 is provided.
  • the granular thermoplastic resin fed into the first supply port 14 from the hopper 12 is solidly transported to the plasticization zone 16 and melted.
  • plasticization zone 16 there is no limit to the element configuration of the plasticization zone 16 as long as most of the thermoplastic resin is expected to be melted.
  • One set can be combined to form a plasticization zone.
  • the second supply port 18 has, for example, a side feeder screw, from which a bundle of fibrous filler such as a glass fiber bundle can be supplied to the twin-screw extruder 10.
  • the pre-kneading zone 20 is located upstream of the kneading zone 22 and is a zone where a composition containing a thermoplastic resin and a fibrous filler aggregate is preliminarily melt-kneaded before being kneaded in the kneading zone 22. .
  • Pre-kneading is performed in the kneading zone 22 by actively mixing the molten or unmelted thermoplastic resin and the fibrous filler bundle before melt-kneading the molten resin and the fibrous filler bundle. This is carried out in order to bring the fibrous filler into contact with (wet) and disperse the fibrous filler bundle to a certain degree of uniformity.
  • the preliminary kneading zone 20 serves to disperse the fiber bundles of the fibrous filler in the molten thermoplastic resin, and to facilitate the fibrillation of the fiber bundles in the kneading zone 22 located on the downstream side.
  • the kneading zone 22 is located downstream of the pre-kneading zone 20, and is a zone for melt-kneading a composition containing a thermoplastic resin and a fibrous filler aggregate that has been pre-kneaded.
  • the fiber bundles of the fibrous filler are defibrated and the fiber length is also controlled.
  • the fiber bundles of the fibrous filler are dispersed in the thermoplastic resin by melt-kneading in the preliminary kneading zone 20 as described above, they are easily defibrated in the kneading zone 22.
  • the kneading step is performed in a kneading zone within the barrel of a twin-screw extruder.
  • the pre-kneading step is performed in a pre-kneading zone located upstream of the kneading zone within the barrel of the twin-screw extruder.
  • the "upstream side" of the twin-screw extruder refers to the side where the thermoplastic resin is introduced.
  • the kneading disks are disposed at the tip of the kneading disks and on the inner wall of the barrel.
  • the maximum value of the distance between the tip and the opposing position is 1.00 to 4.00 mm. If the maximum value of the distance is less than 1.00 mm, the amount of the kneaded material of the aggregate of the molten resin and fibrous filler to which stress is applied is limited, and good dispersibility cannot be ensured in the entire kneaded material. It disappears.
  • the maximum value of the distance exceeds 4.00 mm, the amount of the kneaded mixture of molten resin and fibrous filler bundle to which stress is applied increases, but the stress applied becomes low, so the fibrous filler Defibration of the agent bundle becomes insufficient.
  • the maximum value of the distance is preferably 2.00 to 4.00 mm.
  • FIG. 2 shows the arrangement of kneading discs 34 and 36 attached to a pair of screws (not shown) within the barrel 32.
  • the barrel 32 has a shape in which two cylindrical bodies are partially overlapped, and a screw is arranged in each of the two cylindrical bodies.
  • the pair of screws are rotated in the same or opposite directions within the barrel 32 by a driving means, and the axis of their rotational axes coincides with the center O of the circle when the cross section of the cylindrical body is viewed as a circle. .
  • the kneading disks 34, 36 have the same shape, and have an asymmetric shape with respect to the axis of rotation (the center of the inner walls 38, 40 of the barrel 32, respectively, when viewed as a circle). More specifically, in the case of the kneading disk 34 located on the left side of FIG. 2, the distance between the upper tip and the opposing position of the upper tip on the inner wall 38 of the barrel 32 is d1. The maximum value of the distance d1 is 1.00 to 4.00 mm. On the other hand, the distance between the lower tip of the kneading disk 34 and the opposing position of the lower tip on the inner wall of the barrel 32 is shorter than the distance d1 , for example, 0.50 mm or less.
  • the tip of the kneading disk 34 is located at a distance d1 from the inner wall 38 of the barrel 32, it is possible to apply stress uniformly or nearly uniformly to the entire bundle of fibrous filler.
  • the lower tip is close to the inner wall 38 of the barrel 32 and has the function of cleaning the inner wall 38 of the barrel 32 as the kneading disk 34 rotates.
  • the kneading disc 36 on the right side of FIG. 2 is also similar to the kneading disc 34 on the left side. It should be noted that the entire tip of the kneading disk may be spaced apart from the opposing position of the inner wall of the barrel.
  • FIG. 3 shows the arrangement of kneading discs 44, 46 attached to a pair of screws (not shown) within the barrel.
  • the kneading disks 44 and 46 have a substantially equilateral triangular shape with three-fold rotational symmetry, and the center of symmetry is point b.
  • the rotation axis of the screw that is, the rotation center of the kneading disks 44 and 46 is at point a, which is different from the position of point b, which is the center of symmetry. That is, the kneading disks 44 and 46 are mounted so as to rotate eccentrically with respect to the rotation axis of the screw. Therefore, in the case of the kneading disk 44, the distance d2 between the tip and the opposing position of each tip on the inner wall 48 of the barrel is constant regardless of the rotation of the screw. The maximum value of the distance d2 is 1.00 to 4.00 mm. Similarly to the kneading disk 44 on the left side of FIG. 3, the distance between the opposing positions of each tip on the inner wall 50 of the barrel is constant regardless of the rotation of the screw.
  • the present embodiment is not limited to the form shown in FIGS. 2 and 3. That is, there is no particular limitation as long as the maximum distance between the tip of the kneading disk and the inner wall of the barrel in the pre-kneading zone 20 can be maintained at 1.00 to 4.00 mm. Any one of a normal kneading disc, a shoulder cut kneading disc, an eccentric kneading disc, etc. may be used.
  • the thickness of the kneading disk in the preliminary kneading zone 20 is preferably 0.1D to 0.5D, more preferably 0.15D to 0.4D.
  • D means the inner diameter of the barrel.
  • the thickness of the kneading disk is described as 0.5D, it means that the thickness is 0.5 times the inner diameter of the barrel.
  • the length of the pre-kneading zone 20 is preferably 0.5D to 5.0D, more preferably 1.0D to 4.0D, even more preferably 1.5D to 4.0D.
  • the length of the pre-kneading zone 20 is 0.5D to 5.0D, the aggregate of the fibrous filler can be sufficiently dispersed in the thermoplastic resin, and the length of the screw is excessively long. This makes it easier to secure other zones. Note that as long as the total zone length is 0.5D to 5.0D, the kneading zone may exist singly or may be divided into a plurality of zones.
  • the kneading disk in the pre-kneading zone 20 may be any one of a forward kneading disk, a reverse kneading disk, and an orthogonal kneading disk, but the forward kneading disk is preferable in terms of residence time and heat generation.
  • kneading disk in the pre-kneading zone 20 Preferred specific examples of the kneading disk in the pre-kneading zone 20 are shown below, but if the maximum distance between the tip of the kneading disk and the inner wall of the barrel is within a predetermined range, it may differ from the example shown below. may be used. Further, the following kneading disks may be used alone or in combination.
  • the distance between the tip of the kneading disk and the opposing position of the tip of the kneading disk on the inner wall of the barrel is referred to as "distance between the tip and the inner wall of the barrel.”
  • One set of two-thread kneading disc elements with a length of 1.0D (3) 1.0D in which the distance between the tip and the inner wall of the barrel is 0.90mm, 3.80mm, and 3.80mm on each side (Disc thickness 0.2D x 5 discs, shift angle 45°)
  • Three sets of progressive eccentric three-thread elements are used to make a length of 3.0D (4) The distance between the tip and the inner wall of the barrel is 0 on each side. .90mm, 3.80mm, 3.80mm 1.0D (disc thickness 0.2D x 5 discs, shift angle 45°) progressive eccentric three-thread elements are used to create a length of 1.0D.
  • Q/Ns is 0. It is preferably from .5 to 4.0, more preferably from 0.6 to 3.0. Further, from the same viewpoint, the inner diameter of the barrel is preferably 40 to 85 mm.
  • the kneading zone 22 is not particularly limited as long as it has a commonly used element having a kneading disk effective for defibrating bundles of fibrous filler.
  • the kneading disks in the kneading zone 22 may be any of forward kneading disks, reverse kneading disks, and orthogonal kneading disks.
  • Specific examples of the elements in the kneading zone 22 include a two-thread kneading disk, an eccentric three-thread kneading disk, and a reverse feed screw element having a single flight section in which a plurality of notches are formed.
  • thermoplastic resin composition of this embodiment Each component used in the method for producing the thermoplastic resin composition of this embodiment will be described below.
  • thermoplastic resin In this embodiment, general-purpose plastics and engineering plastics can be used as the thermoplastic resin.
  • thermoplastic resins include polyarylene sulfide resins (PAS) such as polyphenylene sulfide resin (PPS), polybutylene terephthalate resin (PBT), polyacetal resin (POM), liquid crystal polymer (LCP), polyethylene terephthalate resin (PET), Examples include polypropylene (PP) and polyamide resin (PA).
  • PPS polyarylene sulfide resin
  • PBT polybutylene terephthalate resin
  • POM polyacetal resin
  • LCP liquid crystal polymer
  • PET polyethylene terephthalate resin
  • PA polypropylene
  • polyamide resin PA
  • Fibrous filler examples include glass fiber, carbon fiber, silicon carbide fiber, alumina fiber, silicon carbide whisker, silicon nitride whisker, potassium titanate whisker, and wollastonite. Among these, when glass fiber is used, the effect of the manufacturing method of this embodiment is remarkable.
  • thermoplastic resins such as lubricants, mold release agents, antistatic agents, surfactants, flame retardants, organic polymer materials, inorganic or organic
  • lubricants such as lubricants, mold release agents, antistatic agents, surfactants, flame retardants, organic polymer materials, inorganic or organic
  • Examples 1 to 11, Comparative Examples 1 to 5 In each of the Examples and Comparative Examples, 100 parts by mass of polyphenylene sulfide resin was added to the twin-screw extruder (extruder A or B) shown in Tables 1 and 2 from the first input part, and glass fiber (fibrous 66.7 parts by mass of filler) were added and melt-kneaded under the extrusion conditions (conditions 1 to 4) shown in Table 1 to obtain resin pellets.
  • the twin-screw extruder used was a twin-screw extruder having the configuration shown in FIG.
  • the preliminary kneading zone 20 and the kneading zone 22 had the configurations shown in Tables 1 and 2.
  • the preliminary kneading zone 20 was not provided, and in Comparative Example 5, the kneading zone 22 was not provided. That is, in Comparative Examples 1 and 5, the kneading element was not provided at the pre-kneading zone 20 and the kneading zone 22, but a feeding element was used instead.
  • the details of the eccentric three-row or two-row kneading disk (two-row KD) in the pre-kneading zone 20 and a or b in the kneading zone 22 are as described below.
  • Extruder Extruder
  • Extruder A Japan Steel Works, Ltd., TEX44 ⁇ II (cylinder diameter: 47mm)
  • Extruder B Japan Steel Works, Ltd., TEX65 ⁇ II (cylinder diameter: 69mm)
  • Condition 1 ⁇ Cylinder temperature: 300°C ⁇ Discharge amount per unit time: 150kg/hr ⁇ Screw rotation speed: 220 rpm (2)
  • Condition 2 ⁇ Cylinder temperature: 300°C ⁇ Discharge amount per unit time: 230kg/hr ⁇ Screw rotation speed: 338 rpm (3)
  • Condition 3 ⁇ Cylinder temperature: 300°C ⁇ Discharge amount per unit time: 230kg/hr ⁇ Screw rotation speed: 298 rpm (4)
  • Condition 4 ⁇ Cylinder temperature: 300°C ⁇ Discharge amount per unit time: 400kg/hr ⁇ Screw rotation speed: 187 rpm
  • Gap between three one-sided tips and barrel 0.90 mm each, maximum clearance in the table, maximum clearance in the table Element length: 1.0D (disc thickness 0.2D x 5 discs, shift angle 45°) ⁇ Nijo kneading disc (Nijo KD)
  • One or more progressive two-row kneading elements having the following shapes were used so that the preliminary kneading section was 3.0D.
  • FK, CK, and BK are screw elements consisting of five double-thread kneading disks with a thickness of 0.2D, FK has a forward feed shift angle of 45 degrees, CK has a shift angle of 90 degrees, and BK has a reverse feed shift angle. It is 45 degrees.
  • BMS indicates a reverse feed screw element having a single flight portion in which 13 arc-shaped notches are formed. Further, the numerical value in parentheses for each element indicates the thickness.
  • Polyarylene sulfide resin PPS resin manufactured by Kureha Co., Ltd., Fortron KPS (melt viscosity: 130 Pa ⁇ s (shear rate: 1200 sec -1 , 310°C)) (Measurement of melt viscosity of PPS resin)
  • the melt viscosity of the above PPS resin was measured as follows. The melt viscosity was measured using a Capillograph manufactured by Toyo Seiki Seisakusho Co., Ltd. using a flat die with a diameter of 1 mm and a length of 20 mm as a capillary at a cylinder temperature of 310° C. and a shear rate of 1200 sec -1 .
  • Examples 12 to 18, Comparative Examples 6 to 9 In each example and comparative example, the PPS resin was changed to the polybutylene terephthalate resin shown below, and 43 parts by mass of glass fiber (fibrous filler) was added to 100 parts by mass of the polybutylene terephthalate resin.
  • Resin pellets were obtained in the same manner as in Example 1, except that the extrusion conditions, pre-kneading element, maximum clearance, length of the pre-kneading zone, and kneading element were as shown in Tables 3 and 4. Further, using the obtained resin pellets, the number of undefinated glass fibers was evaluated in the same manner as in Example 1. The evaluation results are shown in Tables 3 and 4.
  • PBT resin manufactured by Polyplastics Co., Ltd., PBT resin (intrinsic viscosity (measured in o-chlorophenol at a temperature of 35°C): 0.8 dL/g))

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PCT/JP2023/019772 2022-06-01 2023-05-26 熱可塑性樹脂組成物の製造方法 Ceased WO2023234220A1 (ja)

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JPH1016033A (ja) * 1996-07-05 1998-01-20 Kobe Steel Ltd 二軸混練押出機
US6783270B1 (en) * 2000-07-31 2004-08-31 Steer Engineering (P) Limited Fractional and higher lobed co-rotating twin-screw elements
JP2006150936A (ja) * 2004-10-26 2006-06-15 Sumitomo Chemical Co Ltd 熱可塑性エラストマー組成物の製造方法
JP2020040356A (ja) * 2018-09-13 2020-03-19 三菱エンジニアリングプラスチックス株式会社 樹脂ペレットの製造方法
JP2022099828A (ja) * 2020-12-23 2022-07-05 ポリプラスチックス株式会社 熱可塑性樹脂組成物の製造方法
WO2022168928A1 (ja) * 2021-02-03 2022-08-11 旭化成株式会社 樹脂組成物の製造方法

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JP5406173B2 (ja) * 2010-12-28 2014-02-05 ポリプラスチックス株式会社 熱可塑性樹脂組成物の製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1016033A (ja) * 1996-07-05 1998-01-20 Kobe Steel Ltd 二軸混練押出機
US6783270B1 (en) * 2000-07-31 2004-08-31 Steer Engineering (P) Limited Fractional and higher lobed co-rotating twin-screw elements
JP2006150936A (ja) * 2004-10-26 2006-06-15 Sumitomo Chemical Co Ltd 熱可塑性エラストマー組成物の製造方法
JP2020040356A (ja) * 2018-09-13 2020-03-19 三菱エンジニアリングプラスチックス株式会社 樹脂ペレットの製造方法
JP2022099828A (ja) * 2020-12-23 2022-07-05 ポリプラスチックス株式会社 熱可塑性樹脂組成物の製造方法
WO2022168928A1 (ja) * 2021-02-03 2022-08-11 旭化成株式会社 樹脂組成物の製造方法

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