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JP-2026075540-A - Polyarylene ether ketone resin composition, resin molded articles, and methods for producing the same.

JP2026075540AJP 2026075540 AJP2026075540 AJP 2026075540AJP-2026075540-A

Abstract

[Problem] To provide a polyarylene ether ketone resin composition that can avoid the problem of corrosive gas generation during melting, allows control of crystallization time, and has excellent moldability. [Solution] A polyarylene ether ketone resin composition comprising a polyarylene ether ketone resin (A) and an inorganic carbonate (B), wherein the amount of the inorganic carbonate is 0.04 to 6 parts by mass per 100 parts by mass of the total of the polyarylene ether ketone resin (A) and the inorganic carbonate (B). [Selection Diagram] None

Inventors

  • 渡邉 和浩
  • 岩楯 展行
  • 古沢 高志

Assignees

  • ＤＩＣ株式会社

Dates

Publication Date
20260508
Application Date
20241022

Claims (10)

  1. A polyarylene ether ketone resin composition comprising a polyarylene ether ketone resin (A) and an inorganic carbonate (B), wherein the amount of the inorganic carbonate is 0.04 to 6 parts by mass per 100 parts by mass of the total amount of the polyarylene ether ketone resin (A) and the inorganic carbonate (B).
  2. The polyarylene ether ketone resin composition according to claim 1, wherein the polyarylene ether ketone resin (A) has repeating units represented by the following general formula (1). During the ceremony, Y is a -C (=O)- or single bond, R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms. n is an integer between 0 and 3.
  3. The polyarylene ether ketone resin composition according to claim 1, wherein the polyarylene ether ketone resin (A) has repeating units represented by the following general formula (2). During the ceremony, m is an integer between 0 and 2.
  4. The polyarylene ether ketone resin composition according to claim 1, having repeating units represented by the general formula (1) and repeating units represented by the general formula (2).
  5. The polyarylene ether ketone resin composition according to claim 1, wherein the inorganic carbonate (B) is one or more selected from alkali metal salts, alkaline earth metal salts, and salts of elements in Group 12 of the periodic table.
  6. The polyarylene ether ketone resin composition according to claim 1, wherein the polyarylene ether ketone resin composition further contains an inorganic filler (C) (excluding the inorganic filler which is the inorganic carbonate (B)).
  7. The polyarylene ether ketone resin composition according to claim 1, wherein the viscosity change rate represented by the following formula is in the range of -30% to 30%. Viscosity change rate [%] = {(V 30 - V 6 ) / V 6 } × 100 Here, V 30 is the melt viscosity (unit: Pa·s) measured using a flow tester after holding the polyarylene ether ketone resin composition at a temperature 30°C above its melting point for 30 minutes, under the conditions of a load of 1.96 × 10⁶ Pa and L/D = 10 (mm) / 1 (mm). V6 is the melt viscosity (unit: Pa·s) measured in the same manner as V30 after holding the polyarylene ether ketone resin composition at a temperature 30°C above its melting point for 6 minutes.
  8. A polyarylene ether ketone resin molded article obtained by melt-molding the polyarylene ether ketone resin composition described in any one of claims 1 to 7.
  9. A method for producing a polyarylene ether ketone resin composition, comprising the step of mixing a polyarylene ether ketone resin (A) and an inorganic carbonate (B), wherein the amount of inorganic carbonate (B) is 0.04 to 6 parts by mass per 100 parts by mass of the total amount of the polyarylene ether ketone resin (A) and inorganic carbonate (B).
  10. A method for producing a polyarylene ether ketone resin molded article, comprising the step of melt-molding a polyarylene ether ketone resin composition according to any one of claims 1 to 7.

Description

This invention relates to polyarylene ether ketone resin compositions, resin molded articles, and methods for producing the same. Polyarylene ether ketone resin (sometimes abbreviated as "PAEK resin") exhibits excellent heat resistance, chemical resistance, and toughness, and is widely used in applications such as electrical and electronic components, automotive parts, medical components, textiles, and films. Regarding PAEK resins, a polymer with a uniform structure and as few impurities as possible is desirable to achieve high heat resistance. Conventionally, development focused primarily on PAEK resins with a single repeating unit. However, in recent years, PAEK resins incorporating both rigid and tough repeating units and flexible repeating units have been proposed to improve moldability and other aspects (for example, Patent Documents 1 and 2). Furthermore, regarding molding processes, when melting PAEK resin at high temperatures for molding, it has been proposed to add phosphate to stabilize the PAEK resin in its molten state (for example, Patent Documents 3 and 4). International Publication No. 2021/014800International Publication No. 2019/142942Japanese Patent Publication No. 2023-60050International Publication No. 2023/008365 The following describes in detail one embodiment of the present invention, but the scope of the present invention is not limited to the embodiment described herein, and various modifications can be made without departing from the spirit of the invention. Furthermore, if multiple upper and lower limits are specified for a particular parameter, any combination of these upper and lower limits can be used to create a suitable numerical range. <Polyarylene ether ketone resin composition> The polyarylene ether ketone resin composition of the present invention (hereinafter sometimes abbreviated as "PAEK resin composition") comprises a PAEK resin (A) and an inorganic carbonate (B). [PAEK resin (A)] PAEK resin (A) is a resin that includes structures in which an aromatic ring and an oxygen atom are bonded, and structures in which an aromatic ring and a carbonyl group are bonded, and includes poly(ether ketone) (PEK), poly(ether ether ketone) (PEEK), poly(ether ether ketone ketone) (PEEKK), poly(ether ketone ketone) (PEKK), poly(ether ether ketone ketone) (PEKEKK), poly(ether ether ketone ether ketone) (PEEK), poly(ether ether ether ketone) (PEEK), poly(ether diphenyl ether ketone) (PEDEK), etc. PAEK resin (A) may contain repeating units represented by the following formula (1). During the ceremony, Y is a -C (=O)- or single bond, R is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms (such as a methyl group or an ethyl group), and is preferably a hydrogen atom. n is an integer between 0 and 3, preferably 0 or 1. The repeating unit represented by equation (1) may be a single unit or a combination of two or more units. In the case of a combination of two or more units, the arrangement of the repeating units may be random or block-like. In equation (1), the unit enclosed by n is preferably one that is connected at the para level. A repeating unit containing such a unit can be represented by equation (1-1). In the formula, Y, R, and n are the same as in formula (1), and the preferred example is the same as in formula (1). In formula (1), the carbonyl group is preferably bonded to the unit enclosed by n at the para or meta position. Repeating units containing such bonds can be represented by formulas (1-A) and (1-B), respectively. In the formula, Y, R, and n are the same as in formula (1), and the preferred example is the same as in formula (1). Formulas (1-A) and (1-B) are preferably those in which the units enclosed by n are joined at the para level. Repeating units containing such units can be represented by formulas (1-1-A) and (1-1-B), respectively. In the formula, Y, R, and n are the same as in formula (1), and the preferred example is the same as in formula (1). When Y is -C (=O), equations (1-1-A) and (1-1-B) can be expressed as equations (1-1-A-α) and (1-1-B-α), respectively. In the formula, R and n are the same as in formula (1), and the preferred example is the same as in formula (1). For example, in formula (1-1-A-α), the repeating units in which n is 0 or 1 and R is a hydrogen atom are as follows: For example, in formula (1-1-B-α), the repeating units in which n is 0 or 1 and R is a hydrogen atom are as follows: When Y is a single bond, equations (1-1-A) and (1-1-B) can be expressed as (1-1-A-β) and (1-1-B-β), respectively. In the formula, R and n are the same as in formula (1), and the preferred example is the same as in formula (1). For example, in formula (1-1-A-β), the repeating units in which n is 0 or 1 and R is a hydrogen atom are as follows: For example, in formula (1-1-B-β), the repeating units in which n is 0 or 1 and R is a hydrogen atom are as follows: PAEK resin may contain repeating units represented by formula (2). During the ceremony, m is an inte