JP2019064036A5 - - Google Patents
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- JP2019064036A5 JP2019064036A5 JP2017189281A JP2017189281A JP2019064036A5 JP 2019064036 A5 JP2019064036 A5 JP 2019064036A5 JP 2017189281 A JP2017189281 A JP 2017189281A JP 2017189281 A JP2017189281 A JP 2017189281A JP 2019064036 A5 JP2019064036 A5 JP 2019064036A5
- Authority
- JP
- Japan
- Prior art keywords
- foam
- producing
- molded article
- resin composition
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000011342 resin composition Substances 0.000 claims description 12
- 238000010097 foam moulding Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005992 thermoplastic resin Polymers 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 229920002725 Thermoplastic elastomer Polymers 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000011256 inorganic filler Substances 0.000 claims description 2
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims description 2
- 229920000412 polyarylene Polymers 0.000 claims description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims description 2
- 230000004580 weight loss Effects 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 1
Description
本発明は、以下に関する。
［１］熱可塑性樹脂を含有する樹脂組成物を射出発泡成形する工程を有し、前記樹脂組成物が、無機フィラーを全樹脂組成物中２０質量％以上含有し、前記射出発泡成形する工程において、前記樹脂組成物に、圧力が１ＭＰａ以上１０ＭＰａ以下の気体を、前記射出発泡成形する工程で得られる発泡成形品の、金型寸法から算出される基準重量に対する重量減少率が３％以上１２％以下となる量で接触させる、発泡成形品の製造方法。
［２］前記樹脂組成物の溶融粘度が１００Ｐａ・ｓ以上６００Ｐａ・ｓ以下である、［１］に記載の発泡成形品の製造方法。
［３］前記樹脂組成物が、熱可塑性エラストマーを熱可塑性樹脂１００質量部に対して１質量部以上５０質量部以下含む、［１］又は［２］に記載の発泡成形品の製造方法。
［４］前記熱可塑性樹脂が、ポリアリーレンサルファイド樹脂、ポリエチレンテレフタレート樹脂、ポリブチレンテレフタレート樹脂から選択される少なくとも一種を含有する、［１］から［３］のいずれかに記載の発泡成形品の製造方法。
［５］重量減少率が０％の基準成形品に対するＩＳＯ１７８に準拠して測定した曲げ強さの保持率が８０％以上である発泡成形品を得る、［１］から［４］のいずれかに記載の発泡成形品の製造方法。
［６］前記射出発泡成形する工程で得られた発泡成形品を１００〜３５０℃で１〜１２０分間加熱処理する工程を有する、［１］から［５］のいずれかに記載の発泡成形品の製造方法。
［７］前記加熱処理する工程後の発泡成形品の表面に膨出部が形成されていない、［６］に記載の発泡成形品の製造方法。
［８］配管部品用の発泡成形品を得る、［１］から［７］のいずれかに記載の発泡成形品の製造方法。
The present invention relates to the following.
[1] In the step of injection-foaming a resin composition containing a thermoplastic resin, wherein the resin composition contains 20% by mass or more of an inorganic filler in the total resin composition, The resin composition is provided with a gas having a pressure of 1 MPa or more and 10 MPa or less, and the weight reduction rate of the foam-molded article obtained in the step of injection foam-molding is 3% or more and 12% or more with respect to the reference weight calculated from the mold size. A method for producing a foam-molded article, which comprises contacting the following amounts.
[2] The method for producing a foam-molded article according to [1], wherein the resin composition has a melt viscosity of 100 Pa·s or more and 600 Pa·s or less.
[3] The method for producing a foam-molded article according to [1] or [2], wherein the resin composition contains a thermoplastic elastomer in an amount of 1 part by mass or more and 50 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin.
[4] Production of the foam-molded article according to any one of [1] to [3], wherein the thermoplastic resin contains at least one selected from polyarylene sulfide resin, polyethylene terephthalate resin, and polybutylene terephthalate resin. Method.
[5] A foam molded product having a flexural strength retention of 80% or more measured according to ISO178 with respect to a standard molded product having a weight reduction rate of 0% is obtained. [1] to [4] A method for producing the foam-molded article described.
[6] The foam-molded article according to any one of [1] to [5], which has a step of heat-treating the foam-molded article obtained in the step of injection foam-molding at 100 to 350° C. for 1 to 120 minutes. Production method.
[7] The method for producing a foam-molded article according to [6], wherein no bulging portion is formed on the surface of the foam-molded article after the heat treatment step.
[8] The method for producing a foam-molded article according to any one of [1] to [7], wherein a foam-molded article for a piping component is obtained.
Claims (8)
前記樹脂組成物が、無機フィラーを全樹脂組成物中２０質量％以上含有し、
前記射出発泡成形する工程において、前記樹脂組成物に、圧力が１ＭＰａ以上１０ＭＰａ以下の気体を、前記射出発泡成形する工程で得られる発泡成形品の、金型寸法から算出される基準重量に対する重量減少率が３％以上１２％以下となる量で接触させる、発泡成形品の製造方法。 Having a step of injection foam molding a resin composition containing a thermoplastic resin,
The resin composition contains an inorganic filler in an amount of 20% by mass or more in the entire resin composition,
In the injection foam molding step, a gas having a pressure of 1 MPa or more and 10 MPa or less in the resin composition is reduced in weight with respect to a reference weight calculated from mold dimensions of a foam molded article obtained in the injection foam molding step. A method for producing a foam-molded article, which comprises contacting in an amount of 3% or more and 12% or less.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017189281A JP6934384B2 (en) | 2017-09-29 | 2017-09-29 | Manufacturing method of foam molded products |
| PCT/JP2018/036339 WO2019065997A1 (en) | 2017-09-29 | 2018-09-28 | Method for manufacturing foam molded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017189281A JP6934384B2 (en) | 2017-09-29 | 2017-09-29 | Manufacturing method of foam molded products |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2019064036A JP2019064036A (en) | 2019-04-25 |
| JP2019064036A5 true JP2019064036A5 (en) | 2020-07-30 |
| JP6934384B2 JP6934384B2 (en) | 2021-09-15 |
Family
ID=65903053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017189281A Active JP6934384B2 (en) | 2017-09-29 | 2017-09-29 | Manufacturing method of foam molded products |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6934384B2 (en) |
| WO (1) | WO2019065997A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023100796A1 (en) * | 2021-12-03 | 2023-06-08 | 住友化学株式会社 | Liquid-crystal polyester composition and molded object thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004122367A (en) * | 2002-09-30 | 2004-04-22 | Idemitsu Petrochem Co Ltd | Insert-molded object and its manufacturing method |
| JP2004216579A (en) * | 2003-01-09 | 2004-08-05 | Asahi Kasei Chemicals Corp | Molded product and its injection molding method |
| JP2004268391A (en) * | 2003-03-07 | 2004-09-30 | Asahi Kasei Chemicals Corp | Resin housing |
| JP5801072B2 (en) * | 2011-03-16 | 2015-10-28 | バンドー化学株式会社 | Foam gear |
| WO2013027615A1 (en) * | 2011-08-19 | 2013-02-28 | 日立マクセル株式会社 | Kneading device, method for producing thermoplastic resin molded body, and foam injection molding method |
| JP2013208843A (en) * | 2012-03-30 | 2013-10-10 | Hitachi Maxell Ltd | Kneader and method for manufacturing thermoplastic resin molding |
-
2017
- 2017-09-29 JP JP2017189281A patent/JP6934384B2/en active Active
-
2018
- 2018-09-28 WO PCT/JP2018/036339 patent/WO2019065997A1/en active Application Filing
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