| プロパティ | PPA GF30（Amodel A-1133HS） | PA66 GF30 | PA46 GF30（スタニル） | PPS GF40 |
|---|---|---|---|---|
| 密度 | 1.47 g/cm³ | 1.36 g/cm³ | 1.41 g/cm³ | 1.65 g/cm³ |
| 融点 | 310～325°C | 260°C | 295°C | 280°C |
| HDT（1.80 MPa） | 300～310°C | 245～255°C | 285°C | 265°C |
| 引張弾性率（乾燥時） | 12,000 MPa | 9,500～10,500 MPa | 10,000 MPa | 14,000～15,000 MPa |
| 引張弾性率（調整後） | 約11,500 MPa | 6,000～7,000 MPa | 6,000 MPa | 約14,000 MPa |
| 引張強度（乾燥時） | 200 MPa | 180 MPa | 180 MPa | 190 MPa |
| 引張強度（調整後） | 約180 MPa | 120 MPa | 120 MPa | ~190 MPa |
| 吸水率（23°C / 50% RH） | 0.3–0.5% | 1.5–2.0% | 2.6% | 0.03% |
| 成形収縮（フロー／横方向） | 0.2% / 0.6% | 0.4% / 1.1% | 0.5% / 1.3% | 0.3% / 0.8% |
| 連続使用温度（5000時間） | 150～170°C | 120～130°C | 163°C | 200～220°C |
| 1kgあたりの相対コスト | 高い | 低～中程度 | 中～高 | 高い |
重要なポイント：条件付き弾性係数の利点
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
「条件付き」の引張弾性率の行をご覧ください。こここそが、PPAが高価格である理由を裏付けている部分です。.
- PA66 GF30 湿気条件下に置かれた後、その乾燥時の剛性が30～40%低下する――これは、湿度の高い環境下での精密用途において、よく知られた課題である。.
- PA46 GF30 さらに低下する（40%）。これは、アミド基の密度が高いため、PA66よりも吸湿性が高くなるためである。.
- PPA GF30 コンディショニング後も乾燥時の剛性の95%+を維持するのは、主鎖に含まれる芳香環が、水分子とアミド基との水素結合を阻害するためである。.
- PPS GF40 湿気の影響をほとんど受けませんが、PPAの2～3倍のコストがかかります。.
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
成形直後の乾燥状態から最終使用時の湿度サイクルに至るまで、厳しい公差を維持しなければならない構造部品において、PPAの調整済み弾性率という利点が決定的な役割を果たすことがよくあります。.
商用PPAグレードセレクター
| 製造元 | ブランド | グレード | GF % | 主な特徴 | 代表的な用途 |
|---|---|---|---|---|---|
| ソルベイ | Amodel | A-1133 HS | 33% | 汎用 GF33、熱安定化処理済み | 自動車用コネクタ、ハウジング |
| ソルベイ | Amodel | AS-1133 HS | 33% | 厚肉（3 mm超）に最適化 | ポンプハウジング、バルブボディ |
| ソルベイ | Amodel | A-1145 HS | 45% | 高剛性、熱安定化 | 金属部品の交換、構造用ブラケット |
| ソルベイ | Amodel | A-1565 HS | 65%（GF＋ミネラル） | 最高の剛性、反りが少ない | 大型構造用ハウジング |
| ソルベイ | Amodel | AE-1133 | 33% | 電気的特性に最適化された、高CTI | EV用コネクタ、バスバー絶縁体 |
| ソルベイ | Amodel | A-4122 NL WH | 22% | LEDリフレクター、高白色度 | 自動車用照明、LEDチップ |
| デュポン | Zytel HTN | 51G35HSL | 35% | 標準GF35、熱安定化処理済み | エンジンカバー、オイルパン |
| デュポン | Zytel HTN | 51G45HSL | 45% | 高剛性のPA6T系 | ボンネット下の構造部品 |
| デュポン | Zytel HTN | 52G35HSL | 35% | 6T/66コポリマー、流動性が向上 | 薄肉コネクタ |
| デュポン | Zytel HTN | 54G15HSLR | 15% | GFが低く、延性が高い | スナップ式クリップ、フレキシブルマウント |
| クラレ | ジェネスター | GP2300 | 30% | PA9T GF30、水分含有量が最も低い | SMTコネクタ、精密電子機器 |
| クラレ | ジェネスター | GR2300 | 30% | PA9T GF30 FR V-0 | USBコネクタ、モバイル機器の内部構造 |
| EMS | グリヴォリー | GV-5H | 50% | 高強度PA6T/6I | 金属の取り替え、構造用 |
PPA処理ガイドライン
| パラメータ | 推奨値 | 備考 |
|---|---|---|
| 予備乾燥 | 120°Cで4時間 | 乾燥剤式乾燥機。目標水分量 < 0.05% |
| 溶融温度 | 320～340°C | グレードによって異なります。PA6Tグレードの場合は、最低330°Cが必要です。 |
| 金型温度 | 120～160°C | PA66よりも高い — 通常、油熱式金型が必要となる |
| 射出速度 | 中速から高速 | 早期の皮膜形成を防ぐための急速充填 |
| 加圧状態の維持 | 60～100 MPa | PPAは収縮率が低いため、適切に梱包してください |
| 滞留時間 | 最小化（5分以内） | 330°Cを超えると劣化リスクが高まる |
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
処理上の重要な注意事項：
- 金型の温度は絶対条件です： PPAが完全な結晶化を達成するには、金型温度を120～160°Cに設定する必要があります。標準的なナイロン成形時の金型温度（80°C）で成形すると、非晶質で寸法安定性に欠ける部品が得られます。通常、油熱式または電気カートリッジ加熱式の金型が必要となります。水冷式金型では、これらの温度に達することができません。.
- 高バレル温度の管理： 330°Cでは、標準的なナイロンのパージ手順が適用されますが、滞留時間は厳密に管理する必要があります。PPAの劣化により揮発性物質が発生するため、金型の通気性が十分であることを確認してください。.
- 収縮率が低く、予測可能： PPA’s shrinkage (0.2% flow direction for GF grades) is lower than both PA66 and PA46. This is an advantage for precision, but molds designed for PA66 may need gate and runner adjustments when switching to PPA.
- Fast crystallization once below Tm: Unlike PA46 (which crystallizes fast at all temperatures), PPA crystallizes rapidly once the melt drops below its melting point — but reaching that point requires the mold to be hot enough. This is the fundamental trade-off of PPA processing: high mold temp for crystallization vs. cycle time.
Key PPA Applications by Industry
| 産業 | 用途 | Why PPA Over PA66 or PA46 |
|---|---|---|
| 自動車用エンジン | Coolant pump housings, thermostat housings, oil filter bodies | Glycol resistance + dimensional stability at 120–150°C |
| Automotive Fuel | Fuel line connectors, quick-connects, sender unit bodies | Fuel resistance, low permeation, survives aggressive blended fuels |
| Automotive Transmission | Solenoid bobbins, sensor housings | Hot ATF resistance, stable dielectric properties |
| 電気・電子 | SMT connectors, USB-C housings, DDR sockets, SIM card trays | Survives 260°C reflow, retains dimensions, UL94 V-0 grades available |
| パワーエレクトロニクス | Busbar insulators, IGBT housings, EV charging connector bodies | High CTI (Comparative Tracking Index), arc resistance |
| コンシューマー・エレクトロニクス | Mobile device frames, smartwatch housings, laptop chassis inserts | Thin-wall flow, paintable, dimensionally stable across humidity range |
| インダストリアル | Pump wear rings, bearing cages, valve seats | Creep resistance + chemical compatibility |
PPA vs. PA46: Choosing Between the Two
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PPA and PA46 are often cross-shopped for the same applications. Here is the decision framework in practice:
| Selection Driver | Choose PPA When | Choose PA46 When |
|---|---|---|
| Moisture / humidity exposure | High humidity, outdoor, or condensing environments | Controlled indoor environments |
| 化学物質への曝露 | Fuel, glycol, aggressive automotive fluids | Primarily oil, grease, or dry applications |
| サイクルタイム | Longer cycles acceptable (mold 140°C) | Need fastest cycle times (mold 100°C works) |
| Thin-wall flow | Good (walls down to 0.4 mm) | Excellent (walls down to 0.2 mm) |
| Wear / friction | Good with internal lubricants | Excellent — PA46 is the benchmark |
| Dimensional tolerance in wet/dry cycling | PPA wins — almost no change from dry to conditioned | Expect 0.2–0.5% dimensional change |
| 金型費 | Higher (oil-heated mold required) | Moderate (water-heated mold usually sufficient) |
| Price / kg | より高い | 中程度 |
PPA Limitations: When to Look Elsewhere
- Tooling investment: PPA’s 120–160°C mold temperature requirement means water-heated molds cannot be used. If your tool shop is not equipped for oil or electric mold heating, you will incur tooling modification or replacement costs.
- Notch sensitivity: Standard GF PPA grades are notch-sensitive — impact in notched sections is lower than you might expect from the tensile data. For snap-fit parts requiring toughness, specify impact-modified grades (e.g., Zytel HTN 54G series).
- Above 180°C continuous: PPA’s continuous use ceiling is 150–170°C (UL RTI). For sustained exposure above 180°C you need PPS or PEEK.
- Cost-sensitive projects: PPA GF30 costs 3–5× PA66 GF30. Make sure you actually need the performance before specifying it.
What Is PPA?
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PPA (polyphthalamide) is a family of semi-aromatic polyamides. Unlike standard aliphatic nylons like PA6 and PA66 — whose polymer backbones are built entirely from aliphatic carbon chains — PPA incorporates aromatic rings (terephthalic or isophthalic acid) directly into the polymer backbone. This structural difference is what gives PPA its defining advantage: dramatically lower moisture absorption, better dimensional stability in humid environments, and 20–40% higher strength retention at temperature compared to PA66.
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
The PPA family is not a single polymer but a class of high-performance nylons defined by the aromatic diacid used. The main commercial variants are PA6T, PA9T, PA10T, and various copolymers sold under brand names including Solvay Amodel, DuPont Zytel HTN, Kuraray Genestar, and EMS Grivory.
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
For engineers and buyers searching for PPA datasheets, PA6T vs PA9T comparison, or PPA vs PA66 vs PA46 selection guidance, this page consolidates the key properties, grade families, processing parameters, and application data.
PPA Sub-Families: PA6T, PA9T, PA10T — What’s the Difference?
| Variant | Base Diol | Tm (°C) | 主な利点 | Typical Brands | Limitation |
|---|---|---|---|---|---|
| PA6T | Hexamethylene diamine (C6) | 310–325 | Highest HDT, broadest grade portfolio | Amodel (Solvay), Zytel HTN 51G (DuPont) | Pure PA6T Tm exceeds decomposition temp; always copolymerized |
| PA9T | Nonamethylene diamine (C9) | 306–315 | Lowest moisture absorption, excellent solder resistance | Genestar (Kuraray) | Higher cost, fewer FR grades |
| PA10T | Decamethylene diamine (C10) | 290–310 | Bio-based (castor oil derived), good flow | Vestamid HTplus (Evonik), Grivory (EMS) | Lower HDT than 6T, newer product |
| PA6T/66 | C6 + adipic acid | 290–310 | Improved flow, lower cost | Zytel HTN 52G, 54G (DuPont) | Higher moisture absorption than pure 6T |
| PA6T/6I | C6 + isophthalic acid | 非晶質 | Transparency, barrier properties | Selar PA (DuPont) | Not for structural applications |
PPA GF30 vs. Competing High-Temperature Materials
PPA Engineering Notes
PPA and PA66 Material Boundary
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PPA (polyphthalamide) is a semi-aromatic polyamide, while PA66 is a fully aliphatic polyamide. PPA incorporates aromatic acid groups (terephthalic/isophthalic acid) into its polymer backbone, which reduces moisture absorption from ~2% (PA66) to ~0.3–0.5% (PPA). This means PPA retains its mechanical properties in humid environments, withstands 30–50°C higher continuous-use temperatures, and resists chemical attack from fuels and glycols better than PA66. The trade-off is higher cost and more demanding processing requirements.
PPA Family and PA6T Grades
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PA6T is the most common sub-type of PPA, but not the only one. PPA is the family name; PA6T, PA9T, PA10T, and various copolymers (PA6T/66, PA6T/6I) are specific members. PA6T-based grades (Amodel, Zytel HTN 51G) dominate the automotive and industrial markets. PA9T (Genestar) has carved a niche in consumer electronics due to its even lower moisture absorption. Always check which base chemistry is used in a PPA grade — it affects moisture uptake, processing window, and cost.
PPA Drying Before Molding
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
Yes — and with tighter requirements than PA66. PPA must be dried to below 0.05% moisture content (PA66 allows up to 0.20%). At PPA’s 330°C processing temperature, any residual moisture causes hydrolysis that degrades molecular weight and produces visibly defective parts. Dry at 120°C for a minimum of 4 hours in a desiccant dryer.
PPA for SMT Components
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
Yes — this is one of PPA’s core markets. Standard PPA GF30 grades (especially PA9T Genestar) survive lead-free reflow soldering with peak temperatures of 260°C without blistering or warping. This is why PPA dominates SMT connector housings (USB, HDMI, DDR memory sockets, SIM card trays) where the plastic must survive the solder reflow oven and then maintain precise contact spacing in end-use humid environments.
PPA Tradeoffs Compared with PA46
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PPA processes slower (higher mold temperature required), costs more per kilogram, and is typically more notch-sensitive than PA46. PA46 cycles faster and flows better in very thin walls (< 0.3 mm). However, PPA's conditioned modulus advantage and chemical resistance often outweigh these processing trade-offs in demanding applications.
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
Need PPA pellets, technical datasheets, or grade selection support? We supply Amodel, Zytel HTN, and Genestar grades in GF10 to GF50 reinforcement levels. Contact us with your temperature, chemical exposure, and production volume requirements.
よくある質問
See our PA66 GF33 vs GF40 vs GF60 comparison for detailed grade selection and property data.
PPAと標準的なナイロンにはどのような違いがありますか？
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PPA（ポリフタラミド）は、ポリマーの主鎖に芳香族基を組み込んでいるため、ガラス転移温度が著しく高く（120～140°C、PA66は50～60°C）、耐薬品性に優れ、吸湿性もはるかに低い。 PPAは、標準的なナイロンとPEEKのような高コストの特殊ポリマーとの間のギャップを埋める存在です。.
自動車のエンジンルーム内での用途には、どのPPAグレードが最適でしょうか？
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PA6T/66およびPA6T/6I共重合体は、150～180°Cでの連続使用が求められるボンネット内部品に最適です。 ソルベイ社の「Amodel」やBASF社の「Ultramid Advanced N」といったグレードは、優れた冷却液および油に対する耐性を備えており、サーモスタットハウジング、ウォーターポンプ部品、チャージエアクーラーのエンドキャップなどに適しています。.
PPA PA9TとPA6Tはどのように異なるのですか？
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PA9T（ポリフタラミド9T）は、より長い鎖長のC9ジアミン（ノナンジアミン）を使用しているため、PA6Tに比べて吸湿性が低くなっています。加工温度がわずかに低く、流動性が優れているため、薄肉電気コネクタに適しています。一方、PA6Tは一般的に耐熱性が高くなっています。.
PA10Tのようなバイオ由来のPPAとはどのようなものですか？
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
PA10Tは、ヒマシ油由来のセバシン酸をモノマーの一つとして使用しており、部分的にバイオ由来（再生可能成分含有率40～60%）となっています。 PA10Tは、PA12と同様に優れた耐薬品性と低い吸湿性を備えつつ、より優れた耐熱性を有しています。自動車の燃料システムや冷却回路の部品において、その採用がますます広がっています。.
PPA polyphthalamide materials are chosen for high-heat applications that demand lower moisture absorption than standard nylons.
Last updated: June 2026. Datasheet values are typical ranges. Always verify specific grade properties with the manufacturer’s current technical data sheet. Amodel is a registered trademark of Solvay. Zytel HTN is a registered trademark of DuPont. Genestar is a registered trademark of Kuraray. Grivory is a registered trademark of EMS-Chemie.
