PA12 NA LCF黒色自動車部品用耐高温性

In long chain nylon, compared with other nylon materials, PA12 has great advantages, such as the lowest water absorption rate, the lowest density, low melting point, impact resistance, friction resistance, low temperature resistance, fuel resistance, good dimensional stability, good anti-noise effect. PA12 has the properties of PA6, PA66 and polyolefin (PE, PP) at the same time, achieving the combination of lightweight and physical and chemical properties, and has advantages in performance.

There are a large number of non-polar methylene groups in nylon 12, which makes nylon 12 molecular chain more compliant. The amide group in nylon 12 is polar, and the cohesion energy is very large, it can form hydrogen bonds between the molecules, so that the molecular arrangement is regular.

Therefore, nylon 12 has high crystallinity and high strength. Nylon 12 has low water absorption, good low temperature resistance, good air tightness, excellent alkali and oil resistance, medium resistance to alcohol, inorganic dilute acid and aromatic hydrocarbons, good mechanical and electrical properties, and is a self-flameout material.

1) Density

The relative density of nylon 12 is only 1.01-1.03, which is the smallest among all engineering plastics, which has a certain effect on reducing the quality of vehicles and reducing fuel consumption. When compared by unit volume, nylon 12 has advantages in price and performance.

2) Melting point

The melting point of nylon 12 is 172-178℃, slightly lower than nylon 11, can fully meet the requirements of automobile fuel pipe and brake pipe working environment temperature.

3) Water absorption

As we all know, the biggest disadvantage of nylon products is large water absorption, dimensional stability is difficult to ensure. And PA12 has the lowest water absorption rate of nylon products, this is due to the methylene molecules in nylon 12 greatly reduce the hydrophilic groups, which makes nylon 12 has a great advantage.

4) Impact strength

Impact strength is an important technical index, especially for nylon 12 pipe often exposed to air. Nylon 12 under -20℃ and -40℃ according to the standard test, no fracture phenomenon, fully meet the requirements of use. Nylon 12 has excellent impact resistance.

5) Low temperature performance

Nylon 12 has the lowest brittleness temperature of -70 degrees Celsius, so it can be widely used in low-temperature resistant parts.

6) Flexibility

The influence of plasticizer on the physical properties of nylon 12 is concentrated on the elastic modulus of resin. Nylon 12 has three basic types of resin, their main difference is due to the plasticizer content of different forms of flexibility. The elastic modulus of resin decreases with the increase of extractable component content of plasticizer.

7) Low wear and low friction performance

Nylon 12 has excellent low abrasion and low friction properties and self lubricating properties, so the friction noise of nylon 12 products is very low.

8) Fuel resistance

In automobiles, the mixture of oxygenated fuel, high aromatic fuel and alcohol currently used can cause the breakdown of many hose materials. After the test, only nylon 11, nylon 12 and fluorocarbon resin elastomers can be used in this environment. Almost other types of nylon melt under the action of automobile fuel, resulting in a change in size.

9) Resistance to zinc chloride solution

Zinc chloride is found under the car. Under certain temperature and humidity, the salt on the road reacts with galvanized steel plate or zinc-containing primer to form the corrosive zinc chloride. In addition, ozone aging, ultraviolet radiation, temperature conditions and so on, will bring different degrees of damage to the parts, reduce the service life.

Nylon 12 is very resistant to zinc chloride solution. Because there is no unsaturated double bond in nylon 12 which is susceptible to ozone attack, ozone aging does not occur. In addition, Nylon 12 UV resistance is also excellent.

10) Excellent electrical performance

The long carbon chain structure of nylon gives it excellent electrical properties. Because of the low water absorption of long carbon chain nylon, it still has excellent dielectric properties in the humid environment, which is not possessed by short carbon chain nylon such as nylon 6 and nylon 66.

PA12 は、最も広く使用されているロング カーボン チェーン ナイロンです。通常のナイロンの一般的な特性のほとんどを備えていることに加えて、吸水性が低く、寸法安定性が高く、耐高温性、耐食性、靭性が高く、加工が容易であるなどの利点があります。PA12の原料であるブタジエンの価格は、同じく炭素鎖長の長いナイロン素材であるPA11に比べて、PA11の原料であるヒマシ油の3分の1程度です。PA11の置き換えが可能で、ほとんどのシーンに適用でき、自動車の燃料パイプ、エアブレーキホース、海底ケーブル、3Dプリンティングなど多くの分野で幅広い用途があります。

1. 自動車

ナイロン 12 は、その安全性と信頼性から、燃料ライン、クラッチ ライン、真空ブレーキ スーパーチャージャー ライン、エア ブレーキ ライン、バッテリー クーラント ライン、および上記のパイプラインの接合部を含む自動車の流体伝送ラインで広く使用できます。軽量素材。

2. パイプケーブル

長年にわたり、PA12 は、フレキシブル ライザー、ガス パイプ、ライニング、および鋼管コーティングで陸上と洋上で使用され、海水浸食と油流体腐食から保護し、フレキシブル ライザーは海底の石油とガス製品および入ってくる流体の配送に使用されてきました。最大 20bar の圧力の天然ガス分配システム。ナイロン 12 は脆化温度が低く、耐候性に優れているため、あらゆる気候 (-50 ~ 70℃) でのフィールド専用通信ケーブルの製造に特に適しています。

3.3D 印刷

他の材料と比較して、PA12 粉末は、高流動性、低静電気、低吸水性、適度な融点、製品の高い寸法精度などの優れた特性を備えています。耐疲労性と靭性は、ワークピースのより高い機械的特性のニーズを満たすこともできるため、ナイロン 12 は徐々に 3D プリント エンジニアリング プラスチックの理想的な材料になります。


4. 医療

PA12は介護用医療材料としても使用されています。カテーテル材料の機械的特性は特に重要です。カテーテルは、簡単に通すことができなければなりませんが、曲がったり壊れたりすることはありません。PA12 は、破裂圧力が高く、柔軟性が高く、耐薬品性があり、体液との適合性があり、毒性がないため、カテーテル製造に最適な材料です。これは、米国食品医薬品局および欧州連合の医療製品に関する要件を満たしています。