LFT-G ブランド PP フィリング ガラス長繊維 20%-60% 高性能、低コスト、白色

PP樹脂とは？

ポリプロピレン、略してPPは、付加重合によるプロピレンのポリマーです。白いワックス状の素材で、透明で軽い外観です。化学式は (C3H6)n、密度は 0.89 ～ 0.91g/cm3、可燃性、融点は 189℃、軟化温度は 155℃、使用温度範囲は -30 ～ 140℃です。

80℃以下では、酸、アルカリ、塩溶液、およびさまざまな有機溶剤の腐食に耐えることができ、高温および酸化作用で分解する可能性があります。

ポリプロピレンは優れた性能を持つ熱可塑性合成樹脂です。無色半透明の軽量熱可塑性汎用プラスチックで、耐薬品性、耐熱性、電気絶縁性、高強度の機械的特性、優れた耐摩耗加工特性を備えています。衣類、毛布、その他の繊維製品、医療機器、自動車、自転車、スペアパーツ、輸送用パイプ、化学容器などの製造に広く使用されています。食品、医薬品の包装にも使用されます。

ガラス長繊維(LGF)とは？

Glass fiber is a kind of inorganic nonmetallic material with excellent performance. The advantages are good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, but the disadvantages are brittle and poor wear resistance. One of the main uses of glass fiber is to reinforce composite materials. Long glass fiber generally refers to the length of more than 10mm glass fiber.

Why filling Long Glass Fiber(LGF)?

PP(polypropylene) as one of the general plastic materials, large output, low price, at the same time has excellent comprehensive performance, good chemical stability, better processing performance.

However, PP strength is not high, use temperature is not high, low hardness, low temperature impact resistance and other shortcomings, seriously limited its application field.

Therefore, engineers add reinforcing materials such as glass fiber and calcium carbonate into PP, and when the length of glass fiber exceeds the critical size, the mechanical properties can be dramatically improved.

Under this background, LFT-PP(long fiber reinforced PP) came into being.

At present, LDT-PP has been widely used in automobiles, power tools, home appliances, water treatment components.

Particle morphology of PP reinforced by long glass fiber

Generally 12 mm or 25 mm in length, diameter of about 3 mm columnar particles. The 12mm or so length of the grain is mainly used for injection molding, and the 25mm or so length of the grain is mainly used for pressure molding. In this particle, the glass fiber has the same length as the particle, the glass fiber content can vary from 20 to 60 percent, and the color of the particle can be matched according to the customer's requirements.

Why do some areas use long glass fiber reinforced PP instead of short glass fiber reinforced PP?

Compared with short fiber reinforced thermoplastic composites, LFT has the following advantages:

• Long fiber length, significantly improve the mechanical properties of products.
• High specific stiffness and strength, good impact resistance, especially suitable for automotive applications.
• Improved creep resistance, good dimensional stability, high parts forming accuracy.
• Excellent fatigue resistance.
• Better stability in hot and humid environments.
• The fiber can move relatively in the molding mold during the molding process, and the fiber damage is small.

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