PP (polypropylene) as a common plastic material, large output, low prices, and has excellent overall performance, good chemical stability, good formability. However, the PP strength is not high, the use of temperature is not high, low hardness, low temperature impact resistance and poor shortcomings, severely limits its application areas. Therefore, engineers add glass fiber, calcium carbonate and other reinforcement materials in PP, and when the glass fiber length exceeds the critical size, the mechanical properties have been dramatically improved!
In this context, LFT-PP (long fiber-reinforced PP) came into being. At present, LFT-PP has been widely used in automobiles, power tools, appliances, water treatment components. However, various fields have different requirements for LFT-PP. Here are a brief introduction to the following eight kinds of LFT-PP:
Such LFT-PP reinforcements are mainly long-glass materials, without other additives. Long glass fiber content is generally 20-60%, heat distortion temperature above 147 ℃ (the longer the glass fiber content, the higher the heat distortion temperature, the higher the low temperature impact strength).
Main features: chemical coupling, high strength, reference chop length 8mm, 11mm, 20mm;
Applications: Automotive Components, Washing Machine Components, Pump Components, Water Treatment Components, Home and More.
二、LFT-PP—Heat resistant grade
Such LFT-PP long glass content is generally 20-50%, thermal deformation temperature above 152 ℃ (the longer the glass content, the higher the heat distortion temperature).
Main features: high strength, long-term heat aging resistance (150 ℃ × 1000h, 140 ℃ × 1000h), reference chop length 8mm, 11mm, 20mm;
Applications: Automotive front and rear modules, battery holders, engine housings, tank frames, sunroof frames and more.
三、LFT-PP—UV resistant grade
UV resistant (UV) LFT-PP long glass content is generally 20-50%, thermal deformation temperature above 152 ℃.
Main features: high strength, UV resistance, long-term heat aging properties, good appearance of the product, reference chop length 8mm, 11mm, 20mm;
Applications: Automotive (truck) door handles, rear-view mirror systems, battery housings, truck (SUV) pedals and more.
四、LFT-PP—Heat-resistant water level
Long-term hot water LFT-PP long glass content is generally 15% and 20%, heat distortion temperature above 146 ℃.
Main features: high strength, good hot water / detergent performance, long-term thermal aging resistance, reference chop length 8mm, 10mm, 12mm;
Applications: Washing machine parts, dryer parts, etc.
五、LFT-PP—Low odor, low TVOC
TVOC stands for Total Volatile Organic Compound (LOT-PP), a low-odor, low-TVOC LFT-PP that offers significant advantages in automotive interiors as the stricter interior air management requirements.
Main features: high strength, low odor, low TVOC, reference chop length 8mm, 10mm, 12mm;
Application: Automotive dashboard (IP) skeleton, inner door, central control panel bracket, glove box cover, airbag bracket, rear panel and so on.
PP is easy to bend after adding glass fiber, injection molding for high-size products, you can consider the use of ultra-low curl LFT-PP.
Main features: ultra-low warpage, high strength, reference chop length 8mm, 10mm, 20mm;
Applications: Automotive interior door, glove box cover, air conditioning fans and other products that require dimensional stability.
七、LFT-PP—Halogen-free flame retardant
Halogen-free flame retardant LFT-PP long glass content is generally 20% and 30%, mainly used in contact with electricity, open flame products.
Key Features: High strength, halogen free flame retardant, high GWIT, high CTI, reference chop length 8mm, 10mm, 12mm;
Application products: wire shell, coil skeleton, building materials, electrical outlets, chairs and other public places.
八、LFT-PP—Super toughen level grade
Super tough grade LFT-PP long glass content is generally 20% and 30%, mainly for vibration larger, vulnerable to stress impact of the product design.
Main features: high impact strength (at room temperature and low humidity), the reference chop length 8mm, 10mm, 12mm;
Applications: Power Tools, Pump Housings, Fittings and more.