Nylon 6 or polycaprolactam is a polymer, in particular semicrystalline polyamide. Unlike most other nylons, Nylon 6 Granules is not a condensation polymer, but instead is formed by ring-opening polymerization; this makes it a special case in the comparison between condensation and addition polymers. Synthesis: Reinforced Pa6 Pellets can be modified using comonomers or stabilizers during polymerization to introduce new chain end or functional groups, which changes the reactivity and chemical properties. It is often done to change its dyeability or flame retardance. Nylon 6 is synthesized by ring-opening polymerization of caprolactam. Caprolactam has 6 carbons, hence Nylon 6. When caprolactam is heated at about 533 K in an inert atmosphere of nitrogen for about 4–5 hours, the ring breaks and undergoes polymerization. Then the molten mass is passed through spinnerets to form fibres of Nylon 6 Natural Granules. As a synthetic fibre, PA6 Plastic Pellet is generally white but can be dyed in a solution bath prior to production for different color results. Its tenacity is 6–8.5 gf/D with a density of 1.14 g/cm3. Its melting point is at 215°C and can protect heat up to 150°C on average. Production in Europe: At present, polyamide 6 is a significant construction material used in many industries, for instance in the automotive industry, aircraft industry, electronic and electrotechnical industry, clothing industry and medicine. Annual demand for polyamides in Europe amounts to a million tonnes.  

Glass fiber reinforced plastic is based on the original pure plastic, adding glass fiber and other additives to improve the use of the material. In general, most of the glass fiber reinforced materials are used in the structural parts of the product and are a kind of structural engineering materials; for example: PP ABS PA66 PA6 PC POM PET PBT. Advantages: 1. After the glass fiber is reinforced, the glass fiber is a high-temperature resistant material. Therefore, the heat-resisting temperature of the reinforced plastic is much higher than before without glass fiber, especially the nylon plastic,for example: Pa6 granules, Nylon6 Plastic Granules,Nylon 6 Pellets; 2. After the glass fiber is reinforced, due to the addition of glass fiber, the mutual movement between the polymer chains of the plastic is limited. Therefore, the shrinkage rate of the reinforced plastic is greatly reduced, and the rigidity is also greatly improved; 3. After the glass fiber is reinforced, the reinforced plastic does not stress crack, and at the same time, the impact resistance of the plastic is greatly improved; 4. After the glass fiber is reinforced, the glass fiber is a high-strength material, which also greatly increases the strength of the plastic, such as: tensile strength, compressive strength, bending strength, improve a lot; Disadvantages: 1. After the glass fiber is reinforced, since the glass fiber is added, the glass fiber is transparent before it becomes opaque; 2. After the glass fiber is reinforced, the toughness of all plastics decreases, and the brittleness increases; 3. After the glass fiber is reinforced, due to the addition of glass fiber, the melt viscosity of all materials increases, the flowability deteriorates, and the injection pressure increases much more than that without glass fiber; 4. After the glass fiber is reinforced, due to the addition of glass fiber, the flowability is poor. In order to normal injection molding, the injection temperature of all reinforced plastics is 10°C-30°C higher than before without glass fiber;