Prepn of RE-modified composite glass fiber/polypropylene material
A glass fiber and composite material technology, which is applied in the field of rare earth modified glass fiber/polypropylene composite material preparation, can solve problems such as complex processes, and achieve the effects of simple process method, improved interface bonding force, improved bending strength and impact toughness
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Embodiment 1
[0024] The raw materials used include: homopolypropylene (T30S, MI=3.0g / 10min), produced by the plastic factory of Qilu Petrochemical Company; glass fiber, 9-11 μm in diameter, alkali-free glass fiber produced by Nanjing Glass Fiber Research and Design Institute.
[0025] The weight percentages of each component of the rare earth modifier are as follows:
[0026] Lanthanum chloride: 0.2%, ethanol: 98.62%, ethylenediaminetetraacetic acid (EDTA): 0.05%, ammonium chloride: 0.1%, nitric acid: 0.03%, urea: 1%.
[0027] The glass fiber is pretreated first, and ablated in a muffle furnace at 450°C for 1 hour, so that the residual organic matter on the surface is below 1%. Then treat with the above-mentioned rare earth modifier, immerse the glass fiber in the modifier at room temperature, soak for 2 hours, filter and dry.
[0028] The treated glass fiber is chopped into short fibers of 6 mm, mechanically blended with polypropylene powder, the mass percentage of glass fiber is 15% of ...
Embodiment 2
[0032] The raw materials used are: polypropylene: Q / sh C001-1998, Jinzhou Petrochemical Company; glass fiber: alkali-free glass fiber, diameter 9-11 μm, single strand, Nanjing Glass Fiber Research and Design Institute.
[0033] Rare earth modifier components by weight percentage: cerium chloride 1%; ethanol 97.27%; ethylenediaminetetraacetic acid (EDTA) 0.5%; ammonium chloride 1%; nitric acid 0.2%; urea 0.03%.
[0034] The glass fiber is firstly pretreated, and ablated in a muffle furnace at 550°C for 0.5 hours, so that the residual organic matter on the surface is below 1%. Then use the above-mentioned rare earth modifying agent to treat, and immerse the glass fiber in the modifying agent at room temperature for 3 hours, filter and dry.
[0035] The treated glass fiber is chopped into short fibers of 10mm, mechanically blended with polypropylene powder, the mass percentage of glass fiber is 30% of the mixed powder, and then the mixed powder is put into a stainless steel mold ...
Embodiment 3
[0039]The materials are the same as in Example 1, except that the ratio of the rare earth modifier is changed: lanthanum oxide 2%; ethanol 96.49%; ethylenediaminetetraacetic acid (EDTA) 0.25%; ammonium chloride 0.06%; nitric acid 0.5%; urea 0.7%.
[0040] The glass fibers are pretreated first, and ablated in a muffle furnace at 600°C for 0.5 hours, so that the residual organic matter on the surface is below 1%. Then treat with the above-mentioned rare earth modifier, immerse the glass fiber in the modifier at room temperature, soak for 4 hours, filter and dry.
[0041] The treated glass fiber is chopped into short fibers of 15mm, mechanically blended with polypropylene powder, the mass percentage of glass fiber is 23% of the mixed powder, and then the mixed powder is put into a stainless steel mold for hot pressing , the hot pressing temperature is 180° C., the time is 7 minutes, and the pressure is 5 MPa.
[0042] According to the GB1447-83 standard, the tensile strength of ...
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