Special wood and plastic material for railway sleeper

Abstract

The invention discloses a special wood and plastic material for a railway sleeper, which comprises the following components by weight ratio: 5-30% of polypropylene recycled material, 5-30% of polyethylene recycled material, 51-70% of wood flour, 0.2-2.0% of lubricant, 3-15% of coating agent, 1.0-8.0% of coupling agent, 1.0-5.0% of moisture absorbing agent, 0.5-2.0% of anti-aging agent and 0.1-5.5% of other additives. The special wood and plastic material for the railway sleeper can lead the proportion of crop straw powder to be far higher than 50% on the basis of having excellent comprehensive mechanical properties and good processability, and the use of the material can rapidly produce the railway sleeper by extrusion; furthermore, the product has high strength and can keep all the advantages of the wood sleeper, avoid the decay phenomenon, relatively greatly prolong the service life, simultaneously avoid consuming wood, realizing low cost and simple processing and being in line with environmental protection.

Description

technical field [0001] The invention relates to a composite material, and more specifically relates to a special wood-plastic material for railway sleepers. The invention also relates to a method for making the special wood-plastic material for railway sleepers. Background technique [0002] Railway sleepers are classified according to material properties: wooden sleepers; reinforced concrete sleepers; steel sleepers; composite material sleepers. Among them, the characteristics of wooden sleepers: good elasticity, light weight, simple production, good insulation performance. Fasteners and sleepers are simply connected, laying, maintenance, and transportation are convenient, and there is a large coefficient of friction between the sleepers and gravel ballast. The wooden sleeper is rich in ductile corrosion, which can absorb the weight generated by the running of the train better than other sleepers and is not easy to break. But its disadvantage is that it has a short servi...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the wood-plastic materials on the market are made of log wood powder or wood fiber and plastic, which has a certain role in promoting logging and deforestation. Moreover, due to the poor strength and processability of the material, it is limited to extruding some relatively simple, Products with low strength and high processing costs due to poor processability have to try their best to reduce material costs, and embarked on the route of low-quality and low-price vicious circle competition, which will cause huge damage to this industry.