A kind of surface covering and preparation method thereof

Abstract

The application provides a ground covering and a preparation method thereof. The surface covering provided by the present invention comprises 58%-90% straw fiber, 8%-40% polymer matrix, 1%-3% lubricant and 1%-10% lubricant, and the polymer matrix One or more selected from polypropylene carbonate, carbon dioxide copolymer-based thermoplastic polyurethane, waste polylactic acid film material, terephthalic acid-adipic acid-butylene glycol copolyester and starch. The surface covering provided by the invention has excellent mechanical properties and water absorption properties, can play a better protective role, and can conserve soil and water, and suppress dust; moreover, it also has excellent water immersion resistance, and can resist long-term immersion In addition, the present invention uses agricultural wastes as raw materials, which has low cost, makes rational use of waste materials, and avoids serious pollution caused by wanton burning of agricultural wastes.

Description

technical field [0001] The invention relates to the technical field of urban greening materials, in particular to a ground covering and a preparation method thereof. Background technique [0002] With the improvement of the economic level and the acceleration of the urbanization process, people have higher and higher requirements for the environment, and the demand for improving and beautifying the environment is becoming more and more urgent. In recent years, the intensity of urban construction has been continuously increased, and the coverage rate of urban greening has gradually increased, but there are still many green bare surfaces in cities (such as the bare surfaces around green plants in residential areas, urban roads, gardens, etc.) Problems, such as a large amount of water but poor water retention, easy to grow weeds, need to fertilize and cause damage to the soil ecology, and heavy dust, etc., seriously affect the sustainable development of the urban ecological env...

AI Technical Summary

Problems solved by technology

[0004] At present, ground covers are generally divided into three categories: inorganic covers, plant covers and organic covers; inorganic covers include pebbles, crushed stones or ceramsite, etc., although they have the function of keeping the soil moist, they may cause damage to the soil. New harmful factors such as poor soil ventilation affect tree growth; vegetative mulch refers to the planting of turf and other plants around the roots of trees to cover bare soil, but it is easy to compete with trees for water and nutrients, affecting the growth of tree species; organic mulch The materials mainly include bark pieces or wood chips, which can avoid the defects of the above two kinds of coverings, and are rich in sources and more widely used

If someone proposes to use wood-plastic organic composite materials used in packaging, electronic appliances, home improvement and other fields for surface coverings, but its strength is low and brittle, which is not conducive to resisting the impact of special weather such as strong winds and heavy rains. At the same time, it absorbs water Poor performance, which is not conducive to timely and fully absorbing water supply to the covered soil and plants, so that a large amount of water is wasted. In addition, the plant fibers used in the materials usually need to be treated with alkali before they can be used, which will cause secondary pollution to the environment; its cost High, and not easy to degrade, damage the environment, so it can not be used as a good surface cover

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