Thermally expandable elastomer for sun protection

Abstract

The invention discloses a thermal expandable elastomer for sun protection, and belongs to the technical field of water protection devices. The thermal expandable elastomer comprises a thermal expansion closed elastomer, a cavity is formed in the elastomer, and a substance capable of expanding after being heated is arranged in the cavity; a thermal expansion closed elastic body is adopted as a body, gas which can be expanded by heating is arranged in the elastic body, the gas in the elastic body is expanded by heating, the size is changed along with the change of the external environment temperature, and the sun-shading effect is greatly improved; meanwhile, in cloudy days, rainy days or nights, the temperature is low, the elastomer is hardly influenced by the temperature environment, the volume returns to the normal level, sufficient contact between a water body and air can be ensured, and the oxygen content in water is ensured. The elastic bodies do not need to be densely arranged onthe water surface, the sunshade effect can be achieved, evaporation is reduced, and meanwhile the oxygen content of a water body is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of water body protection devices, and in particular relates to a heat-expandable elastomer used for sun protection applied to water bodies such as reservoirs, lakes, ponds, etc., which can automatically adjust the volume according to the temperature of the external environment, thereby achieving the sun protection effect, and at the same time It can also ensure the normal oxygen content of the water body. Background technique [0002] When the sun shines on the water body, the temperature of the water body will rise, which will cause a large amount of water to evaporate, resulting in a great loss of water resources. According to reports, in order to save water, the city of Los Angeles, California, put 96 million black plastic balls into the Los Angeles Reservoir to shade the sun and prevent water from evaporating, which can save 300 million gallons of water loss every year. Therefore this type of sunshade s...

AI Technical Summary

Problems solved by technology

But although this type of sunshade sphere can guarantee sunshade, there are some problems. Because the volume of this type of sphere is constant, if the sphere on the water surface is not densely placed, it cannot block the sun's exposure, and the sunshade effect cannot be achieved; if the sphere on the water surface is placed too The purpose of preventing sun exposure is achieved, but at night, there is no need for sunshade, but because the dense sphere throughout the day hinders the contact between the water body and the air, it is not conducive to the dissolution of oxygen in the air into the water, and it is easy to cause the water body to be hypoxic. It has adverse effects on aquatic organisms, especially in aquaculture ponds. Aquatic products such as fish, shrimp, and crabs have higher requirements for oxygen. Anoxic water will affect the survival of aquatic products. Therefore, such sunshade spheres currently on the market cannot adapt temporarily. various water bodies

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