How to preserve natural thatch?

Thatched grass is a seasonal natural material, and autumn is the best season to harvest thatched grass every year. After harvesting, you need to bask in the sun for 3-4 times, and the dryness is above 80%. As a sunshade decorative material, it is simple and easy to popularize. Natural aquatic plants are also mainly used in modern antique thatched cottages and thatched pavilions. They are environmentally friendly and cheap, and they are used naturally in nature. They are decorative materials for sunshade and rain protection in landscape architecture industry. The flame retardancy of natural grass, hay, real grass and simulated grass has always been the biggest headache for landscape engineers, designers and even Party A. The risk of fire is too great. So some projects install simulated thatch, but simulation is imitation after all. Many designers who pursue ecology and retro are still covered with natural thatch. In fact, natural thatch, dry thatch and true thatch can all be used as flame retardants: first, return to the theory of natural physics, in which the combustion mentioned is like this. The three major factors of combustion are: combustible, medium and air; Now that we know these three factors of combustion, we have countermeasures. Reduce the possibility of combustible burning: we can use flame retardant, spray flame retardant on the thatched roof when it is installed, and reduce the flammability of thatched grass after it is absorbed by thatched grass in the sun; But after all, flame retardant is just a statement, a psychological comfort. In fact, the experiments we have done show that the thatch gradually becomes black and white when oil is poured on the fire-retardant roof and the fire is lit. Therefore, it is very difficult to change the performance of thatch. Precautions: Fire prevention system, namely water mist spraying system, is installed on the roof, which can prevent fire and cool down in summer, killing two birds with one stone. In the design, we can refer to the design of building fire protection layer, which can prevent thatch from burning at any time; According to local conditions, true thatch can be used in outdoor pavilions with low safety requirements and places where no one lives. Just like electricity, electric shock is terrible, but it is the same that people can still use electricity safely. Only natural thatch can be more natural. Returning to the original is beyond the reach of any simulation material. Therefore, natural thatch is the best outdoor shading material.