Mosquitoes, apart from directly stinging blood and harassing sleep, are more serious in the spread of many diseases. There are four types of mosquito-borne diseases in China: malaria, lymphatic filariasis, epidemic encephalitis B, and dengue fever (or dengue haemorrhagic fever). The most important virus diseases transmitted by mosquitoes are yellow fever and various equine encephalitis.
The reason why humans attract mosquitoes is that female mosquitoes need to use blood to lay eggs and raise eggs. The carbon dioxide and lactic acid produced on the human respiratory system can help mosquitoes find us. The mosquitoes are volatile on the human body. It is so sensitive that it can rush directly to the blood-sucking object from a place 30 meters away. Repellents used for blood-sucking insects such as mosquitoes mainly have two kinds of repellent actions, such as repellent action by stimulating the insect's sense of smell and repellent action by stimulating the touch of insects.
The stimulating olfactory repellent is called evaporative repellent . After treatment with this repellent, mosquitoes are not squeaky or close. This is because when the mosquito senses that the concentration of carbon dioxide in the air rises, it is based on the warm current convection emitted in the human body when it comes into contact with the human body. At this time, the molecules of the repellent component block the moisture sensor of the mosquito and impede the ability to sense the water vapor, so the mosquito cannot approach the human body.
Repellent stimulating touch is called contact repellency . After this repellent treatment, the mosquitoes are still in contact with the human body, but before they suck blood, they escape and fly away. This is because after the contact, the repellent component acts on the peripheral nerves of the mosquito, and the sub-lethal dose before the mosquito falls down or dies causes the mosquito to behave destructively and impaired.
Process ExampleDomestic anti-mosquito agent finishing process
Mosquito-repellent agent JYK PL-100: 3% (weight percentage to pure cotton fabric);
Fastness-enhancing agent Fix-ET: 4% (weight percent to pure cotton fabric);
Rolling ratio: about 80%;
Drying conditions: temperature: 80-100 °C; time: 3-5 min.
Baking conditions: temperature: 130-140 °C; time: 1-2min.
Finishing process is: 1 dipping 1 rolling (rolling rate 80%) → fully dry → baking
Import mosquito repellent finishing process
Aninsen CLC-3600 7%
Ficoat SE 6%
Process: 1 soaking 1 rolling (rolling rate 80%) → fully dried (80 °C) → baking (130 °C × 2min)
Finished fabrics can effectively prevent mosquitoes and other blood-sucking insects from boring insects from reaching the human body. This type of product can be used for outdoor climbing field clothing, tents, clothing worn during fishing, curtains, quilts, pajamas, gardening gloves, agricultural production overalls, military uniforms and other textile finishing, can effectively prevent the West Nile virus, malaria Japanese encephalitis and other diseases caused by the spread of mosquitoes.
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