1, formaldehyde is what?

Baidu encyclopaedia says: formaldehyde is a colourless gas with a strong irritating odour. It is soluble in water, alcohol and ether. Formaldehyde is gaseous at room temperature, usually in the form of an aqueous solution. 35 to 40% of the aqueous solution of formaldehyde is called formalin.

Yo yo yo, feel forced to look so high, a sentence of things: can be used to soak the corpse specimens! Everyone has heard of it, right? Hahaha 。。。。。

2, formaldehyde main source?

Formaldehyde is mainly from adhesives, panel furniture or customised furniture using panels mainly including particle board, density board, plywood and other man-made panels. The process of manufacturing such panels is simply to treat the wood into wood chips, and then add adhesives, through high temperature extrusion, etc., the wood chips processed into panels. And formaldehyde is present in the adhesive.

Because formaldehyde has strong adhesive properties, can strengthen the hardness of the board, anti-insect, anti-corrosion, and cheap, so it as the main component of the urea-formaldehyde resin is a variety of raw materials for man-made panels.

Measurement shows that about 60% of the home formaldehyde exceeds the standard, decoration use although qualified building materials, analysis found that excessive decoration, trace emanation accumulation to exceed the standard is the main reason, such as indoor curtains, fabrics, tablecloths, clothing and other household items.

3, formaldehyde harm to people?

First: irritation

Formaldehyde's main hazard manifested in the skin and mucous membrane irritation, formaldehyde is the original plasma poisonous substances, can be combined with proteins, high concentrations of inhalation of respiratory tract severe irritation and oedema, eye irritation, headache.

Second: sensitisation

Direct skin contact with formaldehyde can cause allergic dermatitis, discolouration, necrosis, inhalation of high concentrations of formaldehyde can induce bronchial asthma.

Third: mutagenic effect

High concentration of formaldehyde is also a genotoxic substance. Experimental animals can cause nasopharyngeal tumours when inhaled at high concentrations in the laboratory.

Long-term exposure to low-dose formaldehyde hazards are caused by chronic respiratory diseases, causing nasopharyngeal cancer, colon cancer, brain tumours, menstrual disorders, gene mutations in the nucleus of the cell, DNA single-stranded internal cross-linking and DNA and protein.

Formaldehyde is so harmful, then the question comes, how to reduce the release of formaldehyde furniture? Here Ruizhize sealing strip has some methods, I'm here to tell you quietly, you can not say with others!

Regulate the use of the environment: the use of the environment on the furniture formaldehyde emission has a great impact. Temperature, humidity and ventilation will affect the formaldehyde emission. In the usual climatic conditions, the temperature increased by 8 ℃, the formaldehyde concentration in the air will be doubled; humidity increased by 12%, formaldehyde release will increase by about 15%. Therefore, under the premise of conditions, you can use air conditioning and fresh air system devices to adjust the indoor temperature and humidity and fresh air, so that formaldehyde emanation is moderately controlled.

2, ventilation to remove the law: can reduce the content of indoor furniture odour to a certain extent, but can not fundamentally reduce the presence of harmful gases, can not cut off the source of pollution, treating the symptoms rather than the root cause.

3, plant method: placed in the room 1.5 metres high plants 2-3 pots is more appropriate, the use of plants own characteristics of natural adsorption.

4, activated carbon adsorption method: in all corners of the house to put three to five discs of activated carbon enough measurements can be. It is not easy to cause secondary pollution and has no effect on people.

5, control the carrying rate: in the case of basic functional satisfaction, should try to reduce the number of pieces of furniture in the indoor space.

6, inhibit the diffusion pathway: it is worth emphasising the importance of plate furniture edging. Design furniture, in order to meet the strength and structure of the premise, you can try to use thin plate.

7, simplify the decoration: selection of low formaldehyde release of adhesives, a variety of decorative materials and coatings, as well as a reasonable process to ensure that the decoration does not trigger the release of new formaldehyde.

8, ageing time and conditions: furniture should be aged for a period of time before use, and placed in a high temperature and high humidity environment to accelerate the formaldehyde emission, in order to reduce the pollution in the future use.