Common saying says 30 and stand, not be days is threatening, however a paragraph of chapter of life section, from the breakthrough in hesitation, come out a few minutes of blueness are acerbity. A person is in more than 30 years old when, it is to be worth career summit summit undoubtedly period. However, to Mr Wang of 37 years old, it is the terminus of life however.
On August 31, " employee of the P7 in A got leukaemia die to rent freely formaldehyde house before one's death " the article brushs screen in friend circle, say gentleman of king of the employee in A dies due to illness, the family member detects the freely room formaldehyde that its hire before one's death exceeds bid badly.
This year January, mr Wang of 37 years old received Alibaba " alternant design expert " Offer, via entering duty check-up hind, mr Wang leaves the Beijing with old life, come to headquarters of Hangzhou of the Baba in A alone. Result of the check-up that enter office shows, its each index is normal, the body does not have any problems.
Mr Wang leased the building of a double entry of freely in Hangzhou, this year July, its feel the body is uncomfortable, after 301 examinations, the doctor informs its plaque to decrease, subsequently, in capital medical university diagnose of hospital of accessary Beijing rising sun fastens leukaemia for acute marrow; On July 13, illness aggravation dies.
Mr Wang wife says, the husband is in Hangzhou when, most time is summer, heating up, opening air conditioning, it is very difficult also to be afraid accomplish open to open wind. And enter freely apartment to arrive from Mr Wang die, also just the time of two months.
Subsequently, the wife of Mr Wang refers an indictment to the court, received freely to want to remove with its however the information that hires a contract. But introduce according to Mr Wang wife, chummage has not expire.
Before undertaking decorating removing formaldehyde, we besides the origin that should understand formaldehyde, the method that knows resolution removes formaldehyde even is effective, here, small make up everybody's detailed summary.
One, what is formaldehyde?
Formaldehyde, weigh formaldehyde again. Colorless gas, have special exciting taste, wait to person eye, bazoo have stimulative effect. The chroma of aqueous solution is highest can amount to 55% , it is normally 40% , say to do formaldehyde water, common weighs formalin (Formalin) , it is the colorless liquid that has exciting taste. Release cycle to be as high as 3-15 year. And 2-3 exceeding bid times it is to hear those who be less than odour normally! If hear,get taste, that exceeds bid badly namely! Exceed 6, bring about lobar oedema possibly, if be to achieve 30, can cause person death instantly!
2, the source with the mainest formaldehyde
Generally speaking, all sorts of man-made plank, for instance plywood, joinery board, particieboard, medium density beaverboard, and the main source that the adhesive that in decorating a process, uses is formaldehyde. These are mirrorred in home outfit, basically be expression is above furniture. Actually major man-made plank furniture contains formaldehyde, see next pictures, the composition of plank:
Of formaldehyde of man-made plank furniture basically originate, the paint layer of plank and man-made plank make the place in furniture process add bind agent. The formaldehyde naturally of paint layer need not I said more, basically will carry bind agent. In current man-made plank technology, the adhesive that basically uses has 3 kinds: Niao aldehyde colophony, phenolic aldehyde colophony, 3 get together colophony of cyanogen amine formaldehyde. Saw a name matter with formaldehyde, these glue are released ceaselessly in the process that can use furniture in us.
For the angle from major, board structure is different, the amount that uses agglutinant also is different. Actually, the dosage of agglutinant density board > particieboard > joinery board > plywood > multilayer real wood is received board > stick face plate > solid board.
Here, small write true proposal everybody, brief decorate! Much more ventilated! The much thought that expend a dot chooses the home to install building materials, as far as possible say to formaldehyde from fountainhead not!
Divide the methodological evaluation of formaldehyde
If the origin of formaldehyde cannot be put an end to on fountainhead, can is wanton absurd formaldehyde of at one's convenience? Not be of course! Domestic outfit removes formaldehyde is long-term exercise, one dragnet jacket repairs the means that removes formaldehyde, can jump out all sorts of skill recipe, but useful really? We will be evaluated one by one.
1, formaldehyde of adsorption of mud of bamboo charcoal, activated carbon, diatom
Practical: ★ ? ? ? ?
Can adsorptive? Can, but have 2 requirements, flow of air of a need makes formaldehyde and these adsorptive carrier contacts; the 2nd it is a contact the area wants big. But the problem of adsorptive existence is met again after saturation namely release, pledge when these material that is to say adsorptive enough formaldehyde, if temperature is elevatory,can release the formaldehyde that absorbs originally, cause pollution 2 times.
2, green plant absorbs formaldehyde
Practical: ★ ? ? ? ?
Having a few green plant is to have to formaldehyde absorb a function, for instance bracketplant, if,research makes clear 100 smooth rice, the layer is tall inside the 3 bedrooms of rice, formaldehyde chroma is 0.5 milligram / of stere, a bracketplant needs the job 1 year to just can absorb the formaldehyde of free, this is the amount that does not consider plank in a steady stream ceaseless to release. Raise in your home that is to say about a hundred a few bracketplant is theoretic can use a bit a little probably.
3, smooth accelerant decomposes formaldehyde
Practical: ★ ? ? ? ?
If adsorption is no good, does that decompose formaldehyde always can? Smooth accelerant can decompose formaldehyde into water and carbon dioxide. And do not say this thing may have pollution 2 times, also can not buy true goods certainly, additionally smooth accelerant needs to have a necessary ambient conditions except formaldehyde: Ultraviolet ray.
However. . . . . .
Also the ultraviolet ray in sunshine can not satisfy the ultraviolet number that ① smooth accelerant needs, the need inside house bestrews ability of ultraviolet array lamp to satisfy.
The formaldehyde that ② smooth accelerant can handle is merely in the formaldehyde all round its, to a few centimeters beyond do not handle.
Grain of ③ smooth accelerant is PM2.5 - 10 square, to ranking an environment character, it is a kind of new air contaminant
④ is current, smooth accelerant product of home cannot grow effect to remove formaldehyde for the most part, can hold 9 months only. Japanese smooth catalyst is main utility is the wall outside utility structure, did not use at occupying the home indoor except formaldehyde.
4, the product that removes formaldehyde
Practical: ★ ★ ? ? ?
Also have in the market now remove formaldehyde product technically, formaldehyde is for instance cleared the agent is the method that relies on chemical reaction " get rid of " of formaldehyde, the essence of this kind of method is oxidize formaldehyde into formic acid, but itself is decomposed easily, gush can damage lumber not to say on board, and efficiency is lost in number hour, come true impossibly " one gush Yong Yi " . The in season of hydrogen peroxide solution that besides Gao Nong spends is in air, can new to person generation pollution is endangered. Other oxidant, reducer all also cannot keep clear of effectively formaldehyde, and can introduce similar new pollution.
5, open a window ventilated
Practical: ★ of ★ of ★ ★ ★
Actually most the most useful method, attenuant still. Formaldehyde density became low safe, the method with the most commonly used dilute, it is ventilated.
Formaldehyde has two big character, it is speed is released to accelerate below high temperature, 2 it is Yi Rong at water. In meet high temperature, high below condition of wet, negative pressure aggravate formaldehyde discloses the rate that send out. High temperature, summer is for instance indoor perhaps open air conditioning to open central heating; tall wet, open humidifier; negative pressure, besides open a window ventilated besides, you can spend 300 or so to buy a platoon fan to go to the convulsions outdoor.
Somebody in oneself new home has done a test, air conditioning opening heat, open the humidifier, platoon fan convulsions that uses wind force 520m3/h, 24 hours keep, chroma of the formaldehyde after 10 days reduces an in part, and do not rebound. Actually summer is the season of formaldehyde of a very good purify.
5, new wind system
Practical: ★ of ★ ★ ★ ?
The way that local tyrant loves most. Open a window ventilated summer is very appropriate, but arrived in the winter, appear a bit unwell used. If decorate a budget not nervous, be inferior to spending two 30 thousand outfit system of a new wind, can keep outdoors fresh air be being taken not only indoor, and filter through Pm2.5 and hot exchange, assure the temperature inside house not loss.
6, air purifier (contain activated carbon mesh)
Practical: ★ of ★ ★ ★ ?
Air purifier is not aimed at formaldehyde originally, it is a few this years formaldehyde pollution was fried to come up only. The activated carbon mesh in air purifier, can be opposite a physisorption action of formaldehyde, although adsorption is less, but still have bit of effect. What want an attention nevertheless is, to prevent 2 times to pollute, should change regularly activated carbon mesh, general with 7-8 it is advisable that the month replacings.
So much method said above, small make up think the most effective decorating the means that removes formaldehyde still is ventilated the most effective, if do not have a condition to install new wind system, can try probably indoor impose the lukewarm, measure that imposes wind of wet, platoon, the budget is little and effective.
