CN105017840A

CN105017840A - Oil paint additive for removing formaldehyde and production method of additive

Info

Publication number: CN105017840A
Application number: CN201410167066.XA
Authority: CN
Inventors: 王志龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-24
Filing date: 2014-04-24
Publication date: 2015-11-04

Abstract

The invention discloses an oil paint additive for removing formaldehyde and a production method of the additive. According to the invention, components which can react with formaldehyde are added into a required solvent at room temperature for grinding to form paste, or for dissolving to be in a uniform state; in the grinding or dissolving process, heating can be carried out properly, and the temperature is controlled to 20-100 DEG C, preferably 45-65 DEG C.

Description

A kind of paint is except formaldehyde additive and production method thereof

Technical field

The invention discloses a kind of paint except formaldehyde additive and production method thereof.

Background technology

Along with the increase of wood-based plate volume of production and marketing, incident formaldehyde pollution is one of problem that could not solve during finishing uses always.Owing to employing a large amount of artificial boards and various art material tackiness agent in fitment process, therefore in newly-decorated room, various harmful irritating smell is can hardly be avoided.Along with the raising of people's environmental consciousness, the reinforcement of health perception, also more and more higher to the requirement of indoor environment after finishing.New research shows that the harm of formaldehyde does not far just stimulate nose and eyes, and its long-time low dosage contact harm is larger, is still serious to the harm of old man and children and pregnant woman.And a large amount of uses of wood-based plate, although saved the forest reserves, improve the utilization ratio of timber, the processing characteristics of product is good again, but the negative impact brought is exactly the problem of Form aldehyde release, even if present environment-friendly and green wood-based plate also still exists the problem of Form aldehyde release, just burst size is slightly low.

Summary of the invention

The invention discloses a kind of paint except formaldehyde additive, it fundamentally can solve the formaldehyde pollution problem of artificial board in furniture makes.The present invention achieves the goal in the following manner.

Paint be all fit up the last of especially art material sheet material finishing together must through operation.Therefore the removing carrying out the pollution of the formaldehyde in wood furniture in this step is selected to play a multiplier effect.When the free formaldehyde in sheet material discharges outward, run in paint film except formaldehyde additive, formaldehyde will be caught completely absorbs removing, and can not be discharged in the indoor environment that people lives.Simultaneously, paint originally forms the hydrophobic macromolecule membrane of one deck in the surface of sheet material, moisture is stoped to permeate in sheet material further, delayed again from another point of view sheet material storage use procedure in aging, the aging of wood-based plate is exactly the aging of the urea-formaldehyde glue that uses or phenolic glue etc. when producing wood-based plate after all, and established polymer chain break constantly occurs in the aging meeting of glue, discharge formaldehyde.Therefore paint except formaldehyde additive join oil add middle use time, neither affect the physicochemical property of paint, can act synergistically with having painted again, remove the free formaldehyde in various furniture.

Below in conjunction with embodiments of the invention, the present invention is described further.

Embodiment one;

Get 25 parts, urea, thiocarbamide 25 parts, add ethanol 25 parts, ethyl acetate 25 parts, fully grinding makes it become paste shape, and namely cost paint is except formaldehyde additive.

Embodiment two:

Get 10 parts, urea, melamine 90 parts, 85% ethanol 20 parts, add 90% propanedioic acid glycol ether ester 100 parts, grinding is heated to 50 DEG C, and after 4 hours, it is all dissolved into uniform solution and is paint except formaldehyde additive.

Embodiment three;

Get paint described in the present embodiment one except formaldehyde additive 50 parts, directly add in 250 parts of deployed on request alkyd paints, mix well and be directly brushed to the surface and end face that 15 piece sizes are the common commercially available glued board of 15cm × 5cm × 0.7cm afterwards, this is test group.Blank group (not carrying out painting the normal plywood of process) is set simultaneously and does not add the control group painted except formaldehyde additive and (carry out japanning process with same paint, but do not add paint except formaldehyde additive), three groups of samples are the onesize commercially available glued board of same quantity.Test group and control group all paint one coat, and after paint is dry, carry out the mensuration of free formaldehyde content together with blank group, the measuring method of free formaldehyde is undertaken by the 24h condensed steam water specified in GB GB/T 17657-1999.Result blank group burst size of methanal is 12.3mg/L (burst size of methanal of national regulations E2 level offset plate is≤5mg/L), and test control group is 5.8mg/L, test group is only 0.3mg/L (the E1 step burst size of methanal that China specifies is≤1.5mg/L, and the F1 step burst size of methanal of Japan is≤0.5mg/L).

Embodiment four: the paint got described in the present embodiment two removes formaldehyde additive 1000 parts, join 7500 parts by the deployed Polyester Paint of paint deployment requirement, mix well the rear chifforobe directly carrying out paint core-board and glued board etc. and make, wardrobe size is 2.5m × 4m × 0.8m, totally three, three sizes that are placed in are the room of 12 square metres.By the method for embodiment three, test group, test control group and control group are processed, by three rooms after airtight two hours after paint is dry, the mensuration of the concentration of formaldehyde in room air is directly carried out with direct-reading type air formaldehyde determinator, result blank group concentration of formaldehyde is 0.67ppm, control group is 0.39ppm, and test group is only 0.03ppm (is significantly less than the Environmental Protection Level 0.08mg/m of the formaldehyde in indoor air of national regulations ³).Paint to test control group again and paint for one time, still carry out the mensuration of air Free-formaldehyde by upper method, result is 0.21ppm.

Claims

1. paint is except a formaldehyde additive, it is characterized in that directly adding in paint using.

2. paint as claimed in claim 1 is except formaldehyde additive, be further characterized in that this additive by room temperature can with the composition of formaldehyde reaction and solvent composition.

3. the paint as described in claim 1 and 2 is except formaldehyde additive, be further characterized in that paint except comprising urea, ammonium salt class, thiocarbamide, melamine, ethylene urea, dicyandiamide, biuret with the composition of formaldehyde reaction in formaldehyde additive, they can be used alone or several with the use of.

4. the paint as described in claim 1 and 2 except formaldehyde additive, be further characterized in that paint except the solvent in formaldehyde additive can be alcohols, ester class and organic acid, they can be used alone or several with the use of.

5. paint as claimed in claim 1 is except formaldehyde additive, be further characterized in that this additive at room temperature can with the composition of formaldehyde reaction, its be used alone or with the use of time total amount be 8%-90%, preferably between 20%-60%, solvent be used alone or several with the use of amount be 92%-10%, be preferably between 80%-40%.

6. the paint as described in claim 1 and 5 is except formaldehyde additive, be further characterized in that and fully grind to form paste by adding in the solvent of aequum with the component of formaldehyde reaction at normal temperatures or make it be dissolved into uniform state, can suitably heat in the process of grinding or dissolve, temperature controls at 20 DEG C-100 DEG C, preferably at 45 DEG C-65 DEG C.