CN106349840A - High-hardness-flame-retardant-composite-cellulose-acetate-nano-fiber-containing water-based paint for wooden crafts and preparation method thereof - Google Patents

Abstract

The invention discloses a high-hardness-flame-retardant-composite-cellulose-acetate-nano-fiber-containing water-based paint for wooden crafts. On the basis of the water-based acrylic emulsion, composite cellulose acetate nano fibers prepared by an electrostatic spinning technique are added; the composite fibers contain nano ceramic powder and polysilicone boroxane, and can effectively enhance the hardness and flame retardancy of the nano fibers; the composite fibers combines the advantages of all the raw materials, and can endow the hand feeling and air permeability of the coated fabric; and thus, the water-based paint has the advantages of excellent hardness, excellent toughness, impact resistance, scrub resistance, high safety and environment friendliness.

Description

A kind of wood artwork is with containing high rigidity fire-retardant multiple cellulose acetate nanofiber Water paint and preparation method thereof

Technical field

The present invention relates to water paint technical field, more particularly, to a kind of wood artwork is with containing the fire-retardant compound acetic acid of high rigidity Cellulose nano-fibrous water paint and preparation method thereof.

Background technology

Wood artwork is with all kinds of timber as raw material, through machine or the unique style of home built one class with view and admire The artware being worth, all very popular on market at home and abroad, due to wood artwork than conventional wooden utensil in moulding On more fine, use time is also more permanent, therefore to its surfacecti proteon work have different requirements, in woodenware surface spraying Paint is relatively conventional preventive means, the paint performance that its surface is used by be directly connected to artware ornamental value and Service life, due to the particularity of artware, the paint that it is used is not only environment friendly and pollution-free, and certain moisture-inhibiting also will be had saturating Gas performance, excessively not dry to ensure timber, prevent from deforming.Although the aqueous paint emerging in large numbers in the market energy in the feature of environmental protection Meet demand, but its application on wood substrate and protection effect still have much room for improvement.

Nanofiber is because of properties such as its unique skin effect, small-size effect, quantum size effect, optical effects It is well worth doing in modified paint field, be seen in report at present is concentrated mainly on the modification to coating for the inorganic nano-fiber, and fine The report of the plain nanofiber modified coating of dimension is relatively fewer, and cellulose material has cheap and easy to get, ring than mineral-type materials The advantages of protect nontoxic, more for practical value." feasibility of natural fiber micro-/ nano fibril modification coatings for furniture " literary composition research Show that native cellulose nanofibrils have greatly improved to key propertys such as the wearability of coating, scratch resistance, pliabilities, so And native cellulose itself easily occurs degradation with aging, reduction of service life under the influence of environmental factorss, and then affect coating Protection effect.

Cellulose acetate is the important staple fibre of a class, is obtaining after hydroxyl acetic acid esterified in cellulosic molecule Plant the natural high polymer of chemical modification, it is cheap and easy to get, and feel is smooth flexible, has hydrophilic, is suitable as water paint Modifying agent, its unique loose structure can effectively improve the breathability of coating, but single cellulose acetate nanometer Fibrous mechanical property is poor, in order to improve the serviceability of coating, needs to do further technological improvement.

Content of the invention

The object of the invention is exactly the defect in order to make up prior art, provides a kind of wood artwork with fire-retardant containing high rigidity Water paint of multiple cellulose acetate nanofiber and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of water paint containing high rigidity fire-retardant multiple cellulose acetate nanofiber for wood artwork, this water paint is by following The raw material of weight portion prepares: solid content is water-borne acrylic resin emulsion 30-40 of 40-50%, Polyborosiloxane 1-1.5, Cellulose acetate 4-5, nano-ceramic powder 0.5-1, appropriate deionized water, polyoxyethylene alkyl ether 0.1-0.2, organic silicon defoamer 0.1-0.2, n, n- dimethylformamide 15-25, acetone 30-40.

A kind of described wood artwork system of the water paint containing high rigidity fire-retardant multiple cellulose acetate nanofiber Preparation Method, described preparation method is:

(1) first cellulose acetate, Polyborosiloxane are put into n, in n- dimethylformamide, acetone composite solution, stir to it Nano-ceramic powder, sonic oscillation 6-8h under airtight condition is added, the solution made carries out electrostatic spinning, spinning bar after being completely dissolved Part is: voltage 15-20kv, and receiving range is 25-30cm, and injection speed is 1-1.5ml/h, and reception medium is deionized water, connects Receive medium turned with 400-500/speed of min do not stop to stir, injection finish rear product through washing centrifugation, be dried after Composite vinegar is obtained Acid cellulose nanofiber；

(2) material prepared by step (1) is mixed together and uniformly adjusts afterwards with aqueous acrylic emulsion and other leftover materials Viscosity, through deaeration, sieve after obtain final product.

Water paint of the present invention, based on aqueous acrylic emulsion, with the addition of one kind wherein and is obtained by electrostatic spinning process Multiple cellulose acetate nanofiber, in this composite fibre contain nano-ceramic powder, Polyborosiloxane, can effectively improve The hardness of nanofiber and fire resistance, the advantage of each raw material is be combined with each other by this composite fibre, can give as coated fabric Feel and breathability, have excellent hardness and toughness, shock resistance scrubbing resistance, safety and environmental protection concurrently simultaneously.

Specific embodiment

A kind of water paint containing high rigidity fire-retardant multiple cellulose acetate nanofiber for wood artwork, this water paint by The raw material of following weight portion prepares: solid content be 45% water-borne acrylic resin emulsion 30, Polyborosiloxane 1, acetic acid fine Dimension element 4, nano-ceramic powder 0.5, appropriate deionized water, polyoxyethylene alkyl ether 0.1, organic silicon defoamer 0.1, n, n- dimethyl Methanamide 15, acetone 30.

The preparation method of this embodiment water paint is:

(1) first cellulose acetate, Polyborosiloxane are put into n, in n- dimethylformamide, acetone composite solution, stir to it Nano-ceramic powder, sonic oscillation 6h under airtight condition is added, the solution made carries out electrostatic spinning, spinning condition after being completely dissolved For voltage 15kv, receiving range is 25cm, and injection speed is 1ml/h, and receptions medium is deionized water, and reception medium is with 400 Turn/speed of min do not stop to stir, injection finish rear product through washing centrifugation, be dried after multiple cellulose acetate Nanowire is obtained Dimension；

(2) material prepared by step (1) is mixed together and uniformly adjusts afterwards with aqueous acrylic emulsion and other leftover materials Viscosity, obtains final product after deaeration, 200 mesh sieves excessively.

Prepared water paint main performance index is as follows:

Test event	Technical specification
		Solid content	42.8%
Viscosity (applies 4 glasss)	36
		Hardness	4h
Film-formation result	Good
		Surface drying time	36min
Appearance of film	Flat smooth
		Voc content	4.1g/l
Pliability	2 grades
		Resistance to water	168h is without exception
Water penetration	0.42ml
		Scrubbing resistance number of times	>=4500 times
Stain resistance	7%
		Fire resistance period (fiery 500 DEG C of the temperature of the back of the body)	50min undercoating is non-foaming

Above-mentioned test is all followed relevant criterion and is carried out.

Claims (2)

1. a kind of wood artwork with the water paint containing high rigidity fire-retardant multiple cellulose acetate nanofiber it is characterised in that This water paint is prepared by the raw material of following weight portion: solid content is water-borne acrylic resin emulsion 30-40 of 40-50%, gathers Silicon boroxane 1-1.5, cellulose acetate 4-5, nano-ceramic powder 0.5-1, appropriate deionized water, polyoxyethylene alkyl ether 0.1- 0.2nd, organic silicon defoamer 0.1-0.2, n, n- dimethylformamide 15-25, acetone 30-40.

2. the water containing high rigidity fire-retardant multiple cellulose acetate nanofiber for a kind of wood artwork as claimed in claim 1 The preparation method of property paint is it is characterised in that described preparation method is:

(1) first cellulose acetate, Polyborosiloxane are put into n, in n- dimethylformamide, acetone composite solution, stir to it Nano-ceramic powder, sonic oscillation 6-8h under airtight condition is added, the solution made carries out electrostatic spinning, spinning bar after being completely dissolved Part is: voltage 15-20kv, and receiving range is 25-30cm, and injection speed is 1-1.5ml/h, and reception medium is deionized water, connects Receive medium turned with 400-500/speed of min do not stop to stir, injection finish rear product through washing centrifugation, be dried after Composite vinegar is obtained Acid cellulose nanofiber；

(2) material prepared by step (1) is mixed together and uniformly adjusts afterwards with aqueous acrylic emulsion and other leftover materials Viscosity, through deaeration, sieve after obtain final product.