CN104341865A

CN104341865A - Preparation process of anti-cracking paint

Info

Publication number: CN104341865A
Application number: CN201410596261.4A
Authority: CN
Inventors: 刘星
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-31
Filing date: 2014-10-31
Publication date: 2015-02-11

Abstract

The invention discloses a preparation process of anti-cracking paint. The paint comprises the following ingredients in percentage by weight: 40 percent to 50 percent of nitrocotton, 20 percent to 25 percent of modified rosin resin, 10 percent to 15 percent of acrylic resin, 5 percent to 10 percent of zeolite powder and 10 percent to 15 percent of triethyl citrate. The preparation process has the advantages that a triethyl citrate reinforcing agent is added, so that the defect that nitrolacquer easily cracks is overcome; the technical flow process is simple, the cost is low, and wide application prospects are realized.

Description

A kind of preparation technology of crack resistence paint

Technical field

The present invention relates to a kind of method of modifying of paint, particularly a kind of crack resistence paint and preparation method thereof, belongs to organic chemical industry field.

Background technology

Before the history of painting can trace back to more than 4000 year, China working people just utilizes vegetables oil (as tung oil, Chinese catalpa oil) and natural raw lacquer to cover with paint, lacquer, colour wash, etc. tool face at that time, and solid rear formation has the film of protectiveness.B.C. 1500, in France and Hispanic cavern, paint was for drawing and decoration.B.C. 1500, Egyptian's dyestuff such as indigo and madder manufactured blue and red pigment, but this paint is still far from perfect.In 18th century, due to the exploitation to Semen Lini oil and zinc oxide, paint industry is developed rapidly.In 20th century, painting technology has had significant development, has occurred that clinging power is larger, the paint of higher, fire-retardant, the anticorrosive shades of colour high with thermostability of glossiness.Along with scientific technological advance, the rapid development of petrochemical complex and organic synthesis industry especially in recent decades, many new oil paint materials are come out one after another.

[0003]current paint has more than several thousand kinds, and the past is to paint Classification And Nomenclature very disunity.Chemical industry department of China, now to paint classification based on its main film forming substance, paint is divided into 18 large classes.By whitewashing position classification, be mainly divided into wall paint, metallic paint, wood lacquer.Wall paint comprises exterior wall paint, interior wall paint and end face paint, mainly emulsion paint; Metallic paint is enamel paint mainly; Wood lacquer mainly contains pyroxylin(e)finish, Polyester Paint etc.

Pyroxylin(e)finish is that more common woodenware and finishing are painted at present, main film forming matter is based on nitro-cotton, the soft or hard resins such as Synolac, modified rosin resin, acrylic resin, aminoresin are coordinated jointly to form, solvent mainly contains ester class, ketone, alcohol ethers equal solvent, the solubility promoters such as alcohols, and the thinner such as benzene class.Pyroxylin(e)finish is mainly used in the aspect such as application, house decoration, coated metal, general cement application of woodenware and furniture.Pyroxylin(e)finish is dry rapidly, less demanding to painting environment, have good hardness and brightness, but its shortcoming is, duration of service the slightly long drawback that just easily goes out to ftracture.Triethyl citrate, as excellent softening agent, is widely used in paint modification dosage.Add triethyl citrate, can interact with nitro-cotton in pyroxylin(e)finish, make the orientation of intrinsic dipole in paint increase and cause intermolecular dipole-dipole force to increase, paint adhesion power is increased, thus makes paint not easy to crack.

Summary of the invention

The object of this invention is to provide the preparation technology of a kind of crack resistence paint.

For realizing this purpose, this paint comprises the material of following weight percent:

nitro-cotton 40%-50%

Modified rosin resin 20%-25%

Acrylic resin 10%-15%

Zeolite powder 5%-10%

Triethyl citrate 10%-15%

A kind of preparation method of crack resistence paint comprises the steps:

(1) by weight metering, nitro-cotton: the ratio of modified rosin resin=2:1 is put into container and carried out mixing and stirring;

(2) slowly instill Emulsion acrylic resin in the mixture and carry out emulsification;

(3) appropriate zeolite powder is rendered in step emulsion (2), be stirred to till talcum powder do not precipitate;

(4) in the (3) prepared emulsion of step, slowly add triethyl citrate, carry out modification;

(5) obtained product is completely cut off aeroseal, preserve 20 days, namely obtain a kind of crack resistence paint.

The present invention has following advantages and characteristic;

(1), by adding a kind of triethyl citrate, overcome pyroxylin(e)finish cracking drawback;

(2) the preparation technology of this paint is less demanding, and flow process is simple;

This paint manufacturing cost lower, be with a wide range of applications.

Embodiment

Embodiment one:

A kind of crack resistence paint of the present invention, this paint comprises the material of following weight percent:

nitro-cotton 40%-50%

Modified rosin resin 20%-35%

Acrylic resin 10%-15%

Zeolite powder 5%-10%

Triethyl citrate 10%-15%

A kind of preparation method of crack resistence paint comprises the steps:

(1) get the nitro-cotton of 40 parts and 20 parts of modified rosin resins to put into container and mix, stir;

(2) slowly instill 15 parts of Emulsion acrylic resins in the mixture and carry out emulsification;

(3) the zeolite powder dropping into 10 parts, in step emulsion (2), is stirred to till talcum powder do not sink;

(4) in the (3) prepared emulsion of step, continue the blown castor oil adding 15 parts, carry out modification;

Embodiment two:

nitro-cotton 40%-50%

Modified rosin resin 20%-25%

Acrylic resin 10%-15%

Zeolite powder 5%-10%

Triethyl citrate 10%-15%

A kind of preparation method of crack resistence paint comprises the steps:

(1) get the nitro-cotton of 50 parts and 25 parts of modified rosin resins to put into container and mix, stir;

(2) slowly instill 10 parts of Emulsion acrylic resins in the mixture and carry out emulsification;

(3) the zeolite powder dropping into 5 parts, in step emulsion (2), is stirred to till talcum powder do not sink;

(4) in the (3) prepared emulsion of step, continue the triethyl citrate adding 10 parts, carry out modification;

Claims

1. a preparation technology for crack resistence paint, is characterized in that the material comprising following weight percent: nitro-cotton (40%-50%), modified rosin resin (20%-25%), acrylic resin (10%-15%), zeolite powder (5%-10%), triethyl citrate (10%-15%).

2. the preparation technology of a kind of crack resistence paint according to claim 1, wherein the nitrogen content of nitro-cotton is 5%-10%.

3. the preparation technology of a kind of crack resistence paint according to claim 1, it is characterized in that, described nitro-cotton and modified rosin resin, its additional proportion (by weight) is 2:1.