CN105820669A - Tearable spray film and preparation method thereof - Google Patents

Abstract

The invention provides a tearable spray film and a preparation method thereof. The spray film is prepared from 5-10% of synthetic rubber, 5-15% of n-heptane, 20-40% of a naphtha solvent, 5-10% of xylene, 1-5% of butanone, 2-9% of heptanon, 0.5-1.5% of pigment, 0.1-0.5% of fumed silica and 30-50% of dimethyl ether. The spray film has proper adhesive force and good flexibility and can be torn off and stripped from an object in flake; besides, bubbles and pits are not likely to be formed due to coloring uniformity and smoothness, and a substrate or an original color is not corroded or damaged due to the mild formula.

Description

A kind of tearable spray film and preparation method thereof

Technical field

The present invention relates to a kind of membranous type being easily peeled spray paint.

Background technology

Modern people follow the fashion changeable life, decoration of liking changing colour automobile, furniture or electrical equipment.

Particularly, along with the raising of people's living standard, automobile is the most no longer luxury goods, and car detailing has been the hottest The industry of door, vehicle body changes colour a big focus especially.Aerosol paint, because of the feature that it is easy and simple to handle, color variety is various, forms Carry out the first-selection that vehicle body changes colour, especially wheel hub for numerous automobile players to change colour.

But mostly traditional spraying paint is to be attached to change colour on object by chemistry bond energy, strong to substrate adhesion, molding of typically painting The most just being difficult to clean off changing, the man-hour that colour changing is consumed is very large, troublesome.And the solvent of tradition paint is to ground or former paint all There is stronger corrosiveness.

Existing market is popular changes colour with tearable spraying paint of spray membranous type, but such spray film generally exists following defect:

1, spray paint uneven, bubble, pit too much；

2, paint film is peeled off and is removed inconvenience, is difficult to larger area in blocks and peels off, retains the more mottle being difficult to and peeling off, still Need by solvent clean.

3, ground or former paint there is stronger corrosiveness.

Summary of the invention

For overcoming disadvantages described above, the invention provides a kind of tearable spray film being easily peeled and preparation method thereof, this spray film has suitable When adhesive force and preferable pliability, stripping object can be torn in flakes.

Described spray film is made up of following component by mass percentage: synthetic rubber 5-10%, normal heptane 5-15%, solvent stone Cerebrol 20-40%, dimethylbenzene 5-10%, butanone 1-5%, two heptanone 2-9%, pigment 0.5-1.5%, aerosil 0.1-0.5%, dimethyl ether 30-50%.

Optimum ratio is: synthetic rubber 5.5%, normal heptane 10%, solvent naphtha 25%, dimethylbenzene 6%, butanone 3%, two Heptanone 9%, pigment 1%, aerosil 0.5%, dimethyl ether 40%.

The preparation method of spray film, it is characterised in that comprise the following steps:

(1) dispersion: normal heptane, dimethylbenzene are put into scuffing of cylinder bore, stirs with dispersion machine, put into synthetic rubber while stirring, extremely Solution clear；Then, aerosil and pigment are put into while stirring；Disperse with the rotating speed of 2000 turns/min again Within 30 minutes, obtain thick mill base；

(2) grind: thick mill base grinder grinds suitable fineness repeatedly, and grinding temperature is 50-60 DEG C, obtains thin mill base；

(3) dilution: put into remaining component in thin mill base and be diluted, stir with dispersion machine, adjusts viscosity, mistake Filter mechanical admixture, must spray coating materials liquid；

(4) it is filled into tank, filling dimethyl ether, obtain target product.

The present invention is sprayed film and is had the advantage that relative to prior art

1, inventive formulation uses synthetic rubber to be main film forming material, ground can be produced elastic absorption but be formed without real Chemical bond attachment；And the principle being dependent on elastic absorption forms " false attachment ", the pulling force of appropriateness only need to be imposed, Complete stripping, has suitable adhesive force and pliability, and adhesive force is stable, is difficult to depainting, it is possible to tear overburden in flakes Body.

2, the present invention spray film can by spraying film forming, it is not necessary to by other instruments, easy construction is simple.

3, the granules of pigments of this spray film is fine and smooth, and uniform coloring is smooth, is difficult to bubble or pit.

4, this spray film uses substantial amounts of low polarity Weak solvent, and formula is gentle, does not corrodes or damage ground or primary colors, after stripping The primary colors color and luster of object is still kept intact.

Detailed description of the invention

Below in conjunction with specific embodiment, the present invention is described further.

One, the preparation method of product of the present invention, comprises the following steps:

1, dispersion: normal heptane, dimethylbenzene are put into scuffing of cylinder bore, stirs with dispersion machine, put into synthetic rubber while stirring, directly To solution clear；Continue to put into while stirring aerosil and pigment, improve dispersing speed, with 2000 turns / min moves to milling zone and grinds after disperseing 30 minutes.

2, grind: with grinder master grind several times, until fineness is qualified.In process of lapping, mill base temperature controls 50-60 DEG C, do not allow >=75 DEG C.

3, dilution: the mill base after grinding puts into the dilution of remaining component solvent, then is uniformly dispersed with dispersion machine, adjusts material Fluid viscosity, to qualified, removes mechanical admixture with strainer filtering.

4, quality inspection is carried out, filling fill, add valve, compacting seals, and fills liquefied dimethyl ether, and check weighing leaks hunting, and adds Dress button lid.

Two, prepare embodiment sample by the formula in table 1, test this using the spray film that certain factory in the market produces as comparison The performance of embodiment sample, performance using spray film outward appearance, be easily peeled degree, damage to ground and primary colors refers to as test Mark.

Method of testing: spray film and the comparison of each embodiment are sprayed film and be sprayed at nave boss and the front cover of same material condition respectively On, only spraying 1/2nd areas, another 1/2nd areas do not process, and after peeling off spray film, two parts carry out contrast inspection Survey spray film to ground and the damage of primary colors.

Result of the test is shown in Table 2.

Table 1

Table 2

Claims (3)

1. a tearable spray film, it is characterised in that described spray film is made up of following component by mass percentage: synthesis rubber Glue 5-10%, normal heptane 5-15%, solvent naphtha 20-40%, dimethylbenzene 5-10%, butanone 1-5%, two heptanone 2-9%, face Material 0.5-1.5%, aerosil 0.1-0.5%, dimethyl ether 30-50%.

Spray film the most as claimed in claim 1, it is characterised in that described spray film is by mass percentage by following component system Become: synthetic rubber 5.5%, normal heptane 10%, solvent naphtha 25%, dimethylbenzene 6%, butanone 3%, two heptanone 9%, pigment 1%, aerosil 0.5%, dimethyl ether 40%.

3. spray the preparation method of film as claimed in claim 1 or 2, it is characterised in that comprise the following steps:

(1) dispersion: normal heptane, dimethylbenzene are put into scuffing of cylinder bore, stirs with dispersion machine, put into synthetic rubber while stirring, extremely Solution clear；Put into aerosil and pigment while stirring；30 points are disperseed again with the rotating speed of 2000 turns/min Clock obtains thick mill base；

(2) grind: thick mill base grinder is ground to suitable fineness repeatedly, and grinding temperature is 50-60 DEG C, obtains thin mill base；

(3) dilution: put into remaining component in thin mill base and be diluted, stir with dispersion machine, adjusts viscosity, mistake Filter mechanical admixture, must spray coating materials liquid；

(4) it is packed into tank, fills dimethyl ether, obtain target product.