Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of seamless ball curtain, this seamless ball curtain has good image effect.Content of the present invention is as follows:
A kind of seamless ball curtain, comprise seamless spherical shell and imaging layer, described seamless spherical shell has opening, and described imaging layer is attached to seamless spherical shell surface, and described seamless spherical shell is sprayed by resin compound and makes.
Described resin compound is unsaturated polyester system, comprises unsaturated polyester, unsaturated monomer, the first hardening agent and promoter;
Described first hardening agent is hyperis, cyclohexanone peroxide, methyl ethyl ketone peroxide or benzoyl peroxide;
Described promoter is naphthenic acid, cobalt iso-octoate or tertiary amine.Promoter can fast reaction speed, and addition adjusts according to solidification required time.
Described unsaturated polyester is the polycondensation product of unsaturated dicarboxylic acid and polyvalent alcohol, and now described unsaturated monomer is described unsaturated dicarboxylic acid; Or described unsaturated polyester is the reaction product of one or more in unsatured epoxy resin and dicarboxylic acids, acrylic or methacrylic acid, and now described unsaturated monomer is described unsatured epoxy resin.
Described resin compound is epoxy-resin systems, comprises epoxy resin and the second hardening agent;
Described second hardening agent is selected from fatty amine, cycloaliphatic amines, aromatic amine and their modifier, can also be organic acid anhydride class or organic hydrazides.
Described epoxy resin is one or more in the unitary of bisphenol A type epoxy resin, bisphenol f type epoxy resin, bisphenol-A epoxy resin, A Hydrogenated Bisphenol A F type epoxy resin, glycidyl ester type epoxy resin and fatty alcohol or polynary glycidol ether.
Described resin compound is polyurethane resin systems, comprises component A and B component, and described component A is isocyanates, and described B component is polyvalent alcohol or polyamine.
Described isocyanates can be aromatic isocyanate, alicyclic isocyanate, aliphatic isocyanates and modified product thereof or its potpourri;
Described polyvalent alcohol is polyether glycol or polyester polyol;
Described polyamine is fatty amine, cycloaliphatic amines or aromatic amine.
Described unsaturated polyester system also comprises ultraviolet absorber.
Described epoxy-resin systems also comprises defoamer and ultraviolet absorber.
The projection spherical curtain tool using spraying method of the present invention to obtain has the following advantages: 1, the surfaces externally and internally of seamless spherical shell is very smooth, does not need to carry out grinding process; 2, the transparency of seamless spherical shell is good, quality is good, qualification rate high (more than 95%); 3, mould can do very thin, the easy demoulding; 4, resin film curing rate is fast, greatly increases production efficiency; 5, the imaging layer that another spray obtains on seamless spherical shell is even, can not produce the flaws such as current mark, overall raising drop shadow effect.In addition, ultraviolet aging action can effectively be stoped.
Embodiment
Below, further illustrate content of the present invention by embodiment, but protection scope of the present invention is not limited in embodiment.To the other changes and modifications that those skilled in the art makes when not deviating from the present invention's spirit and protection domain, be still included within scope.
Embodiment 1:
Pre-treatment: first, makes a whole spherical bladders, smears #8 wax with clean cotton equably on all outer surfaces of bladders, and the number of times of waxing, according to the size of bladders and the effect adjustment of smearing, generally smears twice.
Preparation resin compound: get the adjacent benzene-type unsaturated polyester resin of 1000 weight portions, first add the promoter (cobalt iso-octoate) of 1 weight portion and the hardening agent (cyclohexanone peroxide) of 1 weight portion, stir.
Promoter also can select cobalt naphthenate or tertiary amine, and hardening agent also can select hyperis, benzoyl peroxide or methyl ethyl ketone peroxide etc.
Add ultraviolet absorber 5 weight portion, to delay the xanthochromia speed of resin system.
The ratio of above-mentioned each component can change according to seasonal variations or room temperature change, also can adjust the ratio of each component according to the requirement of curing rate.
Spraying operation: the equatorial direction first along bladders sprays the above-mentioned resin compound prepared equably, then one time is sprayed equably perpendicular to equatorial direction, the outside surface of whole bladders is made to cover one deck resin compound equably (about the direction of spray ball, operator can from Row sum-equal matrix, as long as the requirement that is evenly distributed of the resin compound that can reach spraying).After the resin of last spraying solidifies completely, then repeat spraying operation, so for several times, until the resin of spraying reaches weight or the thickness of expection.
Mounting flange: 1, the bladders at the ball mouth place of spherical shell is cut, make one with the fiberglass stiffening ring of the ball mouth similar diameters of spherical shell, with above-mentioned resin compound, stiffening ring is installed to the ball mouth inner face of spherical shell.2, do a glass fiber reinforced plastic flange with flange mould, outside surface can use black gel coat.3, with adjacent benzene-type unsaturated polyester resin, promoter (cobalt iso-octoate) and talcum powder modulating mixture, finally add appropriate hardening agent (cyclohexanone peroxide), the inner side of fiberglass flange is filled in rapidly after stirring, then ball mouth is put in flange exactly, lightly spherical shell is down pressed, make unnecessary potpourri overflow.After the potpourri of ball mouth parches completely, potpourri unnecessary for ball mouth is removed, and polishes smooth.
Stripping operation a: crack is pried open from spherical shell in bladders edge with thin blade; Fill at leisure from crack by Steel Ruler, make to produce a space between bladders and spherical shell, in the position at Steel Ruler place, bladders is cut an openning with cutting machine; Steel Ruler is released carefully, gets other local repetitive operations repeatedly, until bladders is cut into multi-disc.The bladders of chopping is pulled out carefully from spherical shell, and the surfaces externally and internally of spherical shell is rinsed well and wipes clean.If inside surface has obvious cut, cut can be got rid of with the sand papering of #360, #600 respectively.
Also can remove halation by the following method if desired: adjust evenly with thinning agent by dumb light paint (volume ratio of thinning agent and dumb light paint is 1: 3), dumb light paint is sprayed equably at the inside surface of spherical shell with clean spray gun, after dispersing Deng coating cloud, be put on testing jig and test, if also have halation phenomenon, continue there being the place spray dumb light paint of halation, until eliminate halation completely.
Spraying imaging layer: obtain potpourri with gloss varnish conditioning function powder, proportioning is 1 gram of function powder (granularity is about the titania powder of 1 micron): 6 milliliters of gloss varnish, with mulser, potpourri emulsify at a high speed is sheared about 5 minutes, by dust removing cloth by complete for the outside surface of spherical shell wiped clean, with spray gun, the potpourri of described emulsify at a high speed is sprayed to equably the outside surface of spherical shell; After surface done substantially, the aforementioned mixture of spray containing function powder again.Spraying number of times depends on the size of spherical shell and the weight of spraying function powder; After outside surface drying, spherical shell is put on testing jig and tests, if also have the phenomenon of light leak, also will continue spray function powder, until imagewise uniform is also completely without light leakage phenomena, obtain seamless ball curtain.
Embodiment 2:
Pre-treating method is with embodiment 1.
Preparation epoxy resin composition A:
Liquid bisphenol A epoxy resin 400 weight portion;
Liquid bisphenol F type epoxy resin 250 weight portion;
Isosorbide-5-Nitrae butanediol diglycidyl ether 50 weight portion;
Fully be uniformly mixed and obtain resin compound A.
Preparation curing agent mixture B:
M-xylene diamine 100 weight portion;
Triethylene tetramine 20 weight portion;
Polyetheramine 60 weight portion;
Fully be uniformly mixed and obtain curing agent mixture B.
Get 700 parts by weight resin potpourri A, add the curing agent mixture B of 300 weight portions, then add the defoamer of 20 weight portions, stir.
In above-mentioned system, add ultraviolet absorber 5 weight portion, obtain target mixture, to delay the xanthochromia speed of resin system.
Spraying operation: method of operating is identical with embodiment 1, unlike, bladders needs ball to heat at 55 ~ 65 DEG C after spraying the target mixture of the present embodiment, repeat spraying operation again, then deliver to and be heating and curing under foregoing temperature range etc. after target mixture solidification.So repeated multiple times, until the resin of spraying reaches weight or the thickness of expection.
Stripping operation is identical with embodiment 1 with the operation of spraying imaging layer.
Embodiment 3:
Method of operating is identical with embodiment 1, and the formula of the resin compound of the preparation that difference is is different, as follows:
Unsaturated polyester 1000 weight portion;
Ultraviolet absorber 3 weight portion;
Promoter 2 weight portion;
Hardening agent 2 weight portion.
Note: the addition of hardening agent and promoter determines the curing rate of resin.Add 2 weight portion hardening agent and promoter, the operating environment (lower than room temperature, higher than 10 degrees Celsius) that applicable temperature is lower.
Embodiment 4:
Method of operating is identical with embodiment 2, and the formula unlike the resin compound of preparation is different, as follows:
Epoxy resin composition:
Liquid bisphenol A epoxy resin 500 weight portion;
Bisphenol-A epoxy resin 240 weight portion;
Butyl glycidyl ether 60 weight portion.
Curing agent mixture:
Cyclohexanediamine 100 weight portion;
Diethylenetriamine 30 weight portion;
Polyetheramine 70 weight portion;
Ultraviolet absorber 3 weight portion.
Embodiment 5:
Method of operating is identical with embodiment 1, and the formula of the resin compound of the preparation that difference is is different, as follows:
Unsaturated polyester 1000 weight portion;
Ultraviolet absorber 4 weight portion;
Promoter 1.5 weight portion;
Hardening agent 1.5 weight portion;
Note: the amount of hardening agent and promoter, determines the curing rate of resin.Add hardening agent and the promoter of 1.5 weight portions, be applicable to the operating environment of room temperature.
Embodiment 6:
Method of operating is identical with embodiment 2, and the formula of the resin compound of the preparation that difference is is different, as follows:
Epoxy resin composition:
Bisphenol f type epoxy resin 550 weight portion;
Bisphenol-A epoxy resin 100 weight portion;
1,6 hexanediol diglycidyl ether 50 weight portions;
Curing agent mixture:
Isophorone diamine 100 weight portion;
Making methylpentamethylenediamine diamine 80 weight portion;
Polyetheramine 70 weight portion;
Ultraviolet absorber 4 weight portion;
Embodiment 7:
Method of operating is identical with embodiment 2, and the formula of the resin compound of the preparation that difference is is different, as follows:
Polyether glycol 200 weight portion;
Polyester polyol 300 weight portion;
Modified cycloaliphatic isocyanates 500 weight portion
Ultraviolet absorber 3.5 weight portion;
The evaluation of the film layer of the seamless ball curtain (projection ball) that embodiment 1,3 and 5 obtains is as follows:
Embodiment 1 medium ultraviolet absorbing agent weight portion is 5, because ultraviolet absorber is originally as pale yellow powder, if addition crosses the color that senior general affects resin compound.This addition (5 weight portion) can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), and the speed aging in the later stage can slow down gradually.The weight portion of promoter and hardening agent is all 1, and the curing rate of resin compound is slow at normal temperatures, estimates just can solidify for 20 minutes.So this formula is better at weather hotter summer (or temperature higher operating environment) operating effect.Projection ball's material that this formula makes is more transparent.There is good anti-strike capability: 4 ~ 7Nm/m2, have stronger tensile strength/Mpa:10 ~ 20, poor bending strength/MPa:3 ~ 7.
Embodiment 3 medium ultraviolet absorbing agent weight portion is 3, joins the color substantially not affecting resin in resin.In addition, the projection ball of spray still has the ability of stronger anti-ultraviolet aging, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), and the aging speed of the time below can slow down gradually.Promoter and hardening agent weight portion are all 2, and resin just has very fast curing rate at normal temperatures, estimate will solidify for about 5 minutes.So this formula is only used in weather colder winter.Projection ball's material that this formula makes is more transparent.There is good anti-strike capability: 4 ~ 7Nm/m
2, have stronger tensile strength/Mpa:10 ~ 20, poor bending strength/MPa:3 ~ 7.
Embodiment 5 medium ultraviolet absorbing agent weight portion is 4.Substantially the color of resin compound is not affected.There is the ability of very strong anti-ultraviolet aging in the projection ball of now spray, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), and the speed aging in the later stage can slow down gradually.Promoter and hardening agent weight portion are all 1.5, and the fixed line speed of resin compound, at normal temperatures than moderate, is estimated just can solidify for 7 ~ 8 minutes.So this formula operates better in the spring that weather is comparatively felt nice and cool and autumn.Projection ball's material that this formula makes is more transparent.There is good anti-strike capability: 4 ~ 7Nm/m
2, have stronger tensile strength/Mpa:10 ~ 20, poor bending strength/MPa:3 ~ 7.
The evaluation of the image effect of the seamless ball curtain (projection ball) that embodiment 1,3 and 5 obtains is as follows:
The transparency of the seamless ball curtain that the method makes is fine, and transmitance reaches more than 80%; Imaging clearly; Contrast better 300: 1, visual angle is 120 degree; Color and luster is more even.
The evaluation of the film layer of the seamless ball curtain (projection ball) that embodiment 2,4,6 and 7 obtains is as follows:
Embodiment 2 medium ultraviolet absorbing agent weight portion is 5.Because ultraviolet absorber is originally as pale yellow powder, if added again, the color of resin compound will be affected, there is the ability of anti-ultraviolet aging strong especially in the projection ball of now spray, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), further, the aging speed of the time below can slow down gradually.Epoxy resin composition 800 weight portions+curing agent mixture 200 weight portion.The spherical shell that this formula makes has good plasticity, is not easy to break.But hardness can decline to some extent.If again increase the amount of Resin A material, will change the characteristic of resin, make the spherical shell produced very soft, environment temperature is higher a little will be out of shape.There is good anti-strike capability: 10 ~ 14Nm/m
2, tensile strength/Mpa:46 ~ 70, bending strength/MPa:90.0 ~ 120.0, compressive strength/MPa:87.0 ~ 174.0.
Embodiment 4 medium ultraviolet absorbing agent weight portion is 3, do not affect the color of resin compound, the projection ball of now spray still has the ability of stronger anti-ultraviolet aging, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), further, can slow down gradually in the speed that the later stage is aging.Epoxy resin composition 700 weight portions+curing agent mixture 300 weight portion.The spherical shell that this formula makes, plasticity declines to some extent, slightly puts crisp, is not suitable for colder that winter uses again.If again increase the amount of Resin A material, will the characteristic of resin be changed, and make the spherical shell produced very crisp, easily break.There is good anti-strike capability: 10 ~ 14Nm/m2, tensile strength/Mpa:46 ~ 70, bending strength/MPa:90.0 ~ 120.0, compressive strength/MPa:87.0 ~ 174.0.
Embodiment 6 medium ultraviolet absorbing agent weight portion is 4.Substantially the color of resin compound is not affected, there is the ability of stronger anti-ultraviolet aging in the projection ball of now spray, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), and the aging speed of the time below can slow down gradually.Epoxy resin composition 700 weight portions+curing agent mixture 300 weight portion.The spherical shell that this formula is produced has good plasticity, is not easy to break, and also has good hardness simultaneously.There is good anti-strike capability: 10 ~ 14Nm/m2, tensile strength/Mpa:46 ~ 70, bending strength/MPa:90.0 ~ 120.0, compressive strength/MPa:87.0 ~ 174.0.
Embodiment 7 medium ultraviolet absorbing agent weight portion is 3.5.Substantially the color of resin compound is not affected, there is the ability of stronger anti-ultraviolet aging in the projection ball of now spray, can guarantee that ball curtain controls 3% to 5% at the aging speed in early stage (in 2 years), and the aging speed of the time below can slow down gradually.Polyether glycol 200 weight portion, polyester polyol 300 weight portion, modified cycloaliphatic isocyanates 500 weight portion.The spherical shell that this formula is produced has good plasticity, is not easy to break, and also has good hardness simultaneously; In the environment that humidity is high, easily there is bubble in spherical shell.There is superpower anti-strike capability: 10 ~ 26Nm/m2, tensile strength/Mpa:43 ~ 70.
The evaluation of the image effect of the seamless ball curtain (projection ball) that above-described embodiment 2,4,6 and 7 obtains is as follows:
The transparency of the seamless ball curtain that the method makes is fine, and transmitance reaches more than 80%; Imaging clearly; Contrast better 300: 1; Visual angle is about 120 degree; Color and luster is more even.