Car light protection hydrophobic oleophobic microporous barrier and manufacture method thereof
Technical field
The present invention relates to car light protection field, particularly relate to a kind of car light protection hydrophobic oleophobic microporous barrier and manufacture method thereof.
Background technology
Car light forms cross-ventilation by the upper diverse location air-vent of light fixture, in lamp, steam raises with the temperature in lamp and discharges outside lamp from the air-vent of upper position, the air-vent of upper/lower positions constantly supplements lamp outer air, thus reduce the ambiguous phenomenon generation of the scattering of steam to light, microporous membrane is used in car light protection aspect, though the air in car light can be made to regulate pressure balance by this film convection current, reach free of contamination dirt close, but cannot enter in housing by the steam stoping or reduce in environment when automobile is stopped, be trapped in that wetness in housing is too high will have a strong impact on the performance of the performance of car light.
In many big and medium-sized cities, " overload ", the waste gas of motor vehicle emission causes environmental pollution to the quantity reality of automobile.Vehicle exhaust major pollutants are hydrocarbon, oxynitrides, carbon monoxide, sulfur dioxide, lead-containing compounds, Benzpyrene and solid particulate matter etc., in haze weather and overcast and rainy, these pollutants can stick in the body surface of not water and oil repellant, form dirt, when these oiliness contaminant particles are deposited on the microporous membrane surface of not water and oil repellant, the microporous membrane surface of water and oil repellant does not have self-cleaning ability, with the passing of time the air-locked blanket layer of one deck is defined, the permeability of the microporous membrane of not water and oil repellant is had a strong impact on or airtight, car light convection current of breathing freely is made to regulate the ability of car light humidity greatly to reduce.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of car light protection hydrophobic oleophobic microporous barrier and manufacture method thereof, there is the function that similar lotus leaf surface is self-cleaning, the pollutants such as rainwater, profit, dust drop automatically, automobile exhaust pollution thing can be prevented to be bonded in microporous membrane surface, be maintained by the function that this microporous barrier cross-ventilation regulates car light humidity for a long time, car light performance is normally played.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of car light protection hydrophobic oleophobic microporous barrier, comprising: hydrophobic oleophobic finishing agent and microporous membrane, described microporous membrane is coated with hydrophobic oleophobic finishing agent.
In a preferred embodiment of the present invention, described microporous membrane is the microporous membrane of expanded PTFE.
In a preferred embodiment of the present invention, described hydrophobic oleophobic finishing agent is Organic fluoride hydrophobic oleophobic finishing agent, and described Organic fluoride hydrophobic oleophobic finishing agent comprises the raw material of following parts by weight: dodecafluoroheptyl methacrylate 40 ~ 60%, hydroxyethyl methacrylate 1 ~ 3%, emulsifying agent 30 ~ 50% and initator 5 ~ 10%.
In a preferred embodiment of the present invention, described emulsifying agent comprises NPE and neopelex, and described NPE and neopelex weight proportion are 3:2.
In a preferred embodiment of the present invention, described initator is ammonium persulfate.
In a preferred embodiment of the present invention, the coating thickness of described hydrophobic oleophobic finishing agent is 0.005 ~ 0.01mm.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the manufacture method providing a kind of car light protection hydrophobic oleophobic microporous barrier, comprises the following steps:
(1) manufacture of microporous membrane;
(2) preparation of hydrophobic oleophobic finishing agent;
(3) the car light protection preparation of hydrophobic oleophobic microporous barrier: hydrophobic oleophobic finishing agent feeds in raw material at coating roller, and regulate coating layer thickness, microporous membrane unreels, with cylinder contact coating, cylinder heating preliminary drying, bakes, rolling, packaging.
In a preferred embodiment of the present invention, in step (3), the speed that unreels of microporous membrane is 1 ~ 3m/min.
In a preferred embodiment of the present invention, the temperature of step (3) intermediate roll heating preliminary drying is 95 ~ 105 DEG C, and preliminary drying time is 2 ~ 5min, and baking temperature is 140 ~ 160 DEG C, and the time of baking is 3 ~ 8min.
The invention has the beneficial effects as follows: the present invention has the self-cleaning function of similar lotus leaf surface, the pollutants such as rainwater, profit, dust drop automatically, make in the housing of car light, to reach free of contamination dirt level of confidentiality, automobile exhaust pollution thing can be prevented again to be bonded in microporous membrane surface, be maintained by the function that this microporous barrier cross-ventilation regulates car light humidity for a long time, car light performance is normally played.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of car light protection hydrophobic oleophobic microporous barrier one of the present invention preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, Organic fluoride hydrophobic oleophobic finishing agent, and 2, the microporous membrane of expanded PTFE.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1:
Embodiment 1
Hydrophobic oleophobic microporous barrier is used in a kind of car light protection, comprising: the microporous membrane 2 of Organic fluoride hydrophobic oleophobic finishing agent 1 and expanded PTFE, the microporous membrane 2 of described expanded PTFE is coated with Organic fluoride hydrophobic oleophobic finishing agent 1.
Described Organic fluoride hydrophobic oleophobic finishing agent 1 comprises the raw material of following parts by weight: dodecafluoroheptyl methacrylate 50%, hydroxyethyl methacrylate 2%, emulsifying agent 40% and ammonium persulfate initiator 8%, wherein, described emulsifying agent comprises NPE and neopelex, and described NPE and neopelex weight proportion are 3:2.
Embodiment 2
Hydrophobic oleophobic microporous barrier is used in a kind of car light protection, comprising: the microporous membrane 2 of Organic fluoride hydrophobic oleophobic finishing agent 1 and expanded PTFE, the microporous membrane 2 of described expanded PTFE is coated with Organic fluoride hydrophobic oleophobic finishing agent 1.
Described Organic fluoride hydrophobic oleophobic finishing agent 1 comprises the raw material of following parts by weight: dodecafluoroheptyl methacrylate 40, hydroxyethyl methacrylate 1%, emulsifying agent 50% and ammonium persulfate initiator 9%, wherein, described emulsifying agent comprises NPE and neopelex, and described NPE and neopelex weight proportion are 3:2.
Embodiment 3
Hydrophobic oleophobic microporous barrier is used in a kind of car light protection, comprising: the microporous membrane 2 of Organic fluoride hydrophobic oleophobic finishing agent 1 and expanded PTFE, the microporous membrane 2 of described expanded PTFE is coated with Organic fluoride hydrophobic oleophobic finishing agent 1.
Described Organic fluoride hydrophobic oleophobic finishing agent 1 comprises the raw material of following parts by weight: dodecafluoroheptyl methacrylate 60%, hydroxyethyl methacrylate 3%, emulsifying agent 30% and ammonium persulfate initiator 7%, wherein, described emulsifying agent comprises NPE and neopelex, and described NPE and neopelex weight proportion are 3:2.
A manufacture method for car light protection hydrophobic oleophobic microporous barrier, comprises the following steps:
(1) manufacture of the microporous membrane 2 of expanded PTFE: polytetrafluoroethyldispersion dispersion resin mixes with liquid extrusion aid and coloring agent, be incubated 32 DEG C of maturations, give and be pressed into cylinder blank, by rolling process, cylinder blank is laminated, slough extrusion aid, simple tension through heating, biaxial tension, thermal finalization, cooling, rolling;
(2) preparation of Organic fluoride hydrophobic oleophobic finishing agent 1: take each raw material according to weight proportion, be uniformly mixed;
(3) the car light protection preparation of hydrophobic oleophobic microporous barrier: Organic fluoride hydrophobic oleophobic finishing agent 1 feeds in raw material at point type coating roller, and regulate coating layer thickness, coating thickness is 0.005 ~ 0.01mm, the microporous membrane 2 of expanded PTFE unreels, and the speed of unreeling is 1 ~ 3m/min, with point type cylinder contact coating, cylinder heating preliminary drying, the temperature of heating preliminary drying is 95 ~ 105 DEG C, and preliminary drying time is 2 ~ 5min, bakes, baking temperature is 140 ~ 160 DEG C, the time of baking is 3 ~ 8min, rolling, packaging.
The present invention uses Organic fluoride hydrophobic oleophobic finishing agent, this finishing agent contains continuously arranged long perfluor alkane chain, due to its special chemical character, its surface tension is very low, not only far below the surface tension of water, also lower than the surface tension of oils, by arranging film surface, Organic fluoride hydrophobic oleophobic finishing agent deposits and is adsorbed in fiber surface, be combined with fiber by polar group, perfluor alkane chain is at the skin of film, form hydrophobic oleophobic rete, microporous fabrics surface is made to be covered with hydro-oleophobicity group, reduce or eliminate the suction-operated of microporous membrane fiber to water or oil, fiber critical surface tension is declined, thus make microporous membrane obtain water and oil repellant performance.
The beneficial effect of car light protection hydrophobic oleophobic microporous barrier of the present invention is:
1, the innovation and application of the present invention in car light protection automobile exhaust pollution, there is the function that similar lotus leaf surface is self-cleaning, the pollutants such as rainwater, profit, dust drop automatically, make in the housing of car light, to reach free of contamination dirt level of confidentiality, automobile exhaust pollution thing can be prevented again to be bonded in microporous membrane surface, be maintained by the function that this microporous barrier cross-ventilation regulates car light humidity for a long time, car light performance is normally played;
2, the defect problem solved in background technology is invented, the performance of this material meets car light completely and other small-sized sophisticated electronics (mobile phone, navigation terminal, microcomputer etc.) dependable performance plays, and meets in comprehensive requirements of protection such as waterproof and dustproof, grease proofing, moisture-inhibiting, anti-oxidant solution corrosion.
3, the present invention can further reduce car light elimination steam and vehicle exhaust to the design and manufacture cost of its performance impact, make shell moulding simplicity, degree of protection reaches IP68.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.