A kind of preparation and application of organosilicon polymer superhydrophobic fabric finishing agent
Technical field
The present invention relates to a kind of preparation methods of superhydrophobic fabric finishing agent, and in particular to a kind of organosilicon polymer is super thin
The preparation and its application method of water fabric finishing agent.
Background technique
Lotus leaf has the characteristics that mud is without contaminating out.It is inspired by lotus leaf effect, super hydrophobic surface receives significant attention.It is super thin
Water surface refers to that water droplet is greater than 150 ° in its surface contact angle, and the lower surface of roll angle has excellent self-cleaning performance,
The fields such as automatically cleaning textile, water-oil separating, anti-corrosion, anti-freeze are with a wide range of applications.The research of super hydrophobic surface is drawn
Extensive interest is played.
Production, the life of textile and people are closely bound up.The research and development of functional textile is increasingly by weight
Depending on significantly improving people's lives quality.Different from other function textile, superhydrophobic fabric is the same because having lotus leaf
Self-cleaning effect and be concerned.The preparation of super hydrophobic surface, which generally requires, first constructs coarse surface texture, then carries out low
Surface can be modified and be made.Textile itself has certain micron order texture structure, and therefore, the preparation of superhydrophobic fabric is concentrated
In the preparation of novel fabric finishing agent and in terms of how improving itself and fabric being firmly combined property.The type of superhydrophobic fabric finishing agent
It is very more, including fluorine silicon resin, fluorocarbon resin, organic siliconresin etc..But these finishing agents, which are used to prepare superhydrophobic fabric, to be deposited
Water-wash resistance is poor, stability is not high, a series of problems, such as containing PFOS/PFOA, become the bottle of superhydrophobic fabric preparation and application
Neck.Therefore, some to study the raising for focusing on superhydrophobic fabric stability, i.e., it is firm in conjunction with fabric how to improve fabric finishing agent
In terms of solidity.Then patent CN102352549A is coated, is finally carried out low first in fabric surface dip-coating inorganic nano-particle
Surface can change surname, obtain superhydrophobic fabric.Patent CN100595373C is using gold chloride and citric acid as catalyst, in cotton fabric table
Face supported nano-gold particle then carries out low-surface-energy modification, obtains superhydrophobic fabric, and after repeatedly folding, ultra-hydrophobicity is good
It is good.Patent CN102174737A, in fabric surface covalent bond polyalkyl methacrylate, has by irradiation grafting technology
Certain water-fastness stability.Although these methods improve the stability of superhydrophobic fabric to a certain extent, still need
By fabric surface activation, x ray irradiation x and low-surface-energy modification etc. multiple steps could complete, not only influence fabric intensity,
Appearance, and complex process, the serious practical application for limiting superhydrophobic fabric.Therefore, how to be made super thin by simple method
Water fabric finishing agent, and being applied to the excellent superhydrophobic fabric of processability by simple technique is that this field is urgently to be resolved
Difficult point.
Summary of the invention
The purpose of the present invention is to solve problem of the existing technology, provide that a kind of organosilicon polymer is super-hydrophobic to be knitted
The preparation method of object finishing agent;
It is a further object of the present invention to provide the specifically used methods of above-mentioned organosilicon polymer superhydrophobic fabric finishing agent.
(1) preparation of organosilicon polymer superhydrophobic fabric finishing agent
The preparation of organosilicon polymer superhydrophobic fabric finishing agent of the present invention is by organosilan and organosilicon in alkaline alcohol solution
Middle hydrolytic condensation is made.Specific preparation process are as follows: organosilicon and organosilan are added in alkaline alcohol-water solution, 25 ~
2 ~ 48h of hydrolytic condensation at 80 DEG C;It is cooled to room temperature, adjusts pH to neutrality, obtain superhydrophobic fabric finishing agent.
The organosilicon is poly dimethyl dimethoxysilane, polyphenylene silicone resin, polydimethyl siloxanes, poly- methyl second
At least one of alkenyl silicone resin;Volume fraction of the organosilicon in alcohol-water solution is 0.5% ~ 5%.
The organosilan is tetraethoxysilane, sodium methyl silicate, potassium methyl silicate, waterglass, aminopropyl trimethoxy
Base silane, 3- (the third oxygen of 2,3- epoxy) propyl trimethoxy silicane, methyltriethoxysilane, ethyl triethoxysilane, second
Alkenyl triethoxysilane, phenyl triethoxysilane, octyltri-ethoxysilane, dodecyl triethoxysilane, 16
At least one of alkyl triethoxysilane, octadecyltriethoxy silane and corresponding methoxy silane;Organosilan
Volume fraction in alkaline alcohol-water solution is 1% ~ 4%.
It is described alkalinity alcohol-water solution in, alcohol be at least one of methanol, ethyl alcohol, isopropanol, ethylene glycol, glycerol, alcohol with
The volume ratio of water is 9:1 ~ 1:1.
In the alkalinity alcohol-water solution, alkali be ammonium hydroxide, sodium hydroxide, potassium hydroxide, ethylenediamine, in triethylamine at least
One kind, alkali are 0.2% ~ 2% in the concentration of alcohol-water solution.
Organosilicon polymer superhydrophobic fabric finishing agent prepared by the present invention contains hydrophobic grouping and coupling group, in dip-coating
In high temperature cure process, coupling group can be chemically bonded with the fiber of fabric, and hydrophobic grouping can play super thin
Water effect.
(2) preparation of superhydrophobic fabric
Superhydrophobic fabric finishing agent prepared by the present invention ethanol/water is diluted 5 ~ 10 times, superhydrophobic fabric finishing agent is added
0.1% ~ 1% acetic acid is as catalyst;Fabric is dipped in wherein 2 ~ 10min of standing, then in 80 ~ 180 DEG C of 2 ~ 10min of solidification, i.e.,
Obtain superhydrophobic fabric.
In order to improve the dispersing uniformity of superhydrophobic fabric finishing agent, after superhydrophobic fabric finishing agent is diluted with ethyl alcohol,
3 ~ 5min of re-ultrasonic dispersion.
The fabric is polyester, cotton, wool, silk, acrylic fibers, nylon, polyurethane and its blended fabric etc..Time of immersion and
Solidification temperature is according to fabric composition and weaving different from.
(3) super-hydrophobicity and estimation of stability
1, water droplet rolling angle measures
Test method: based on some substrate material surfaces (such as fabric) it is macroscopically very coarse, carry out contact angle test when be to be difficult
The profile of observed drop.And classical contact angle test method is highly dependent on the analysis of droplet profile.Therefore according to report
Method carries out surface wettability evaluation (Fig. 1) instead of the contact angle and roll angle of water with the rolling angle of water.The test of rolling angle
Method are as follows: sample is fixed on sample stage (Fig. 1 b), then is placed on the sloping platform of Contact-angle measurement system.Syringe is placed in
Above tilting table, fixed syringe needle to substrate distance is 10 mm, and a drop water is dripped to needle contact to substrate.Internal diameter is 110μM syringe needle is used to be added dropwise 10 ± 0.3μThe water droplet of L volume.Since the measurement of rolling angle tilting 50o.Drop is at least
It can be dripped on three ground of sample surfaces.If all drops can be flicked or be tumbled in sample surfaces, tilt angle just reduces by 2
O, same step repeat until a drop or much to drip drop cannot be tumbled from surface for until.All water droplets can be complete from surface
The minimum cant for tumbling or flicking is regarded as rolling angle.
Measurement result: rolling angle < 10 ° illustrate that obtained superhydrophobic fabric has excellent super-hydrophobicity (Fig. 2).
2, washing fastness
Test method: being added 32L water and 96g liquid detergent in washing machine, by sample in washing machine and other 10 piece 20 × 20
The cotton of cm washs ten circulations together at room temperature, and 45min is a circulation.After each wash cycle, cloth is spent
Ionized water washes clean tests its rolling angle after 60 DEG C of oven dryings.
Measurement result: after washing 20 times, rolling angle is still below 15 °, and water droplet is easily tumbled from surface, and ultra-hydrophobicity is excellent,
Illustrate that the made superhydrophobic fabric of the present invention has good washing fastness.
3, wearability
Test method: sample is fixed on after stainless steel column in moving back and forth on wear medium by tear strength of 10 kPa, 40
Cm is an abrasion cycles (Fig. 3).In order to simulate actual use situation as far as possible, wear test use respectively A4 paper, polyester cloth Ι and
2000 mesh sand paper are that wear medium is tested.After abrasion 10,50,100 and 200 times, its corresponding rolling angle is measured.
Test result: under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, and water droplet is easily tumbled from surface,
Ultra-hydrophobicity is excellent, illustrates that the made superhydrophobic fabric tool of the present invention has good wearability.
The present invention has the advantage that compared with the existing technology
1, the preparation method and simple process of superhydrophobic fabric finishing agent, reaction condition temperature is at low cost, is convenient for large-scale production;
2, the application method of superhydrophobic fabric finishing agent is simple, can be used for constructing for a variety of superhydrophobic fabrics, be not required to fabric into
Row pretreatment, greatlies simplify preparation process, and maintain the property such as the intrinsic mechanical strength of fabric, flexibility, gloss and feel
Energy;
3, the made superhydrophobic fabric of the present invention has excellent super-hydrophobicity and good mechanical stability.
Detailed description of the invention
Fig. 1 is the schematic device (a) and specimen holder (b) for measuring water rolling angle.
Fig. 2 is photo of the water droplet on superhydrophobic fabric.
Fig. 3 is the wear test schematic diagram for evaluating sample mechanical stability.
Specific embodiment
Make furtherly below by preparation and application of the specific embodiment to superhydrophobic fabric finishing agent of the present invention
It is bright.
Embodiment 1
(1) preparation of superhydrophobic fabric finishing agent: take 0.6mL phenyl triethoxysilane, 0.2mL tetraethoxysilane and
0.1mL 3- (2,3- the third oxygen of epoxy) propyl trimethoxy silicane, is added in 50mL ethanol-water solution (ethanol/water=7:1v/
V), magnetic agitation 10min obtains uniform solution;0.2mL ammonium hydroxide and 1mL polyphenylene silicone resin are added, is reacted at 50 DEG C
24h;It is cooled to room temperature, with 1M salt acid for adjusting pH to neutrality, obtains superhydrophobic fabric finishing agent.
(2) preparation of superhydrophobic fabric: measuring 10mL fabric finishing agent, dilutes 5 times, magnetic agitation 5min with ethyl alcohol, surpasses
Sound disperses 5min.Then 10cm × 10cm polyester textile is immersed, 0.3% acetic acid is added, is standing and soaking 5min, then will knit
Object handles 8min at 120 DEG C, and superhydrophobic fabric can be obtained.
Super-hydrophobicity and estimation of stability: rolling angle < 10 ° are carried out to superhydrophobic fabric;After washing 20 times, rolling angle is still low
In 15 °, water droplet is easily tumbled from surface;Under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, water droplet Yi Congbiao
Face tumbles, and has excellent super-hydrophobicity and mechanical stability.
Embodiment 2
(1) preparation of superhydrophobic fabric finishing agent: take 8mL hexadecyl, 2mL ethyl triethoxysilane and
5mL 3- (2,3- the third oxygen of epoxy) propyl trimethoxy silicane, is added to (ethyl alcohol/different in 400mL ethyl alcohol/isopropanol-water solutions
Propanol/water=6:3:1v/v/v), magnetic agitation 5min obtains uniform solution;Add 2mL ethylenediamine, 8mL poly dimethyl two
Methoxyl group silicone resin and the poly- methyl vinyl silicone of 2mL, in 25 DEG C of reaction 36h;With 1M salt acid for adjusting pH to neutrality, obtain
Superhydrophobic fabric finishing agent.
(2) preparation of superhydrophobic fabric: 100mL fabric finishing agent is measured, is diluted to 8 times of its volume with ethyl alcohol, magnetic force
Stir 5min, ultrasonic disperse 5min.Then 50cm × 50cm cotton fabric is immersed, 0.1% acetic acid is added, is standing and soaking
3min, then fabric is handled into 3min at 160 DEG C, superhydrophobic fabric can be obtained.
Super-hydrophobicity and estimation of stability: rolling angle < 10 ° are carried out to superhydrophobic fabric;After washing 20 times, rolling angle is still low
In 15 °, water droplet is easily tumbled from surface;Under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, water droplet Yi Congbiao
Face tumbles, and has excellent super-hydrophobicity and mechanical stability.
Embodiment 3
(1) preparation of superhydrophobic fabric finishing agent: by 20mL methyltriethoxysilane, 5 potassium methyl silicates and 12mL aminopropyl
Trimethoxy silane is added in 1L ethyl alcohol/Glycol Mixture (ethyl alcohol/glycol/water=2:2:1v/v/v), mechanical stirring
5min obtains uniform solution;10mL 1M sodium hydrate aqueous solution and 8mL poly dimethyl dimethoxy silicone resin are added,
40 DEG C of reaction 12h;With 1M salt acid for adjusting pH to neutrality, superhydrophobic fabric finishing agent is obtained.
(2) preparation of superhydrophobic fabric: 500mL fabric finishing agent is measured, with ethanol/water solution (ethanol/water=1:1v/v)
10 times, mechanical stirring 5min, ultrasonic disperse 5min of dilution.Then the wool of 50cm × 50cm, silk are immersed, are added
0.1% acetic acid is standing and soaking 4min, then fabric is handled 4min at 80 DEG C, and superhydrophobic fabric can be obtained.
Super-hydrophobicity and estimation of stability: rolling angle < 10 ° are carried out to superhydrophobic fabric;After washing 20 times, rolling angle is still low
In 15 °, water droplet is easily tumbled from surface;Under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, water droplet Yi Congbiao
Face tumbles, and has excellent super-hydrophobicity and mechanical stability.
Embodiment 4
(1) preparation of superhydrophobic fabric finishing agent: by 1mL vinyltriethoxysilane and 1mL dodecyl triethoxysilicane
Alkane is added in 100mL ethyl alcohol/Glycerine-Aqueous Solution (ethyl alcohol/glycerin/water=6.9:0.1:1), and magnetic agitation 5min obtains uniform
Solution;0.4mL triethylamine and the poly- methyl vinyl silicone of 3mL and 1mL polyphenylene silicone resin are added, is reacted at 70 DEG C
4h;With 1M salt acid for adjusting pH to neutrality, superhydrophobic fabric finishing agent is obtained.
(2) preparation of superhydrophobic fabric: measuring 80mL fabric finishing agent, dilutes 6 times, magnetic agitation 5min with ethyl alcohol, surpasses
Sound disperses 5min.Then 20cm × 20cm polyester/cotton blended cloth (20% cotton), acrylic fabric are immersed, 0.6% vinegar is added
Acid is standing and soaking 6min, then fabric is handled 5min at 120 DEG C, and superhydrophobic fabric can be obtained.
Super-hydrophobicity and estimation of stability: rolling angle < 10 ° are carried out to superhydrophobic fabric;After washing 20 times, rolling angle is still low
In 15 °, water droplet is easily tumbled from surface;Under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, water droplet Yi Congbiao
Face tumbles, and has excellent super-hydrophobicity and mechanical stability.
Embodiment 5
(1) preparation of superhydrophobic fabric finishing agent: by 1mL potassium methyl silicate, 4mL octadecyltriethoxy silane and 1mL ammonia
Propyl trimethoxy silicane is added in 5L ethyl alcohol/Glycol Mixture (ethanol/water=2:1:1), and magnetic agitation 5min is obtained
Uniform solution;10mL ammonium hydroxide and 80mL polydimethyl siloxanes and the poly- methyl vinyl silicone of 120mL are added, at 40 DEG C
React 8h;With 1M salt acid for adjusting pH to neutrality, superhydrophobic fabric finishing agent is obtained.
(2) preparation of superhydrophobic fabric: measuring 1L fabric finishing agent, dilutes 10 times, mechanical stirring 5min with ethyl alcohol, ultrasound
Disperse 5min.Then 100cm × 100cm cotton fabric is immersed, 0.2% acetic acid is added, is standing and soaking 3min, then by fabric
4min is handled at 120 DEG C, superhydrophobic fabric can be obtained.Super-hydrophobicity and estimation of stability are carried out to it.
Super-hydrophobicity and estimation of stability: rolling angle < 10 ° are carried out to superhydrophobic fabric;After washing 20 times, rolling angle is still low
In 15 °, water droplet is easily tumbled from surface;Under 10KPa load after reciprocating friction 200 times, rolling angle is still below 15 °, water droplet Yi Congbiao
Face tumbles, and has excellent super-hydrophobicity and mechanical stability.