Fabric finishing agent and fabric finishing method
Technical field
The present invention relates to a kind of finishing agent of functional fabric, relate in particular to a kind of fabric finishing agent, and this finishing agent is used for the method for textile finishing, fabric has after arrangement lasting to be refused water, refuses oil and anti-pollution function.
Background technology
Water, oil are fabrics such as garment material common pollutants in daily life and work of people, particularly at the employed fabric of some particular surroundings, and the easier contamination that is subjected to water, oil.This has just proposed new performance requirement to textiles.And refuse water, refuse the contamination that oil and antifouling textile product can prevent oiliness pollutant and aqueous stain, and the textiles after arrangement changes the style of original textiles hardly, do not produce fabric damage and spot.And at occurring in nature, the structural property of super-hydrophobicity plant has caused their self-purification capacity, and this ability is claimed " lotus leaf effect ".In the research of chemical simulation living things system, super hydrophobic surface is one of relatively more active in recent years field.
It is with a long history that the fabric water, oil and soil repellent is put in order, and China is just existing water repellent finish product when Wei, Shanxi, the Six Dynasties.Nineteen fifty, U.S. DuPont (Du Pont) company takes the lead in refusing water, refusing oil and anti-soil agent as fabric with the polytetrafluoroethylene (PTFE) emulsion, and has applied for patent.Minnesota Mining and Manufacturing Company successfully synthesizes fluorine-containing alkyl acrylate copolymer subsequently, is used for the arrangement of fabric water, oil and soil repellent.The competition in market makes and refuses water, refuses oil and anti-soil agent becomes better and approaching perfection day by day.These fluorochemical repellent water, refuse oil and anti-fouling agent is main active component with PFO sulfonyl compound (PFOS); existing water repellency has the oil repellent energy again; and do not influence the original style of fiber, in a very long time, all be acknowledged as and top qualityly refuse water, refuse oil and anti-soil agent.Show according to investigation, research and develop successfully less than six months, just captured almost whole relevant market at fluorine-containing water and oil repellant anti-soil agent.
Along with the development of society and the enhancing of human environmental consciousness, particularly when ozone layer is subjected to showing great attention to of the mankind, to the also raising gradually of environmental requirement of water, oil and soil repellent finishing agent.Fluorine allows the people worry the destruction of ozone layer and the toxicity of itself to user's harm.2002 OECD (EU Economy Cooperacao e Desenvolvimento) initiated an assessment of risks, this assessment report is classified PFOS as a kind of PBT material (difficult decompose the material that can accumulate in vivo).Experimental results demonstrate that PFOS has hepatotoxicity, neurotoxicity, Cardiovascular Toxicity, genotoxicity, immunotoxicity, genetoxic and carcinogenic etc., and have persistence and height cumulative bad in vivo.Organism is taken in PFOS and can be distributed in blood and the liver, because its stability is strong, thereby is difficult to decompose by the metabolism of biology.Subsequently, U.S. environment food and agricultural sector (DEFRA) have also carried out the assessment of PBT to PFOS, and the conclusion that draws with OECD is consistent.European Parliament passed through to the bill of limiting the quantity of of PFOS, and to require each member state to include them state's laws of various countries in to the sale of PFOS and the proposal of use on October 25th, 2006.At present, U.S. EPA has proposed PFOAstewardship plan (PFOA independently cuts down plan), promptly reduces 95%, 2015 year to PFOA discharging in 2010 and reduces 100%, i.e. zero-emission.
The ecological problem of fluorine-containing water and oil repellant anti-soil agent has caused the upsurge to ecological water, oil and soil repellent arrangement research.Botanist Barthlott of Univ Bonn Germany and Neinhuis find that in the research of lotus leaf being refused the self-cleaning function of water this function is because the mastoid process and the surperficial wax of the micro nano structure of lotus leaf rough surface cause jointly.And with lotus leaf surface because nanoparticle structure arranged, and can make water, oil form smooth little ball on the surface, and the effect of not stain is referred to as " lotus leaf effect ", along with the rapid emergence of nanosecond science and technology, also make " lotus leaf effect " to become the direction of a hot topic in the water, oil and soil repellent arrangement research.
Give with the back finishing technique that weaving face fabric is functional a ubiquitous problem and be: the persistent problem of function, promptly functional fabric water-fast wash, wear-resisting problem.If can not anchor at nano material on the lining effectively, in dress or washing process, nano material just might take off from lining, make functional can not be lasting, simultaneously in the wandering and environment of nano material, easily cause environmental pollution.So give weaving face fabric functional while with the back finishing technique, keep the persistent problem of its original physical and mechanical properties and function, be that can this technology widely used key issue.
Summary of the invention
An object of the present invention is to provide a kind of fabric finishing agent, solve common fabric behind functional treatment, gas permeability descends, its functional unendurable problem.
Another object of the present invention provides a kind of fabric finishing method, improves fabric and has and refuse water, refuse oil and antifouling ability, simplifies preparation process, enlarges the scope of application.
A kind of fabric finishing agent of the present invention mainly comprises the 0.5-5wt% nano-TiO
2, 2-10wt% adhesive DS-5125 (polyacrylate, Guangdong Demei Fine Chemical Co., Ltd. provides) and 2-10wt% softener JM-801 (hydrophilic silicon oil finishing agent, Zhejiang Jiamin Plastic Co provides).
Preferred fabric finishing agent mainly comprises the 1.5wt% nano-TiO
2, 5wt% adhesive DS-5125 and 5wt% softener JM-801.For guaranteeing nano-TiO
2Good dispersion can add an amount of dispersant.
At first put into required nano-TiO in the unscrambled containers
2, add an amount of absolute ethyl alcohol then and (make its submergence nano-TiO
2Powder), magnetic agitation 30min, ultrasonic again dispersion 30min then adds adhesive DS-5125, softener JM-801 respectively successively, adds the required water yield again, adds a spot of dispersant simultaneously, is stirred well to form uniform nano-TiO
2Colloid obtains fabric finishing agent of the present invention.
Former cloth of the present invention is cotton embryo cloth or conventional reactive dyeing cotton.
A kind of fabric finishing method of the present invention, its preparation method is as follows:
I. refuse water, refuse oil and soil resistant finish: former cloth floods 30min at 70 ℃ in the fabric finishing agent of pH value 4.5-5.5, and former cloth and dressing liquid bath raio are 1: 30;
II. pad: normal temperature pads, pick-up rate 60-80%;
III. secondary is refused water, is refused oil and soil resistant finish: in 70 ℃, flood 30min in the fabric finishing agent of pH value 4.5-5.5;
IV. secondary pads: normal temperature pads, pick-up rate 60-80%;
V. preliminary drying: 100-120 ℃, 15-60min;
VI. cure: 150-200 ℃, 1-10min.
Fabric after fabric finishing agent arrangement of the present invention, its contact angle is more than 150 °, and refusing the water grade is more than the level Four, and it is good to refuse oil and antifouling property.
The beneficial effect that the present invention realizes:
A kind of fabric finishing agent of the present invention utilizes nano-TiO
2Property, based on " lotus leaf effect ", with the imitative Nanosurface of the imitated textiles of the mastoid process of lotus leaf micro nano structure, finely disseminated nano-TiO
2Equably attached to fabric face, make textiles have the structure of similar lotus leaf surface at random, reach and refuse water, refuse oil and anti-fouling functions.And, by the use of adhesive DS-5125 and softener JM-801, fabric after the arrangement had lasting refuse water, refuse oil and anti-pollution function, wear-resisting, water-fast washing, and have physical and mechanical propertiess such as good brute force, gas permeability.Solved common fabric behind functional treatment, gas permeability descends, its functional unendurable problem.
Finishing agent used in the present invention is a solvent with water all, and process is pollution-free, and finishing agent is reusable, helps realizing cleaning producing and environmental protection.
A kind of fabric finishing method of the present invention improves fabric and has and refuse water, refuse oil and antifouling ability, simplifies preparation process, enlarges the scope of application.The clothes of preparation or bedding etc. not only have the function of water, oil and soil repellent, and physical and mechanical properties such as brute force descends less.
The specific embodiment
Below describe technical scheme of the present invention in detail.Only for the explanation concrete grammar, the scale of this method is not subjected to the restriction of embodiment to the embodiment of the invention.
The embodiment pure cotton fabric
The base cloth specification: Gram Mass is 150.3g/m
2Through the weft yarn raw material is 25Tex * 28Tex cotton yarn; Through filling density is 360.5 * 228/10 centimetres; Former cloth is 2/1 drillipg through reactive dyeing.
The processing technology step is as follows:
(1) water, oil and soil repellent dressing liquid prescription:
Nano-TiO
2Content 1.5wt% (dressing liquid)
Adhesive DS-5125 content 5wt% (dressing liquid)
Softener JM-801 content 5wt% (dressing liquid)
Take by weighing cloth specimen earlier, calculate dressing liquid weight at 1: 30 with bath raio, according to nano-TiO
2Content, adhesive DS-5125 content, softener JM-801 content are prepared each composition.
At first put into required nano-TiO in the unscrambled containers
2, add an amount of absolute ethyl alcohol then and (make its submergence nano-TiO
2Powder), magnetic agitation 20min, ultrasonic again dispersion 20min then adds adhesive DS-5125, softener JM-801 respectively successively, adds the required water yield again, adds a spot of dispersant simultaneously, is stirred well to form uniform nano-TiO
2Colloid obtains dressing liquid.The arrangement process is as follows:
I. water, oil and soil repellent dressing liquid arrangement: former cloth is cotton embryo cloth or conventional reactive dyeing cotton, 70 ℃ of dipping 30min, dressing liquid pH value 4.5-5.5.
II. roll: normal temperature pads, pick-up rate 60-80%.
III. secondary water, oil and soil repellent dressing liquid arrangement: 70 ℃ of dipping 30min, dressing liquid pH value 4.5-5.5.
IV. secondary pads: normal temperature pads, pick-up rate 60-80%.
V. preliminary drying: 110 ℃, 30min.
VI. cure: 170 ℃, 4min.
The performance of the fabric after the fabric finishing agent arrangement sees Table 1
Table 1 refuses water, refuse the pure cotton fabric performance after oil and the antifouling processing