Summary of the invention
The PU silver finishing coat technique of a kind of camouflage color tent cloth of providing is provided technical problem to be solved by this invention, and technique is reasonable, and financial cost is low, and breathable moisture permeability is good, can make fabric panel have high color fastness to light function, high hydrostatic pressure resistance function.
For solving above-mentioned existing technical problem, the present invention adopts following scheme: a kind of PU silver finishing coat technique of camouflage color tent cloth, during coating, with polyurethanes silver slurry, base cloth is carried out to PU silver finishing coat, described polyurethanes silver slurry comprises mono-component polyurethane, aluminum paste, MEK, dimethyl formamide, and the weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:25 ~ 30:5 ~ 10.
As preferably, the preparation process of described polyurethanes silver slurry is: first a part of solvent is joined in aluminum paste, add polyurethane adhesive after stirring evenly again, add while stirring remaining solvent, adjust viscosity 5000 ~ 6000mPaS, standing 30min or vacuumizing and defoaming.
As preferably, the technological parameter while carrying out PU silver finishing coat is: select acute angle scraper, scraper angle is 110 ~ 125 degree, and magnetic roller magnetic force is 75 ~ 85%, and proparea oven temperature is 125 ~ 135 ℃, and back zone oven temperature is 145 ~ 155 ℃, and drying time is 30 ~ 40s.
As preferably, the technological parameter while carrying out PU silver finishing coat is: scraper angle is 110 degree, and magnetic roller magnetic force is 80%, and proparea oven temperature is 135 ℃, and back zone oven temperature is 150 ℃, and drying time is 35s.
As preferably, the weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:25:10.
As preferably, described aluminum paste is 320 order aluminum pastes.
As preferably, described base cloth is terylene OXFORD, and terylene OXFORD specification is 600 * 600D.
Beneficial effect:
The present invention adopts the PU silver finishing coat technique of a kind of camouflage color tent cloth that technique scheme provides, and technique is reasonable, and financial cost is low, and breathable moisture permeability is good, can make fabric panel have high color fastness to light function, high hydrostatic pressure resistance function.
The specific embodiment
Embodiment mono-:
A kind of PU silver finishing coat technique of camouflage color tent cloth, during coating, with polyurethanes silver slurry, base cloth is carried out to PU silver finishing coat, described polyurethanes silver slurry comprises mono-component polyurethane, aluminum paste, MEK, dimethyl formamide, and the weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:25 ~ 30:5 ~ 10.The weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:28:8.The preparation process of described polyurethanes silver slurry is: first a part of solvent is joined in aluminum paste, add polyurethane adhesive after stirring evenly again, add while stirring remaining solvent, adjust viscosity 5000 ~ 6000mPaS, standing 30min or vacuumizing and defoaming.Technological parameter while carrying out PU silver finishing coat is: select acute angle scraper, scraper angle is 110 ~ 125 degree, and magnetic roller magnetic force is 75 ~ 85%, and proparea oven temperature is 125 ~ 135 ℃, and back zone oven temperature is 145 ~ 155 ℃, and drying time is 30 ~ 40s.Technological parameter while carrying out PU silver finishing coat is: scraper angle is 110 degree, and magnetic roller magnetic force is 80%, and proparea oven temperature is 135 ℃, and back zone oven temperature is 150 ℃, and drying time is 35s.The weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:25:10.Described aluminum paste is 320 order aluminum pastes.Described base cloth is terylene OXFORD, and terylene OXFORD specification is 600 * 600D.
Embodiment bis-:
Be with the difference of embodiment mono-: the weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:25:5.The preparation process of described polyurethanes silver slurry is: first 2/5 solvent is joined in aluminum paste, add polyurethane adhesive after stirring evenly again, add while stirring remaining solvent, adjust viscosity 5000mPaS, standing 30min.Technological parameter while carrying out PU silver finishing coat is: select acute angle scraper, scraper angle is 110 degree, and magnetic roller magnetic force is 75%, and proparea oven temperature is 125 ℃, and back zone oven temperature is 145 ℃, and drying time is 30s.
Embodiment tri-:
Be with the difference of embodiment mono-: the weight ratio of described mono-component polyurethane, aluminum paste, MEK, dimethyl formamide is 50:10:30:10.The preparation process of described polyurethanes silver slurry is: first half solvent is joined in aluminum paste, add polyurethane adhesive after stirring evenly again, add while stirring remaining solvent, adjust viscosity 6000mPaS, vacuumizing and defoaming.Technological parameter while carrying out PU silver finishing coat is: select acute angle scraper, scraper angle is 125 degree, and magnetic roller magnetic force is 85%, and proparea oven temperature is 135 ℃, and back zone oven temperature is 155 ℃, and drying time is 40s.
The terylene OXFORD making by the present invention has good high hydrostatic pressure resistance function, quality is strong, wear-resisting, have good breathable moisture permeability, marching tent, rainwater-proof tarpaulin, top fabric, train tarpaulin etc. can be used to do, the industries such as electric power, oil field, railway, reinforcing bar, harbour, papermaking can be widely used in.Aluminum paste can be divided into the different cultivars such as 250 orders, 320 orders by granularity, and the present invention selects 320 orders, is the aluminum paste of flat, and the reflective that its outward appearance is flat is strong, is granular coating uniformity good; The covering power that order number is low is good, and gloss is strong.Plasticizer can be dibutyl phthalate (DOP), dioctyl phthalate (DBP) etc.Polyurethanes silver slurry adds solvent, as toluene, ethyl acetate, butanone and dimethyl formamide etc., can regulate the viscosity of polyurethanes silver slurry.The performance indications of the 600D OXFORD fabric of preparing through employing the present embodiment of recording of experiment are as follows: 6 grades of color fastness to light ﹥, 4.5 grades of water-fastness COLOR FASTNESS ﹥, resistance to hydrostatic pressure ﹥ 2000mmH2O, refuse water grade ﹥ 90 minutes.Wherein water-fastness COLOR FASTNESS is tested according to the standard testing of GB/T4744-1997 hydrostatic pressing according to GB/T8427 COLOR FASTNESS testing standard, resistance to hydrostatic pressure according to GB/T3921.3-1997 standard testing, color fastness to light; Spray rating is according to GB/T4745-1997 standard testing.
The present invention take the novel terylene camouflage OXFORD of 600D its preparation technology to be described as example, if prepare this type of coated fabric of other function, according to the requirement of fabric functional is selected to corresponding auxiliary agent.The product structure that adopts the present invention to prepare is reasonable, novel in design, and breathable moisture permeability is good, has high hydrostatic pressure resistance function, and technological process is simple, feasible, has significantly energy-conservation, conservation.