184results about How to "Strong film forming" patented technology

The invention relates to a single-package moisture-curable composition. The composition comprises, on a basis of the dry weight of the composition, 10-99% of at least one silane-terminated polyurethane, and 1-90% of at least one silane-terminated polysiloxane, wherein at least one end group of the silane-terminated polyurethane polymer has a general formula of A-(CH2)m-SiR1n(OR2)3-n, A is an amine ester or urea connecting group, R1 is C1-12 alkyl, alkenyl, alkoxy, aminoalkyl, aromatic or (methyl) acrylic acid alkyloxy, R2 is a single substituted or non-substituted C1-18 alkyl or C6-C20 aromatic group, m is an integer of 1-60, and n is an integer of 0-1; the silane-terminated polysiloxane is polysiloxane with a hydrolyzable silane group, or a reaction product of at least one organic functionalized polysiloxane and at least one organic functionalized silane; after moisture curing of the composition, a surface with a water contact angle of more than 101 degrees can be formed. The composition is suitable for antifouling coatings, and can provide lower surface energy and better mechanical properties.

The invention belongs to the technical field of mulching films and particularly discloses a liquid-state mulching film and preparation and use methods thereof. The main technical scheme is as follows: the preparation and use methods comprise the steps of taking sludge, and adding a sterilizing agent prepared from water-dissolved trichloroisocyanuric acid, so as to deodorize and sterilize; then, adding humic acid raw powder, inorganic salts and water, mixing, stirring and homogenizing, then, grinding and reacting, so as to prepare a master batch formed by a paste body; taking polyacrylamide and derivatives thereof, lignosulfonate or / and cellulose derivatives, so as to form a sub-material with film forming, penetration, dispersion, chelation and water retention properties; during use, dissolving the sub-material by water, adding the dissolved sub-material into the master batch, stirring to prepare a porridge-like body, then, adding water, uniformly stirring and diluting, and spraying by a mist sprayer, thereby forming the mulching film. The liquid-state mulching film is prepared in a manner that the sludge serves as a main material, so that the problem of sludge treatment is basically solved, especially, the waste is changed into the valuable, and the land capability can be greatly increased; the liquid-state mulching film has the functions of increasing temperature, preserving soil moisture and promoting crop growth, the elimination of white pollution is realized, the flying dust factor of agriculture is controlled, the soil is improved, water resources are conserved, the revenue of farmers is increased, the expenditure of farmers is reduced, and the sustainable development of agriculture is promoted.