4 results about "Stearoyl chloride" patented technology

The invention relates to the technical field of polyvinyl chloride materials, and discloses a lead and arsenic-free polyvinyl chloride sheath cable material and a preparation method thereof. The polyvinyl chloride sheathed cable material comprises the following raw material components in parts by weight: 100 parts of polyvinyl chloride resin powder, 40-45 parts of a plasticizer, 5-7 parts of a stabilizer, 10-15 parts of calcium carbonate, 10-15 parts of aluminum hydroxide, 2-4 parts of magnesium hydroxide, 0.5-2 parts of an anti-dripping agent and 0.2-1 part of a synergist, the stabilizer is folic acid modified Ca-Mg-Al-LDH (layered double hydroxide). The plasticizer is composed of dioctyl terephthalate and stearoyl chloride modified red phosphorus microcapsules. The prepared polyvinyl chloride sheathed cable material has good flame retardance and heat aging resistance.

The invention discloses a low-temperature-resistant food packaging composite bag and a preparation method thereof, and relates to the technical field of plastics. The packaging film comprises a base material layer, a barrier layer and a heat sealing layer which are arranged in sequence. Wherein the base material layer is a biaxially oriented polypropylene film; the barrier layer is an ethylene-vinyl alcohol copolymer film; the heat sealing layer is prepared from the following raw materials in parts by mass: 100 to 150 parts of low-density polyethylene particles, 1.5 to 2 parts of synergist, 0.1 to 0.2 part of antioxidant 1010, 0.5 to 1 part of calcium stearate, 15 to 20 parts of polyolefin elastomer and 2 to 5 parts of modified nano calcium carbonate; the synergist is prepared from stearoyl chloride, triethylamine and epsilon-polylysine; the modified nano calcium carbonate is prepared from nano calcium carbonate and stearic acid. Due to the introduction of the synergist and the modified nano calcium carbonate, the elongation at break, the tensile strength, the barrier capacity, the low temperature resistance and the antibacterial property of the food packaging bag are effectively improved. Therefore, the method has a wider application prospect.

The application provides a preparation method and application of modified nano-starch coating super-hydrophobic paper, and belongs to the technical field of papermaking. The method comprises the following steps: nano-starch preparation, nano-starch modification and super-hydrophobic paper preparation. First, starch dispersion paste is gelatinized, and nano-starch is precipitated by using anhydrous ethanol to form a nano-starch colloidal suspension. Hydrophobic modification of the nano-starch is realized by using triethylamine as a catalyst, ethyl acetate as a solvent and stearoyl chloride as a modifier. Then, the modified starch ethanol dispersion is sprayed onto the surface of paper, and super-hydrophobic paper is obtained after solidification. The super-hydrophobic paper prepared by the application is a full bio-based material, is biodegradable, green and environmentally friendly, non-toxic, simple in process flow, low in cost, wide in application range, and has the performances of oil-water separation, self-cleaning and excellent dye compatibility.

The invention discloses a preparation method of a nano-scale compatibilizer for a PE-based wood-plastic composite material, which comprises the following steps: by taking cellulose as a modification object, stearoyl chloride containing acyl chloride groups with long carbon chains and high reaction activity as a modification monomer, and ionic liquid such as 1-allyl-3-methylimidazole chloride and the like as a solvent and a reaction medium, carrying out homogeneous reaction to obtain the nano-scale compatibilizer for the PE-based wood-plastic composite material. Stearoyl chloride modified cellulose with different substitution degrees is prepared; the stearoyl chloride esterified nano-crystalline cellulose is prepared from stearoyl chloride esterified nano-crystalline cellulose, then regeneration conditions are controlled, the functionalized nano-crystalline cellulose is obtained, the prepared stearoyl chloride esterified nano-crystalline cellulose can be used as a compatibilizer of a PE / wood flour composite material (WPC), the melt flowability of the WPC and the interfacial compatibility and mechanical properties among all components of the WPC are remarkably improved, and the effect is superior to that of a traditional compatibilizer.