30results about How to "Migration resistant" patented technology

The invention provides a preparation method of modified vinylene chloride plastics, which comprises the following steps: (1) weighing raw materials; (2) mixing prepared materials, namely adding polrvinyl chloride resin powder into a mixing mill, preheating, adding a plasticizer and a stabilizer, mixing to 85 to 90 DEG C, adding other aids, heating to 100 to 135 DEG C, and mixing at a high speed of 1,300r / min to obtain a mixed material; (3) performing extrusion forming, namely placing the mixed material in a double-screw extruder, initially melting, and plasticizing to obtain a completely plasticized material; and (4) granulating, air cooling, sieving, cooling and discharging products. In the method, the process is simple, the conditions are easy to control, and large-scale production is easy. In addition, the invention also provides modified vinylene chloride plastics, which have the characteristics of high wear resistance, high scraping resistance, high flame retardance, high ultraviolet resistance, soft handfeel, adhesion prevention, and the like, and can be used as coating materials for wires and cables.

The invention relates to a preparation method of a mercapto-alkene polymer flame-retardant system. Polysiloxane and a carbon nano tube belong to fire retardants, and have flame retardant property; according to the preparation method provided by the invention, the polysiloxane is grafted on the carbon nano tube through a chemical bond; the flame retardant properties of the polysiloxane and the carbon nano tube are put into a full play due to the synergistic effect generated between the polysiloxane and the carbon nano tube; meanwhile, ethylene on the polysiloxane is also formed in the polysiloxane-grafted carbon nano tube, and then can participate in copolymerization of mercapto-alkene, so as to form a flame-retardant system; the char-forming property and the flame-retardant property of the polymer can be improved by phenyl in the polysiloxane in a combustion process, so that the flame-retardant property of the flame-retardant system is further improved; the prepared flame-retardant system has the advantages of being stable in structure, migration-resistant, friendly to environment and harmless; the overall structure of the flame-retardant system can be regulated and controlled by adjusting the proportions of various reactants, so as to adjust the flame-retardant property of the product according to the requirements.

The invention discloses a TPU elastomer composition used for electric wires and cables and based on a dialkyl mono-thiophosphate composite flame-retardant system. The composition is prepared from, byweight, 65%-90% of TPU matrix material, 10%-30% of composite flame-retardant system and 0%-5% of additive, wherein the phosphorus sulfur nitrogen compound flame-retardant system contains dialkyl mono-thiophosphate and a carbon-forming component, the structural formula of the dialkyl mono-thiophosphate is shown as the following formula (I) or (II), in the formula, R1 and R2 are independently selected from linear alkyl or branched alkyl, M is selected from Mg, Ca, Al, Sb, Sn, Ge, Ti, Fe, Zr, Zn, Ce, Bi, Sr, Mn, Li, Na, K, H or NH4, and m is 1-4. The cable material prepared from the TPU elastomercomposition has the advantages of being free of molten drops, high in flame retardance, resistant to migration, abrasion and oil, soft and the like.

The invention belongs to the technical field of macromolecule materials, and discloses a transparent permanent antistatic PMMA material and a preparation method and application thereof. The material is prepared from, by weight, 50-110 parts of PMMA, 2-45 parts of an antistatic agent, 0-8 parts of a flexibilizer, 0-1 part of a stabilizer and 0.1-1 part of an antioxygen. The prepared transparent permanent antistatic PMMA material has the advantages that preparation is simple, forming and processing performance is good, and the material can be adopted for preparing dust-proof and antistatic workpieces or packing materials through processing forming modes of injection molding, curtain coating and the like.

The invention discloses a polyurethane-based black polymer dye, a preparation method and an application thereof. The temperature of the polymer polyol is raised to 90-110°C, the vacuum degree is ≤0.1MPa, the dehydration treatment is carried out for 1-2 hours, and nitrogen protection is introduced; the temperature is lowered. To 60-80°C, add isocyanate and catalyst to react at 60-90°C for 1-3 hours; then add small molecule black dye, solvent and catalyst, react at 60-90°C for 3-8 hours to prepare polyurethane with black dye Prepolymer; then add a chain extender, react at 50-90°C for 1-3 hours; finally remove the solvent in vacuum. The polyurethane-based black polymer dye prepared by the invention is to insert the small molecule black dye into the polyurethane chain, and the content of the small molecule black dye in the polyurethane chain can be adjusted as required, so as to realize the controllable amount of the dye. Adapt to different dyeing process requirements. It can be blended and matched with other dyes, and it is suitable for dyeing a variety of colors with a wide spectrum.

The invention discloses a halogen-free flame-retardant polyurethane resin without molten drops and water stain. The polyurethane resin comprises the raw materials by the weight percentage: 65-90% of apolyurethane matrix material, 5-20% of aluminum diethylphosphinate, and 1-15% of a carbon forming component; the carbon forming component is an insoluble infusible cross-linked polymer, and a crosslinking point structure is represented by the following formula (I). The invention discloses the halogen-free flame-retardant polyurethane resin without molten drops and water stain; the polyurethane resin material has the advantages of high flame retardancy, no molten drops, no water stain, migration resistance and the like, is used for preparation of halogen-free flame-retardant polyurethane leather, and is further applied to the fields of high-flame-retardancy requirements in furniture, transportation tool interior trim parts and the like.