34results about How to "Remarkable effect of strengthening and toughening" patented technology

The invention discloses an oxidized graphene salt-based PVC (polyvinyl chloride) environment-friendly composite stabilizer which comprises the following components in parts by weight: 50-90 parts of a main stabilizer and 10-50 parts of an auxiliary stabilizer, wherein the main stabilizer is a compound of oxidized graphene salt and metal soap salt and can be prepared by reacting oxidized graphene with excessive inorganic base to obtain solid oxidized graphene salt and compounding the solid oxidized graphene salt with the metal soap salt or by reacting oxidized graphene with inorganic base with the excess amount of 20%-50% and adding fatty acid into a reaction solution to neutralize incompletely reacted inorganic base. The compound stabilizer has a good heat stabilization effect, is superior to most of PVC nontoxic compound stabilizers reported in literatures on the aspect of dynamic and static stabilization time, has better reinforcing and toughening effects on PVC resin, can be used for improving the tensile strength and the impact toughness of PVC, increasing the Young modulus of PVC and the like, and has the advantages of simple and convenient preparation method, cheap and easily accessible raw materials, environmental friendliness and the like.

The invention relates to a preparation method of polypropylene reinforced plasticized modifier, comprising the following steps: 1) performing the surface lipophilic treatment: selecting lipophilic additive and silicon dioxide wherein the weight of the lipophilic additive accounts for 0.5-2.5% of the weight of the silicon dioxide; preparing lipophilic additive isopropanol solution with concentration of 0.05-0.5mol / L and adding the solution into the silicon dioxide, uniformly mixing the mixture and heating the mixture for 2-4 hours at 50-60 DEG C to obtain the standby A component; 2) selecting polymer emulsion and the standby A component in ratio of 1:1; stirring the standby A component at room temperature and gradually adding the standby A component into the polymer emulsion and uniformly stirring and mixing the mixture; stopping stirring and spray drying the mixture to obtain the composite powder material and extruding and granulating the composite powder material to obtain the polypropylene reinforced plasticized modifier. The modifier can increase the intensity and toughness of the polypropylene and has no obvious effect on melt flow.

The invention relates to a water-based environmental protection coating and a preparation method thereof, belonging to the field of coatings. The water-based environment-friendly paint of the invention is prepared by using silicone-modified acrylic latex as the main component, together with inorganic fillers and other additives. Using alkylation-modified carbon nanotubes and nano-silica as inorganic fillers, the combined use of carbon nanotubes and nano-silica can form a synergistic reinforcement of points and lines, and a uniform coating can be formed when the coating is very thin. Smooth film Alkylation-modified carbon nanotubes and nano-silica can effectively avoid the agglomeration of fillers and effectively improve the dispersion of inorganic fillers in coating resins. The alkylation-modified filler also has the function of a defoamer, so the water-based environmental protection coating of the present invention does not need to add other defoamers. The water-based environmental protection paint prepared by the invention has excellent mechanical properties, adhesion, hydrophilicity and water resistance. The preparation method is simple and feasible, has good stability and repeatability, and is easy to realize industrialized production.