42results about How to "Little impact on physical and mechanical properties" patented technology

The invention relates to a synthesis method of flexible-foam flame-retardant polyether polyol, aiming at providing the synthesis method of the flexible-foam flame-retardant polyether polyol with good flame retardance, safety, no toxicity and low cost. The synthesis method comprises the following steps of: adopting a melamine-formaldehyde condensation compound and a polyol compound as a mixed initiator; firstly under the action of amine, carrying out polymerization with olefin oxide and obtaining high-hydroxyl-value polyether; and then under the action of alkali metal catalyst, adding the olefin oxide again for further polymerization and obtaining the flexible-foam flame-retardant polyether polyol. In the synthesis method, the preparation process is simple, the cost is low and the influence on the physical and mechanical performances is less. The flexible-foam flame-retardant polyether polyol prepared by the method is light in color and low in viscosity and can be widely used for preparing the flame-retardant flexible polyurethane foam. A prepared flame-retardant flexible polyurethane foam plastic product has the advantages of high oxygen index, good flame-retardant effect, high heat resistance, good size stability and high strength.

The invention discloses a flame-retardant and wear-resistant corrugated box, which comprises a box body composed of corrugated cardboards. The cardboards are surface paper, corrugated paper and inner paper from the outside to the inside, and the three are bonded by oxidized starch, wherein the oxidized starch is added Vapor-phase corrosion inhibitor, and coating fire-resistant wear-resisting paint on surface paper and inner paper surface, this coating is prepared from following raw materials by weight: 30-40 parts of phenolic resin, nanometer Sb2O3-Al (OH) 310-15 parts, 10-20 parts of nano wear-resistant powder, 1-3 parts of reactive diluent, 0.5-2 parts of defoamer, 2-5 parts of penetrating agent, 0.5-1 part of antioxidant, 10-20 parts of organic solvent, 10 parts of curing agent ‑20 servings. In the present invention, the phenolic resin modified by cashew nut shell oil or melamine is applied to the surface of the carton, which has strong wear resistance and mechanical properties. Nano-aluminum hydroxide is used as a flame retardant to reduce the dosage and improve the flame retardancy.

The present invention discloses a finishing method for raising heat-insulating and flame-proofing performance of organic fibre fabrics. Said method is characterized by forming a continuous protective film made of sheet hydroxide on the surface of organic fibre or fabrics so as to raise flame-proofing and heat-insulating performance of organic fibre fabrics.

The invention provides a flame retardant composition for chloroprene rubber and a preparation method thereof, wherein the flame retardant composition comprises antimony trioxide, magnesium borate, zinc aluminate and magnesium carbonate; in parts by weight, The flame retardant composition comprises 10-30 parts of antimony trioxide, 20-50 parts of magnesium borate, 10-40 parts of zinc aluminate and 10-30 parts of magnesium carbonate. With this flame retardant composition, there is no need to add brominated flame retardants (such as decabromodiphenyl ether, decabromodiphenylethane, etc.), halogenated flame retardants (chlorinated paraffin, chlorine, etc.) to the neoprene rubber. Polyethylene), metal hydroxides and zinc borate and other flame retardants. Moreover, the flame retardant composition has the advantages of less dosage and high flame retardant efficiency.

The invention discloses a high-toughness flame-retardant polypropylene material and a preparation method thereof. The preparation method comprises the following steps of: preparing modified isotacticpolypropylene with good impact toughness, flame retardancy and heat resistance by using isotactic polyethylene fibers, hexahydroxymethylaminotristritrientriene, and temperature-resistant toughening filler, obtaining a compact fiber net with good adhesive force, compatibility, ultraviolet ray resistance and flame retardancy through the melt spinning of the modified isotactic polypropylene, a sisalfiber composite light stabilizer loaded with FeTiO3 / titanium dioxide, and an adhesion promoter, carrying out infiltration and hot pressing on the compact fiber net in an ester-soluble chlorinated polypropylene resin solution, and discharging to obtain the polypropylene material. On the basis of maintaining the good toughness and flame retardance, the dust removal and sterilization efficiency of the obtained polypropylene material is greatly improved; and an automobile lining prepared by the polypropylene material is not easy to crack and wrinkle under the condition of long-term illumination and rain.

The invention discloses a compound type uvioresistant antibacterial agent and a preparation method thereof. The preparation method for the compound type uvioresistant antibacterial agent comprises the following steps of: firstly, coarsening talc powder by adopting fluohydric acid; secondly, sensitizing the talc powder after coarsening; and finally, performing silver deposition reaction on the talc powder after sensitizing. Metallic state silver of which the weight is 5 to 10 percent of that of the talc powder and the thickness is 50 to 100 nanometers is deposited and coated on the surface of the talc powder. By using the ultraviolet shielding, absorbing and bacteriostatic functions of nano-state metallic silver, the preparation method prepares the compound type uvioresistant antibacterialagent which simultaneous has uvioresistant and antibacterial functions by depositing the nano silver on the surface of the talc powder. The compound type uvioresistant antibacterial agent has the advantages of simplicity, practicability, high uvioresistant antibacterial efficiency, wide application range, large-scale production and the like. The compound type uvioresistant antibacterial agent provided by the invention can be widely applied to the industries of textiles, plastics, coatings and the like, and has good economical and social benefits.

The invention relates to a flame retardant soft foam polyether polyol and a synthesis method thereof. The technical scheme is to provide the flame retardant soft foam polyether polyol which is good in flame retardant property, safe and non-toxic, simple in preparation process and low in cost and the synthesis method of the flame retardant soft foam polyether polyol. The synthesis method disclosed by the invention comprises the following steps of enabling melamine-formaldehyde condensation compound to react with amine compounds, polymerizing the reaction product with an acid compound to obtain a polyether initiator, further polymerizing the polyether initiator with oxyalkylene with the action of a base metal catalyst so as to obtain the flame retardant polyether polyol. The flame retardant polyether polyol synthesized by the method has the advantages of light colour, low viscosity and good material flowability, and can be widely used for preparing the flame retardant polyether soft foam. The flame retardant soft polyether foam plastic products foamed and prepared by the flame retardant polyether polyol disclosed by the invention have the characteristics of good flame retardant effect, high oxygen index, good foam uniformity, good size stability and high mechanical strength.

The invention discloses a phosphorus-silicon composite flame retardant as well as a preparation method and application thereof. The phosphorus-silicon composite flame retardant is a cage-like tetraphenyl trisilicate phosphorus silsesquioxane shown in the description, and the flame retardant is prepared according to the following steps: firstly hydrolyzing POSS to chipping POSS under the action of an organic alkali, and then carrying out reaction of the chipping POSS with metaphosphoric acid. Experiments show that the phosphorus-silicon composite flame retardant provided by the invention gives full play to the advantages of a silicon flame retardant and a phosphorus flame retardant, compensates defects of the silicon flame retardant and the phosphorus flame retardant, has significant synergistic flame retardance and complementarity, and excellent thermal insulation, smoke suppression and oxygen supply cutoff functions, also has the functions of protecting the environment, safety and preventing molten drop, can be directly used for preparing silicone rubber, can not only improve the flame retardance of the silicone rubber, but also perfect the thermal insulation, smoke suppression and mechanical properties of the silicone rubber, and the phosphorus-silicon composite flame retardant has the advantages of being low in preparation and application costs, easy to realize large-scale industrialized production, and the like.