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88results about How to "Good heat resistance and flame retardant performance" patented technology

Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof

InactiveCN101875667ALower surface energyImprove hydrophobic and oleophobic propertiesSilicon organic compoundsChemistryOrganic solvent
The invention provides a preparation method of dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, which comprises the following steps: dripping each 1mol of dodecafluoroheptyl-propyl-trimethoxylsilane into 250-10000ml of organic solvent under the condition of 0-40 DEG C, carrying out hydrolysis condensation reaction under the action of acid catalysis, carrying out the reaction for a certain period of time, and carrying out concentration, filtration, drying and other steps for preparing dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane (dodecafluoroheptyl-propyl POSS) crystals. The invention further provides the dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane. The method has simple and easy process, low cost, high yield and high product purity, and the prepared dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane product has excellent hydro-oleophobic performances, heat resistance, flame retardance and low dielectric constant performance, and can be widely applied in the fields of polymer modification, hydro-oleophobic interface materials, flame retardants, low dielectric constant materials, building coatings, space materials, medical materials, light-emitting materials, liquid crystal materials and the like.
Owner:HOHAI UNIV

High-strength and corrosion-resistant modified polypropylene material

The invention discloses a high-strength and corrosion-resistant modified polypropylene material. The polypropylene material is prepared from the following raw materials: an abrasion-resistant modifiedpolypropylene base material, a nano silica and sisal fiber composite abrasion-resistant filler, ethylene-propylene-diene monomer dispersing liquid, a multi-walled carbon nanotube and montmorillonitecomposite reinforcing filler and PP flame-retardant masterbatch. During preparation, modified isotactic polypropylene is taken as the base material, after the base material is mixed with the compositeabrasion-resistant filler, the composite reinforcing filler and the PP flame-retardant masterbatch for filling modification, melt spinning is conducted, and thus a fiber mesh cloth matrix with good abrasion resistance, tensile strength, compressive strength, heat resistance and flame retardancy is obtained; and then on the basis that the polypropylene material obtained after infiltration treatment through the ethylene-propylene-diene monomer dispersing liquid and electret discharging keeps good impact resistance and mechanical properties, a woven bag woven by the polypropylene material has good properties of abrasion resistance, tensile strength, dust prevention and ultraviolet resistance, and the multifunctional development demands of the packaging bag are met.
Owner:温州晨光集团有限公司

Thermoplastic polyurethane optical film and coating method thereof

The invention provides a thermoplastic polyurethane optical film. The thermoplastic polyurethane optical film is obtained by mixing thermoplastic polyurethane (TPU) and polypropylene (PP) according toa mass ratio to obtain a basic material and preparing from acrylic monomers, coupling agents, initiators, fire retardants and auxiliary additives. The thermoplastic polyurethane optical film has hightransparency, excellent mechanical properties, high weather and chemical resistance, high-and-low temperature resistance and good bonding properties, and can be melted, flowable, transparent, and extremely-low initially viscous under a certain temperature, thereby being capable of serving as an optical coating rubber material for touch display screens; touch display screen components bonded by the thermoplastic polyurethane optical film have the advantages of simplicity and convenience in process, convenience in bubble elimination, easiness in rework, high production efficiency, low cost andthe like, and touch display screen components coated with the thermoplastic polyurethane optical film have the advantages of good optical performance, excellent mechanical property, high chemical andweather resistance and good environmental performance, so that the thermoplastic polyurethane optical film is an excellent optical rubber material.
Owner:SHENZHEN GAOREN ELECTRONICS NEW MATERIAL

Preparation method of flame-resistant polypropylene board

The invention belongs to the field of polypropylene board, and more specifically relates to a preparation method of a flame-resistant polypropylene board. The preparation method comprises following steps: 1, an organosilicon raw material is added into toluene, room temperature stirring is carried out until complete dissolving is realized so as to obtain a toluene solution; 2, distilled water is added into a constant pressure dropping funnel, and is added into the toluene solution dropwise slowly, uniform stirring is carried out, and an obtained product is allowed to stand for 2 to 5h so as toobtain an acidic hydrolysate; 3, ammonia gas is introduced into the acidic hydrolysate until the pH value of the hydrolysate is 7, an alumina silicate catalyst, co-polypropylene powder, and homo-polypropylene powder are added for uniform stirring so as to obtain a suspending liquid; and 4, the suspending liquid is subjected to gradient heating reaction, and is subjected to pressurization and cooling moulding so as to obtain the flame-resistant polypropylene board. The preparation method is capable of solving problems in the prior art that conventional polypropylene boards are poor in toughness, low temperature resistance, aging resistance, and flame resistance, and are high in moulding shrinkage rate; combined modification of organic silicone resin and alumina silicate is capable of improving the entire flame resistance and heat resistance.
Owner:江苏宏佳华新材料科技有限公司

Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane and preparation method thereof

The invention provides a preparation method of dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, which comprises the following steps: dripping each 1mol of dodecafluoroheptyl-propyl-trimethoxylsilane into 250-10000ml of organic solvent under the condition of 0-40 DEG C, carrying out hydrolysis condensation reaction under the action of acid catalysis, carrying out the reaction for a certain period of time, and carrying out concentration, filtration, drying and other steps for preparing dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane (dodecafluoroheptyl-propyl POSS)crystals. The invention further provides the dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane. The method has simple and easy process, low cost, high yield and high product purity, and the prepared dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane product has excellent hydro-oleophobic performances, heat resistance, flame retardance and low dielectric constant performance, and can be widely applied in the fields of polymer modification, hydro-oleophobic interface materials, flame retardants, low dielectric constant materials, building coatings, space materials, medical materials, light-emitting materials, liquid crystal materials and the like.
Owner:HOHAI UNIV
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