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Preparing method of norganic nanoparticle enhanced inflaming retarding polyurethane material

A technology of inorganic nanoparticles and polyurethane materials, which is applied in the field of new synthesis of high-performance materials, to achieve the effect of reducing impact, improving original performance and reducing release

Inactive Publication Date: 2015-07-15
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is possible to combine inorganic nano-flame retardants with traditional organic halogen-based and phosphorus-based flame retardants by using compound synergy technology, macromolecular technology, microcapsule technology, surface modification technology, grafting technology, and nanocomposite technology. It will have a better effect on polyurethane flame retardant, but how to play a synergistic effect faces different problems for different types of flame retardants

Method used

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  • Preparing method of norganic nanoparticle enhanced inflaming retarding polyurethane material
  • Preparing method of norganic nanoparticle enhanced inflaming retarding polyurethane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1 (taking nano-aluminum hydroxide particles as an example)

[0025] 1.1 Preparation of nanometer aluminum hydroxide particles

[0026] Weigh 92.71 grams of aluminum chloride and put it in a 500mL beaker, add an appropriate amount of double-distilled water into the beaker, and stir quickly until it dissolves. Prepare 10wt% dilute ammonia water, adjust the pH value of the solution, while adding 10wt% ammonia water dropwise, measure it with a pH meter until the pH is 6.5. Pour the solution with a pH value of 6.5 aluminum chloride into a hydrothermal kettle, put it into a muffle furnace, set the reaction temperature to 200° C., and the reaction time to be 8 hours. After the reaction, pour the reaction liquid into a centrifuge tube, perform high-speed centrifugation, and vacuum-dry to obtain nanometer aluminum hydroxide particles.

[0027] 1.2 Surface treatment of nanometer aluminum hydroxide particles

[0028] In order to increase the compatibility and dispers...

Embodiment 2

[0031] Embodiment 2 (taking nano-magnesium hydroxide particles as an example)

[0032] 1.1 Preparation of nano-magnesium hydroxide particles

[0033] Weigh 64.10 grams of magnesium nitrate Mg (NO 3 ) 2 ·6H 2 O was placed in a 500mL beaker, and an appropriate amount of twice-distilled water was added to the beaker, and stirred rapidly until dissolved. Prepare 1M sodium hydroxide, adjust the pH value of the solution, and measure it with a pH meter while adding sodium hydroxide dropwise until the pH is 7.0. Pour the solution with a pH value of 7.0 into a hydrothermal kettle, put it into a muffle furnace, set the reaction temperature at 180° C., and the reaction time for 10 hours. After the reaction is finished, the reaction solution is poured into a centrifuge tube, subjected to high-speed centrifugation, and vacuum-dried to obtain nanometer magnesium hydroxide particles.

[0034] 1.2 Surface treatment of nanometer magnesium hydroxide particles

[0035] In order to increase...

Embodiment 3

[0038] Example 3 (taking the composite of nano-aluminum hydroxide and magnesium hydroxide particles as an example)

[0039] Adopt the preparation and surface treatment method for nano-aluminum hydroxide, nano-magnesium hydroxide particle in embodiment 1 and embodiment 2; Proportional compound use, the preparation method of nano-reinforced flame-retardant polyurethane material is the same as that of Example 2, the mass ratio of intrinsic flame-retardant modified polyol (SU4110) and isocyanate monomer (PAPI) is 2:1, and the oxygen index of the obtained products is greater than 35, between 38-45.

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Abstract

The invention relates to a preparing method of inorganic nanoparticle enhanced inflaming retarding polyurethane material. First, a urea-formaldehyde microcapsule technology is used for carrying out surface treatment on inorganic nanoparticles, then polymerization monomer raw material inherently inflaming retarding modified polyatomic alcohol and isocyanate monomers are weighed, the weight ratio of the two components is 0.4-3.5:1, after mixing, catalysts, water and inorganic nanoparticle microcapsules are added, quick stirring is carried out until foaming is achieved, a product is placed in a drying oven for heat preservation reaction, and after reaction, nanoparticle enhanced inflaming retarding polyurethane materials are obtained. According to the method, the inflaming retarding performance of the inorganic nanoparticles is used, the specific surface area effect and the high-dispersion performance of the inorganic nanoparticles are used for adsorbing and capturing smoke generated when the materials are burned, the environment-friendly inflaming retarding effect of inflaming retarding, smoke lowering and low toxicity is achieved, and meanwhile synergistic interaction with traditional halogen and phosphorus based flame retardants is carried out for effect enhancing.

Description

technical field [0001] The invention relates to a method for preparing a nano-reinforced flame-retardant polyurethane material, which belongs to the technical field of novel synthesis of high-performance materials. Background technique [0002] As a new functional material, nanomaterials have attracted more and more attention. As a kind of nanomaterials, inorganic nanomaterials have a wide range of applications in the fields of biology, catalysis, separation, environmental protection, sewage treatment, etc. due to the small size effect, surface and interface effect, quantum size effect and macroscopic quantum tunneling effect of the particles. [0003] Polyurethane (PU) material is one of the six major synthetic materials in the world, because it has excellent physical and mechanical properties, electrical properties, acoustic properties and chemical corrosion resistance, and has strong adhesion to a variety of materials. Therefore, it is widely used as thermal insulation m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/42C08G18/28C08K9/10C08K3/22C08J9/08C08L75/04C08L75/06C08L75/08C08G101/00
CPCC08G18/28C08G18/42C08G18/48C08K3/22C08K3/2279C08K9/10C08K2003/2224C08K2003/2227C08K2003/2241C08K2003/2265C08K2201/011C08G2110/0083
Inventor 唐波张其坤康俊清赵雷振
Owner SHANDONG NORMAL UNIV