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A kind of flame-retardant polystyrene resin and its preparation method and application

A technology of polystyrene resin and flame-retardant type, which is applied in the field of flame-retardant polystyrene resin and its preparation, and can solve the problems of unsatisfactory flame-retardant effect

Active Publication Date: 2021-05-25
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned existing technologies all use conventional compounding to prepare polystyrene resins with flame-retardant effects, and the flame-retardant effects that can really be achieved are not ideal.

Method used

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  • A kind of flame-retardant polystyrene resin and its preparation method and application
  • A kind of flame-retardant polystyrene resin and its preparation method and application
  • A kind of flame-retardant polystyrene resin and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0046] The preparation of preparation example 1 melamine resin prepolymer

[0047] Add 20 mL of deionized water into the three-necked flask equipped with a reflux condensing device, add 10 g of melamine and 25 mL of formaldehyde with a mass concentration of 37% into the three-necked flask, stir and mix evenly, adjust the pH of the system to 8.0 with triethanolamine, and heat up to 70 ℃, stir at 200r / min until the mixed solution is completely transparent, keep it warm for 30 minutes, and cool down to room temperature to prepare a transparent and viscous melamine resin prepolymer solution for later use.

preparation example 2

[0048] Preparation Example 2 Preparation of Surface Modified Microencapsulated Flame Retardant

[0049] S1: Stir and disperse 10g of magnesium hydroxide (MH) and 5g of aluminum hydroxide (ATH) into 10g of bis(2-ethylhexyl) phosphate, stir thoroughly for 3-5min until the dispersion is uniform, and then add polyborosilicate Oxygen 10g and triphenyl phosphate (TPP) 5g, stir rapidly for about 1min to form a mixed flame retardant system;

[0050] S2: Slowly add 15-25 g of the melamine resin prepolymer obtained in Preparation Example 1 dropwise to the mixed flame retardant system prepared in step S1, stir rapidly, adjust the pH of the system to 5.4, raise the temperature to 80° C., and keep it warm for 2 hours;

[0051] S3: Stop stirring, adjust the pH of the system to 7.0, slowly lower to room temperature, filter, wash with deionized water for 3 times, and dry in a 30°C drying oven for 4 hours to obtain a microencapsulated flame retardant;

[0052] S4: Put 10mL of hexamethyldisila...

preparation example 3

[0053] Preparation Example 3 Preparation of Surface Modified Graphite

[0054] Ultrasonic disperse 5 g of graphite with a particle size of 5 μm into absolute ethanol, add 10 g of 3-acryloyloxypropyltrimethoxysilane, stir to dissolve completely, heat the system to 60°C and react overnight, remove the supernatant by centrifugation, and use Wash with distilled water three times, and dry in a 35°C drying oven for 12 hours to obtain surface-modified graphite.

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Abstract

The invention discloses a flame-retardant polystyrene resin. The polystyrene resin comprises the following preparation raw materials in parts by mass: 100 parts of styrene monomer, 1-12 parts of a surface-modified microencapsulated flame retardant, 1-4 parts of surface-modified graphite, 0.1-2 parts of initiator, 100-200 parts of deionized water, 0.2-2 parts of water-based auxiliary materials, the water-based auxiliary materials include 0.5-1.5 parts of dispersant and 0.1-0.5 parts of emulsifier. The polystyrene resin prepared by the invention has good flame retardancy. In addition, the present invention discloses a flame-retardant polystyrene foam material. During the preparation of polystyrene resin particles, a foaming agent is added to obtain polystyrene pre-expanded particles, and the pre-expanded particles are pre-expanded to obtain polystyrene Styrene foam material, said foam material has good thermal insulation performance.

Description

technical field [0001] The invention belongs to the technical field of polymer flame-retardant materials, and in particular relates to a flame-retardant polystyrene resin and its preparation method and application. Background technique [0002] Polystyrene (Polystyrene, abbreviated as PS) is a thermoplastic, which is odorless, colorless, non-toxic and transparent particles, with excellent mechanical properties, heat insulation properties, electrical insulation, dimensional stability, processing fluidity and With the advantages of chemical corrosion resistance, it is widely used in various industries such as construction, instrumentation, home appliances, pharmaceuticals, electronics, automobiles, furniture, daily necessities and packaging. Polystyrene includes general-purpose polystyrene, high-impact polystyrene, and expandable polystyrene (EPS). [0003] Although polystyrene has many excellent properties and is widely used in production and life, polystyrene is easy to bur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F112/08C08F2/18C08F2/44C08K9/06C08K9/10C08K3/22C08K5/521C08K5/523C08K3/04C08L25/06C08J9/20C08J9/228
CPCC08F2/18C08F2/44C08F112/08C08J9/20C08J9/228C08J2325/06C08K3/04C08K3/22C08K5/521C08K5/523C08K9/06C08K9/10C08K2003/2224C08K2003/2227
Inventor 李向梅杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY