Flame retardation cladding adhesive for polystyrene prefoamed beads, and product thereof

A technology of polystyrene and pre-foaming, which is applied in the field of modified polystyrene flame-retardant foam boards, can solve the problems of reducing cohesive energy, reducing the degree of crosslinking, and reducing production efficiency, and achieves excellent flame-retardant properties, Effect of improving flame retardancy

Inactive Publication Date: 2015-12-23
吴福胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, there are many problems in the modified polystyrene flame retardant foam material produced by the above-mentioned technology: as reported in US3590014, due to the lack of adhesive, the flame retardant film coated on the surface of polystyrene beads will inevitably Block the chemical or physical bonding between adjacent surfaces, thereby reducing the cohesive strength of modified polystyrene foam; although polyvinyl acetate is used as an adhesive to improve the cohesive strength of foam products according to CN1906236A reports, but due to polyvinyl acetate The flammability and easy hydrolysis of vinyl acetate itself reduce the flame retardancy and water resistance of polystyrene foam; and as reported in CN102414265A, compound adhesive with polyurethane and polyvinyl acetate, then further reduce the improvement. According to CN103172970A described using phenolic resin as adhesive, although the flame retardancy of phenolic resin itself is conducive to impr

Method used

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  • Flame retardation cladding adhesive for polystyrene prefoamed beads, and product thereof
  • Flame retardation cladding adhesive for polystyrene prefoamed beads, and product thereof
  • Flame retardation cladding adhesive for polystyrene prefoamed beads, and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Synthesis of modified urea-formaldehyde resin characterized by toughening and film-forming properties

[0041] First add 100 kg of formaldehyde (37%) to the reaction kettle, use 30% sodium hydroxide solution to adjust the pH value of the formaldehyde solution to 8-8.5, then add 18.5 kg of urea (industrial grade), 11 kg of melamine (industrial one grade), 1.2 kg of polyvinyl alcohol, 3 kg of diethanolamine and 5.5 kg of resorcinol, start stirring and heat up to 85°C, and keep the temperature for 35 minutes. Then add 30% acetic acid solution, adjust the pH value of the reaction solution to about 5-6, then add 17 kg of urea, keep at 80°C to continue the reaction for 15-25 minutes, when the reaction solution appears fog point, immediately use 30% hydrogen The sodium oxide solution makes the pH of the reaction solution reach 7-7.5 to terminate the polycondensation reaction. Add 1.8 kilograms of urea, 5 kilograms of polyvinyl acetate emulsion (solid content of 50% ...

Embodiment 2

[0044] Embodiment 2 Preparation of modified flame retardant coating glue

[0045] In a 200L cylinder, add 60 kilograms of modified urea-aldehyde resins characterized by toughening and film-forming properties obtained in Example 1, then add 0.6 kilograms of BYK-W909 and 3 kilograms of dodecyl Sodium sulfonate, then add 0.18 kg of KH-550 and stir at a high speed of 800-1000r / m for 3 minutes. Then, under stirring, slowly add 19 kg of ammonium polyphosphate, 5 kg of zinc borate, 5 kg of calcium carbonate powder, 3.5 kg of fly ash, 0.5 kg of bentonite and 2,32 kg of iron oxide red. Then use a high-speed disperser to disperse at a high speed of 1000-1500r / m for 15 minutes. Finally, add 1.8kg of a mixture of ammonium chloride and phosphoric acid (1:1 by weight) and stir for 2 minutes at a speed of 800-1000r / m to obtain a uniform and fine iron-red flame-retardant coating glue with a solid content of 82-83%, the viscosity (25°C) is 2000-3000mPa.s.

Embodiment 4

[0049] Embodiment 4 Wet coating of modified flame retardant glue 2

[0050] Add 3.6M 3 (about 53.4 kilograms) of polystyrene pre-expanded beads (diameter is 3-4mm), slowly and evenly add 104 kilograms of modified flame-retardant coating glues made by embodiment 2 under stirring state, continuously stir 10 minutes ,stand-by.

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PUM

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Abstract

The invention provides a flame retardation cladding adhesive for polystyrene prefoamed beads, and a product thereof, and concretely relates to a flame retardation cladding adhesive specially used for cladding polystyrene prefoamed beads, and a modified polystyrene flame retardation foam sheet made by using the flame retardation cladding adhesive. The polystyrene prefoamed bead flame retardation cladding adhesive adopting modified urea formaldehyde resin with toughening and film forming performances as an adhesion medium has excellent flame retardation characteristic, and can effectively improve the flame retardation performance of a polystyrene foam material; and the modified urea formaldehyde resin with toughening and film forming performances adopted in the invention allows a weak acidic substance to be used as a curing agent of the flame retardation cladding adhesive, so damages of a strong acid curing agent similar to phenolic resin to human bodies, environment and apparatuses are avoided.

Description

technical field [0001] The patent of the present invention has invented a flame-retardant coating glue specially used for coating polystyrene pre-expanded beads and a modified polystyrene flame-retardant foam board made of this flame-retardant coating glue. Background technique [0002] Polystyrene foam material has a closed-cell honeycomb structure. It is this closed-cell structure that makes polystyrene insulation boards have excellent properties such as light weight, insulation, heat insulation, shock resistance, and sound insulation. They are widely used in construction, light industry, shipping and other fields. However, with the improvement of national requirements on the fire performance of building insulation materials, traditional polystyrene insulation boards have been difficult to meet the requirements of laws and regulations. Therefore, improving the fire performance of traditional polystyrene insulation materials and preparing flame-retardant polystyrene insula...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08K13/02C08K5/42C08K3/32C08K3/38C08K3/26C08K3/34C08K3/22C08J9/22C08L25/06
Inventor 郁维铭吴福胜朱涛涛潘德斌董燕
Owner 吴福胜
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