Halogen-free flame retardant PES (Polyether Sulfone) natural color hot melt adhesive and preparation method thereof

A hot-melt adhesive and natural color technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of poor thermal stability of flame retardants, severe melting drops, poor aging performance, etc. Good film-forming properties, good processability, and high flame-retardant efficiency

Inactive Publication Date: 2011-11-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Halogen-free flame-retardant polyester hot-melt adhesive products reported in China are generally flame-retardant treated by adding an inorganic flame-retardant system. migration, moisture absorption
In order to improve the flame retardant effect, a certain amount of red phosphorus flame retardant is generally added, which is unfavorable to the color, processing and film forming properties, and affects normal use.
Only South Korea and Japan have a small amount of halogen-free flame-retardant hot-melt adhesives produced in foreign countries. The film-forming performance is good, but the aging performance is poor and the price is expensive. Melt demand

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1) Mix 90g of ammonium polyphosphate, 30g of pentaerythritol, 30g of melamine and 5g of 4A molecular sieve evenly, and then mix with 350g of PES hot melt adhesive to obtain a mixture;

[0019] 2) extruding and granulating the mixed material obtained in step 1) through twin-screw extrusion, and then injection molding through an injection molding machine to obtain a halogen-free flame-retardant PES natural color hot-melt adhesive;

[0020] The twin-screw extrusion temperature is 128°C, 130°C, 135°C, 140°C, 135°C, 130°C from the hopper to the machine head; the injection temperature of the injection molding machine is 140°C, 145°C, 150°C, 145°C, 140°C.

[0021] According to GB / T 2046.2-2009, the limiting oxygen index (LOI) of the halogen-free flame-retardant PES natural hot melt adhesive prepared by the above method is 31.3% with an oxygen index meter; according to UL94ISBN 0-7629-0082-2, the The combustion grade is characterized by a vertical combustion meter, and the vert...

Embodiment 2

[0023] 1) Mix 90g of ammonium polyphosphate, 30g of pentaerythritol, 30g of melamine and 10g of 4A molecular sieve evenly, and then mix with 350g of PES hot melt adhesive to obtain a mixture;

[0024] 2) extruding and granulating the mixed material obtained in step 1) through twin-screw extrusion, and then injection molding through an injection molding machine to obtain a halogen-free flame-retardant PES natural color hot-melt adhesive;

[0025] The twin-screw extrusion temperature is 128°C, 130°C, 135°C, 140°C, 135°C, 130°C from the hopper to the machine head; the injection temperature of the injection molding machine is 140°C, 145°C, 150°C, 145°C, 140°C.

[0026] According to GB / T 2046.2-2009, the limiting oxygen index (LOI) of the halogen-free flame-retardant PES natural hot melt adhesive prepared by the above method is 34.5% with an oxygen index meter; according to UL94ISBN 0-7629-0082-2, with a level The vertical combustion meter indicates its combustion level, and the UL...

Embodiment 3

[0028] 1) Mix 90g of ammonium polyphosphate, 30g of pentaerythritol, 30g of melamine and 15g of 4A molecular sieve evenly, and then mix with 350g of PES hot melt adhesive to obtain a mixture;

[0029] 2) extruding and granulating the mixed material obtained in step 1) through twin-screw extrusion, and then injection molding through an injection molding machine to obtain a halogen-free flame-retardant PES natural color hot-melt adhesive;

[0030] The twin-screw extrusion temperature is 128°C, 130°C, 135°C, 140°C, 135°C, 130°C from the hopper to the machine head; the injection temperature of the injection molding machine is 140°C, 145°C, 150°C, 145°C, 140°C.

[0031] According to GB / T 2046.2-2009, the limiting oxygen index (LOI) of the halogen-free flame-retardant PES natural hot melt adhesive prepared by the above method is 35.1% with an oxygen index meter; according to UL94ISBN 0-7629-0082-2, with a level The vertical combustion meter indicates its combustion level, and the UL...

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Abstract

The invention relates to a halogen-free flame retardant PES (Polyether Sulfone) natural color hot melt adhesive and a preparation method thereof, belonging to the technical field of environment friendliness of flame retardant hot melt adhesives. The preparation method comprises the following steps of: with a PES hot melt adhesive as matrix resin, with an intumescent flame retardant system consisting of ammonium polyphosphate, pentaerythritol and melamine as an intumescent flame retardant as well as with a 4A molecular sieve as a synergist, uniformly mixing the intumescent flame retardant with the synergist and then uniformly mixing with the PES hot melt adhesive to obtain a mixed material; extruding and granulating the mixed material by using twin screws; and carrying out injection molding and forming by using an injection molding machine to obtain the halogen-free flame retardant PES natural color hot melt adhesive. The halogen-free flame retardant PES natural color hot melt adhesive prepared by the preparation method disclosed by the invention has the advantages of high flame retardant efficiency, low smoke generation amount, few drops, favorable compatibility and favorable processing performance and forming performance of the adhesive film; and the halogen-free flame retardant PES natural color hot melt adhesive is suitable for fields of fire safety protection and preparation of conducting fabric as a shielding material for electronic apparatuses, clothing industry, traffic communication, and the like.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant PES natural color hot-melt adhesive and a preparation method thereof, belonging to the technical field of flame-retardant hot-melt adhesive environmental protection. Background technique [0002] Hot melt adhesive is solid at room temperature, and can be applied to the adherend after melting at low temperature. After pressing and cooling, the bonding process can be completed in a short time. Due to the outstanding advantages of environmental protection, safety, rapid curing and suitable for automatic production, hot melt adhesives have developed rapidly in the past ten years. Worldwide, hot melt adhesives have become the third largest variety with the fastest growth and the most development potential after polymer emulsions and traditional solvent-based adhesives. [0003] Copolyester (referred to as PES) hot melt adhesive is a kind of polyester hot melt adhesive, which is widely used in the fie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J167/02C09J11/04C09J11/06
Inventor 杜建新郝建薇张明明杨荣杰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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