Phosphorus-contained flame-retarding nano-class ethanediol polyterephthalate/laminated silicate composition and its preparing process and application

A technology of ethylene glycol phthalate and nano-composite materials, which is applied in the field of phosphorus-containing flame-retardant polymer/inorganic salt nano-composite materials and its preparation, and can solve problems such as difficult flame retardancy and reduced heat release rate

Inactive Publication Date: 2003-02-12
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In addition, there have been reports at home and abroad on the flame retardancy of polymer / layered silicate composites
Gilman et al. reported their research results in SMPE Journal, 1997, 33 (4): 40, and found that the heat release rate of MMT nanocomposites such as PA6, PS (polystyrene) and polycaprolactone was significantly reduced, but to reach It is very difficult to meet the practical requirements of flame retardancy (such as oxygen index LOI ≥ 29)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] First, add 44 grams of montmorillonite with a total amount of cation exchange of 90meq / 100g into 1100 grams of dispersion medium water and stir at high speed to form a stable suspension; then add 16.16 grams of octadecyltrimethylammonium chloride Add, heat up to 70°C and stir well, then filter the sediment in the lower layer, wash it with water 2 to 3 times, fully centrifuge and dry it; then add 3032.81 grams of dimethyl terephthalate (DMT) and 1367.19 grams of ethylene glycol In the (EG) monomer, stir and mix well again, raise the temperature to 160-230°C for 2.5-4 hours of transesterification reaction; then add 183.33 grams of reactive phosphorus-containing flame retardant hydroxyphenoxyphosphine acrylic acid, catalyst antimony trioxide 1.375g, mix evenly, heat up to 245-275°C and evacuate to below 60Pa, polymerize for 2-3 hours, and the obtained phosphorus-containing flame-retardant polyethylene terephthalate / layered silicate nanocomposite material The performance is...

Embodiment 2

[0026] The preparation method of the present embodiment is the same as that of Embodiment 1, omitted. The difference is: ① the amount of layered silicate added is 110 grams; ② the layered silicate is mecca stone with a total cation exchange amount of 80meq / 100g; ③ the catalyst is antimony acetate. The properties of the composite material obtained in this embodiment are shown in the attached table.

Embodiment 3

[0028] First, add 220 grams of montmorillonite with a total amount of cation exchange of 90meq / 100g into 5500 grams of dispersion medium water and stir at high speed to form a stable suspension; then add 80.8 grams of intercalation agent octadecyltrimethylammonium chloride Add, heat up to 75°C and stir well, then filter the lower sediment, wash with water 2 to 3 times, fully centrifuge and dry; then add 2958.50 grams of terephthalic acid (PTA) and 1441.50 grams of ethylene glycol (EG) and 180.38 grams of phosphorus-containing flame retardant hydroxyphenoxyphosphine propylene, fully stirred and mixed again, and raised the temperature to 160-230 ° C for 1.5-3 hours of transesterification reaction; then added 1.3742 grams of catalyst antimony trioxide and mixed evenly, heated Heat to 245-275°C and vacuum below 60Pa, polymerize for 2-3 hours to obtain phosphorus-containing flame-retardant polyethylene terephthalate / layered silicate nanocomposite material, and its properties are shown...

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Abstract

A P-contained flame-retarding ethanediol polyterephthalate/laminar silicate composition is prepared from dimethyl terephthalate (or terephthalic acid), ethanediol, laminar silicate, P-contained flame retardant, intercalator, dispersing medium and catalyst. Its advantages are high mechanical properties and refractory nature, and simple preparing process.

Description

1. Technical field [0001] The invention belongs to the technical field of phosphorus-containing flame-retardant polymer / inorganic salt nanocomposite material and its preparation method and application, and specifically relates to a phosphorus-containing flame-retardant polyethylene terephthalate / layered silicate nanocomposite material And its preparation method and use. 2. Background technology [0002] Polyethylene terephthalate (referred to as polyester), because of its high modulus, high strength, high elasticity, shape retention and heat resistance, is the largest and most widely used variety of synthetic fibers . Because the product is combustible, its application in special industry work clothes such as aviation, railway and other transportation industries, hotels, restaurants, public entertainment places and fire protection is limited to a certain extent. [0003] Since the 1970s, the research and application development of flame-retardant polyester fibers in variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/5313C08L67/03
Inventor 王玉忠吴博彭登轩郭莉杜晓华王德义赵弘葛欣国
Owner SICHUAN UNIV
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