Composite polyurethane elastomer/montmorillonoid nano-material and its prepn process

A technology of polyurethane elastomer and nanocomposite materials, which is applied in the preparation of the above composite materials and the field of nanocomposite materials filled with montmorillonite polyurethane elastomers, can solve the problems of increasing cost and environmental pollution, and achieve improved performance and good interface adhesion. The effect of knot properties

Inactive Publication Date: 2003-02-26
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that it is easier to obtain exfoliated nanocomposites, thereby greatly improving the mechanical properties of the material, but it also has its limitations. The selected raw materials must have good compatibili

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 32 grams of montmorillonite with a cation exchange capacity of 115 meq / 100 g was added to 2000 ml of deionized water at 80° C., and stirred for 1 hour. Add 6ml of concentrated hydrochloric acid and 12g of octadecylamine into 1000ml of deionized water at 80°C, and emulsify with an emulsifier for 3 minutes. This emulsion was then added to the above dispersion of montmorillonite and stirred for 20 minutes. Filter the precipitate with a filter cloth, wash with deionized water at 80°C several times, check the filtrate with 0.1% silver nitrate solution until it is free of chloride ions, and dry it. 30 grams of above-mentioned cation-exchanged montmorillonite and 30 grams of maleic anhydride grafted polypropylene (1) (maleic anhydride content: 4.55 wt %) were melt-mixed in an internal mixer for 15 minutes, and the mixing temperature was 200° C. The rotational speed is 100rpm. The obtained product was crushed with a universal pulverizer, and vacuum-dried at 80° C. for 12 hour...

Embodiment 2

[0017] The organic modification of montmorillonite and its mixing process with maleic anhydride grafted polypropylene (2) (maleic anhydride content: 9.1wt%) is the same as in Example 1. The obtained maleic anhydride-grafted polypropylene (2) / montmorillonite=1 / 1 mixture was pulverized with a universal pulverizer, and vacuum-dried at 80° C. for 12 hours. Take 6 grams of the powder, 54 grams of polyurethane elastomer and 0.25 grams of functional antioxidant 1010 and melt and mix them in an internal mixer for 15 minutes at a mixing temperature of 200° C. and a rotation speed of 100 rpm. The tensile elastic modulus of the obtained composite material is 23.2MPa, the tensile strength is 14.6MPa, and the elongation at break is 810%.

Embodiment 3

[0019] 24 grams of montmorillonite with a cation exchange capacity of 150 meq / 100 g was added to 1500 ml of deionized water at 80° C., and stirred for 1 hour. Add 4.5ml of concentrated hydrochloric acid and 9g of octadecylamine into 750ml of deionized water at 80°C, and emulsify with an emulsifier for 3 minutes. This emulsion was then added to the above dispersion of montmorillonite and stirred for 20 minutes. Filter the precipitate with a filter cloth, wash it with 80°C deionized water several times, check the filtrate with 0.1% silver nitrate solution until it is free of chloride ions, and dry it. 20 grams of the cation-exchanged montmorillonite and 40 grams of maleic anhydride-grafted polypropylene (1) were melt-mixed in an internal mixer for 15 minutes at a mixing temperature of 200° C. and a rotational speed of 100 rpm. The obtained product was crushed with a universal pulverizer, and vacuum-dried at 80° C. for 12 hours. Take 14.4 grams of the powder, 45.6 grams of poly...

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Abstract

The present invention a nanometer polyurethane elastomer/montmorillonite composite material and its preparation process. The nanometer polyurethane elastomer/montmorillonite composite material consists of polyurethane elastomer, bulking agent, organic montmorillonite and functional antiaging agent. The preparation process includes after cationic exchange reaction of montmorillonite, melting insertion of bulking agent, and bulking polyurethane elastomer and organic montmorillonite by means of the bulking agent. The material has montmorillonite dispersed homogeneously in the polymer and obviously higher mechanical performance than pure polyurethane elastomer.

Description

technical field [0001] The invention relates to a polyurethane elastomer / montmorillonite nano composite material, in particular to a nano composite material filled with montmorillonite polyurethane elastomer. [0002] The present invention also relates to a method for preparing the above-mentioned composite material. Background technique [0003] Using a small amount of one-dimensional nano-sized layered inorganic components to modify the polymer can significantly improve the rigidity and strength of the polymer, while the specific gravity and transparency of the material are basically unchanged compared with the polymer, and can also greatly improve the polymerization. Thermal stability, flame retardancy and barrier properties of materials. Many polymers can form nanocomposites with layered silicates, such as nylon 6, epoxy resin, polystyrene, polyester, polypropylene, nitrile rubber, styrene-butadiene rubber, silicone rubber, etc. [0004] Polyurethane is a multifunction...

Claims

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Application Information

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IPC IPC(8): C08K3/34C08L75/04
Inventor 唐涛窦立岩赵忠夫黄葆同
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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