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Preparation method of nano modified polyester material

A polyester material and nano-modification technology, which is applied in the field of preparation of nano-modified polyester materials, can solve the problems of poor flame retardancy, slow crystallization rate, and affecting the application of polyester materials, and achieve good processability, meltability, and good The effect of mechanical properties

Inactive Publication Date: 2018-09-28
许水仙
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention: the low crystallinity and slow crystallization rate of common polyester materials at present lead to a decrease in their tensile strength, which affects the application of polyester materials to a certain extent. In addition, polyester materials have poor flame retardancy and Poor heat resistance, can not meet the defects of market requirements, provides a preparation method of nano-modified polyester material

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] Weigh 56-64g montmorillonite into a kiln, and calcinate it at a temperature of 960-1000℃ for 35-45 minutes to obtain calcined montmorillonite. After cooling to room temperature naturally, the calcined montmorillonite and deionized water Mix and stir at a mass ratio of 1:3 for 12-15 minutes to obtain a suspension, and at a volume ratio of 5:1, mix and stir the suspension with a 21% sodium bicarbonate solution for 1 to 2 hours to obtain a reaction liquid; Hydrochloric acid with a concentration of 0.3mol / L adjusts the pH of the reaction solution to 6.2~6.6, after adjustment, it is poured into a centrifuge and centrifuged for 16~21min. The upper layer is separated and removed to obtain the lower layer of precipitated solid, and finally the lower layer of precipitated solid is put into the oven , Dry for 35-42min at a temperature of 86-92℃, grind for 12-15min and pass through a 100-mesh sieve after drying to obtain modified montmorillonite powder; according to the volume ratio...

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Abstract

The invention discloses a preparation method of a nano modified polyester material and belongs to the technical field of polyester material preparation. The preparation method comprises: activating montmorillonite, acidifying the activation resultant, performing sodication, grinding to obtain modified montmorillonite powder so that lamellar spacing is increased for the powder, allowing lamellar inorganic interlayers to bind base molecular bundles such that both motion of base chain segments and translation or rotation of molecular chains are hindered greatly, mixing sodium carbonate solution and zinc chloride solution to allow reacting, and calcining at a high temperature to obtain nano zinc oxide grains, and using stearic acid and anhydrous ethyl alcohol to surface-modify the nano zinc oxide grains such that the nano zinc oxide grains are dispersed evenly in a base with rarity of clustering; the surface of the nano zinc oxide grains is modified such that the nano zinc oxide grains andthe base experience chemical bonding and molecular entangling, the strength and rigidity of the base are improved, the tensile strength of the nano modified polyester material is further improved, and the nano modified polyester material is widely applicable.

Description

Technical field [0001] The invention discloses a preparation method of a nano modified polyester material, which belongs to the technical field of polyester material preparation. Background technique [0002] Polyester is a type of polymer containing ester functional groups in its main chain. Although there are many types of polyester, "polyester" usually refers to polyethylene terephthalate (PET). Polyesters include natural compounds, such as plant stratum corneum keratin, and synthetic fibers formed by gradual condensation, such as polycarbonate and polyethylene glycol. Natural polyesters and some synthetic polyesters are biodegradable, but most synthetic polyesters are not biodegradable. Polyesters can be divided into two categories: saturated polyesters and unsaturated polyesters. They are usually made by polycondensation of one or more polyacids and one or more polyols. Polyester includes polyester resin and polyester elastomer. Polyester resins include polyethylene tere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08K13/06C08K9/02C08K3/34C08K3/22C08K9/04C08K5/05C08K7/00C08K3/32C08K9/00
CPCC08K3/22C08K3/32C08K3/346C08K5/05C08K7/00C08K9/00C08K9/02C08K9/04C08K13/06C08K2003/329C08K2201/011C08L2201/02C08L2201/08C08L67/00
Inventor 许水仙赵必花朱彩娣
Owner 许水仙
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