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Talcum powder-polyester composite material and preparation method thereof

A technology of polyester composite material and talc powder, which is applied in the field of talc powder-polyester composite material and its preparation, can solve the problems of poor dimensional stability, low crystallization rate, and low thermal deformation temperature of PET, so as to improve thermal performance and improve Crystallization performance, effect of improving surface affinity

Active Publication Date: 2013-05-15
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET has a low heat distortion temperature, low crystallization rate, and poor dimensional stability, which limits its wide application in engineering plastics.

Method used

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  • Talcum powder-polyester composite material and preparation method thereof
  • Talcum powder-polyester composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take a solution prepared with 0.2g of coupling agent vinyltriethoxysilane, 5g of ethylene glycol, and 1g of water, adjust the pH value to 6 with oxalic acid, hydrolyze for 1 hour, and blend with 200g of talc powder passing through a 1250 mesh sieve for 5min. The talcum powder activated by the coupling agent is obtained for subsequent use. Take 41.9g of activated talcum powder, add PTA290g, EG129g, catalyst antimony acetate 0.13g, mix and stir. After pumping water until the water content is less than 1%, start to raise the temperature to 70°C to carry out the esterification reaction. After esterification at 220-240°C for 8 hours under normal pressure, add 0.01g of diisopropylamine as an additive, evacuate until the vacuum degree is below 80Pa, and polymerize at 240°C for 3 hours to obtain the desired PET / talc powder composites. The properties of the obtained composite materials are shown in Table 1.

Embodiment 2

[0025] Take 0.2g coupling agent N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 5g ethylene glycol, 1g water configuration solution, adjust the pH value to 6 with oxalic acid, hydrolyze for 1 hour, and 200g of talcum powder with a particle size of 10000 mesh was blended for 5 minutes to obtain talcum powder activated by a coupling agent, which was set aside. Take 16g of activated talcum powder, add PTA290g, EG129g, catalyst antimony acetate 0.13g, mix and stir. After pumping water until the water content is less than 1%, start to raise the temperature to 90°C to carry out the esterification reaction. After esterification at 220-240°C for 8 hours under normal pressure, add 0.01g of diisopropylamine as an additive, vacuumize until the vacuum degree is below 80Pa, and polymerize at 250°C for 3 hours to obtain the required PET / talcum powder composite material. The properties of the obtained composite materials are shown in Table 1.

Embodiment 3

[0034] Take 1g coupling agent N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane, 10g ethylene glycol, 0.1g water configuration solution, adjust the pH value to 6 with hydrochloric acid, hydrolyze for 1 hour, and 30g of talcum powder with a particle size of 3000 mesh was blended for 5 minutes to obtain activated talcum powder activated by a coupling agent, which was set aside. Take 0.27g of activated talcum powder, add PTA210g, EG60g, catalyst antimony acetate 0.01g, mix and stir. After pumping water until the water content is less than 1%, start to raise the temperature to 80°C to carry out the esterification reaction. After esterification at 220°C for 6 hours under normal pressure, add 0.01g of diisopropylamine as an additive, vacuumize until the vacuum degree is below 80Pa, and polymerize at 260°C for 3 hours to obtain the required PET / talc powder compound Material.

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Abstract

The invention relates to a talcum powder-polyester composite material and a preparation method thereof. The method comprises: (1) mixing 1 part by weight of a coupling agent, 10-100 parts by weight of glycol and 0.1-10 parts by weight of water, adjusting a pH value to 1-6 with acid, and hydrolyzing for 0-1 hour; (2) mixing the coupling agent hydrolysate and 30-1000 parts by weight of the talcum powder for 5 minutes to obtain the active talcum powder; and (3) mixing 0.1-10 parts by weight of the active talcum powder, 70-80 parts by weight of terephthalic acid and 20-30 parts by weight of the glycol with stirring, adding 0.01-1 part by weight of a catalyst, heating to 70-90 DEG C, dehydrating under vacuum until the water content is less than 1.0 %, re-heating to 220-240 DEG C, esterifying for 6-10 hours, adding 0.01-1 part by weight of an additive, vacuumizing to a vacuum degree of 80 Pa or less under a temperature of 240-260 DEG C, and polymerizing for 1-3 hours to obtain the product.

Description

technical field [0001] The invention relates to the field of polymer composite materials, in particular to a talcum powder-polyester composite material and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PET) is the most important variety of thermoplastic polyesters. It has good creep and fatigue resistance, high surface hardness, and similar mechanical properties to thermosetting plastics. It is widely used in fibers and films. However, PET has a low heat distortion temperature, low crystallization rate, and poor dimensional stability, which limit its wide application in engineering plastics. [0003] The main component of talc powder is hydrated magnesium silicate, which has a relatively stable lamellar structure and is an inorganic mineral material widely distributed in my country. Talc powder is widely used in the filling modification of plastics, which can improve the mechanical properties, heat resistance, barrier properties, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/183C08K13/06C08K9/06C08K3/34
Inventor 费彬
Owner HEFEI GENIUS NEW MATERIALS
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