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Flame-retardant and environment-friendly PBT/micrometer calcium carbonate composite material and preparation method thereof

A technology of micron calcium carbonate and composite materials, which is applied in the field of flame-retardant and environmentally friendly PBT/micron calcium carbonate composite materials and its preparation, can solve the problems of poor flame retardancy, low notched impact strength, and insufficient toughness of pure PBT materials, and achieve environmental protection Flame retardant performance, improved rigidity, and excellent overall performance

Inactive Publication Date: 2014-04-09
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor flame retardancy, low notched impact strength, high brittleness and insufficient toughness of pure PBT materials, the application of PBT as a polymer structural material in some fields is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A flame-retardant and environment-friendly PBT / micron calcium carbonate composite material, its components are proportioned by mass percentage: PBT 65%, micron calcium carbonate 15%, phosphonate flame retardant 18%, calcium stearate 0.3%, The compound of primary antioxidant 1010 and auxiliary antioxidant 168 is 0.5%, polysiloxane 1%, and colorant 0.2%. Among them, the intrinsic viscosity of PBT is 0.85-1.2dl / g, and the average particle size of micron calcium carbonate The diameter is between 1 and 10 μm.

[0020] Preparation method: (1) Weigh the micron calcium carbonate and calcium stearate according to the weight ratio, add it into an ultrasonic vibration generator or a high-speed mixer, and stir at 100°C-120°C for 20-100 minutes to make the hard Calcium fatty acid and micron calcium carbonate are uniformly dispersed, and then cooled to below 40°C to discharge as a reserve; (2) Dry PBT at 120°C-130°C for 4-6 hours, and control the moisture content below 0.03%. Standb...

Embodiment 2

[0022] A flame-retardant and environment-friendly PBT / micron calcium carbonate composite material, its components are proportioned by mass percentage: PBT 50%, micron calcium carbonate 25%, phosphate ester flame retardant 22%, silane coupling agent 0.5%, main The compound of antioxidant 1010 and auxiliary antioxidant 168 is 1%, TAS-2A 1.2%, and colorant 0.3%, among which, the intrinsic viscosity of PBT is 0.85-1.2dl / g, and the average particle size of micron calcium carbonate is Between 1 and 10 μm.

[0023] Preparation method: (1) Weigh the micron calcium carbonate and silane coupling agent according to the weight ratio, add it into an ultrasonic oscillator or a high-speed mixer, and stir at 100°C to 120°C for 20 to 100 minutes to make the silane Coupling agent and micron calcium carbonate are uniformly dispersed, then cooled to below 40°C and discharged, as the expected preparation; (2) PBT is dried at 120°C-130°C for 4-6 hours, and the moisture content is controlled below 0...

Embodiment 3

[0025] A flame-retardant and environment-friendly PBT / micron calcium carbonate composite material, the components of which are: 75% PBT, 5% micron calcium carbonate, 18% organophosphate flame retardant, 0.1% calcium stearate, 0.6% of the compound of primary antioxidant 1010 and auxiliary antioxidant 168, 1% of ethylene bisstearamide, and 0.3% of colorant, among which, the intrinsic viscosity of PBT is 0.85-1.2dl / g, and the density of micron calcium carbonate The average particle size is between 1 and 10 μm.

[0026] Preparation method: (1) Weigh micron calcium carbonate and calcium stearate according to the weight ratio, add it into an ultrasonic oscillator or high-speed mixer, and stir at 100°C-120°C for 20-100 minutes to make the hard Calcium fatty acid and micron calcium carbonate are evenly dispersed, and then cooled to below 40°C to discharge as a reserve; (2) Dry PBT at 120°C-130°C for 4-6 hours, and control the moisture content below 0.03%. Standby; (3) Weigh the compo...

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Abstract

The invention discloses a flame-retardant and environment-friendly PBT / micrometer calcium carbonate composite material. The flame-retardant and environment-friendly PBT / micrometer calcium carbonate composite material comprises the components by mass: 50%-80% of PBT, 5%-25% of micrometer calcium, 18%-25% of a halogen-free flame retardant, 0.1%-0.5% of a surface treating agent, 0.1%-1% of an antioxidant, 0.2%-1.5% of a solvent and 0-0.5% of a color material. The flame-retardant and environment-friendly PBT / micrometer calcium carbonate composite material has the beneficial effects that by blending the micrometer calcium carbonate with PBT and adding a proper amount of the halogen-free flame retardant and the surface treating agent, rigidity, heat resistance and stability of the material can be greatly increased and the material has the characteristics of toughening, reinforcing and keeping relatively good strength; the halogen-free flame retardant has smoke-suppressing, non-toxic and environment-friendly high flame-retardant performance; and the composite material has excellent comprehensive performances, high strength and good processibility. A preparation method provided by the invention is simple and convenient for operations and can realize industrialization easily.

Description

technical field [0001] The invention relates to a polymer material, in particular to a flame-retardant and environment-friendly PBT / micron calcium carbonate composite material and a preparation method thereof. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin. Some application examples of PBT in the industry have shown its irreplaceable superiority in some aspects, and it has become the successor to polyamide (PA), polycarbonate (PC), polyoxymethylene (POM) and modified polyphenylene ether. (MPPO) after the fifth largest general-purpose engineering plastics, and has been widely used in many fields. However, due to the poor flame retardancy, low notched impact strength, high brittleness and insufficient toughness of pure PBT materials, the application of PBT as a polymer structural material in some fields is limited. Contents of the invention [0003] The object of the present invention is to provide a flame-r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K9/04C08K3/26B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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