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PBT environment-friendly and flame-retardant material toughened and reinforced by blending elastomer and micrometer particles

A technology of micron particles and flame retardant materials is applied in the field of elastomer and micron particles blending and toughening to enhance PBT environmental protection flame retardant materials. The effect of rigidity and heat resistance, high notched impact strength and excellent comprehensive 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

[0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin, which has been widely used in electronic appliances, home appliances, automobile industry and other industries, but due to its low notched impact strength, high brittleness, Insufficient toughness, low flame retardancy and other shortcomings limit its application as a polymer structural material in certain fields
In the prior art, the use of elastomer toughening can greatly improve the impact resistance of PBT, but at the same time it also causes a serious decline in its strength, stiffness, heat resistance and processing performance, and the cost is also high; when using rigid particles to toughen at a certain It shows simultaneous toughening and strengthening under the same conditions, but the improvement of toughness is limited
The flame retardant modification of PBT usually uses a halogen flame retardant. Although the flame retardant effect of the flame retardant is very good, it produces toxic substances such as dioxin and furan during the flame retardant process, which cannot meet the requirements of health and environmental protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An elastomer and micro-particle blending toughening reinforced PBT environment-friendly flame retardant material, its components are proportioned by mass percentage: PBT 60%, phosphonate flame retardant 18%, ethylene-octene copolymer elastomer 10% , micron calcium carbonate 10%, stearic acid 0.3%, polysiloxane 0.6%, primary antioxidant 1076 and auxiliary antioxidant 168 compound 0.8%, benzotriazole light stabilizer 0.3%, of which, The average particle size of micron calcium carbonate is between 1 μm and 10 μm.

[0023] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh the micron calcium carbonate and stearic acid according to the weight ratio , put it into an ultrasonic vibration generator or a high-speed mixer of not less than 3000 rpm, stir at a temperature of 80°C to 120°C for 10 to 60 minutes to disperse evenly, and then cool to below 40°C to obtain surface-treated Micron calcium carb...

Embodiment 2

[0025] A kind of elastomer and micron particle blending toughening reinforced PBT environment-friendly flame retardant material, its components are proportioned by mass percentage: PBT 50%, phosphate ester flame retardant 18%, acrylonitrile-butadiene-styrene copolymer Elastomer 15%, micron calcium carbonate 15%, calcium stearate 0.4%, ethylene bis stearamide 1%, primary antioxidant 1076 and auxiliary antioxidant 168 compound 0.4%, benzophenone light Stabilizer 0.2%, wherein the average particle size of micron calcium carbonate is between 1 μm and 10 μm.

[0026] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh the micron calcium carbonate and calcium stearate according to the weight ratio Finally, add it to an ultrasonic oscillator or a high-speed mixer with a speed of not less than 3000 rpm, stir at a temperature of 80°C to 120°C for 10 to 60 minutes to disperse evenly, and then cool to below 4...

Embodiment 3

[0028] A kind of elastomer and micron particle blending toughening reinforced PBT environment-friendly flame retardant material, its components are proportioned by mass percentage: PBT 70%, polysilane flame retardant 18%, ethylene-octene copolymerized elastomer grafted horse 5% copolymer of toric anhydride, 5% micron diatomaceous earth, 0.1% silane coupling agent, 1.5% polysiloxane, 0.4% compound of primary antioxidant 1076 and auxiliary antioxidant 168, among which, micron The average particle size of diatomaceous earth is between 1 μm and 10 μm.

[0029] Preparation method: (1) Dry PBT at 130°C-140°C for 3-5 hours, control the moisture content below 0.03%, and wait for use; (2) Weigh micron diatomite and silane coupling agent according to weight ratio After taking it, add it to an ultrasonic oscillator or a high-speed mixer at no less than 3000 rpm, stir at a temperature of 80°C to 120°C for 10 to 60 minutes to disperse evenly, and then cool to below 40°C to obtain a surface...

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Abstract

The invention discloses a PBT environment-friendly and flame-retardant material toughened and reinforced by blending elastomer and micrometer particles. The PBT environment-friendly and flame-retardant material comprises components by mass: 50%-70% of PBT, 18%-25% of a halogen-free flame retardant, 5%-20% of elastormer, 5%-20% of the micrometer particles, 0.1%-0.5% of a surface treating agent, 0.2-1.5% of a lubricant, 0.1%-1% of an antioxidant and 0-0.5% of a light stabilizer. Compared with a conventional PBT material, the prepared PBT has high notch impact strength and good toughness, keeps relatively good strength, and can greatly increase rigidity, heat resistance and processability. At the same time, the used halogen-free flame retardant has the advantages of security, smoke-suppressing, no toxicity, environment protection and low cost. The PBT material has high flame-retardant property and excellent comprehensive properties, and can be used as materials for preparing electronics, electrics, automobile industries and mechanical components.

Description

technical field [0001] The invention relates to a polymer material, in particular to a PBT environment-friendly flame-retardant material blended with elastomers and micron particles to enhance toughness. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline linear saturated polyester resin, which has been widely used in electronic appliances, home appliances, automobile industry and other industries, but due to its low notched impact strength, high brittleness, Insufficient toughness, low flame retardancy and other shortcomings limit its application as a polymer structural material in certain fields. In the prior art, the use of elastomer toughening can greatly improve the impact resistance of PBT, but at the same time it also causes a serious decline in its strength, stiffness, heat resistance and processing performance, and the cost is also high; when using rigid particles to toughen at a certain Under the same conditions, it shows simultaneous t...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/08C08L23/16C08L9/02C08L55/02C08L35/06C08L51/00C08K13/06C08K9/04C08K9/06C08K3/26C08K3/34C08K3/30B29C47/92B29C48/92
CPCB29C48/04B29C48/40B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 不公告发明人
Owner QINGDAO XINZHAN PLASTIC
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