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Elastomer coated calcium carbonate particle and carbon fiber modified PBT (polybutylece terephthalate) composite material

A composite material, calcium carbonate technology, applied in the field of PBT composite materials, can solve the problems of reducing material rigidity, reducing material toughness, unpredictable material mechanical properties, etc., to achieve the effect of improving toughness and rigidity, and improving corrosion resistance

Inactive Publication Date: 2015-02-11
QINGDAO XINZHAN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet in above-mentioned prior art, use elastomer alone and also can reduce the rigidity of material while improving material toughness; And use inorganic rigid particle alone can reduce the toughness of material again while improving material rigidity; Elastomer, inorganic rigidity Particle blending will make the interaction of the two substances affect each other, so that the mechanical properties of the material will not get the expected effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] An elastomer-coated calcium carbonate particle and carbon fiber-modified PBT composite material, the components of which are: 65% PBT, 10% nano-calcium carbonate, 1.5% diisocyanate, 3% glycol compound, Maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) 5%, carbon fiber 15%, hindered phenol antioxidant 1010 and phosphite antioxidant 168 compound 0.5%. The carbon fiber is a carbon fiber whose surface has been oxidized. The specific method is to prepare a treatment solution, mix and prepare 60wt% nitric acid, 30wt% sodium nitrate and 10wt% hydrogen peroxide, and add water to prepare a solution with a concentration of 60% to 70%. Then heat it to 60°C-90°C, and then add carbon fiber for soaking treatment. At a reaction temperature of 40°C-90°C, after soaking for 30-90 minutes, take out the carbon fiber, rinse it with water, and then soak it at 80°C-120°C. Drying at high temperature can obtain the carbon fiber whose surface has been oxidized.

[0023] Preparation...

Embodiment 2

[0025] An elastomer-coated calcium carbonate particle and carbon fiber modified PBT composite material, its components are proportioned by mass percentage: PBT 65%, micron calcium carbonate 15%, diisocyanate 2%, glycol compound 4%, Maleic anhydride grafted ethylene-propylene-diene copolymer (EPDM-g-MAH) 6%, carbon fiber 10%, hindered phenol antioxidant 1010 and phosphite antioxidant 168 compound 1%. The carbon fiber is a carbon fiber whose surface has been oxidized. The specific method is to prepare a treatment solution, mix and prepare 70wt% nitric acid, 25wt% sodium nitrate and 5wt% hydrogen peroxide, and add water to prepare a solution with a concentration of 60% to 70%. Then heat it to 60°C-90°C, and then add carbon fiber for soaking treatment. At a reaction temperature of 40°C-90°C, after soaking for 30-90 minutes, take out the carbon fiber, rinse it with water, and then soak it at 80°C-120°C. Drying at high temperature can obtain the carbon fiber whose surface has been o...

Embodiment 3

[0028]An elastomer-coated calcium carbonate particle and carbon fiber modified PBT composite material, the components of which are proportioned by mass percentage: 80% of PBT, 5% of nano-calcium carbonate, 0.5% of diisocyanate, 1% of triol compound, Maleic anhydride grafted styrene-butadiene-styrene copolymer (SBS-g-MAH) 3%, carbon fiber 10%, compound of hindered phenol antioxidant 1010 and phosphite antioxidant 168 0.5 %. The carbon fiber is a carbon fiber whose surface has been oxidized. The specific method is to prepare a treatment solution, mix and prepare 65wt% nitric acid, 30wt% sodium nitrate and 5wt% hydrogen peroxide, and add water to prepare a solution with a concentration of 60% to 70%. Then heat it to 60°C-90°C, and then add carbon fiber for soaking treatment. At a reaction temperature of 40°C-90°C, after soaking for 30-90 minutes, take out the carbon fiber, rinse it with water, and then soak it at 80°C-120°C. Drying at high temperature can obtain the carbon fiber...

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Abstract

The invention discloses an elastomer coated calcium carbonate particle and carbon fiber modified PBT (polybutylece terephthalate) composite material comprising the following components by mass: 60%-80% of PBT, 5%-15% of calcium carbonate particles, 0.5%-2% of diisocyanate, 1%-4% of polyhydroxyl compounds, 2%-8% of maleic anhydride grafted polymer, 10%-25% of carbon fiber and 0.1%-1% of an antioxidant. The beneficial effect of the composite material is that, polyurethane rubber elastomer coated calcium carbonate particles are produced by in-situ polymerization of the diisocyanate and the polyhydroxyl compounds for formation of a calcium carbonate particle-elastomer core shell structure dispersing phase using the calcium carbonate particles as a core and the elastomer as a shell, PBT toughness and rigidity can be significantly improved, high modulus, high strength, heat resistance, corrosion resistance and other aspects of the PBT can be well promoted by addition of the carbon fiber, and the composite material can be widely applied in the field of auto parts, household appliances, building structure materials and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a PBT composite material modified by elastomers covering calcium carbonate particles and carbon fibers. Background technique [0002] Polybutylene terephthalate (PBT) is a crystalline polymer with excellent comprehensive performance and wide application. applications in some fields. Usually, functional modification of PBT such as toughening and strengthening can further expand its application range. At present, there are mainly the following methods for the toughening and strengthening modification of PBT: the toughening and modification of PBT by elastomers. After mixing the elastomers with PBT and additives, extruding and granulating can significantly improve the impact strength of PBT, and the toughening effect is better; inorganic Toughening and strengthening modification of PBT by rigid particles Extruding and granulating inorganic rigid particles after mixing PB...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08K13/06C08K9/10C08K9/02C08K3/26C08K7/06
Inventor 张正夏忠兵高天红
Owner QINGDAO XINZHAN PLASTIC
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