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Method for preparing unsaturated polyester composite material filled with modified calcium carbonate

A polyester composite material, unsaturated technology, used in the field of composite materials, can solve the problems of poor impact resistance and aging resistance, product performance degradation, etc., to achieve improved heat resistance and aging resistance, and enhanced aging resistance. Effects of strength and toughness

Inactive Publication Date: 2016-04-27
梅庆波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: aiming at the brittle quality, poor impact resistance and aging resistance of unsaturated polyester resin after curing, the aging reaction can occur under the joint action of ultraviolet light and oxygen in sunlight under outdoor conditions, Oxidation and degradation of the unsaturated polyester resin, which eventually leads to the problem of product performance degradation, provides a method for preparing a modified calcium carbonate-filled unsaturated polyester composite material. The invention first prepares the modified calcium carbonate nano-powder, and then After mixing with mica powder, straw ashes, and active zinc oxide, a coupling agent is added to react, and the obtained solid is mixed with unsaturated polyester to obtain a composite material. The present invention combines unsaturated polyester with modified calcium carbonate to give full play to the nano The heat resistance and aging resistance of titanium dioxide make it evenly dispersed in the polymer matrix, which enhances the aging resistance of unsaturated polyester composite materials. Due to the large specific surface area and high surface activity of calcium carbonate nanoparticles, they can be used with Unsaturated polyester has a strong interaction, so filling it into the polymer matrix can improve the strength and toughness of the polymer composite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] First, take 50g of calcium oxide and add it to a 1000mL beaker, then add 200mL of boiling water at 100°C to the beaker, mix and stir evenly to form Ca(OH) 2 After standing for 10 hours, filter the slurry with a 160-mesh sieve to remove impurities and large particles, and then transfer it to a 500mL three-necked sesame cake; respectively take 60g of polyethylene glycol and 6g of polyphosphoric acid and place them in a 500mL three-necked flask, and use a magnetic stirrer to Stir at room temperature for 30 minutes, and then put it in a water bath at 85°C to stir for 2 hours. After the reaction, cool the product in the bottle to room temperature, then take 10 g of the reacted product and add it to the above-mentioned flask, and stir it mechanically for 25 minutes. Afterwards, a mixed gas of carbon dioxide and nitrogen was passed into the bottle, and the reaction was carried out at room temperature. After the reaction was completed for 20 minutes, it was filtered, and the obt...

example 2

[0024] First, take 55g of calcium oxide and add it to a 1000mL beaker, then add 230mL of boiling water at 100°C to the beaker, mix and stir evenly to form Ca(OH) 2 After standing for 11 hours, filter the slurry with a 170-mesh sieve to remove impurities and large particles, and then transfer it into a 500mL three-necked sesame cake; respectively take 63g of polyethylene glycol and 6.5g of polyphosphoric acid and place them in a 500mL three-necked flask, and stir them with a magnetic force The device was stirred at room temperature for 35 minutes, and then placed in a water bath at 87°C to stir for 2.5 hours. After the reaction, the product in the bottle was cooled to room temperature, and then 13 g of the reacted product was added to the above-mentioned flask, and mechanically stirred. After 30 minutes, the mixed gas of carbon dioxide and nitrogen was passed into the bottle, and the reaction was carried out at room temperature. After the reaction was completed for 25 minutes, i...

example 3

[0027] First, take 60g of calcium oxide and add it to a 1000mL beaker, then add 240mL of boiling water at 100°C to the beaker, mix and stir evenly to form Ca(OH) 2 After standing for 12 hours, filter the slurry with a 180-mesh sieve to remove impurities and large particles, and then transfer it into a 500mL three-necked sesame cake; respectively take 65g of polyethylene glycol and 7g of polyphosphoric acid in a 500mL three-necked flask, and use a magnetic stirrer to Stir at room temperature for 40 minutes, then put it in a water bath at 90°C and stir for 3 hours. After the reaction, cool the product in the bottle to room temperature, then add 15 g of the reacted product to the above-mentioned flask, and stir mechanically for 35 minutes. After that, a mixed gas of carbon dioxide and nitrogen was passed into the bottle, and the reaction was carried out at room temperature. After the reaction was completed for 30 minutes, it was filtered, and the obtained filter residue was washed...

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Abstract

The invention discloses a method for preparing an unsaturated polyester composite material filled with modified calcium carbonate, and belongs to the field of composite material. The method comprises the steps: firstly, preparing a modified calcium carbonate nano-powder, mixing the modified calcium carbonate nano-powder with a mica powder, straw ash and active zinc oxide, then adding a coupling agent to the mixture, carrying out a reaction, and mixing the obtained solid with unsaturated polyester to obtain the composite material. The unsaturated polyester and modified calcium carbonate are compounded, the heat resistance and the aging resistance of nano titanium dioxide are fully played, the nano titanium dioxide is allowed to be evenly dispersed in a polymer matrix, and thus the aging resistance of the unsaturated polyester composite material is improved; because calcium carbonate nanoparticles have the characteristics of high specific surface area and high surface activity and have strong interaction with unsaturated polyester, the polymer matrix is filled with the calcium carbonate nanoparticles, and the strength and the toughness of the polymer composite material can be improved.

Description

technical field [0001] The invention discloses a method for preparing a modified calcium carbonate-filled unsaturated polyester composite material, which belongs to the field of composite materials. Background technique [0002] Due to its excellent mechanical properties and stable dimensional properties, unsaturated polyester resin is widely used in mechanical, electrical and electronic, petrochemical industry, aerospace and weaponry and other structural components. However, the toughness of materials is very important in applications as the most basic mechanical properties. It refers to the ability of materials to withstand instantaneous loads without being damaged. The toughness and processing properties of unsaturated polyester resins are relatively poor. It has affected the expansion of the application range of this kind of materials. In order to meet the needs of various special fields, some researchers at home and abroad have improved its performance by changing the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/06C08K13/06C08K3/26C08K3/34C08K3/22C08K5/10
CPCC08L67/06C08K2201/011C08L2201/08C08L2203/30C08L61/06C08K13/06C08K2003/265C08K3/34C08K2003/2296C08K5/10
Inventor 梅庆波王志慧
Owner 梅庆波
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