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Preparing method of ageing-resistant plastic composite material

A composite material and anti-aging technology, which is applied in the field of preparation of anti-aging plastic composite materials, can solve the problems of molecular structure change, material performance deterioration, and relative molecular mass decline, and achieve high retention rate, good anti-aging performance, and good The effect of mechanical properties

Inactive Publication Date: 2018-04-06
SUZHOU FUZHONG PLASTIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its essence is to start with the chemical reaction of the weak bond and trigger a series of chemical reactions. As a result, the molecular structure of the polymer material changes or the relative molecular weight decreases, resulting in deterioration of the material performance, or even unusable

Method used

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  • Preparing method of ageing-resistant plastic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing an aging-resistant plastic composite material, comprising the following steps:

[0018] (1) Put 20g of polystyrene, 20g of bisphenol A polycarbonate, 10g of high-density polyethylene and 10g of epoxidized novolac resin into an oven and dry at 70°C for 3 hours;

[0019] (2) Add 5g ethylene-vinyl acetate copolymer, 2g sawdust wood powder, 6g2,2'-methylenebis(4-methyl-6-tert-butylphenol), 1g nano-titanium dioxide, 2g microcrystalline paraffin, 2ml Polydiethylsiloxane, 2ml castor oil and 2g white carbon black were put into a high-speed mixer and mixed for 3 minutes;

[0020] (3) Use a twin-screw extruder for extrusion granulation, the temperature of each zone is 180°C, 245°C, 245°C, 250°C, 250°C, 250°C, 245°C, the screw speed is 170r / min, and the feeding speed is 30r / min;

[0021] (4) After cooling, put it in an oven and dry it at a temperature of 70°C for 2 hours;

[0022] (5) Injection molding with an injection molding machine. The temperature of...

Embodiment 2

[0024] A method for preparing an aging-resistant plastic composite material, comprising the following steps:

[0025] (1) Put 22g of polystyrene, 22g of bisphenol A polycarbonate, 12g of high-density polyethylene and 12g of epoxidized novolac resin into an oven and dry at a temperature of 75°C for 3.5 hours;

[0026] (2) Add 6g of ethylene-vinyl acetate copolymer, 2.5g of sawdust wood powder, 7g of 2,2'-methylenebis(4-methyl-6-tert-butylphenol), 1.5g of nano-titanium dioxide, and 3g of microcrystalline paraffin , 2.5ml polydiethylsiloxane, 3ml castor oil and 2.5g white carbon black, put into high-speed mixer and mix for 4 minutes;

[0027] (3) Use a twin-screw extruder for extrusion granulation, the temperature of each zone is 180°C, 245°C, 245°C, 250°C, 250°C, 250°C, 245°C, the screw speed is 170r / min, and the feeding speed is 30r / min;

[0028] (4) After cooling, put it in an oven and dry it at a temperature of 70°C for 2 hours;

[0029] (5) Injection molding with an injec...

Embodiment 3

[0031] A method for preparing an aging-resistant plastic composite material, comprising the following steps:

[0032] (1) Put 25g of polystyrene, 25g of bisphenol A polycarbonate, 15g of high-density polyethylene and 15g of epoxidized novolak resin into an oven and dry at 80°C for 3.5 hours;

[0033] (2) Add 7.5g ethylene-vinyl acetate copolymer, 3g sawdust wood powder, 8g2,2'-methylenebis(4-methyl-6-tert-butylphenol), 2g nano titanium dioxide, 3.5g microcrystalline paraffin , 3ml of polydiethylsiloxane, 3.5ml of castor oil and 3g of white carbon black were put into a high-speed mixer and mixed for 5 minutes;

[0034] (3) Extrude and granulate with a twin-screw extruder, the temperature of each zone is 180-190°C, 245-250°C, 245-250°C, 255°C, 255°C, 255°C, 248°C, and the screw speed is 175r / min, the feeding speed is 33r / min;

[0035] (4) After cooling, put it in an oven and dry at a temperature of 73°C for 2.5 hours;

[0036] (5) Inject molding with an injection molding mac...

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Abstract

The invention provides a preparing method of an ageing-resistance plastic composite material. The preparing method comprises the following steps of 1, putting polystyrene, bisphenol A polycarbonate, high-density polyethylene and epoxidation linetype bakelite into a drying box to be dried; 2, adding ethylene-vinyl acetate copolymer, sawdust wood meal, 2,2'-methylene bis(4-methyl-6-tert-butylphenol), nanometer titanium dioxide, microcrystalline wax, polydiethylsiloxane, castor oil and white carbon black, and putting the materials into a high-speed mixer to be mixed; 3, using a twin-screw extruder to conduct extruding pelletizing; 4, cooling and afterwards putting the materials into the drying box to be dried; 5, using an injection molding machine to conduct injection molding forming. By means of the preparing method of the ageing-resistance plastic composite material, the prepared ageing-resistance plastic composite material has good mechanical performance before being aged, after 30 days of damp-heat aging, the mechanical performance is still good, the reservation rate is high, and the aging-resistant performance is excellent.

Description

technical field [0001] The invention relates to a preparation method of an aging-resistant plastic composite material. Background technique [0002] Plastic aging refers to the deterioration of polymer materials under the effects of heat, ultraviolet light, mechanical stress, chemical and biological erosion during the process of synthesis, storage, processing and use, that is, the deterioration of the properties of materials, such as yellowing, Cracks on the surface of the product, loss of luster, reduction in relative molecular weight, and more seriously, a significant decrease in mechanical properties such as impact strength, tensile strength, elongation, and flexural strength, thereby partially or completely losing its use value . Its essence starts from the chemical reaction of weak bonds and triggers a series of chemical reactions. As a result, the molecular structure of the polymer material changes or the relative molecular weight decreases, resulting in deterioration...

Claims

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Application Information

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IPC IPC(8): C08L25/06C08L69/00C08L23/06C08L63/04C08L23/08C08L97/02C08L83/04C08L91/00C08K3/22C08K3/36C08K5/13
CPCC08L25/06C08K2003/2241C08K2201/011C08L69/00C08L2205/035C08L23/06C08L63/04C08L23/0853C08L97/02C08L83/04C08L91/00C08K3/22C08K3/36C08K5/13
Inventor 史闵新
Owner SUZHOU FUZHONG PLASTIC CO LTD
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