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Heat-resistant flame-retardant impact-resistant polyvinyl chloride/polylactic acid alloy and preparation method thereof

A technology of polyvinyl chloride and polylactic acid, which is applied in the field of heat-resistant, flame-retardant and impact-resistant polyvinyl chloride/polylactic acid alloy and its preparation, can solve the problems of improvement of flame retardancy and impact performance, different components and principles, Problems such as limited application range, to achieve the effect of good melt fluidity, high mechanical properties, and good compatibility

Inactive Publication Date: 2021-02-09
RES INST OF ZHEJIANG UNIV TAIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] CN201910020584.1 discloses a polymer plasticized PVC 3D printing material and its preparation method. Although polyvinyl chloride-polylactic acid composite material is mentioned, the components and principles of the material are different from those in this claim, and the preparation The method is also different, the scope of application is limited to 3D printing materials, and the improvement of flame retardancy and impact performance is not mentioned

Method used

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  • Heat-resistant flame-retardant impact-resistant polyvinyl chloride/polylactic acid alloy and preparation method thereof
  • Heat-resistant flame-retardant impact-resistant polyvinyl chloride/polylactic acid alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A heat-resistant, flame-retardant and impact-resistant polyvinyl chloride / polylactic acid alloy, the plastic alloy comprises the following components by weight percentage:

[0033]

[0034]

[0035]The polylactic acid was dried in a dew point dryer. Set the drying temperature to 90°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10rpm, and the drying time to 4h. The organophosphorus-polycarbonate copolymer is placed in a dew point dryer for drying. Set the drying temperature to 110°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10 rpm, and the drying time to 6 hours. Make sure the moisture content of the above materials is below 200ppm.

[0036] Put polyvinyl chloride in a vacuum high-speed mixer, set the stirring speed of the mixer to 400rpm, the stirring temperature at 105°C, and the vacuum degree -0.1Mpa, slowly add liquid calcium-zinc stabilizer and antioxidant, and stir fully for 10min to ensure that th...

Embodiment 2

[0041] A heat-resistant, flame-retardant and impact-resistant polyvinyl chloride / polylactic acid alloy, the plastic alloy comprises the following components by weight percentage:

[0042] component name weight percentage PVC 20 poly d-lactic acid 72 Organophosphorus-polycarbonate copolymer 5 Solid Calcium-Zinc Stabilizer 2 polyepoxypropyl fatty acid ester 0.5 Antioxidant 1010 0.3 Antioxidant 168 0.2

[0043] The polylactic acid was dried in a dew point dryer. Set the drying temperature to 90°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10rpm, and the drying time to 4h. The organophosphorus-polycarbonate copolymer is placed in a dew point dryer for drying. Set the drying temperature to 110°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10 rpm, and the drying time to 6 hours. Make sure the moisture content of the above materials is below 200ppm.

[0044] Put poly...

Embodiment 3

[0049] A heat-resistant, flame-retardant and impact-resistant polyvinyl chloride / polylactic acid alloy, the plastic alloy comprises the following components by weight percentage:

[0050] component name weight percentage PVC 46 poly-L-lactic acid 46 Organophosphorus-polycarbonate copolymer 4 Solid Calcium-Zinc Stabilizer 3.5 polyepoxypropyl fatty acid ester 1 Antioxidant 1010 0.3 Antioxidant 168 0.2

[0051] The polylactic acid was dried in a dew point dryer. Set the drying temperature to 90°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10rpm, and the drying time to 4h. The organophosphorus-polycarbonate copolymer is placed in a dew point dryer for drying. Set the drying temperature to 110°C, the dew point temperature to -60°C, the stirring speed of the hopper to 10 rpm, and the drying time to 6 hours. Make sure the moisture content of the above materials is below 200ppm.

[0052] Put poly...

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Abstract

The invention discloses a heat-resistant, flame-retardant and impact-resistant polyvinyl chloride / polylactic acid alloy and a preparation method thereof. The heat-resistant, flame-retardant and impact-resistant polyvinyl chloride / polylactic acid alloy comprises 20-72 wt% of polyvinyl chloride, 20-72 wt% of polylactic acid, 3-5 wt% of an organophosphorus carbonate copolymer, 3-5 wt% of a stabilizer, 0.5-1 wt% of polyfatty acid ester and 0.3-0.8 wt% of an antioxidant. The prepared heat-resistant flame-retardant impact-resistant polyvinyl chloride / polylactic acid alloy has a higher vicat softening point, higher notch impact strength and a higher limit oxygen index; under the condition of the same notch impact strength, the material has a higher vicat softening point, a higher flame retardantgrade and a higher limit oxygen index.

Description

technical field [0001] The invention relates to a chemical and a preparation method thereof, in particular to a heat-resistant, flame-retardant, and impact-resistant polyvinyl chloride / polylactic acid alloy and a preparation method thereof. Background technique [0002] Polyvinyl chloride is one of the general-purpose polymers with the largest output, the most stable production capacity and low price in the world, and is suitable for many application scenarios. Polyvinyl chloride has a special structure, and its processing temperature is higher than its decomposition temperature, so it needs to be modified, and its processing temperature can be lowered by plasticizing before it can be processed. [0003] Commonly used polyvinyl chloride plasticizers are all small molecular weight liquids, which can produce plasticizing effect by lubricating the polyvinyl chloride molecular chains, thus weakening the agglomeration between molecular chains. PVC itself is non-toxic, but common...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L67/04C08L69/00C08K5/526C08K5/134
CPCC08L27/06C08L67/04C08L2201/08C08L2201/02C08L2205/025C08L2205/035C08L69/00C08K5/526C08K5/1345
Inventor 周伯昕黄然丁伟伟蒋熙琳
Owner RES INST OF ZHEJIANG UNIV TAIZHOU
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