Rice hull powder modified recycled polyvinyl chloride composition and preparation method thereof

A technology of polyvinyl chloride and rice husk powder is applied in the field of modified and regenerated polyvinyl chloride composition of rice husk powder and its preparation, which can solve the problems of large difference in bulk density, difficulty in mixing uniformly, poor mechanical properties, etc. Excellent performance, good mechanical properties, high tensile strength effect

Active Publication Date: 2019-01-15
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, usually through a twin-screw extruder, rice husk powder is directly used to modify the regenerated polyvinyl chloride composition, which has the following problems: 1. The ash content of rice husk powder is high, and most of it is silica concentrated in Surface, forming a surface hydrophobic layer, poor compatibility with recycled polyvinyl chloride, resulting in poor mechanical properties of the final product; 2. Due to the large difference in bulk density between recycled polyvinyl chloride and rice husk powder, it is difficult to mix evenly, and the rice husk powder is mixed 3. After the regenerated polyvinyl chloride and the rice husk powder are evenly mixed, it is difficult to cut the material when processed by the extruder; 4. Regenerated polyvinyl chloride and rice husk powder often contain solid particles such as stones, which are easy to block the discharge die of the extruder; 5. When the composition is melt-extruded, the rice husk powder has poor dispersibility, which seriously affects the product mechanical properties

Method used

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  • Rice hull powder modified recycled polyvinyl chloride composition and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] The rice husk powder modified regenerated polyvinyl chloride composition in this example is made from the following raw materials in parts by weight: 100 parts of regenerated polyvinyl chloride, 3 parts of stearic acid amide, 15 parts of rice husk powder, 2 parts of ethylene-acrylate copolymer material, 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168; wherein the particle size of rice husk powder is 150 mesh;

[0025] The preparation method of the rice husk powder modified regenerated polyvinyl chloride composition of the present embodiment comprises the following steps:

[0026] S1. Weigh the regenerated polyvinyl chloride and stearic acid amide in parts by weight, add them to the blender, the speed of the blender is 300r / min, and mix for 2min;

[0027] S2, take the rice husk powder of weight part, join in the mixer of step S1, the speed of mixer is 300r / min, mix 2min, then add the compatibilizer of weight part, antioxidant, mix and stir 2min, obtain mixed m...

Embodiment 2

[0030] The rice husk powder modified regenerated polyvinyl chloride composition in this example is made of the following raw materials in parts by weight: 100 parts of regenerated polyvinyl chloride, 2.5 parts of stearic acid amide, 20 parts of rice husk powder, 2.5 parts of ethylene-acrylate copolymer 0.1 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.3 part of antioxidant DSTDP; wherein the particle size of rice husk powder is 200 mesh;

[0031] The preparation method of the rice husk powder modified regenerated polyvinyl chloride composition of the present embodiment comprises the following steps:

[0032] S1. Weigh the regenerated polyvinyl chloride and stearic acid amide in parts by weight, add them to the blender, the speed of the blender is 400r / min, and mix for 5min;

[0033] S2, take the rice husk powder of weight part, join in the mixer of step S1, the speed of mixer is 350r / min, mix 5min, then add the compatibilizer of weight part, antioxidant, mix and sti...

Embodiment 3

[0036] The rice husk powder modified regenerated polyvinyl chloride composition in this example is made of the following raw materials in parts by weight: 100 parts of regenerated polyvinyl chloride, 6 parts of stearic acid amide, 35 parts of rice husk powder 150 mesh, 3 parts of ethylene-acrylic acid Ester copolymer, 0.2 part of antioxidant 1010, 0.3 part of antioxidant 168, 0.3 part of antioxidant DSTDP; wherein the particle size of rice husk powder is 200 mesh;

[0037] The preparation method of the rice husk powder modified regenerated polyvinyl chloride composition of the present embodiment comprises the following steps:

[0038] S1. Weigh the regenerated polyvinyl chloride and stearic acid amide in parts by weight, add them to the blender, the speed of the blender is 400r / min, and mix for 5min;

[0039] S2, take the rice husk powder of weight part, join in the mixer of step S1, the speed of mixer is 400r / min, mix 5min, then add the compatibilizer of weight part, antioxid...

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Abstract

The invention provides a rice hull powder modified recycled polyvinyl chloride composition and a preparation method thereof, and relates to the technical field of polymer materials. The rice hull powder modified recycled polyvinyl chloride composition is prepared from the following raw materials: recycled polyvinyl chloride, octadecanamide, rice hull powder, a compatilizer and an antioxidant. Therice hull powder modified recycled polyvinyl chloride composition of the invention has high tensile strength, bending strength, hardness, heat distortion temperature and excellent mechanical property;and by the rice hull powder modified recycled polyvinyl chloride composition preparation method of the invention, the rice hull powder is easy to unload and the feeding mouth of an extruder or the die head will not be blocked.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a rice husk powder modified regenerated polyvinyl chloride composition and a preparation method thereof. Background technique [0002] The rice husk powder modified regenerated polyvinyl chloride composition can not only make full use of the regenerated polyvinyl chloride (recovered polyvinyl chloride), but also reduce the cost. The application of rice husk powder in the modified plastic industry is a measure to turn waste into treasure, which can increase farmers' income and reduce environmental pollution caused by the incineration of rice husk powder. [0003] In the prior art, usually through a twin-screw extruder, rice husk powder is directly used to modify the regenerated polyvinyl chloride composition, which has the following problems: 1. The ash content of rice husk powder is high, and most of it is silica concentrated in surface, forming a surface hydrophobic l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L97/02C08L23/08C08K5/00C08K5/20C08K5/134C08K5/526C08K5/372C08H8/00B29C48/92
CPCC08H8/00C08K5/372C08L27/06C08L2207/20C08L2205/03C08L2205/08C08L97/02C08L23/0869C08K5/20C08K5/1345C08K5/526C08K5/00
Inventor 杨桂生方永炜朱敏
Owner HEFEI GENIUS NEW MATERIALS
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