Preparation method of PIF foamed polymer sound insulation material

A foamed polymer and sound insulation material technology, applied in the field of sound insulation materials, can solve the problems of heavy weight and low sound insulation, and achieve the effects of light weight, improved sound insulation performance, and dense crystal arrangement

Pending Publication Date: 2022-02-11
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of low sound insulation and heavy quality of the existing materials, the present invention provides a method for preparing a PIF foamed polymer sound insulation material. The method includes preparation of PP blend material, pressure-induced flow molding of the blend material (PIF) treatment and supercritical CO 2 Foaming process to make periodic laminated polymer materials with gaps

Method used

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  • Preparation method of PIF foamed polymer sound insulation material
  • Preparation method of PIF foamed polymer sound insulation material
  • Preparation method of PIF foamed polymer sound insulation material

Examples

Experimental program
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Embodiment 1

[0037] 1) Dry PP in a constant temperature oven at 80°C for 6 hours, and dry PA6 in a constant temperature oven at 120°C for 12 hours. Take 100g of dried PP and 100g of dried PA6 (1:1 ratio) and mix them. Add 10g PP-g-MA compatibilizer (5wt.%, Sigma-Aldrich, specification: SA9100mark) and 1g antioxidant (5wt.‰, 1:1 mixture of antioxidant 1010 and coating antioxidant 168); Then, the material was blended with a Haake torque rheometer at a speed of 60r / min and a temperature of 230°C until the torque no longer changed with time, and it was recorded as PP / PA6.

[0038] 2) Place PP / PA6 on a flat heating table and heat to 230°C. After the material is completely softened, put it into a mold to make a rectangular block sample of 50*30*6mm; then put it into a mold cavity of 150*30*12mm In the automatic tablet press, it is subjected to pressure-induced flow treatment at a temperature of 150°C and a treatment pressure of 8.5MPa, such as figure 1 As shown, a sample of 150*30*2mm is prepar...

Embodiment 2

[0042] 1) Dry PP in a constant temperature oven at 80°C for 6 hours, and dry POE in a constant temperature oven at 60°C for 8 hours. Take 100g of dried PP and 100g of dried POE (1:1 ratio) and mix them. Add 10g PP-g-MA compatibilizer (5wt.%) and 1g antioxidant (5wt.‰, 1:1 mixture of antioxidant 1010 and coating antioxidant 168); The instrument blends the materials at a speed of 60r / min and a temperature of 190°C until the torque no longer changes with time and then takes it out, which is recorded as PP / POE.

[0043] 2) Place PP / POE on a flat heating table and heat to 190°C. After the material is completely softened, put it into a mold to make a rectangular block sample of 50*30*6mm; then put it into a mold cavity of 150*30*12mm In the process, it was subjected to pressure-induced flow treatment at a temperature of 140°C and a treatment pressure of 8.5 MPa in a fully automatic tablet press to prepare a sample piece of 150*30*2mm, which was recorded as PIF PP / POE. The benchmark...

Embodiment 3

[0047] 1) Dry PP in a constant temperature oven at 80°C for 6 hours, and dry TPU in a constant temperature oven at 60°C for 8 hours. Take 100g of dried PP and 100g of dried TPU (1:1 ratio) and mix them. Add 10g PP-g-MA compatibilizer (5wt.%) and 1g antioxidant (5wt.‰, 1:1 mixture of antioxidant 1010 and coating antioxidant 168); The machine blends the materials at the parameters of rotating speed of 60r / min and temperature of 170°C until the torque no longer changes with time, then take it out, and record it as PP / TPU.

[0048] 2) Place PP / TPU on a flat heating table and heat to 170°C. After the material is completely softened, put it into a mold to make a rectangular block sample of 50*30*6mm; then put it into a mold cavity of 150*30*12mm In the process, it was subjected to pressure-induced flow treatment at a temperature of 130°C and a treatment pressure of 8.5 MPa in a fully automatic tablet press to prepare a sample piece of 150*30*2mm, which was recorded as PIF PP / TPU. T...

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Abstract

The invention discloses a preparation method of a PIF foamed polymer sound insulation material, and the method comprises the following steps: preparing a PP blending material, carrying out pressure induced flow forming (PIF) treatment on the blending material, and carrying out a supercritical CO2 foaming process to prepare a periodic laminated structure high polymer material with gaps. The prepared material has the advantages of light weight, good processability, strong sound insulation performance and the like, and is expected to be widely applied to the fields of home decoration, traffic transportation, road sound insulation and the like.

Description

technical field [0001] The invention relates to a preparation method of a PIF (pressure induced flow forming) foamed polymer sound insulation material, belonging to the technical field of sound insulation materials. Background technique [0002] With the energy-saving, high-speed and lightweight development of various vehicles, composite materials with larger specific strength and lighter specific mass have begun to attract attention. Among them, polymer composite sound insulation materials have lighter weight and better Excellent processing performance and other characteristics have become the most popular sound insulation and noise reduction materials. Polymer composite materials can be made into various vibration and noise reduction materials by designing different structures, such as rubber that can consume vibration energy through damping, thermoplastic elastomers, and rigid fillers that can reflect and refract vibration waves, such as CaCO 3 , hollow glass microsphere...

Claims

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Application Information

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IPC IPC(8): C08J9/12C08J3/00C08L23/12C08L77/02C08L23/08C08L75/04
CPCC08J9/122C08J3/00C08J2203/06C08J2203/08C08J2323/12C08J2477/02C08J2377/02C08J2423/12C08J2323/08C08J2423/08C08J2375/04C08J2475/04
Inventor 金江明肖岳鹏陈枫费炎培谢添伟李鹏飞
Owner ZHEJIANG UNIV OF TECH
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