A method for preparing light-weight pet composite foam material by melt blown technology

A composite foaming and melt-blown technology, which is applied in the field of composite foaming materials, can solve the problems of low molecular weight, cell rupture, collapse, merger, and difficulty in bearing the tensile stress of bubbles in PET foaming materials, and achieves high foaming rate. , The effect of high foaming ratio and uniform cells

Active Publication Date: 2022-03-15
宜兴市泰宇汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The PET foam material obtained by conventional methods has low molecular weight, narrow molecular weight distribution, very low melt viscosity and strength, and it is difficult to withstand the tensile stress when the bubbles grow during the foaming process, and it is easy to cause cell rupture, collapse, and merger; At the same time, conventional PET is easily degraded during the molding process at a temperature higher than the melting point, and the crystallization rate is low. In the prior art, there has not been a process for preparing lightweight PET composite foam materials using meltblown technology.

Method used

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  • A method for preparing light-weight pet composite foam material by melt blown technology
  • A method for preparing light-weight pet composite foam material by melt blown technology

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Embodiment 1: a kind of method utilizing melt-blown technology to prepare lightweight PET composite foaming material, comprises the following steps:

[0025] S1, ingredients;

[0026] Weigh respectively by weight: 18 parts of PET resin, 6 parts of SG-2 polyvinyl chloride resin, 5 parts of wood flour, 4 parts of EPDM rubber, 3 parts of hydroxymethyl cellulose, 2 parts of polylactic acid, and 1 part of nucleating agent, 0.5 part of dispersing agent, 1 part of flame retardant, and 3 parts of foaming agent; wherein, the nucleating agent is calcium carbonate solution, the dispersing agent is methyl amyl alcohol, the flame retardant is aluminum hydroxide aqueous solution, foaming agent The foaming agent is azodicarbonamide;

[0027] S2, raw material modification;

[0028] Put the PET resin, SG-2 polyvinyl chloride resin, wood powder, EPDM rubber, hydroxymethylcellulose and polylactic acid obtained in step S1 into the reaction kettle, and react at 235°C for 0.5h; after the r...

Embodiment 2

[0033] Embodiment 2: a kind of method utilizing melt-blown technology to prepare lightweight PET composite foaming material, comprises the following steps:

[0034] S1, ingredients;

[0035] Weighed in parts by weight: 23 parts of PET resin, 19 parts of SG-2 polyvinyl chloride resin, 113 parts of wood flour, 7 parts of EPDM rubber, 5 parts of hydroxymethyl cellulose, 6 parts of polylactic acid, and 2 parts of nucleating agent, 1.8 parts of dispersing agent, 2 parts of flame retardant, 6 parts of foaming agent; wherein, nucleating agent is calcium carbonate solution, dispersing agent is methyl amyl alcohol, flame retardant is aluminum hydroxide aqueous solution, foaming agent The foaming agent is azodicarbonamide;

[0036] S2, raw material modification;

[0037]First, PET resin, SG-2 polyvinyl chloride resin, wood powder, EPDM rubber, hydroxymethyl cellulose and polylactic acid are mixed evenly, and the mixed material is preheated to 160°C and then added to the screw extruder...

Embodiment 3

[0042] Embodiment 3: a kind of method utilizing melt-blown technology to prepare lightweight PET composite foaming material, comprises the following steps:

[0043] S1, ingredients;

[0044] Weighed in parts by weight: 45 parts of PET resin, 27 parts of SG-2 polyvinyl chloride resin, 13 parts of wood flour, 9 parts of EPDM rubber, 6 parts of hydroxymethyl cellulose, 9 parts of polylactic acid, and 3 parts of nucleating agent, 0.5 part of dispersing agent, 3 parts of flame retardant, 8 parts of foaming agent; wherein, nucleating agent is calcium carbonate solution, dispersing agent is methyl amyl alcohol, flame retardant is aluminum hydroxide aqueous solution, foaming agent The foaming agent is azodicarbonamide;

[0045] S2, raw material modification;

[0046] First, PET resin, SG-2 polyvinyl chloride resin, wood flour, EPDM rubber, hydroxymethyl cellulose and polylactic acid are mixed evenly, and the mixed material is preheated to 290°C and then added to a screw extruder to ...

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Abstract

The invention discloses a method for preparing light-weight PET composite foaming materials by using melt-blown technology, including ingredients; PET resin, SG-2 polyvinyl chloride resin, wood powder, EPDM rubber, and methylol Cellulose, polylactic acid, nucleating agent, dispersant, flame retardant and foaming agent; raw material modification; PET resin, SG‑2 polyvinyl chloride resin, wood powder, EPDM rubber, hydroxymethyl fiber Put element and polylactic acid into the reaction kettle to heat and react, then add nucleating agent, dispersant, flame retardant and foaming agent to continue the reaction to obtain modified raw material slices; melt processing; melt and blend the modified raw material slices, and put them into Heat up the reaction in the reactor to obtain the melt-blown material; melt-blown molding; put the melt-blown material in the melt-blown screw extruder, and after the melt-blown molding, the lightweight PET composite performance is excellent, which is suitable for mass promotion.

Description

technical field [0001] The invention relates to the technical field of composite foaming materials, in particular to a method for preparing lightweight PET composite foaming materials by utilizing melt blown technology. Background technique [0002] PET foam material has the unique advantages of low density, high strength, low water absorption, and good sound insulation and heat insulation performance. As a structural foam material, it can significantly increase strength and stiffness without increasing weight; PETPET foam material is mainly used for fiber, A small amount is used in film and engineering plastics; PET fiber is mainly used in the textile industry. PET film is mainly used for electrical insulation materials, such as capacitors, cable insulation, printed circuit wiring substrates, electrode slot insulation, etc. Another application field of PET film is film base and base tape, such as movie film, X-ray film, audio tape, electronic computer tape, etc. PET films...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L27/06C08L97/02C08L23/16C08L1/28C08L67/04C08K3/26C08K5/05C08K3/22C08J9/10
CPCC08J9/103C08J2367/02C08J2427/06C08J2497/02C08J2423/16C08J2203/04C08J2397/02C08J2467/02C08K2003/265C08K5/05C08K2003/2227
Inventor 王泽云高国明杨明潘建民唐惠明吴敏郑彩彩
Owner 宜兴市泰宇汽车零部件有限公司
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