Method and device for preparing low-VOC and low-odor polypropylene composite material by adopting multi-stage directional extraction and adsorption method

A technology of composite materials and polypropylene, applied in the field of polymer materials, can solve the problems of easy damage, limited adsorption and removal effect of adsorbent, difficult extraction agent, etc., to avoid mutual influence or interference, avoid single extraction effect, and avoid mutual The effect of action

Pending Publication Date: 2021-05-04
重庆科聚孚新材料有限责任公司 +1
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  • Application Information

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Problems solved by technology

[0004] At present, low-VOC and low-odor polymer materials are usually prepared by extractants and adsorbents, but because no new methods have been adopted, no equipment and process improvements have been made to cooperate with extraction and adsorption, resulting in some problems: (1) using a single Extractants are only effective for one or several types of low-molecular organic compounds, resulting in limited removal effects. However, using compound extractants, using traditional processing equipment and techniques, there is mutual interference between extractants during the extraction process, and even (2) Using a single adsorbent, the adsorbent with large pore size has limited adsorption and removal effect, while the nano-scale adsorbent with strong adsorption capacity is easily blocked by low molecular substances, resulting in adsorption and removal The effect is not good, and the compound adsorbent is used, and the above problems also exist; (3) The traditional adsorbent feeding method adopts feeding from the main feed. The extrusion of inorganic adsorbents is easy to damage the micropores, especially in the conveying section and melting section, resulting in a significant weakening of its adsorption capacity. The larger the pore size, the easier it is to be damaged, and the weakening of its adsorption capacity is more obvious; ( 4) The compounding of extractant and adsorbent adopts the traditional method of feeding from the main feed, and there will be a phenomenon of extraction and adsorption at the same time, which will make it difficult for the extractant to extract low-molecular substances from the adsorbent, resulting in extraction and The problem that the adsorption effect is not good

Method used

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  • Method and device for preparing low-VOC and low-odor polypropylene composite material by adopting multi-stage directional extraction and adsorption method
  • Method and device for preparing low-VOC and low-odor polypropylene composite material by adopting multi-stage directional extraction and adsorption method
  • Method and device for preparing low-VOC and low-odor polypropylene composite material by adopting multi-stage directional extraction and adsorption method

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Preparation of low-VOC and low-odor polypropylene composites by multi-stage directional extraction and adsorption

[0028] Weigh 68 parts of polypropylene resin, 1 part of naphthenic acid, 10 parts of calcium carbonate, 15 parts of conductive agent, 0.2 part of antioxidant 1010, 1 part of polyol wax and 0.05 part of silicone oil, mix well and add from the main feeding port Barrel, the screw speed is controlled to be 300rpm, through the screw, the mixture first passes through the conveying section (1-2 zone) of the barrel, the temperature of this section 1-2 zone is 70°C and 100°C in sequence, and then enters the extraction and melting section (3- Zone 4), the temperature in Zone 3-4 of this section is 160°C and 180°C in turn, after full extraction, vacuum extraction is carried out through the vacuum port 1 set on Zone 4 with a vacuum degree of -0.08MPa to remove naphthenic acid and dissolved Harmful volatile organic compounds in naphthenic acid; then enter the extractio...

Embodiment 2

[0030] Preparation of low-VOC and low-odor polypropylene composites by multi-stage directional extraction and adsorption

[0031] Weigh 82 parts of polypropylene resin, 1.5 parts of dicarboxylic acid, 5 parts of talcum powder, 5 parts of wear-resistant agent, 0.2 part of antioxidant 1010, 0.2 part of antioxidant 168, 0.5 part of oxidized polypropylene wax and 0.06 part of silicone oil After mixing, add the barrel from the main feeding port, control the screw speed to 350rpm, and make the mixture pass through the conveying section (1-2 area) of the machine barrel through the screw, and the temperature of the 1-2 area of ​​this section is 60 ° C and 90 ° C ℃, and then enter the extraction and melting section (3-4 zone), the temperature of this section 3-4 zone is 160 ℃, 180 ℃ in turn, after full extraction, carry out vacuum extraction through the vacuum port 1 set on the 4 zone, the vacuum degree is -0.08MPa, remove dicarboxylic acid and harmful volatile organic compounds dissol...

Embodiment 3

[0033] Preparation of low-VOC and low-odor polypropylene composites by multi-stage directional extraction and adsorption

[0034] Weigh 96 parts of polypropylene resin, 0.5 part of diphosphoric acid, 0.5 part of weathering agent, 0.5 part of antioxidant 1010, 0.5 part of antioxidant 168, 0.1 part of wax ester and 0.05 part of silicone oil, mix well and add from the main feeding port Barrel, the screw speed is controlled to be 400rpm, through the screw, the mixture first passes through the conveying section (1-2 zone) of the barrel, the temperature of this section 1-2 zone is 80°C and 90°C in turn, and then enters the extraction and melting section (3- Zone 4), the temperature in Zone 3-4 of this section is 160°C and 180°C in turn, after full extraction, vacuum extraction is carried out through the vacuum port 1 set on Zone 4, with a vacuum degree of -0.08MPa, to remove diphosphoric acid and soluble Harmful volatile organic compounds in diphosphoric acid; then enter the extract...

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Abstract

The invention relates to a method and a device for preparing a low-VOC and low-odor polypropylene composite material by adopting a multi-stage directional extraction and adsorption method, and belongs to the technical field of high polymer materials. The method specifically comprises the following steps: uniformly mixing the components for preparing the polypropylene composite material, adding the mixture into an extruder for extruding, and then, carrying out cooling, curing and drying. Directional extraction is carried out through an extracting agent A, an extracting agent B and an extracting agent C in sequence during melting in the extruder; harmful organic compounds in the polypropylene composite material are removed by combining vacuum extraction after extraction each time; and then step-by-step adsorption is carried out through an adsorbent D and an adsorbent E during plasticizing in the extruder. A multi-stage directional extraction and adsorption method is adopted, so that the extraction and adsorption effects are good, the dosage is small, the influence on the performance of a base material is small, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a method and a device for preparing low-VOC and low-odor polypropylene composite materials by adopting multi-stage directional extraction and adsorption methods. Background technique [0002] Polymer materials (plastic, rubber, etc.) are widely used in automobiles, home appliances, construction, office equipment, machinery and other fields due to their advantages such as light density, easy molding, corrosion resistance, and high cost performance. With the differentiation, individualization and high-end characteristics of market demand further highlighted, the development trend of "replacing steel with plastic" and "replacing wood with plastic" provides a broad market space for the development of the plastics industry. [0003] However, the extensive use of polymer materials has also brought many problems, mainly reflected in the pollution of the environment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L83/04C08L33/26C08K7/24C08K13/04C08K7/26C08K3/26C08K3/34B29C48/025
CPCC08L23/12B29C48/022B29C48/025C08K2201/011C08K2201/003C08L2205/035C08K2003/265C08K2201/014C08L83/04C08L33/26C08K7/24C08K13/04C08K7/26C08K3/26C08K3/34
Inventor 刘小林肖利群吕强陈健周雷叶淑英胡志苏俊业徐旭付莉红李福顺唐良忠刘罡
Owner 重庆科聚孚新材料有限责任公司
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