Special master batch for foamed polypropylene with high light oxygen stability and preparation method of special master batch

A technology of foaming polypropylene and stability, which is applied in the field of manufacturing foamed polypropylene special masterbatches to achieve the effects of improving dispersion and processability, improving the working environment of the workshop, and reducing processing difficulty and cost

Pending Publication Date: 2022-03-29
宿迁联宏新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Through the compounding of hindered amine light stabilizer and light shielding agent, supplemented by processing aids and antioxidants, the thermal oxygen and light oxygen stability of polypropylene foamed products during processing are effectively improved, and the problem of polypropylene foaming is solved. To solve the problem of discoloration of foamed products, through the synergistic effect between additives and the strengthening effect of nano-fillers, a special masterbatch for foamed polypropylene with high photo-oxygen stability and mechanical properties is prepared

Method used

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  • Special master batch for foamed polypropylene with high light oxygen stability and preparation method of special master batch
  • Special master batch for foamed polypropylene with high light oxygen stability and preparation method of special master batch
  • Special master batch for foamed polypropylene with high light oxygen stability and preparation method of special master batch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Special masterbatch for foamed polypropylene with high photo-oxygen stability:

[0025] Polypropylene 57wt%;

[0026] HALS-2020 30wt%;

[0027] Zinc oxide 10wt%;

[0028] Antioxidant 168 2wt%;

[0029] Zinc stearate 1wt%;

[0030] The mass percentages mentioned above are the percentages of the total mass.

[0031] According to the above percentage by weight, mix HALS-2020 with zinc oxide, then add to a high-speed mixer to neutralize antioxidant 168 and zinc stearate and mix at room temperature for 5-8 minutes at a speed of 40rpm to obtain a premix, which is finally measured by The pump and polypropylene are fed into the twin-screw extruder at 220 o C. Extrude and granulate, and dry to obtain a special masterbatch for foamed polypropylene with high light and oxygen stability, that is, an anti-aging masterbatch.

[0032] 10% of the anti-aging masterbatch obtained (accounting for the total mass) is added to the twin-screw extruder with polypropylene resin and foaming...

Embodiment 2

[0039] According to the scheme of Example 1, on the basis of Example 1, the addition amount and compounding ratio of the light stabilizer and light shielding agent were changed to prepare a special anti-aging masterbatch for light-oxygen stabilized polypropylene foam:

[0040] Polypropylene 87wt%;

[0041] HALS-2020 5wt%;

[0042] Zinc oxide 5wt%;

[0043] Antioxidant 168 2wt%;

[0044] Zinc stearate 1wt%;

[0045] The mass percentages mentioned above are the percentages of the total mass.

[0046] The preparation method and detection method of the special masterbatch for high photo-oxygen stability foamed polypropylene described in the present invention are the same as those in Example 1.

[0047] Tensile test: test according to GB / T 1040.5-2006; test results are shown in Table 1.

[0048] The results show that the surface of the product containing the special masterbatch of the present invention is not pulverized and does not fade, and the maximum force retention rate a...

Embodiment 3

[0050]According to the scheme of Example 1, on the basis of Example 1, the addition amount and compounding ratio of the light stabilizer and light shielding agent were changed to prepare a special anti-aging masterbatch for light oxygen stabilized polypropylene foam:

[0051] Polypropylene 72wt%;

[0052] HALS-2020 15wt%;

[0053] Zinc oxide 10wt%;

[0054] Antioxidant 168 2wt%;

[0055] Zinc stearate 1wt%;

[0056] The mass percentages mentioned above are the percentages of the total mass.

[0057] The preparation method and detection method of the special masterbatch for high photo-oxygen stability foamed polypropylene described in the present invention are the same as those in Example 1.

[0058] Tensile test: test according to GB / T 1040.5-2006; test results are shown in Table 1.

[0059] The results show that the surface of the product containing the special masterbatch of the present invention is not pulverized and does not fade, and the maximum force retention rate ...

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Abstract

The invention belongs to the technical field of plastic weather resistance, and particularly relates to a special master batch for foamed polypropylene with high light and oxygen stability and a preparation method thereof, the special master batch for foamed polypropylene with high light and oxygen stability comprises polypropylene, an antioxidant, a processing aid and at least one of a hindered amine light stabilizer and a light screener; according to the invention, the thermal oxidation stability and the light oxidation stability of a polypropylene foamed product in the processing process are effectively improved, the problem of discoloration of the polypropylene foamed product is solved, and the special master batch for foamed polypropylene with high light oxidation stability and mechanical properties is prepared through the synergistic effect of the auxiliaries and the enhancement effect of the nano filler; the master batch special for foamed polypropylene with high light-oxygen stability is simple in preparation process, the dispersion and processability of an additive in resin can be effectively improved through the master batch prepared by the invention, meanwhile, the processing difficulty and cost are reduced, the material performance is more efficiently improved, and the working environment of a workshop is improved.

Description

technical field [0001] The invention belongs to the technical field of weather resistance of plastics, and specifically relates to a special masterbatch for foamed polypropylene with high light and oxygen stability and a preparation method thereof, in particular to a special masterbatch for foamed polypropylene with high light and oxygen stability for improving the problem of foaming and discoloration manufacturing method. Background technique [0002] Foaming materials are widely used in various fields such as medical treatment, sanitation, geotechnical engineering, water conservancy, construction, etc. due to their excellent performance, and most of them are polypropylene foaming materials. However, during the processing, use and storage of polypropylene foam, under the influence of heat, oxygen, light and other factors, aging and degradation phenomena such as discoloration and pulverization will occur, which greatly shortens the service life of the material and seriously ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K5/098C08K3/22C08K5/526C08K5/3492C08J9/10C08J3/22
CPCC08J3/226C08J9/103C08J9/0095C08J9/0066C08J9/0023C08J9/0038C08J9/0028C08J2323/12C08J2423/12C08K5/098C08K2003/2296C08K5/526C08K5/3492C08J2203/04
Inventor 冯洋吕巧莲谢胜利项瞻峰
Owner 宿迁联宏新材料有限公司
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