Study on anti-UV aging mechanism of PP-g-AN in the PP/PP-g-AN blend

Wang, Yazhen; Dong, Shaobo; Yue, Cheng’e; Ma, Di; Chen, Guoli

doi:10.1134/s1560090417030174

Cited by 11 publications

(20 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the amount of MESO increased from 0% to 45%, the amount of compressive deformation decreased from 15.2% to 6.2%. The reason is that the number of hard segments of the polyurethane matrix increase and the cell size decreases 42,52–54 . This result is consistent with the SEM.…”

Section: Resultssupporting

confidence: 86%

See 1 more Smart Citation

Preparation and performance study of modified soybean oil polyurethane foam used for soccer equipment

Zhang

Hao²,

Tian

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Soccer is known as the world's largest sport and has a wide range of players. Most of the materials used in existing football equipment are polyurethane extracted from petrochemical resources, which are gradually reduced and non‐renewable. Finding an alternative new material is an inevitable trend. Soybean oil (SO) was quantitatively transformed into polyols to afford industrially important high resilience flexible polyurethane foam(HR‐PUF). Photoinduced thiol‐ene click chemistry was investigated for the efficient preparation of modified soybean oil polyols (MESO) with primary hydroxyl groups. In order to improve the reaction efficiency and the degree of carbon–carbon double bonds functionalization, reduce reaction time, we have chosen a step‐by‐step method of adding. The effects of different reaction times and [thiol]/[ene] ratios on conversion and degree of functionalization were discussed. It is realized that under room temperature conditions, after 12 h of reaction, the carbon–carbon double bond of SO is almost completely converted and quantitatively converted into a hydroxyl group to a degree of 89%. The corresponding HR‐PUFs were prepared by mixing MESO with L2000 (Polyether Polyol). The effect of the difference in the amount of MESO added to the foam properties was investigated. Through the apparent density and a scanning electron microscope (SEM), it can be concluded that with the amount of MESO added increases, the cell size, opening ratio and the number of cells of HR‐PUF are decreased, the density is increased. Through thermogravimetric analysis (TGA) and dynamic thermomechanical analysis (DMA), it was proved that the thermal stability of the foam increased with the addition of MESO. Through 40% compression strength (CLD40%), ball rebound experiments, and static compression experiment. It is proved that the increase of the addition of MESO, the rebound resilience of HR‐PUF can be improved.

show abstract

Section: Resultssupporting

confidence: 86%

“…The reason is that the number of hard segments of the polyurethane matrix increase and the cell size decreases. 42,[52][53][54] This result is consistent with the SEM. In summary, the addition of MESO can enhance the elastic properties of HR-PUF.…”

Section: Mechanical Properties Of the Hr-pufsupporting

confidence: 90%

Preparation and performance study of modified soybean oil polyurethane foam used for soccer equipment

Zhang

Hao²,

Tian

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…1 These industries are increasingly turning to expanded materials as a promising solution, primarily due to their properties such as low weight, multiple impact resistance, and excellent energy absorption, as well as thermal and acoustic characteristics. [2][3][4] Foams are versatile multiphasic materials which find application in a variety of industrial fields (such as sports equipment, furniture, footwear, and packaging). 5 Moreover, foams have found interesting applications beyond these fields.…”

Section: Introductionmentioning

confidence: 99%

Gas foaming of polyphenyl sulfone: Effect of the blowing agents and operating parameters

Errichiello

Maio

2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Polyphenyl sulfone (PPSU) is a highly stable and rigid polymer with good chemical and mechanical resistance used in automotive and aerospace industries in high‐temperature applications during long‐operating cycles. PPSU foams are applied as core materials in lightweight composites ensuring high strength, fire resistance, thermal and acoustic insulation. In this paper, PPSU slabs are foamed using CO2, N2, and He as blowing agents (BAs). An experimental campaign is carried out to estimate the BAs' diffusivity in the polymer. In details, CO2 diffusivity ranges from 8E‐11 to 1E‐09 m2/s at temperatures from 220 to 260°C; diffusivity of N2 ranges from 2E‐10 to 5E‐09 m2/s (220–260°C) and it is 4E‐09 m2/s for He at 220°C. Foaming tests reveal an expansion ratio as high as 400% for CO2, 130% for He, and 150% for N2.Scanning electron microscopy analysis is also performed on produced samples, obtaining a cell number density of 1.3E07, 2.6E05, and 1.8E06 cells/cm3 when saturating, respectively, with CO2 at 220°C and 100 bar, N2 at 220°C and 100 bar, and He at 230°C and 100 bar.

show abstract

“…In addition, foamed materials have many advantages compared to solid materials, including better acoustic and thermal insulation, strong energy absorption, and low dielectric constants. [3][4][5] These excellent performances make the foamed materials have broad application prospects in many fields such as automotive parts, sporting equipment, and low-dielectric insulators. Microcellular injection molding (MIM) is an efficient and advanced technology to fabricate foamed products with complex shapes and high precision.…”

Section: Introductionmentioning

confidence: 99%

Lightweight and High Impact Polypropylene Foam Fabricated via Ultra‐Low Gas Pressure Injection Molding

Weng

et al. 2022

Macro Materials & Eng

View full text Add to dashboard Cite

Foamed materials play an important role in a lightweight design. Foam injection molding (FIM) is an advanced and convenient way to fabricate lightweight structural materials. Recently, a new foam injection molding machine is developed, which only needs ultra-low gas pressure to fabricate microcellular foam. As a universal plastic, polypropylene (PP) is widely used due to its good mechanical properties. But after foaming, the toughness of the PP tends to decrease. Herein, a lightweight and high-impact polypropylene foam is fabricated via the new FIM technology with an ultra-low nitrogen pressure of 6.5 MPa. PP/polyolefin elastomer (POE) foam with a tiny cell size of 4.13 μm and high cell density of 2.7 × 10 9 cm −3 is successfully obtained. Owing to the superior cellular structure, compared with the pure PP foam, after adding the POE component, the maximum impact performance is increased by 465%. In this work, an easy-to-industrialized method for preparing lightweight and high-impact injection-molded PP foams are presented.

show abstract

Study on anti-UV aging mechanism of PP-g-AN in the PP/PP-g-AN blend

Cited by 11 publications

References 27 publications

Preparation and performance study of modified soybean oil polyurethane foam used for soccer equipment

Preparation and performance study of modified soybean oil polyurethane foam used for soccer equipment

Gas foaming of polyphenyl sulfone: Effect of the blowing agents and operating parameters

Lightweight and High Impact Polypropylene Foam Fabricated via Ultra‐Low Gas Pressure Injection Molding

Contact Info

Product

Resources

About