Synthesis and Interfacial Adhesion Interaction of Borate Ester Bonding Agents Used for HTPB Propellants

2016 ◽  
Vol 41 (5) ◽  
pp. 814-821 ◽  
Author(s):  
Xi-Long Zhang ◽  
Miao-E Liu ◽  
Wen-Zhao Liu ◽  
Jian-Ru Deng
Keyword(s):  
Interfacial Adhesion ◽  
Bonding Agents ◽  
Adhesion Interaction ◽  
Borate Ester

Assessment of Interfacial Adhesion of Adhesively Bonded 3D-Printed Thermoplastics

2020 ◽  
Vol 1005 ◽  
pp. 157-165
Author(s):  
Ray Noel M. Delda ◽  
Brian Jumaquio Tuazon ◽  
John Ryan Cortez Dizon
Keyword(s):  
Polylactic Acid ◽  
Interfacial Adhesion ◽  
Acrylonitrile Butadiene Styrene ◽  
Optical Microscope ◽  
Interfacial Resistance ◽  
Adhesively Bonded ◽  
Bonding Agents ◽  
Fused Deposition ◽  
3D Printed ◽  
Butadiene Styrene

The aim of this study is to evaluate the interfacial adhesion of Fused Deposition Model (FDM)-printed Acrylonitrile butadiene styrene (ABS) and Polylactic acid (PLA) bonded using commercially – available epoxy and elastomeric bonding agents. An adhesive was applied to the 3D printed specimen to quantify the interfacial resistance, the surface was then examined under an optical microscope in order to assess the reaction of the polymer to the adhesives. The results reported in the present work allow the conclusion of levels of bond improvement in the polymers.

Synthesis and Application of Borate Ester Bonding Agents for a Four-Component Hydroxy-Terminated Polybutadiene Propellant

2015 ◽  
Vol 40 (6) ◽  
pp. 831-837 ◽  
Author(s):  
Xi-Long Zhang ◽  
Miao-E Liu ◽  
Xiang-Lu Tan ◽  
Jie Peng ◽  
Jian-Ru Deng
Keyword(s):  
Bonding Agents ◽  
Borate Ester

scholarly journals Research Progress of Bonding Agents and Their Performance Evaluation Methods

Molecules ◽  
2022 ◽  
Vol 27 (2) ◽  
pp. 340
Author(s):  
Junyan Gan ◽  
Xue Zhang ◽  
Wei Zhang ◽  
Rui Hang ◽  
Wuxi Xie ◽  
...  
Keyword(s):  
Mechanical Analysis ◽  
Evaluation Methods ◽  
Research Progress ◽  
Bonding Agents ◽  
Borate Ester ◽  
Different Types ◽  
Angle Method ◽  
Neutral Polymer ◽  
Design Ideas

Bonding agents are an important type of additive that are used to increase the interfacial interaction in propellants. A suitable bonding agent can prevent the dewetting between the oxidant and binder, and thus effectively improve the mechanical properties of the propellant. In the current paper, the bonding mechanisms and research progress of different types of bonding agents such as alcohol amine bonding agents, borate ester bonding agents, aziridine bonding agents, hydantoin bonding agents, neutral polymer bonding agents, and so on, are reviewed and discussed. The evaluation methods of their bonding performances including molecular dynamic simulation, contact angle method, in situ loading SEM, characterization analysis, and mechanical analysis are summarized to provide design ideas and reference for future studies.

Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

1993 ◽  
Vol 51 ◽  
pp. 1200-1201
Author(s):  
S.D. Smith ◽  
R.J. Spontak ◽  
D.H. Melik ◽  
S.M. Buehler ◽  
K.M. Kerr ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Diblock Copolymers ◽  
Ternary Blends ◽  
Mechanical Mixing ◽  
Design Considerations ◽  
Covalently Bonded ◽  
Homopolymer Blends ◽  
Emulsifying Agent ◽  
Surface Active ◽  
Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

An Energy-Based interpretation of Interfacial Adhesion from Single Fibre Composite Fragmentation Testing

1993 ◽  
Vol 2 (5) ◽  
pp. 096369359300200 ◽  
Author(s):  
H.D. Wagner ◽  
S. Ling
Keyword(s):  
Interfacial Adhesion ◽  
Mechanical Characteristics ◽  
Interfacial Shear Strength ◽  
Fibre Composite ◽  
Stress Transfer ◽  
Single Fibre ◽  
Transfer Length ◽  
Fragmentation Test ◽  
Energy Balance Approach ◽  
Fibre Matrix

An energy balance approach is proposed for the single fibre composite (or fragmentation) test, by which the degree of fibre-matrix bonding is quantified by means of the interfacial energy, rather than the interfacial shear strength, as a function of the fibre geometrical and mechanical characteristics, the stress transfer length, and the debonding length. The validity of the approach is discussed using E-glass fibres embedded in epoxy, both in the dry state and in the presence of hot distilled water.

Mechanical and thermal characterization of grafted PP-NCC nanocomposites

2019 ◽  
pp. 089270571987822
Author(s):  
Saud Aldajah ◽  
Mohammad Y Al-Haik ◽  
Waseem Siddique ◽  
Mohammad M Kabir ◽  
Yousef Haik
Keyword(s):  
Thermal Properties ◽  
Interfacial Adhesion ◽  
Thermal Characterization ◽  
Mechanical And Thermal Properties ◽  
Screw Extruder ◽  
Scanning Calorimetry ◽  
Three Point Bending ◽  
Twin Screw ◽  
Thermal Stability Of

This study reveals the enhancement of mechanical and thermal properties of maleic anhydride-grafted polypropylene (PP- g-MA) with the addition of nanocrystalline cellulose (NCC). A nanocomposite was manufactured by blending various percentages of PP, MA, and NCC nanoparticles by means of a twin-screw extruder. The influence of varying the percentages of NCC on the mechanical and thermal behavior of the nanocomposite was studied by performing three-point bending, nanoindentation, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and Fourier-transform infrared (FTIR) spectroscopy tests. The novelty of this study stems on the NCC nanoparticles and their ability to enhance the mechanical and thermal properties of PP. Three-point bending and nanoindentation tests revealed improvement in the mechanical properties in terms of strength, modulus, and hardness of the PP- g-MA nanocomposites as the addition of NCC increased. SEM showed homogeneity between the mixtures which proved the presence of interfacial adhesion between the PP- g-MA incorporated with NCC nanoparticles that was confirmed by the FTIR results. DSC and TGA measurements showed that the thermal stability of the nanocomposites was not compromised due to the addition of the coupling agent and reinforced nanoparticles.

scholarly journals Importance of Interfacial Adhesion Condition on Characterization of Plant-Fiber-Reinforced Polymer Composites: A Review

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 438
Author(s):  
Ching Hao Lee ◽  
Abdan Khalina ◽  
Seng Hua Lee
Keyword(s):  
Thermal Properties ◽  
Polymer Composites ◽  
Interfacial Adhesion ◽  
Fiber Reinforced Polymer ◽  
Plant Fiber ◽  
Plant Fibers ◽  
Natural Plant ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites ◽  
Adhesion Condition

Plant fibers have become a highly sought-after material in the recent days as a result of raising environmental awareness and the realization of harmful effects imposed by synthetic fibers. Natural plant fibers have been widely used as fillers in fabricating plant-fibers-reinforced polymer composites. However, owing to the completely opposite nature of the plant fibers and polymer matrix, treatment is often required to enhance the compatibility between these two materials. Interfacial adhesion mechanisms are among the most influential yet seldom discussed factors that affect the physical, mechanical, and thermal properties of the plant-fibers-reinforced polymer composites. Therefore, this review paper expounds the importance of interfacial adhesion condition on the properties of plant-fiber-reinforced polymer composites. The advantages and disadvantages of natural plant fibers are discussed. Four important interface mechanism, namely interdiffusion, electrostatic adhesion, chemical adhesion, and mechanical interlocking are highlighted. In addition, quantifying and analysis techniques of interfacial adhesion condition is demonstrated. Lastly, the importance of interfacial adhesion condition on the performances of the plant fiber polymer composites performances is discussed. It can be seen that the physical and thermal properties as well as flexural strength of the composites are highly dependent on the interfacial adhesion condition.

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