Surface Hydrophilic Modification of Polypropylene Fiber by Hydrolysis of Silane Coupling Agent

2018 ◽  
Vol 779 ◽  
pp. 80-85
Author(s):  
Yi Wei Fei ◽  
Jun Ma ◽  
Shian Sun ◽  
Li Ping Tong ◽  
Hong Ming Liu
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Polypropylene Fiber ◽  
Hydrophobic Surface ◽  
Interface Bonding ◽  
Hydrophilic Modification ◽  
Modification Process ◽  
Silane Coupling ◽  
Ft Ir ◽  
Hydrolysis Of

Silane coupling agent is applied to modify polypropylene fiber. The modification effectively transfers the hydrophobic surface of polypropylene fiber to hydrophilic surface. Results from FT-IR, SEM and contact angle meter suggest that that the surface functional groups, the morphology and hydrophilia of polypropylene fiber is changed during the hydrolysis reactions of silane coupling agent. The modification process not only improve the surface hydrophilia of polypropylene fiber, but also convert the smooth surface of unmodified fibers to rough surface of modified fibers which gives stronger interface bonding force between fiber and substrate in the field of composite applications.

Effect of Surface Modified Foamed Fe Powder on Tribological Properties of Semi-Metallic Friction Material

2013 ◽  
Vol 668 ◽  
pp. 75-79
Author(s):  
Yang Cao ◽  
Yuan Kang Zhou ◽  
Jian Yu Wei ◽  
Tao Yue Yang ◽  
Hua Wei Nie
Keyword(s):  
High Temperature ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Tribological Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Hydrophobic Surface ◽  
Friction Material ◽  
Fe Powder ◽  
Silane Coupling

The silane coupling agent KH550 is used to modify foamed Fe powder(FFP) surface for obtain the hydrophobic surface, which is the very important component in semi-metallic friction material. It can improve high temperature bonding force between FFP and phenolic resin, further improve friction coefficient stableness of friction material and abrasion resistance. The modification effect of FFP is characterized by IR, and the tribological properties is characterized by XD-MSM constant speed friction test machine, the surface topography is characterized by SEM. The results indicate that FFP has been bonded to silane coupling agent, and formed hydrophobic surface what has the alkyl group. The changing of friction coefficient has reduced 23%, the average wear rate has declined 28.6%,and the wear rate has declined 32% at 350 °C after the friction material with modified FFP compare with the one with original FFP. And those changing are all because of the fact that the FFP modified by KH550 is difficult to peel off during the high temperature.

scholarly journals A cement paste–tail sealant interface modified with a silane coupling agent for enhancing waterproofing performance in a concrete lining system

RSC Advances ◽  
2019 ◽  
Vol 9 (13) ◽  
pp. 7165-7175 ◽  
Author(s):  
Fan Li ◽  
Yuyou Yang ◽  
Mingjiang Tao ◽  
Xiangqian Li
Keyword(s):  
Cement Paste ◽  
Coupling Agent ◽  
Surface Coating ◽  
Silane Coupling Agent ◽  
Hydrophobic Surface ◽  
Concrete Lining ◽  
Underground Structures ◽  
System P ◽  
Silane Coupling

Although hydrophobic surface coating of concrete is currently used to enhance waterproofing performance of underground structures, the chemical and mechanical incompatibility between them is a challenge to ensure long-term waterproofing properties.

Surface Functionalization of Zirconia Nanocrystals with Silane Coupling Agent and its Dispersion Behavior in O-Phenylphenoxyethyl Acrylate

2018 ◽  
Vol 922 ◽  
pp. 20-25 ◽  
Author(s):  
Hee Seon Lee ◽  
Jeong Min Park ◽  
Kyu Hong Hwang ◽  
Hyung Mi Lim
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Coupling Agents ◽  
Solvothermal Reaction ◽  
Silane Coupling Agents ◽  
Propyl Methacrylate ◽  
Silane Coupling ◽  
Ft Ir ◽  
Surface Modified ◽  
Dispersion Of Nanoparticles

Highly crystalline and dispersible zirconia, synthesized by solvothermal reaction of zirconium (IV) isopropoxide isopropanol complex in benzyl alcohol, were functionalized with silane coupling agent and dispersed with o-phenylphenoxyethyl acrylate (OPPEA). Silane coupling agents such as 3-aminopropyltriethoxysilane (APTES) of amino functional silane, decyltrimethoxysilane (DTMS) of alkyl functional silane and 3-(trimethoxysilyl) propyl methacrylate (MPS) of acrylate functional silane have been used to modify nanoparticle surfaces and obtain dispersion of nanoparticles within OPPEA. The surface modified zirconia was compared according to silane coupling agent, FT-IR and TGA demonstrated that APTES, DMTS and MPS are chemically attached to the surface of the zirconia. The MPS-zirconia is dispersed as about 5 nm sized, whereas the APTES-zirconia, DTMS-zirconia are agglomerated. The MPS-zirconia/tetrahydrofuran (THF) sol at 15wt% loading shows high transmittance of 68 % at 550 cm-1 and the 50wt% surface modified-zirconia/OPPEA sol show refractive index of 1.657.

Study on CO2 Adsorption of Sepiolite Modified by Silane Coupling

2014 ◽  
Vol 941-944 ◽  
pp. 960-964
Author(s):  
Hua Li Zhang ◽  
Han Jun Wu ◽  
Zhi Quan Pan ◽  
Shu Hang Jiang
Keyword(s):  
Calcium Carbonate ◽  
Chemical Analysis ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Raw Material ◽  
Analysis Method ◽  
Surface Porosity ◽  
Weight Percentage ◽  
Silane Coupling ◽  
Ft Ir

The natural sepiolite as the main raw material, removing the quartz, calcium carbonate and other impurities through purification. The purified sepiolite was roasting activation pretreatment, in order to enhance surface porosity and reaction activity, and then was made of sepiolite composite by modifying through the use of silane coupling agent. The samples were characterized by XRD、SEM、BET、FT-IR and other chemical analysis method. The weight percentage of CO2 which were adsorbed by the modified sepiolite increased from 4% to 14.61%.

Surface Hydrophobic Modification of T-ZnOw with Silane Coupling Agent

2013 ◽  
Vol 634-638 ◽  
pp. 3048-3051
Author(s):  
Zhong Yuan Wu ◽  
Liang Hu ◽  
Jia Xi Chen
Keyword(s):  
Contact Angle ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Liquid Paraffin ◽  
Distilled Water ◽  
Hydrophobic Modification ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
Ft Ir ◽  
Settling Rates

Surface hydrophobic modification of T-ZnOw was experimented with silane coupling agent KH-570(gamma-(methylpropyl acyloxy)trimethoxysilane). It was shown by FT-IR that the whiskers was modified by silane coupling agents molecular compounded with the Zn-OH of whiskers. The effect of grafted modification with KH570 on hydrophobicity of T-ZnOw was characterized with dispersion stability test in an organic solvent and measuring the contact angle between the whiskers on distilled water. The results showed that surface treatment of T-ZnOw with KH570 improves hydrophobicity of whiskers simultaneously, and the modified whiskers have much slower settling rates than the pristine whiskers in the liquid paraffin. The contact angle between the modified whiskers with distilled water is 137.75 degrees, which is a significant increase.

The Effect of Silane Coupling Agent and Fiber on Microencapsulated Paraffin Insulation Mortar

2011 ◽  
Vol 71-78 ◽  
pp. 3687-3690
Author(s):  
Shu Lian Chen ◽  
Hua Yan ◽  
Jian Zhang
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Polypropylene Fiber ◽  
Coupling Agents ◽  
Silane Coupling Agents ◽  
Silane Coupling ◽  
And Performance

This paper mainly deals with the preparation and performance of microencapsulated paraffin insulation mortar. Silane coupling agents are used to modify the surface of the microencapsulated paraffin, and fibers are introduced to solve the cracking of microencapsulated paraffin insulation mortar. Research has been carried out on the effect of the type and dosage of silane coupling agents and fibers on the performance of insulation mortar, the result of which shows that KH550 and polypropylene fiber are of good performance and that their optimum dosages are 13% and 0.3% respectively, the dosage was referred to as the percentage according to the weight of cement.

Study in Surface Modification of Silica in Silicone Rubber

2012 ◽  
Vol 496 ◽  
pp. 34-37 ◽  
Author(s):  
Jie Sheng Liu ◽  
Dong Lai Li ◽  
Jun Yu ◽  
Zong Wang Zhang
Keyword(s):  
Silicone Rubber ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Silica Filler ◽  
Bound Rubber ◽  
Silane Coupling ◽  
Unmodified Silica ◽  
Ft Ir ◽  
Surface Modified ◽  
Agent Treatment

Silica fillers are well known to improve the mechanical properties of elastomers.Nevertheless, the silica filler particles tend to aggregate and affect the properties of the elastomer. In the present study, the silica filler was modified by silane coupling agent (A-151) in order to improve the dispersion of the filler in silicone rubber. The composites samples added with surface treated silica filler was characterized by FT-IR, bound rubber, and fluorescent microscope with that reinforced by the unmodified filler as a comparison. FT-IR results evidences the successful surface modified by silane coupling agent. Bound rubber contents of the origin silica filler are much lower than that of the silica filler with the silane coupling agent treatment. The modified silica-filled shows a better dispersion than that of the origin silica filler and the agglomeration of filler occurs in the unmodified silica-filler compounds.

Preparation of Nano-Al2O3-Coated ZrO2 Modified by Silane Coupling Agent

2010 ◽  
Vol 152-153 ◽  
pp. 648-652
Author(s):  
Ran Ran Tian ◽  
Zhou Fa Zhou ◽  
Shu Mei Wang ◽  
Xiao Chun Dai ◽  
Chun Rong Wang ◽  
...  
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Deposition Method ◽  
Al2o3 Coating ◽  
Composite Powders ◽  
Al2o3 Layer ◽  
Pure Zirconia ◽  
Silane Coupling ◽  
Ft Ir ◽  
Amorphous Al2o3

Core-shell nano-Al2O3-coated ZrO2 materials were prepared via a liquid co-deposition method using ZrO2 as cores. Surface of ZrO2 was modified by silane coupling agent. The mechanism of A-151[CH2=CH-Si-(OC2H5)3] was studied under the condition of HAc. The composite powders were characterized by FT-IR, TEM, EDS and SEM. TEM observation confirmed that amorphous Al2O3 layer deposited on the surface of ZrO2 and the thickness of the Al2O3 coating ranged from 5 to 10 nm. After sintered at 1650°C for 10 h, the size distribution narrowed down and the compactness of composite sintered body was better in comparison with pure zirconia.

Study on CO2 Adsorption of Halloysite Modified by Silane Coupling

2014 ◽  
Vol 989-994 ◽  
pp. 441-445
Author(s):  
Hua Li Zhang ◽  
Xiao Ying Lai ◽  
Han Jun Wu
Keyword(s):  
Chemical Analysis ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Raw Material ◽  
Analysis Method ◽  
Surface Porosity ◽  
Weight Percentage ◽  
Silane Coupling ◽  
Ft Ir

The natural halloysite as the main raw material, removing the kaolinite, the quartz, feldspar and other impurities through purification. The purified halloysite was roasting activation pretreatment, in order to enhance surface porosity and reaction activity, and then was made of halloysite composite by modifying through the use of silane coupling agent. The samples were characterized by XRD、FESEM、BET、FT-IR and other chemical analysis method. The weight percentage of CO2 which were adsorbed by the modified halloysite increased from 3.13% to 13.92%.

The Effect of Nanoparticles Modification on PLA/Nano-ZnO Composite

2013 ◽  
Vol 420 ◽  
pp. 230-233 ◽  
Author(s):  
Li Bo Ding ◽  
Jiang Rui ◽  
Jun Tao Li
Keyword(s):  
Mechanical Properties ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Nano Zno ◽  
Crystallization Properties ◽  
Silane Coupling ◽  
Ft Ir ◽  
Properties Of Composites

Prepared PLA/nanoZnO composite with nanoZnO treated by silane coupling agent KH550 and titanium ester NDZ-201. Thought mechanical properties testingfourier transform infrared (FT-IR) spectroscopyPOM to study the mechanical properties and crystallization properties of composites. The results show that the mechanical properties of composite were increased and reach the best with 2% coupling agent;spherocrystal size reduced,crystalline rate and crystallinity enhanced,and the effect of titanium ester is more obvious.

Sign in / Sign up

Export Citation Format

Share Document