Study On Bonding Properties Of Interface Modified Stainless Steel/polyolefin Composite Tape For Optical Fiber

The use of metal-plastic composite tapes for communication cable cables as a protective layer for optical cables has a direct impact on the service life of optical cables.Due to China's vast size,cable cables need to be used in a variety of harsh environments.Stainless steel has excellent mechanical properties and corrosion resistance.Performance and lower price have become the first choice for the preparation of composite metal substrates.However,stainless steel is difficult to be bonded by a commonly used adhesive resin such as ethylene vinyl acetate(EVA),ethylene acrylic acid copolymer(EAA),linear low density polyethylene(LLDPE).In particular,the peeling strength of the stainless steel plastic composite tape after soaking water is very low,and it is difficult to meet the industry standard,which affects the development of the cable optical cable industry.In order to improve the bonding strength between the stainless steel and the bonding resin,the peel strength is increased.This study did the following work:The EAA/LLDPE modified film was obtained and analyzed from the dynamic rheological behavior.When the mass ratio of EAA/LLDPE was 60:40 and 80:20,respectively,the Cole-Cole diagram showed a perfect semicircle with different temperatures.The lower Han curve is superimposed to form a main curve,indicating that EAA has good compatibility with LLDPE at this blend ratio;tensile strength and elongation at break of EAA/LLDPE(60:40)compared with pure EAA The long-term rate increased from 18.7 MPa and 763%to 20.1 MPa and 984%respectively;when the EAA content was 60%,the peel strength before and after the stainless steel-plastic composite zone reached the maximum,which was 12.73 N/cm and 3.18 N/cm,respectively;EAA/LLDPE(60:40)after compounding the surface of 304 stainless steel with aminosilane coupling agent(A-1110)and methacryloxysilane coupling agent(MEMO)(7:3 V:V)The peel strength after bonding as a bonding film and modified stainless steel reached 9.37 N/cm;X-ray photoelectron spectroscopy(XPS)and Fourier infrared spectroscopy(FTIR)analysis showed that A-1110 and MEMO acted as“bridges”.The adhesive film and stainless steel are closely linked;the bonding is observed by scanning electron microscopy(SEM)Grease release surface morphology,and found a smooth peeled surface becomes progressively rough,indicating that the peel strength gradually increases.A blend of EAA/LLDPE/C₅-g-MAH and EAA/LLDPE/C₉-g-MAH was prepared.The mechanical properties test found that when the C₅-g-MAH was 50 phr,compared with the EAA/LLDPE blend,The tensile strength and elongation at break of the blend EAA/LLDPE/C₅-g-MAH decreased from 19.2 MPa to 14.1 MPa and 875%,to 510.2%respectively,When C₉-g-MAH is 50 phr,the tensile strength and elongation at break of EAA/LLDPE/C₅-g-MAH are reduced from 19.2 MPa to 12.3 MPa and 875%,to 302%respectively.When C5-g-MAH and C9-g-MAH were 30 phr and 20 phr,respectively,the peel strength before and after soaking water reached the maximum,which was 28.6N/cm and 24.4 N/cm before soaking,after soaking 15.2N/cm and 11.78N/cm;the rheological results show that the complex viscosity of EAA/LLDPE/C₅-g-MAH decreases after the addition of C₅-g-MAH,indicating that the flow properties of the blended film are better in the molten state.And the polar bonding sites increase,the synergistic increase of flow performance and polarity action points increases the peel strength;the storage modulus of EAA/LLDPE/C₅-g-MAH decreases,indicating that the blend has a better compatibility;DSC test results show that compared with EAA/LLDPE,the melting temperature of EAA and LLDPE in EAA/LLDPE/C₅-g-MAH₃₀ shifts to the low temperature direction also indicates that the blend has good compatibility.