Influence of silicone crosslinking agent on properties of polyacrylate

A silicone-modified polyacrylate miniemulsion was prepared by silicone crosslinking agent double terminated acrylamide-propyl polysiloxane(diAAp-PDMS) and acrylate monomers.The modified miniemulsion was used for pigment printing.The influences of dosage of crosslinking agent diAAp-PDMS on properties of the modified miniemulsion,modified polyacrylate film and pigment printing were studied.The results showed that with the increase of the dosage of diAAp-PDMS,the monomer conversion of miniemulsion polymerization became lower,and the agglomerate rate and the particle size of miniemulsion be came bigger.The degree of crosslinking of the modified film increased at first and decreased at last,the rich amount of PDMS on the surface of the film increased,the hydrophobicity of the film increased at first and decreased at last,the breaking tenacity of the film became lower,the breaking elongation rate of the film increased,and the work of break increased at first and decreased at last.The colour fastness to dry and wet rubbing of the pigment printed fabric increased at first and decreased at last,and the softness of the printed fabric improved.When the dosage of diAAp-PDMS was 8%,the degree of crosslinking of the film was the highest,the hydrophobicity of the film was the strongest,the work of break was the biggest,and the colour fastness to dry and wet rubbing of the pigment printed fabric could reach 4-5degree,and the handle of the printed fabric was soft.