Silibase is one of the leading & professional manufacturers specialized in producing all kinds of SILICONE BASED new materials.
Silibase technique team always focus on quality first and insist on developing new products.
Silibase people will serve you the best before and after sale.
Jun 8, 2023
As an adhesion promoter and coupling agent for solvent based and water-based coatings, functional organosilicon has been widely used in the coatings industry. These functional silicone monomers are directly added to acrylate polymer lotion as additives, and the resulting silane based emulsion film has good scratch resistance, abrasion resistance, solvent resistance, acid and alkali resistance, and has good adhesion to different substrates; In addition, adding crosslinking agent or coupling agent that can inhibit the migration of polysiloxane surface to the lotion blend system can also improve the compatibility.
For bulk blending, 5 parts of high relative molecular weight long chain sintered silicone oil Me core O (MeC, 2H2 core O) with a viscosity of llOOrnPa • s (25 ° C) were used as compatibilizers, and SiMe3 was added to a composite adhesive composed of 70 parts (mass parts, the same below) of polyacrylate and 30 parts of HO (MeV core O) with an average polymerization degree of 5000. Additionally, 30 parts of white carbon black, 40 parts of diatomaceous earth, 5 parts of ZnO, and 1 part of stearic acid were added Mix 1 part of chichichiro type antioxidant and 5.5 parts of 40% dikuloxy peroxide, knead well to form silica gel. Place in the mold at 160 ° C and 19 Cure at 6MPa for 20 minutes to prepare a 2mm thick test piece, and then cure it again at 150 ° C for 4 hours. The initial tensile strength is 6 After aging at 180 ° C for 70 hours at 47 MPa, the tensile strength increased to 9 8MPa; Under the same conditions, the tensile strength of the control rubber test piece without compatibilizer is only 4 7MPa (150 ° C, vulcanization for 4h), 9 61MPa (180 ° C, aging for 70h). It can be seen that using long-chain alkyl silicone oil as a compatibilizer can not only improve the compatibility between polysiloxane and polyacrylate, but also effectively improve the physical and mechanical properties of vulcanized rubber.
The physical blending method, also known as the cold splicing method, is one of the effective methods to improve the performance of acrylic esters by utilizing the synergistic or complementary effects between each component. The solubility parameter of polydimethylsiloxane is 1.56Xl0 (JI) l/2, and the Mori value of polyacrylate is in Cl 8 2 1) X 10 Jim spoons with a range of 1/2 belong to a typical incompatible system. Therefore, simple physical blending of the two can easily result in phase separation. The use of compatibilizers can improve the compatibility between the two and achieve good blending of polysiloxane and polyacrylate systems. The blending forms of organic silicon and polyacrylate include: bulk blending, organic silicon as an auxiliary and acrylic lotion blending, organic silicon polymer lotion and acrylic polymer lotion blending.
Our main products are Silicone Resin for Mica Insulation Materials，Silicone Resin for Motor，Silicone Resin for transformer coils，Silione oil,Silicone Resin for H-class motors，Silicone Resin for motor coil wrapping，Silicone Resin Elastomer Suspension.