The present application relates to a near-
infrared highly-reflective PVC material and a preparation method therefor. The near-
infrared highly-reflective PVC material comprises a base fabric layer and PVC coatings
coating both sides of the base fabric layer. Raw materials for preparing the PVC coatings comprise in parts by weight: 95 parts of PVC paste resin, 45-65 parts of
diisononyl phthalate, 1-2 parts of a stabilizer, 25-40 parts of an IR
pigment, 3-4 parts of a
flame retardant, and 1-2 parts of other auxiliaries, the IR
pigment being obtained by modifying BASF Sicopal Black L0095 with dioctyl
phthalate and EO / PO block polyether. The preparation method comprises preparation of the base fabric layer, material
coating, and curing. In the present application, the BASF Sicopal Black L0095
pigment is modified by dioctyl
phthalate and EO / PO block polyether (e.g., FTRT®500L1), thereby solving the problem of incompatibility between the pigment and a
plasticizer. The optimized formula design ensures that the
reflectivity of the material can stably reach or exceed 40%, which is particularly important to application scenarios (such as building film structures, tent houses, and military materials) in which efficient
thermal insulation and cooling performance is required.