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CN-116001367-B - Preparation method of double-component non-solvent PU elastic layer

CN116001367BCN 116001367 BCN116001367 BCN 116001367BCN-116001367-B

Abstract

The invention discloses a preparation method of a double-component non-solvent PU elastic layer, which relates to the field of court surface layer materials and comprises a bottom layer, a fabric layer, a plurality of A-component filling bags and a plurality of B-component filling bags, wherein the preparation is carried out according to the following steps of S1, adhering the A-component filling bags and the B-component filling bags between the bottom layer and the fabric layer, S2, carving frangible edges on the outer sides of the A-component filling bags and the B-component filling bags, S3, respectively filling the A-component filling bags and the B-component filling bags with the A-component filling bags and the B-component filling bags, S4, forming a plurality of pores on the bottom layer, compacting the fabric layer by using a road pressing vehicle, and further flattening the A-component filling bags and the B-component filling bags, wherein the frangible edges are crushed by pressure to enable the A-component and the B-component to be fused with each other between the bottom layer and the fabric layer to form the double-component PU elastic layer.

Inventors

  • Li Yeshuai

Assignees

  • 东莞市福斯乐环保科技有限公司

Dates

Publication Date
20260512
Application Date
20221228

Claims (6)

  1. 1. The preparation method of the two-component solvent-free PU elastic layer is characterized by comprising a bottom layer, a fabric layer, a plurality of A-component filling bags and a plurality of B-component filling bags, and is implemented and prepared according to the following steps: S1, pasting the plurality of A component filling bags and the plurality of B component filling bags between the bottom layer and the surface material layer, wherein the plurality of A component filling bags and the plurality of B component filling bags are uniformly staggered; s2, carving easy-to-break edges on the outer sides of the A component filling package and the B component filling package, wherein the easy-to-break edges are of a full circle structure, and the easy-to-break edges divide the A component filling package and the B component filling package into an upper semicircle and a lower semicircle respectively; S3, filling an A component and a B component in the A component filling packet and the B component filling packet respectively, wherein the quantity ratio of the A component filling packet to the B component filling packet is 42:65; S4, forming a plurality of pores on the bottom layer, wherein the pores are uniformly arrayed; S5, compacting the fabric layer by using a road pressing vehicle, further flattening the plurality of A component filling bags and the plurality of B component filling bags, and enabling the easily broken edges to be broken by compression to enable the A component and the B component to be mutually fused between the bottom layer and the fabric layer to form a bi-component PU elastic layer; The bottom surfaces of the upper semicircle of the A component filling package and the bottom surfaces of the upper semicircle of the B component filling package are planar structures, and the A component and the B component are respectively encapsulated in the lower semicircle of the A component filling package and the lower semicircle of the B component filling package; The bottom side shaping of precoat has a plurality of semicircle groove, a plurality of A group of packing package with the last semicircle of a plurality of B group of packing package is pasted one-to-one and is fixed in the semicircle inslot.
  2. 2. The preparation method of the two-component solvent-free PU elastic layer as claimed in claim 1, wherein the component A comprises the following components in parts by weight: 50-120 parts of polyether polyol; 50-70 parts of alkyl sulfonate; 40-80 parts of tackifier; 15-30 parts of inorganic filler; 25-40 parts of flame retardant; 10-15 parts of ground stone powder; 1-2 parts of calcium oxide; 1-2 parts of a defoaming agent; the viscosity of the component A at room temperature is 4000-600 mPas; The component B consists of the following components in parts by weight: 60-85 parts of polyisocyanate; 15-40 parts of polymer dihydric alcohol.
  3. 3. The preparation method of the two-component solvent-free PU elastic layer as claimed in claim 2, wherein the preparation method of the component A is characterized in that polyether polyol, alkyl sulfonate and tackifier are added into a reaction kettle, the temperature is raised to 60-80 ℃, the reaction kettle is stirred while vacuumizing and dehydrating, the stirring time is 5-8 hours, then inorganic filler is added, the reaction kettle is used for stirring uniformly at a high speed, the flame retardant, the millstone powder, the calcium oxide and the defoamer are continuously added during stirring, the temperature is reduced to the room temperature after the complete stirring uniformly, and the component A is prepared after the qualified discharge of the detected viscosity.
  4. 4. A process for preparing the two-component solvent-free PU elastic layer as claimed in claim 2 or 3, wherein the component B is prepared by quickly adding polyisocyanate and polymer diol into a polymerizer, slowly heating to 80 ℃, stirring and reacting for 2-3 hours under the condition of introducing dry nitrogen, and finally cooling to room temperature and discharging.
  5. 5. The method for preparing the two-component solvent-free PU elastic layer as set forth in claim 1, wherein the A-component filling package and the B-component filling package are each made of soft silica gel.
  6. 6. The method for preparing the two-component solvent-free PU elastic layer as claimed in claim 1, wherein the surface material layer is made of transparent acrylic resin.

Description

Preparation method of double-component non-solvent PU elastic layer Technical Field The invention relates to the field of court surface layer materials, in particular to a preparation method of a double-component non-solvent PU elastic layer. Background The silicon PU is a healthy professional elastic synthetic court surface layer material system which accords with the human engineering principle and meets the physical property requirement of sports, has the structural characteristics of upper hardness and lower elasticity and can be directly constructed on the basis of cement or asphalt, a buffer rebound structure is formed by single-component organosilicon modified polyurethane, and double-component modified acrylic acid is used as a wear-resistant surface layer. Is generally used as basketball court, badminton court and other sports places. For the current double-component PU elastic layer, the component A and the component B are generally fused together directly and then sold, and the existing flame-retardant heat-resistant double-component polyurethane lawn back adhesive (application number is 201910541442. X) for the artificial lawn can shorten the storage time of the elastic layer material by combining the direct double components, and needs to be used in time after production so as to avoid hardening. Therefore, it is desirable to design a formulation method that does not allow for two-component fusion at the time of use. Disclosure of Invention The invention provides a technical scheme capable of solving the problems in order to overcome the defects of the prior art. The preparation method of the double-component non-solvent PU elastic layer comprises a bottom layer, a fabric layer, a plurality of A component filling bags and a plurality of B component filling bags, and is implemented and prepared according to the following steps: S1, pasting the plurality of A component filling bags and the plurality of B component filling bags between the bottom layer and the surface material layer, wherein the plurality of A component filling bags and the plurality of B component filling bags are uniformly staggered; s2, carving easy-to-break edges on the outer sides of the A component filling package and the B component filling package, wherein the easy-to-break edges are of a full circle structure, and the easy-to-break edges divide the A component filling package and the B component filling package into an upper semicircle and a lower semicircle respectively; S3, filling an A component and a B component in the A component filling packet and the B component filling packet respectively, wherein the quantity ratio of the A component filling packet to the B component filling packet is 42:65; S4, forming a plurality of pores on the bottom layer, wherein the pores are uniformly arrayed; S5, compacting the fabric layer by using a road pressing vehicle, further flattening the plurality of A component filling bags and the plurality of B component filling bags, and enabling the A component and the B component to be mutually fused between the bottom layer and the fabric layer by being broken by pressure of the easily broken edges to form a bi-component PU elastic layer. As a further scheme of the invention, the bottom surfaces of the upper semicircle of the A component filling package and the bottom surfaces of the upper semicircle of the B component filling package are of plane structures, and the A component and the B component are respectively encapsulated in the lower semicircle of the A component filling package and the lower semicircle of the B component filling package. As a further scheme of the invention, a plurality of semicircular grooves are formed on the bottom side of the fabric layer, and the upper semicircles of the plurality of A component filling bags and the plurality of B component filling bags are stuck and fixed in the semicircular grooves in one-to-one correspondence. Compared with the prior art, the method has the beneficial effects that the quantity ratio of the A component filling package to the B component filling package is preset, after the road pressing vehicle is used for flattening, the A component filling package and the B component filling package can be outwards exploded through the breakable edges, so that the A component and the B component are mutually fused, and because the A component filling package and the B component filling package are uniformly staggered, the A component and the B component can be uniformly fused, and the elastic materials after mutual fusion can be permeated into the bottom side surface of the bottom layer through the pores, so that the terrace of a court can be firmly adhered, and the method can be stored for a long time after production is finished. Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. D