A fabrication method and application of topological elastomers with highly branched structures, low modulus and high elasticity. The topological elastomers comprise dendritic macromolecules. The fabrication method includes direct crosslinking, post-crosslinking, grafting, and copolymerization. The performance of the elastomer can be easily tuned via changing the topology of the polymer network. The breakthrough of this invention lies in that these topological elastomers with highly branched structures are having low modulus and high elasticity, which would expand its application in the field of elastomer. Notably, the variety of topological elastomers, the versatility of curing chemistries, the availability of a wide variety of monomers, and the various polymerization methods are enabling the fabrication of topological elastomers with feasibility and efficiency.

A fabrication method and application of topological elastomers with highly branched structures, low modulus and high elasticity. The topological elastomers comprise dendritic macromolecules. The fabrication method includes direct crosslinking, post-crosslinking, grafting, and copolymerization. The performance of the elastomer can be easily tuned via changing the topology of the polymer network. The breakthrough of this invention lies in that these topological elastomers with highly branched structures are having low modulus and high elasticity, which would expand its application in the field of elastomer. Notably, the variety of topological elastomers, the versatility of curing chemistries, the availability of a wide variety of monomers, and the various polymerization methods are enabling the fabrication of topological elastomers with feasibility and efficiency.

Disclosed in the present disclosure are a quantum dot dispersed resin molded body, a quantum dot dispersed colloid, and a light emitting device. The quantum dot dispersed resin molded body includes quantum dots dispersed in an acrylate polymer, at least a portion of repeating units of the acrylate polymer comprise a C═C double bond, and the degree of polymerization n of the repeating units is greater than or equal to 2, the quantum dot dispersed resin molded body is formed by cross-linking and curing the quantum dot dispersed colloid.

Disclosed in the present disclosure are a quantum dot dispersed resin molded body, a quantum dot dispersed colloid, and a light emitting device. The quantum dot dispersed resin molded body includes quantum dots dispersed in an acrylate polymer, at least a portion of repeating units of the acrylate polymer comprise a C═C double bond, and the degree of polymerization n of the repeating units is greater than or equal to 2, the quantum dot dispersed resin molded body is formed by cross-linking and curing the quantum dot dispersed colloid.

Provided herein according to some embodiments is a dual cure additive manufacturing resin, comprising: (i) a light polymerizable component, (ii) a photoinitiator, (iii) a heat polymerizable component, and (iv) a non-reactive diluent, which resin is useful for the production of three-dimensional objects by additive manufacturing. Methods of using the same are also provided.

Provided herein according to some embodiments is a dual cure additive manufacturing resin, comprising: (i) a light polymerizable component, (ii) a photoinitiator, (iii) a heat polymerizable component, and (iv) a non-reactive diluent, which resin is useful for the production of three-dimensional objects by additive manufacturing. Methods of using the same are also provided.

A dark-colored system photopolymerization composition, comprising: 20-80 phr of photopolymerizable prepolymer, 5-60 phr of photopolymerizable monomer, 0.2-8 phr of photoinitiator, and 0.1-5 phr of melanin, 0.05-5 phr of upconversion materials. The composition can construct photopolymerization under near-infrared irradiation. The dark pigment can avoid the strong absorption of near-infrared light, and the upconversion material can absorb near-infrared light with good penetrating ability and emit ultraviolet or visible light to induce the decomposition of free radicals or ionic photoinitiators in the composition. Then produced active species realize the photopolymerization of dark-colored compositions. The invention increases the depth of photopolymerization of dark-colored compositions and improves the mechanical properties of the polymer, that will broaden application fields of photopolymerization materials.

The present invention is a composite stretchable film including: a surface film which is a cured product of a polyurethane 1 containing a copolymer of one or more of units “a1” to “a4” and silicone-pendant type urethane units “b1” and/or “b2” represented by the following general formula (1); and an inner film which is a cured product of a polyurethane 2 containing a unit “c” having polyether and urethane bonds represented by the following general formula (2), on which the surface film is laminated. The present invention provides a stretchable film that has excellent stretchability and strength, with the film surface having excellent water repellency, and a method for forming the same. ##STR00001##

To suppress peeling off of a polymer coating in a polymer member formed to have the polymer coating provided on a surface of a polymer shaped object, performed are: a curing step of causing a curable composition to be cured by energy rays to prepare the polymer shaped object; a coating step of forming the polymer coating on the polymer shaped object; and a post-curing step of irradiating the polymer shaped object with the energy rays after the coating step, wherein, in the curing step, the polymer shaped object in which a reactive functional group is left is prepared.

A fabrication method and application of topological elastomers with highly branched structures, low modulus and high elasticity. The topological elastomers comprise dendritic macromolecules. The fabrication method includes direct crosslinking, post-crosslinking, grafting, and copolymerization. The performance of the elastomer can be easily tuned via changing the topology of the polymer network. The breakthrough of this invention lies in that these topological elastomers with highly branched structures are having low modulus and high elasticity, which would expand its application in the field of elastomer. Notably, the variety of topological elastomers, the versatility of curing chemistries, the availability of a wide variety of monomers, and the various polymerization methods are enabling the fabrication of topological elastomers with feasibility and efficiency.