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Ultraviolet reaction hot melt adhesive composition and preparation method thereof

A technology of reaction heat and ultraviolet light, applied in the direction of adhesives, adhesive additives, non-polymer organic compound adhesives, etc., can solve the problem of single functional group types, achieve less side reactions, stable and controllable production process, and broaden the viscosity range. The effect of range

Pending Publication Date: 2022-07-01
嘉兴市海睿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The flexible segment is in a highly elastic state in the molecular chain structure of the elastomer material, which endows the elastomer material with good elasticity, toughness and low temperature flexibility, while the rigid hard segment endows the material with hardness and strength. It is widely used because of its molecular chain It contains a large number of ester groups and carbamate groups, and has strong polarity. It can also be used to make hot-melt adhesives. TPU with different structures has good properties for polyester, polyurethane, polyvinyl chloride, etc. Adhesive properties, especially in the field of clothing, are widely used, but the types of functional groups are relatively single, and it is not suitable for bonding of various materials

Method used

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  • Ultraviolet reaction hot melt adhesive composition and preparation method thereof
  • Ultraviolet reaction hot melt adhesive composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 10 parts by mass of EVA resin EV40W, 90 parts by mass of TPU resin 1160L, 0.5 part by mass of photoinitiator TPO, 0.1 part by mass of acrylic monomer SR295NS, 0.5 part by mass of functional additive MOES, and 0.5 part by mass of functional additive aliphatic polyurethane resin CN966J75NS are put into high-speed Stir in the stirred tank for about 2 hours, at which time the liquid components are fully absorbed or adhered to the granular resin to complete the premix. The premix is ​​extruded into strands in a twin-screw extruder with a set extrusion temperature of 140°C, and after water cooling and air drying, it enters a 365nm LED UV tunnel furnace, and is irradiated at 10000mj / cm2. grain. The pellets finally produced are passed through a single-screw casting machine with a set temperature of 140°C, and a hot-melt adhesive film with a thickness of 100 microns is obtained after debugging.

Embodiment 2

[0049] 90 parts by mass of EVA resin EV250, 10 parts by mass of TPU resin 1160L, 3 parts by mass of photoinitiator MBF, 2 parts by mass of photoinitiator TPO, 4 parts by mass of acrylic monomer SR285, and 3 parts by mass of functional additive MOES are put into a high-speed stirring tank Stir in medium for about 2 hours, at which time the liquid components are fully absorbed or adhered to the granular resin to complete the premix. The premix is ​​extruded into strands in a twin-screw extruder with a set extrusion temperature of 140°C, and after water cooling and air drying, it enters a 365nm LED UV tunnel furnace, and is irradiated at 10000mj / cm2. grain. The pellets finally produced are passed through a single-screw casting machine with a set temperature of 140°C, and a hot-melt adhesive film with a thickness of 100 microns is obtained after debugging.

Embodiment 3

[0051] 60 mass parts EVA resin EV550, 40 mass parts TPU resin 1160L, 1.5 mass parts photoinitiator MBF, 1.5 mass parts photoinitiator TPO, 2 mass parts photoinitiator accelerator EDB, 2 mass parts acrylic monomer SR285, 0.5 mass parts Part by mass of acrylic monomer SR295, 0.8 part by mass of functional additive MOES, 0.5 part by mass of functional additive aliphatic polyurethane resin CN966J75NS, put into a high-speed stirring tank and stirred for about 2 hours, at which time the liquid component is fully absorbed or adhered to the granular resin, Complete the premix. The premix is ​​extruded into strands in a twin-screw extruder with a set extrusion temperature of 140°C, and after water cooling and air drying, it enters a 365nm LED UV tunnel furnace, and is irradiated at 10000mj / cm2. grain. The pellets finally produced are passed through a single-screw casting machine with a set temperature of 140°C, and a hot-melt adhesive film with a thickness of 100 microns is obtained a...

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Abstract

The invention relates to the field of adhesives, in particular to an ultraviolet reaction hot-melt adhesive composition and a preparation method thereof.The ultraviolet reaction hot-melt adhesive composition is prepared by taking an ethylene-vinyl acetate elastomer EVA and a thermoplastic polyurethane elastomer TPU as main matrix resin and adding a free radical type photoinitiator, a photo-initiation accelerant, an acrylic monomer and a functional additive. Fully plasticizing by using a double-screw extruder, drawing, cooling, drying, entering a UV tunnel to carry out light curing reaction, and finally pelletizing to form hot melt adhesive particles; according to the preparation technology of the hot-melt adhesive composition provided by the invention, EVA and TPU are compatibilized by utilizing an ultraviolet curing reaction, so that the hot-melt adhesive composition has the characteristics of EVA and TPU, meanwhile, various functional groups can be introduced into a molecular chain of the composition, the bonding range of the hot-melt adhesive composition is greatly widened, and the hot-melt adhesive composition has relatively good adhesion to metal aluminum, a PVC (Polyvinyl Chloride) plate, an EVA cross-linked foaming plate and the like.

Description

technical field [0001] The invention relates to the field of medium adhesives, in particular to an ultraviolet light reactive hot-melt adhesive composition and a preparation method thereof. Background technique [0002] Ethylene-vinyl acetate copolymer (EVA) is an ethylene copolymer commonly used in the preparation of hot melt adhesives. It is obtained by copolymerizing two monomers, ethylene and vinyl acetate under high temperature and high pressure. Excellent flexibility, good adhesion, and better adhesion adaptability after modification. [0003] CN201310089748.9 mentioned "an EVA encapsulation film that resists potential potential-induced decay of photovoltaic modules", which is a latent initiation by mixing peroxide initiator and silane coupling agent into EVA resin, and during the lamination process Crosslinking occurs in the middle and the silane is bonded to the adherend, which has good adhesion, but this method requires a long reaction time, which should be suitabl...

Claims

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Application Information

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IPC IPC(8): C09J4/06C09J4/02C09J11/06C09J11/08
CPCC09J4/06C09J11/06C09J11/08
Inventor 李伟博余鹏林炎群
Owner 嘉兴市海睿新材料有限公司
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