High-adhesion hot melt adhesive for aluminum-plastic panel and preparation method thereof

Abstract

The invention relates to the technical field of adhesives, in particular to a high-adhesion hot melt adhesive for an aluminum-plastic panel and a preparation method thereof. The high-adhesion hot melt adhesive is prepared from the following raw materials in parts by weight: 10 to 25 parts of maleic anhydride grafted polyethylene, 15 to 35 parts of polyethylene resin, 5 to 10 parts of ethylene-octylene copolymer, 5 to 10 parts of flame retardant, 5 to 10 parts of non-alkaline metal oxide flame retardant aid, 0.1 to 2 parts of antioxidant, 0.1 to 1 part of ultraviolet absorbent and 0.1 to 1 part of antibacterial agent. According to the high-adhesion hot melt adhesive for the aluminum-plastic panel and the preparation method thereof, the high-adhesion hot melt adhesive for the aluminum-plastic panel has high flame retardance under the condition of high adhesion strength through specific raw materials, proportions and a preparation process, excellent adhesion durability can be kept in the actual outdoor use process, and the high-adhesion hot melt adhesive has ultra-long service life.

Description

technical field

[0001] The invention relates to the technical field of adhesives, in particular to a high-adhesive hot melt adhesive for aluminum-plastic panels and a preparation method thereof. Background technique

[0002] Aluminum-plastic composite panel (hereinafter referred to as aluminum-plastic panel) refers to a multi-layer composite panel with plastic as the core layer (usually polyethylene material) and aluminum on both sides. The plastic core and aluminum are bonded by hot-melt adhesive film. The surface of the product is covered with a decorative and protective coating or film as the decorative surface of the product. Aluminum-plastic panels are widely used because of their light weight and high strength.

[0003] At present, the modification method commonly used in the market is to modify general-purpose plastic polyolefins with polar substances with unsaturated groups such as maleic anhydride, so that polyolefins maintain the original good compatibility with po...

Examples

preparation example Construction

[0051] In some preferred embodiments, the preparation method of the high-adhesive hot melt adhesive comprises the following steps:

[0052] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0053] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the flame-retardant hot-melt adhesive.

[0054] In some preferred embodiments, the maleic anhydride-grafted polyethylene in Step 1 is the maleic anhydride-grafted polyethylene that has been treated in a vacuum oven at 100°C for 2 hours or more.

[0055] During the reaction process of polyethylene melt-grafting maleic anhydride, it is generally believed that maleic anhydride will not undergo homopolymerization, so there are grafted anhydrides and a small amount of fr...

Embodiment 1

[0059] This embodiment provides a method for preparing a high-adhesive hot-melt adhesive for aluminum-plastic panels. The raw materials for preparing the high-adhesive hot-melt adhesive include: 20 parts of maleic anhydride grafted polyethylene, polyethylene 30 parts of resin, 5-10 parts of ethylene-octene copolymer, 10 parts of flame retardant, 6 parts of non-alkaline metal oxide auxiliary flame retardant, 0.5 part of antioxidant, 0.1 part of ultraviolet absorber, 0.1 part of antibacterial agent, The preparation method of the high-adhesive hot-melt adhesive comprises the following steps:

[0060] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0061] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the f...

Embodiment 2

[0071] This embodiment provides a method for preparing a high-adhesive hot-melt adhesive for aluminum-plastic panels. The raw materials for preparing the high-adhesive hot-melt adhesive include: 20 parts of maleic anhydride grafted polyethylene, polyethylene 30 parts of resin, 5-10 parts of ethylene-octene copolymer, 10 parts of flame retardant, 6 parts of non-alkaline metal oxide auxiliary flame retardant, 0.5 part of antioxidant, 0.1 part of ultraviolet absorber, 0.1 part of antibacterial agent, The preparation method of the high-adhesive hot-melt adhesive comprises the following steps:

[0072] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0073] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the f...

technical field

[0001] The invention relates to the technical field of adhesives, in particular to a high-adhesive hot melt adhesive for aluminum-plastic panels and a preparation method thereof. Background technique

[0002] Aluminum-plastic composite panel (hereinafter referred to as aluminum-plastic panel) refers to a multi-layer composite panel with plastic as the core layer (usually polyethylene material) and aluminum on both sides. The plastic core and aluminum are bonded by hot-melt adhesive film. The surface of the product is covered with a decorative and protective coating or film as the decorative surface of the product. Aluminum-plastic panels are widely used because of their light weight and high strength.

[0003] At present, the modification method commonly used in the market is to modify general-purpose plastic polyolefins with polar substances with unsaturated groups such as maleic anhydride, so that polyolefins maintain the original good compatibility with po...

Examples

preparation example Construction

[0051] In some preferred embodiments, the preparation method of the high-adhesive hot melt adhesive comprises the following steps:

[0052] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0053] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the flame-retardant hot-melt adhesive.

[0054] In some preferred embodiments, the maleic anhydride-grafted polyethylene in Step 1 is the maleic anhydride-grafted polyethylene that has been treated in a vacuum oven at 100°C for 2 hours or more.

[0055] During the reaction process of polyethylene melt-grafting maleic anhydride, it is generally believed that maleic anhydride will not undergo homopolymerization, so there are grafted anhydrides and a small amount of fr...

Embodiment 1

[0059] This embodiment provides a method for preparing a high-adhesive hot-melt adhesive for aluminum-plastic panels. The raw materials for preparing the high-adhesive hot-melt adhesive include: 20 parts of maleic anhydride grafted polyethylene, polyethylene 30 parts of resin, 5-10 parts of ethylene-octene copolymer, 10 parts of flame retardant, 6 parts of non-alkaline metal oxide auxiliary flame retardant, 0.5 part of antioxidant, 0.1 part of ultraviolet absorber, 0.1 part of antibacterial agent, The preparation method of the high-adhesive hot-melt adhesive comprises the following steps:

[0060] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0061] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the f...

Embodiment 2

[0071] This embodiment provides a method for preparing a high-adhesive hot-melt adhesive for aluminum-plastic panels. The raw materials for preparing the high-adhesive hot-melt adhesive include: 20 parts of maleic anhydride grafted polyethylene, polyethylene 30 parts of resin, 5-10 parts of ethylene-octene copolymer, 10 parts of flame retardant, 6 parts of non-alkaline metal oxide auxiliary flame retardant, 0.5 part of antioxidant, 0.1 part of ultraviolet absorber, 0.1 part of antibacterial agent, The preparation method of the high-adhesive hot-melt adhesive comprises the following steps:

[0072] Step 1: Put the maleic anhydride grafted polyethylene, polyethylene resin, ethylene-octene copolymer, flame retardant, non-alkaline metal oxide auxiliary flame retardant, antioxidant, ultraviolet absorber, and antibacterial agent into the Mix in a high-speed mixer.

[0073] Step 2: Melt and extrude the mixture obtained in Step 1 in a twin-screw extruder and pelletize to obtain the f...