Hot melt adhesive for insulating glass spacer and preparation method therefor

A hot melt adhesive for insulating glass spacer, prepared from raw materials comprising the following components:

• 1-10 parts by weight of butyl rubber;
• 25-50 parts by weight of a polyisobutylene mixture;
• 5-15 parts by weight of a tackifying resin;
• 1-15 parts by weight of a tackifier;
• 5-15 parts by weight of a polymer;
• 0.1-1 part by weight of a lubricant;
• 0.1-1 part by weight of an antioxidant;
• 15-50 parts by weight of a filler;
• 1-10 parts by weight of a water absorbent;
• 5-25 parts by weight of carbon black;
• wherein the polymer is selected from the group consisting of one or more of styrene-butadiene rubber, an amorphous α-olefin copolymer, an ethylene-vinyl acetate copolymer, polystyrene, a styrene-butadiene-styrene copolymer, a styrene-isoprene-styrene copolymer, and a styrene-polyisobutylene-styrene copolymer, the butyl rubber has a viscosity-average molecular weight of 800,000-1,500,000, the tackifier is selected from the group consisting of one or more of polyisobutylene modified by silane coupling agent, amorphous α-polyolefin modified by silane coupling agent and metallocene catalyzed vinyl copolymer modified by silane coupling agent.