A kind of degradable polyurethane foam based on polylactic acid and its processing technology
By using branched polylactic acid-polyethylene glycol copolymer and keratin functional additives in polyurethane foam, the shortcomings of polyurethane foam in terms of processability, foamability and flame retardancy are solved, and its efficient and degradable preparation is achieved.
CN118580454BActive Publication Date: 2025-04-01JIANGSU LVYUAN NEW MATERIALS
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Patent Information
- Application Number
- CN202410525072.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2044-04-29
AI Technical Summary
Technical Problem
The existing polyurethane foams have shortcomings in terms of processability, foamability and flame retardancy, and their degradability are poor, resulting in environmental pollution problems.
Method used
By using four-arm polyethylene glycol and lactide to form a branched polylactic acid-polyethylene glycol copolymer, combined with functional additives prepared based on keratin, the mechanical properties and flame retardancy of the polyurethane foam are improved, and its degradability is improved by optimizing process conditions.
Benefits of technology
The efficient preparation of degradable polyurethane foam based on polylactic acid is achieved, which improves its foaming performance, flame retardant and mechanical properties, while ensuring good degradability.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention discloses a degradable polyurethane foam based on polylactic acid and its processing technology. The following steps are included: S1: dispersing four-arm polyethylene glycol in xylene to obtain reaction solution A; azeotropic dehydration to obtain reaction solution B; adding lactide and catalyst under nitrogen atmosphere; polycondensation reaction, washing and drying to obtain polylactic acid-polyethylene glycol copolymer; S2: adding polylactic acid-polyethylene glycol copolymer, polyether polyol, functional additive, stannous octoate, deionized water, triethylene diamine, and foam stabilizer to the reaction tank in sequence, stirring and mixing; adding isocyanate, stirring at high speed; transferring to a mold, foaming and molding, and ripening to obtain a degradable polyurethane foam. In the scheme, the prepared polyurethane foam has good degradability, flame retardancy and excellent mechanical properties.
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