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Preparation method of soybean meal polyurethane foam

A technology of foamed plastics and polyurethane, which is applied in the field of preparation of bio-based degradable polyurethane foamed plastics, can solve the problems of high cost of polyurethane foamed plastics, low added value of soybean meal-based products, and low utilization rate of soybean meal, so as to achieve low raw material cost and low cost Low, wide-source effects

Inactive Publication Date: 2011-11-30
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a preparation method of soybean meal polyurethane foam to solve the problems of high cost, non-degradable, low soybean meal utilization and low added value of soybean meal-based products in the existing polyurethane foam

Method used

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  • Preparation method of soybean meal polyurethane foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Add 60g of soybean meal and 60g of polypropylene glycol into container A, stir for 30min, and mix well; add 0.6g of stannous octoate, 0.4g of triethylamine, 2g of silicone oil, 1g of trimethyl phosphate, and 0.5 g, continue to stir for 30min to make it evenly mixed.

[0034] 2) Weigh 20g of toluene diisocyanate and 10g of diphenylmethane diisocyanate in container B, stir well, quickly add to container A under high-speed stirring, then add 2g of water, stir at 3000 rpm for 6s, and quickly pour into the pre-prepared Foaming is carried out in a mold, and the soybean meal polyurethane foam is obtained after being solidified and molded after being placed for 30 minutes.

Embodiment 2

[0036] 1) Add 60g of soybean meal and 72g of polyethylene glycol-40072g into container A, stir for 10min to make it fully mixed; add 0.5g of triethylenediamine, 0.8g of dibutyltin dilaurate, 2g of silicone oil, methylphosphonic acid Dimethyl ester 1g, continue to stir for 30min, make it fully mix evenly.

[0037] 2) Weigh 52g of polymethylene polyphenyl polyisocyanate in container B, quickly add it into container A under high-speed stirring, then add 1.2g of water, stir at 3000 rpm for 5s, and quickly pour it into the pre-prepared mold for Foaming, standing for 20 minutes to solidify and form, the soybean meal polyurethane foam is obtained.

Embodiment 3

[0039] 1) Add 60g of soybean meal and 90g of polyethylene glycol-400 to container A, stir for 30min to make it fully mixed; add 0.4g of triethylenediamine, 0.8g of dibutyltin dilaurate, 2g of silicone oil, tris(2- Chloroethyl) phosphate 1g, aluminum hydroxide 0.5g, continue to stir for 30min, make it fully mix evenly.

[0040] 2) Weigh 50g of polymethylene polyphenyl polyisocyanate in container B, quickly add it into container A under high-speed stirring, then add 1.2g of water, 1g of cyclopentane, stir at 3000 rpm for 5s, and quickly pour into the pre- Foaming is carried out in the prepared mold, and the soybean meal polyurethane foam is obtained after being solidified and molded after standing for 30 minutes.

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Abstract

A preparation method of soybean meal polyurethane foam, the main steps are: 1) adding soybean meal and polyol and stirring and mixing evenly; adding catalyst, foam stabilizer and flame retardant, and continuing to stir; 2) adding to the product of step 1 while stirring The isocyanate and foaming agent are poured into the mold for foaming, and after curing and molding, soybean meal polyurethane foam is obtained. The present invention uses soybean meal as a raw material, and through optimization of raw material formula and foaming process, a soft foam plastic with soybean meal content > 30% (based on the total amount), tensile strength > 250KPa, and elongation at break > 150% is prepared And compressive strength > 400kPa, core density is 50 ~ 60kg / m3 rigid foam, can be used in cushioning packaging, building heat insulation and other fields. The preparation process of the foam is simple, low in cost and biodegradable, which provides a new way for resource utilization of soybean meal.

Description

technical field [0001] The invention relates to a preparation method of bio-based degradable polyurethane foam, in particular to a preparation method of using soybean meal to prepare low-cost polyurethane foam for cushioning packaging. Background technique [0002] Polyurethane material is a kind of polymer material with excellent performance, which is widely used in light industry, textile, medical and other fields, and has become one of the world's six major synthetic polymer materials. The most important thing in polyurethane products is polyurethane foam, which has excellent physical and mechanical properties, acoustic properties, electrical properties and chemical resistance. , Variety and other adjustment formula combinations, to produce end products with various properties and uses, so it is widely used. my country's polyurethane foam industry has been developed for more than 40 years, and the current annual output is 4 million tons, accounting for more than 60% of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/64C08K5/521C08K3/22C08K5/5333C08K5/06C08K5/01C08G101/00
Inventor 康宁张新志穆有炳杨雪岗万晓波张英伟张中一
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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