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Preparation method of bean pulp polyurethane foam plastics

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: 2010-05-12
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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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-400 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, and methylphosphine Acetate 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 into container A, stir for 30min to make it fully mixed; add 0.4g of triethylenediamine, 0.8g of dibutyltin dilaurate, 2g of silicone oil, tri(2 - Chloroethyl) phosphate 1g, aluminum hydroxide 0.5g, continue to stir for 30min, make it fully mix.

[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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PUM

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Abstract

The invention relates to a preparation method of bean pulp polyurethane foam plastics, which comprises the following main steps of: 1. adding bean pulp and polylol, stirring, and uniformly mixing; adding a catalyst, a foam stabilizer and a flame retardant, and continuously stirring; 2. adding isocyanate and a foaming agent into the product in the step 1 under stirring, pouring the mixture in a mould for foaming, and obtaining the bean pulp polyurethane foam plastics after curing molding. Flexible foam plastics and rigid foam plastics are prepared by adopting the bean pulp as raw materials through optimizing a raw material formula and a foaming process, wherein the flexible foam plastics have the bean pulp content of more than 30 percent (calculated by the gross), the tensile strength of more than 250KPa and the elongation at break of more than 150 percent, the rigid foam plastics have the compressive strength of more than 400KPa and the core density of 50-60kg / m<3>, and the flexible foam plastics and the rigid foam plastics can be used in the fields of buffering packaging, building heat insulation and the like. The foam has simple preparation process, low cost and biological degradability, and a new approach for the resource utilization of the bean pulp is provided.

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 Applications(China)
IPC IPC(8): C08G18/64C08K5/521C08K3/22C08K5/5333C08K5/06C08K5/01C08G101/00
Inventor 康宁张新志穆有炳杨雪岗张中一
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI