Preparation method of liquid-state base film high in biomass content

Abstract

The invention belongs to the technical field of artificially synthesized polymer and natural biopolymer composite materials, and discloses a liquid-state base film high in biomass content, and a preparation method thereof, and mulch film, and greenhouses. The liquid-state base film high in biomass content is prepared from the following components in parts by weight: 10-30 parts of polyether polyurethane, 70-90 parts of a natural protein degradation product, 1-5 parts of a cross-linking agent and 500-1000 parts of water. The preparation method comprises the following steps: adding a polyether polyol and a diisocyanate into a reaction kettle to prepare a polyether-based polyurethane prepolymer emulsion; and adding a natural protein degradation product solution into the polyether-based polyurethane prepolymer emulsion at 40 DEG C to prepare the liquid-state base film high in biomass content. According to the invention, isocyanate, polyol and protein polypeptide are reacted to synthesize ahighly branched water-based polymer, and the polymer can still have the extensibility of more than or equal to 100% of the original extensibility after bearing 30-50% of biomass materials. The granular structure of soil can be improved, and the functions of moisturizing and soil moisture conservation are achieved.

Description

technical field

[0001] The invention belongs to the technical field of polymer synthesis and natural biological polymer materials, and in particular relates to a high-capacity biomass liquid base film and a preparation method thereof, a mulch film and a greenhouse. Background technique

[0002] At present, the existing technologies commonly used in the industry are as follows: as the country and society pay more attention to environmental protection issues, the white pollution caused by the use of traditional polyethylene mulch has been highly concerned, and an environmentally friendly mulch material is urgently needed to replace it. The use of traditional mulch. Natural polymer materials have always been the first choice for degradable mulch research as raw materials for the preparation of mulch. However, the mulch prepared by pure natural polymer materials has the defects of poor film-forming property, poor temperature resistance, and too fast degradation speed. In recent...

Examples

preparation example Construction

[0022] Such as figure 1 As shown, the preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0023] S101: Add polyether polyol and diisocyanate to the reaction kettle, stir and react at 60°C for 60 minutes; add appropriate amount of DMPA, react at 70°C for 120 minutes; slowly add appropriate amount of chain extender, react at 70°C for 60 minutes; cool down to 30°C, Add triethylamine dropwise for neutralization, the neutralization degree is controlled at 80% to 100%, and the neutralization time is 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a polyether-based polyurethane prepolymer emulsion;

[0024] S102: Add 70-90 parts of natural protein degradation product solution to 30-50 parts of polyether-based polyurethane prepolymer emulsion at 40°C, raise the temperature to 70°C, stir for 120 minutes, add 1-5 parts of cross-li...

Embodiment 1

[0033] The preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0034] 1) Add a certain amount of polypropylene glycol and hexamethylene diisocyanate into the reaction kettle, stir and react at 60°C for 60 minutes; add an appropriate amount of DMPA, and react for 120 minutes at 70°C; slowly add an appropriate amount of 1,4-butanediol dropwise, React at 70°C for 60 minutes; cool down to 30°C, drop triethylamine for neutralization, control the degree of neutralization to 100%, and neutralize for 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a water-based polyurethane emulsion (solid content ~30%).

[0035] 2) Add 30 parts of polyurethane emulsion at 40°C, add 70 parts of collagen degradation products and 500g of water, stir to fully dissolve the protein degradation products, raise the temperature to 70°C, continue stirrin...

Embodiment 2

[0038] The preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0039] 1) Add a certain amount of polyethylene glycol and toluene diisocyanate into the reaction kettle, stir and react at 60°C for 60 minutes; then add an appropriate amount of DMPA, and react for 120 minutes at 70°C; slowly add appropriate amount of ethylene glycol dropwise, and react for 60 minutes at 70°C Cool down to 30°C, add triethylamine dropwise for neutralization, control the degree of neutralization to 80%, and control the neutralization time to 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a water-based polyurethane emulsion (solid content ~ 30% ).

[0040] 2) Add 40 parts of polyurethane emulsion at 40°C, add 80 parts of collagen degradation product and 600 parts, stir with water to fully dissolve the protein degradation product, raise the temp...

technical field

[0001] The invention belongs to the technical field of polymer synthesis and natural biological polymer materials, and in particular relates to a high-capacity biomass liquid base film and a preparation method thereof, a mulch film and a greenhouse. Background technique

[0002] At present, the existing technologies commonly used in the industry are as follows: as the country and society pay more attention to environmental protection issues, the white pollution caused by the use of traditional polyethylene mulch has been highly concerned, and an environmentally friendly mulch material is urgently needed to replace it. The use of traditional mulch. Natural polymer materials have always been the first choice for degradable mulch research as raw materials for the preparation of mulch. However, the mulch prepared by pure natural polymer materials has the defects of poor film-forming property, poor temperature resistance, and too fast degradation speed. In recent...

Examples

preparation example Construction

[0022] Such as figure 1 As shown, the preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0023] S101: Add polyether polyol and diisocyanate to the reaction kettle, stir and react at 60°C for 60 minutes; add appropriate amount of DMPA, react at 70°C for 120 minutes; slowly add appropriate amount of chain extender, react at 70°C for 60 minutes; cool down to 30°C, Add triethylamine dropwise for neutralization, the neutralization degree is controlled at 80% to 100%, and the neutralization time is 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a polyether-based polyurethane prepolymer emulsion;

[0024] S102: Add 70-90 parts of natural protein degradation product solution to 30-50 parts of polyether-based polyurethane prepolymer emulsion at 40°C, raise the temperature to 70°C, stir for 120 minutes, add 1-5 parts of cross-li...

Embodiment 1

[0033] The preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0034] 1) Add a certain amount of polypropylene glycol and hexamethylene diisocyanate into the reaction kettle, stir and react at 60°C for 60 minutes; add an appropriate amount of DMPA, and react for 120 minutes at 70°C; slowly add an appropriate amount of 1,4-butanediol dropwise, React at 70°C for 60 minutes; cool down to 30°C, drop triethylamine for neutralization, control the degree of neutralization to 100%, and neutralize for 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a water-based polyurethane emulsion (solid content ~30%).

[0035] 2) Add 30 parts of polyurethane emulsion at 40°C, add 70 parts of collagen degradation products and 500g of water, stir to fully dissolve the protein degradation products, raise the temperature to 70°C, continue stirrin...

Embodiment 2

[0038] The preparation method of the biomass high-capacity liquid basement membrane provided by the embodiment of the present invention comprises the following steps:

[0039] 1) Add a certain amount of polyethylene glycol and toluene diisocyanate into the reaction kettle, stir and react at 60°C for 60 minutes; then add an appropriate amount of DMPA, and react for 120 minutes at 70°C; slowly add appropriate amount of ethylene glycol dropwise, and react for 60 minutes at 70°C Cool down to 30°C, add triethylamine dropwise for neutralization, control the degree of neutralization to 80%, and control the neutralization time to 30 minutes; add metered distilled water and stir and emulsify at high speed for 30 minutes to obtain a water-based polyurethane emulsion (solid content ~ 30% ).

[0040] 2) Add 40 parts of polyurethane emulsion at 40°C, add 80 parts of collagen degradation product and 600 parts, stir with water to fully dissolve the protein degradation product, raise the temp...

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