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Preparation method of bamboo liquid-collagen polypeptide composite adhesive

A composite adhesive and collagen polypeptide technology, which is applied in the field of wood adhesives, can solve the problems of weak binding force between protein molecules, increased production costs of reinforcing agents, and low mechanical properties, so as to achieve low prices, reduce production costs, and use less effect

Active Publication Date: 2019-03-26
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the binding force between protein molecules contained in these agricultural products is weak and the mechanical properties are low, and the consumption of agricultural products is not realistic for areas with difficult agriculture and food shortages, and the enhancers also increase production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]1) Preparation of bamboo liquid: 100 parts by weight of bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years old are washed with 100 parts by weight of hydrogen peroxide for 30 minutes at pH 3, 1% by mass, then dried and pulverized to 30 meshes to obtain bamboo powder; weigh the following components in parts by weight: 100 parts of bamboo powder, 5 parts of NaOH, and 200 parts of water, put them into an autoclave, carry out a degradation reaction for 90 minutes at 140°C and 0.35MPa, and cool down , to obtain bamboo liquid;

[0038] 2) Preparation of mixed degradation solution: shaving, trimming and drying the chrome-tanned wet-blue leather discarded by the tannery until the length is 2 mm to obtain leather shavings; take 150 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 110°C and 0.15MPa, carry out the secondary degradation reaction for 120min, cool down, and...

Embodiment 2

[0042] 1) Bamboo liquid preparation: 100 parts by weight of discarded bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years of bamboo age are washed with 3% and 80 parts by weight hydrogen peroxide for 30 minutes at a pH of 4, and then dried. Grinding to 50 meshes to obtain bamboo powder; weigh the following components in parts by weight: 100 parts of bamboo powder, 10 parts of NaOH, and 250 parts of water, put them into an autoclave, and carry out a degradation reaction for 90 minutes at 150°C and 0.5MPa. Cool down to obtain bamboo liquid;

[0043] 2) Preparation of mixed degradation solution: shaving, trimming, and drying the chrome-tanned wet-blue leather discarded by the tannery, and crushing to a length of 4 mm to obtain leather shavings; take 250 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 120°C and 0.2MPa, carry out the secondary degradation reaction for 60...

Embodiment 3

[0047] 1) Bamboo liquid preparation: 100 parts by weight of bamboo trunks, bamboo branches, bamboo leaves and bamboo shoot shells less than 2 years old are washed with 120 parts by weight of hydrogen peroxide for 30 minutes at a pH of 3, with a mass fraction of 2%, then dried and pulverized To 40 mesh, obtain bamboo powder; Weigh the following components in parts by weight: 100 parts of bamboo powder, 8 parts of NaOH, 220 parts of water, put into autoclave, carry out a degradation reaction 75min under 140 ℃, 0.4MPa condition, Cool down to obtain bamboo liquid;

[0048] 2) Preparation of mixed degradation solution: shaving, trimming, and drying the chrome-tanned wet-blue leather discarded by the tannery, and crushing to a length of 3 mm to obtain leather shavings; take 200 parts of leather shavings and add them to a high-pressure solution containing bamboo liquid Reactor, under the conditions of 115°C and 0.18MPa, carry out the secondary degradation reaction for 90 minutes, and...

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Abstract

The invention discloses a preparation method of a bamboo liquid-collagen polypeptide composite adhesive. The preparation method comprises the following steps of: step (1). putting bamboo powder into alkali liquor in a reaction kettle, and performing primary alkali thermal degradation reaction to obtain bamboo liquid; step (2). adding leather meal to the bamboo liquid in the reaction kettle, and performing secondary alkali thermal degradation reaction on the leather meal to obtain bamboo liquid-collagen mixed degradation liquid; step (3). performing mechanical filter pressing on the bamboo liquid-collagen mixed degradation liquid to collect filtrate; and step (4). adjusting the pH of the filtrate, adding a crosslinking agent and a plasticizer, stirring and reacting to obtain the bamboo liquid-collagen polypeptide composite adhesive. The preparation method of the bamboo liquid-collagen polypeptide composite adhesive utilizes biomass resources and has low production cost.

Description

technical field [0001] The invention belongs to the technical field of wood adhesives, and in particular relates to a preparation method of a bamboo liquid-collagen polypeptide composite adhesive. Background technique [0002] The use of wood adhesives in my country is large, and the market prospect is promising, especially the market demand for environmentally friendly laminates continues to increase. Among the wood adhesives of the prior art, aldehyde adhesives still account for the dominant position of wood adhesives, commonly used are urea-formaldehyde resins, phenolic resins and melamine formal resins, although the raw material prices of these wood adhesives are relatively low, However, the content of volatile formaldehyde is relatively large, which brings potential harm to people's health and causes environmental pollution. Moreover, the raw materials for the production of aldehyde adhesives all come from non-renewable resources such as petroleum. With the gradual dep...

Claims

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Application Information

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IPC IPC(8): C09J197/02C09J189/00
CPCC08L2205/05C09J189/00C09J197/02C08L89/00C08L97/02
Inventor 蒋岚邵双喜单志华仇丹
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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