CN105348839A

CN105348839A - Ecotype environmental protection material and preparation method thereof

Info

Publication number: CN105348839A
Application number: CN201510919399.8A
Authority: CN
Inventors: 曾广胜
Original assignee: Hunan University of Technology
Current assignee: Hunan University of Technology
Priority date: 2015-12-14
Filing date: 2015-12-14
Publication date: 2016-02-24
Anticipated expiration: 2035-12-14
Also published as: CN105348839B

Abstract

The invention discloses an ecotype environmental protection material and a preparation method thereof. According to the ecotype environmental protection material and the preparation method thereof, provided by the invention, aiming at the poor combination of plant fibers and plastic, a biological fermentation method is fully utilized to treat melon, fruit, vegetable fibers, then low-density polyethylene (LDPE) is taken as a main composite material, a reasonable formula is set, the methods and principles of biology, chemistry and physics are combined, and proper processing steps and parameters are adopted, so as to obtain a high-performance bio-composite material by squeezing granulation through a screw rod. The material can be processed to form various products through the ways of injection molding, extrusion, mould pressing, machining and the like, is widely used in the fields of packaging, electronics, communication, furniture, decoration, automobiles, airplanes, war industry and the like, is capable of replacing the materials of plastic, logs and the like, and has very good social benefit and economic benefit.

Description

A kind of environmental environment-friendly materials and preparation method thereof

Technical field

The present invention relates to a kind of environmental environment-friendly materials, particularly relate to a kind of biomass composite utilizing biochemical process to produce and preparation method thereof, can be used for replacing the field such as plastics, timber.

Background technology

The material used in fields such as packaging, electronic apparatus, household house ornamentation, automobile, aircraft, military projects is at present mainly based on petroleum-based plastics, and part uses log.But plastics have cannot biological degradation, and the shortcomings such as contaminate environment, meanwhile, petroleum resources are limited, do not have sustainable developability.And the use of a large amount of log, a large amount of forests will be cut down, destroy ecotope.Therefore, waste and old vegetable fibre is combined with part high molecule plastic, produce a kind of wood plastic composite of superior performance, timber and plastics can be replaced, extenuate shortage of resources, ecological damage and problem of environmental pollution.But, because the associativity between vegetable fibre and plastics is poor, the forming process of wood-plastic products difficulty, thus intensity is low, property is crisp, than the defect such as great, vegetable fibre content is low to cause the wood-plastic products on existing market to have.The present invention utilizes the techniques such as biological fermentation, chemistry and physics to combine, and produces a kind of biomass composite with high strength, good toughness, can replace plastics and timber etc.

Summary of the invention

The object of the invention is to overcome existing wood plastic composite has intensity low, property is crisp, than great, the shortcomings such as vegetable fibre content is low, make full use of biofermentation method to process gourd, fruit and vegetable fiber, then with Low Density Polyethylene (LDPE) for main matrix material, rational formula is set, by biology, chemistry, the Method And Principles such as physics combine, adopt suitable processing step and parameter, a kind of high performance biomass composite is obtained with Screw Extrusion granulation, this material can use injection moulding, extrude, mold pressing, the shaping various goods of the methods such as machining, be widely used in packaging, electronics, communication, furniture, decoration, automobile, aircraft, the fields such as military project, replace the material such as plastics and log, there is good Social and economic benef@.

Matrix material of the present invention, mainly consist of: gourd, fruit and vegetable fiber (market purchase), Low Density Polyethylene, titanate coupling agent (three Unimac 5680 isopropyl titanates), polytetrafluorethylepowder powder, silicon-dioxide, paraffin, dibutyl tin laurate, white sugar (sucrose is commercial), natural pond liquid (market purchase), stover ferment agent (commercial).Wherein the main component of stover ferment agent is: ayliao201, ayliao302, ayliao403, ayliao504 bacterial classification and enzyme product composition thereof.

Each component ratio and preparation process:

(1) getting 100 parts of (mass fraction) water ratio is 7 ~ 20%(preferably 14%) gourd, fruit and vegetable fiber, 100 ~ 200 parts of (preferably 150 parts) undiluted natural pond liquid, 200 ~ 300 parts of (preferably 250 parts) water, 3 ~ 5(preferably 4 parts) part stover ferment agent, seal after stirring in a kettle., keep normal pressure, temperature 25 ~ 50(preferably 35 DEG C), leave standstill 24 ~ 72 hours (preferably 48 hours), then vegetable fibers is taken out, 80 ~ 110 DEG C of (preferably 90 DEG C) dry moisture, water ratio remains on 5 ~ 12%(preferably 8%), then pulverize in pulverizer, sieve, make its particle diameter at 20 ~ 60 orders (preferably 40 orders), stand-by.

(2) gained fiber in 100 parts (1) is got, 2 ~ 5 parts of (preferably 3 parts) titanate coupling agents, 3 ~ 5 parts of (preferably 4 parts) polytetrafluorethylepowder powders, 2 ~ 4 parts of (preferably 3 parts) white sugar, the silicon-dioxide of 3 ~ 8 parts of (preferably 5 parts) 800 ~ 1500 orders (preferably 1100 orders), in high mixer, blended 10 ~ 30 minutes (preferably 20 minutes) are stand-by.

(3) fiber 55 ~ 80 parts (preferably 70 parts) handled well in step (2) is got, Low Density Polyethylene 20 ~ 45 parts (preferably 30 parts), 3 ~ 8 parts, paraffin (preferably 5 parts), dibutyl tin laurate 2 ~ 5 parts (preferably 3 parts), in high mixer blended 10 ~ 30 minutes (preferably 20 minutes), stand-by.

(4) material will mixed, by screw extrusion press extruding pelletization, controlling head temperature is 170 ~ 210 DEG C (preferably 190 DEG C), the preferred 3MPa of head pressure 2 ~ 5MPa(), the preferred 80r/min of screw speed 70 ~ 90r/min().

The present invention is directed to vegetable fibre and plastics are incompatible, the feature that bonding strength is low, the methods such as biological fermentation are utilized to carry out pre-treatment to vegetable fibre, increase the bonding strength of vegetable fibre and Low Density Polyethylene, then formulating of recipe is passed through, give full play to the effect of each additive, finally utilize Screw Extrusion mode, at suitable pressure, under temperature and speed, efficiently, continuous extruding pelletization, obtain a kind of high performance biomass composite, this invention material is by extruding, injection moulding, mold pressing, the shaping various goods of the modes such as machining, be widely used in packaging, electronic apparatus, furniture decoration, building, the vehicles, and the field such as military project, replace plastics or timber, there is very high Social benefit and economic benefit.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1:

(1) getting 100 parts of (mass fraction) water ratio is 14% gourd, fruit and vegetable fiber, 150 parts of undiluted natural pond liquid, 250 parts of water, 4 parts of part stover ferment agents, seal after stirring in a kettle., keep normal pressure, temperature 35 DEG C, leaves standstill 48 hours, then vegetable fibers is taken out, dry moisture at 90 DEG C, water ratio remains on 5 ~ 12%, then pulverizes in pulverizer, sieves, make its particle diameter at 40 orders, stand-by.

(5) get gained fiber in 100 parts (1), 5 parts of titanate coupling agents, 5 parts of polytetrafluorethylepowder powders, 4 parts of white sugar, 8 part of 1100 object silicon-dioxide, in high mixer blended 20 minutes stand-by.

(2) fiber 80 parts handled well in step (2) is got, Low Density Polyethylene 20 parts, 8 parts, paraffin, dibutyl tin laurate 5 parts, in high mixer blended 20 minutes, stand-by.

(3) get gained fiber in 100 parts (1), 2 parts of titanate coupling agents, 3 parts of polytetrafluorethylepowder powders, 2 parts of white sugar, 3 part of 1100 object silicon-dioxide, in high mixer blended 10 minutes stand-by.

(4) fiber 55 parts handled well in step (2) is got, Low Density Polyethylene 45 parts, 3 parts, paraffin, dibutyl tin laurate 2 parts, in high mixer blended 20 minutes, stand-by.

(5) material will mixed, by screw extrusion press extruding pelletization, controlling head temperature is 190 DEG C, head pressure 3MPa, screw speed 80r/min.

Table 1

	Tensile strength MPa	Flexural strength MPa	Tensile elongation %	Shock strength kJ/M ²
					Embodiment 1	35	33	60	27

Embodiment 2:

(2) get gained fiber in 100 parts (1), 3 parts of titanate coupling agents, 4 parts of polytetrafluorethylepowder powders, 3 parts of white sugar, 5 part of 1100 object silicon-dioxide, in high mixer blended 20 minutes stand-by.

(3) fiber 70 parts handled well in step (2) is got, Low Density Polyethylene 30 parts, 5 parts, paraffin, dibutyl tin laurate 3 parts, in high mixer blended 20 minutes, stand-by.

(4) material will mixed, by screw extrusion press extruding pelletization, controlling head temperature is 190 DEG C, head pressure 3MPa, screw speed 80r/min.

Table 2

	Tensile strength MPa	Flexural strength MPa	Tensile elongation %	Shock strength kJ/M ²
					Embodiment 2	40	38	55	35

Embodiment 3:

(2) get gained fiber in 100 parts (1), 5 parts of titanate coupling agents, 5 parts of polytetrafluorethylepowder powders, 4 parts of white sugar, 8 part of 1100 object silicon-dioxide, in high mixer blended 20 minutes stand-by.

(3) fiber 80 parts handled well in step (2) is got, Low Density Polyethylene 20 parts, 8 parts, paraffin, dibutyl tin laurate 5 parts, in high mixer blended 20 minutes, stand-by.

Table 3

	Tensile strength MPa	Flexural strength MPa	Tensile elongation %	Shock strength kJ/M ²
					Embodiment 3	32	31	45	24

Claims

1. environmental environment-friendly materials and preparation method thereof, it is characterized in that: environmental environment-friendly materials of the present invention, by gourd, fruit and vegetable fiber, Low Density Polyethylene, titanate coupling agent (three Unimac 5680 isopropyl titanates), polytetrafluorethylepowder powder, silicon-dioxide, paraffin, dibutyl tin laurate, white sugar, natural pond liquid, stover ferment agent is formed.

2. a kind of environmental environment-friendly materials as claimed in claim 1 and preparation method thereof, is characterized in that: described environmental environment-friendly materials comprise following component and preparation process:

(1) getting 100 parts of (mass fraction) water ratio is 7 ~ 20% gourd, fruit and vegetable fibers, 100 ~ 200 parts of undiluted natural pond liquid, 200 ~ 300 parts of water, 3 ~ 5 parts of stover ferment agents, seal after stirring in a kettle., keep normal pressure, temperature 25 ~ 50 DEG C, leaves standstill 24 ~ 72 hours, then vegetable fibers is taken out, 80 ~ 110 DEG C of dry moisture, water ratio remains on 5 ~ 12%, then pulverizes in pulverizer, sieves, make its particle diameter at 20 ~ 60 orders, stand-by;

(2) get gained fiber in 100 parts (1), 2 ~ 5 parts of titanate coupling agents, 3 ~ 5 parts of polytetrafluorethylepowder powders, 2 ~ 4 parts of white sugar, 3 ~ 8 part of 800 ~ 1500 object silicon-dioxide, in high mixer blended 10 ~ 30 minutes stand-by;

(3) fiber 55 ~ 80 parts handled well in step (2) is got, Low Density Polyethylene 20 ~ 45 parts, 3 ~ 8 parts, paraffin, dibutyl tin laurate 2 ~ 5 parts, in high mixer blended 10 ~ 30 minutes, stand-by;

(4) material will mixed, by screw extrusion press extruding pelletization, controlling head temperature is 170 ~ 210 DEG C, head pressure 2 ~ 5MPa, screw speed 70 ~ 90r/min.