CN105820399A - Wood and rubber composite floor used for train and preparing method thereof - Google Patents

Abstract

The invention discloses a wood and rubber composite floor used for a train. The wood and rubber composite floor is prepared from, by weight, 10-11 parts of an isocyanate tackiness agent, 0.5-0.6 part of acetone, 35-38 parts of wood shavings, 62-66 parts of waste rubber particles, 5-6 parts of lithium perchlorate, 4-5 parts of nano polytetrafluoroethylene, 5-6 parts of trifluoroethyl acrylate, 6-7 parts of dodecafluoroheptyl methacrylate, 60-70 parts of ethyl acetate, 0.4-0.5 part of dicumyl peroxide, 90-100 parts of 9-10% salpeter solution, 90-100 parts of a urea saturated solution, 0.7-0.9 part of hexafluoroacetylacetone, 1.1-1.3 parts of nano magnesium hydrate, 0.3-0.4 part of methyltin mercaptide and 1.2-1.4 parts of glass powder. The tackiness agent is modified with hexafluoroacetylacetone, nano magnesium hydrate, methyltin mercaptide and glass powder, and the prepared floor is resistant to skidding and moisture and excellent in mechanical property, flame retardance and weather resistance.

Description

A kind of train timber rubber laminated floor and preparation method thereof

Technical field

The present invention relates to rubber floor covering technical field, particularly relate to a kind of train timber rubber laminated floor and preparation thereof Method.

Background technology

Timber-rubber composite is the class functional material being the most just suggested, and has good preventing The performance such as water, anticorrosion, mothproof, antistatic, sound insulating and absorbing, damping shock absorption, heat-insulation and heat-preservation, can serve as interior decoration decoration material Material, sound-insulation and sound-absorbing material, damping shock absorption material, heat-insulating heat-preserving material, comprehensively embody efficiently the utilizing of timber, junked tire The pollution-free value recycled and improve the aspects such as forestry products added value, development prospect is boundless.But at present about timber- The research of rubber composite, also in the starting stage, not yet forms industrialization product.In order to timber-rubber composite is entered Row further investigation, by consulting substantial amounts of document, completes the design of its cork biomimetic features, with artificial forest wood, woodwork Industrial wood waste and waste tyre particle are raw material, be prepared for timber-rubber composite and on affect its performance main because of Son is studied;The quiet mechanism of timber-rubber composite is disclosed, to it quiet by the method for experimental modal analysis Application in floor has carried out exploratory study.Flooring method and performance, economic benefit are analyzed, and to floor Quiet performance test methods has done preliminary study.This research draws following main research conclusion: 1) at timber-rubber composite Cork biomimetic features in, timber is equivalent to cork cell wall substance, plays support, filling effect, mainly provides physical mechanics Performance, is the intensity unit in structure;Rubber is equivalent to the closed gas in cork lumen, plays the effect of spring-like, It it is the vibration absorption unit in structure;Adhesive is equivalent to the suberin in cork cell wall to a certain extent, primarily serves structure list Cementation between unit.2) affecting laws of timber-rubber composite performance is mainly had by preparation technology: wood/rubber mass Amount comparison material property impact is the most notable.Along with the reduction of wood/rubber quality ratio, rubber grain consumption increases, the resistance to suction of material Hydroexpansivity can strengthen, and internal bond strength reduces, and MOR and elastic modelling quantity reduce, and natural frequency declines, and damping ratio raises, Strike note reduces, and strike note improved values increases.Timber form is notable to Effect of Materials.Flat wood shavings and fiber is used to obtain Preferably physical and mechanical property, material prepared by c-type wood shavings have relatively low natural frequency and strike note, higher damping ratio and Strike note improved values.Extremely significantly (2 h water sucting thickness are swollen on the impact of timber-rubber composite physical and mechanical property for resin added Except swollen rate), the impact on vibration and acoustical behavior is the most notable.The density shadow to physical and mechanical property, vibration and acoustical behavior Ring all highly significants.The target density of timber-rubber composite can obtain the most comprehensive in the range of 0.8 ~ 1.0 g/cm3 Performance.Wood/between rubber quality ratio and resin added, density and the reciprocal action between pressing time to physical and mechanical property, shake Dynamic and acoustical behavior all has a significant impact.Therefore, when adjusting process parameter, reciprocal action should be taken into account.3) have good The preferred process parameter of good damping noise reduction performance: timber form: c-type wood shavings;Waste tyre particle particle diameter: 2 ~ 3 mm;Wood/rubber Mass ratio: 40/60;Resin added: 6%;Target density: 0.8 g/cm3;Pressing time: 4 min;Platen temperature: 140 DEG C.Use The main performance of timber-rubber composite prepared by this optimization technique is as follows: density: 0.78 g/cm3;2 h water sucting thickness are swollen Swollen rate: 3.12%;Internal bond strength: 1.1 MPa;MOR: 3.8 MPa;Elastic modelling quantity: 342 MPa;Natural frequency: 17.4 Hz;Damping ratio: 0.15;Strike note: 76.5 dB (A);Strike note improved values: 15.5 dB (A).4) timber-rubber composite Quiet mechanism: the existence of a large amount of rubber grains so that timber-rubber composite has relatively low natural frequency and higher Damping ratio.Under impact loading, owing to timber-rubber composite each order frequency spacing is less, easily produces resonance, make The function obtaining the rubber grain damping energy-absorbing in material is not fully exerted, the shock-absorbing denoising function raising that material is overall;Meanwhile, Higher damping ratio can accelerate the decay of vibration, and energy dissipates relatively big in transmittance process, reduces and dissipates with acoustic energy form Energy, play damping noise reduction effect.5) use strike note and two parameter indexs of strike note improved values to floor quietness energy It is evaluated, it is proposed that a kind of quiet performance test methods in floor free falling sphere impingement method, designs and made a set of phase The test system answered.Experiment proves, the floor of different quiet performances can be made and quantitatively commenting accurately by free falling sphere impingement method Valency, has that required test specimen is few, it is fast and convenient to test, result feature accurately.6) new with timber-rubber composite as base material Type mute floor board (WRC mute floor board), is designed by different structures, it is possible to obtain good quiet performance and physical mechanics property Energy.

But wood shavings easily absorb water, cause floor dilatancy, and wood shavings are different from the character of rubber, poor compatibility, Adhesion strength is the highest, and durability is bad, is easily damaged, and soundproof effect is general.And other aspect performances on floor also need To improve further, such as thermostability, environmental-protecting performance, antistatic behaviour, resilience, heat stability, anti-flammability, anti-radiation, tough Property, tensile strength, dimensional stability, pollution resistance, Scratch Resistance.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of train timber rubber laminated floor and Its preparation method.

The present invention is achieved by the following technical solutions:

A kind of train timber rubber laminated floor, is prepared by the raw materials in: isocyanate adhesive 10-11, third Ketone 0.5-0.6, wood wool 35-38, waste and old rubber particle 62-66, lithium perchlorate 5-6, nanometer polytetrafluoroethylcomposite 4-5, acrylic acid Trifluoro ethyl ester 5-6, dodecafluoroheptyl methacrylate 6-7, ethyl acetate 60-70, dicumyl peroxide 0.4-0.5,9-10% nitre Acid solution 90-100, urea saturated solution 90-100, hexafluoroacetylacetone 0.7-0.9, nano-sized magnesium hydroxide 1.1-1.3, mercaptan Methyl stannum 0.3-0.4, glass dust 1.2-1.4.

The preparation method of described train timber rubber laminated floor, comprises the following steps:

(1) wood wool is pulverized, dry to over dry, put in 9-10% salpeter solution, process 20-23 minute at 96-100 DEG C, mistake Filter, then soak 60-70 minute with urea saturated solution, filter, be dried, obtain swelling wood shavings；

(2) by nanometer polytetrafluoroethylcomposite, acrylic acid trifluoro ethyl ester, lithium perchlorate, dodecafluoroheptyl methacrylate, ethyl acetate Mixing, is heated to 60-70 DEG C, adds swelling wood shavings, adds dicumyl peroxide, stirring reaction 30-40 minute, is dried and goes Except ethyl acetate, obtain modified wood shavings；

(3) isocyanate adhesive is mixed homogeneously with acetone, add hexafluoroacetylacetone, nano-sized magnesium hydroxide, mercaptan first Ji Xi, glass dust mix homogeneously, obtain modified adhesive；

(4) modification wood shavings, modified adhesive are mixed homogeneously with other surplus stocks, carry out plate blank paving, then at 1.0- Carrying out precompressed 30-40s under 1.2MPa, then 140-150 DEG C, hot pressing molding in 8-9 minute under 3.5-3.8MPa, room temperature is placed 24-26 hour, then carry out sanding, to obtain final product.

The invention have the advantage that wood shavings are carried out by the present invention swelling rear dry, obtain the structure of porosity and looseness, re-use and receive Rice politef, acrylic acid trifluoro ethyl ester, dodecafluoroheptyl methacrylate are modified, in the inside of wood shavings and surface shape Become water-fast organic layer, improve toughness and the compatibility with adhesive, improve adhesion strength, improve wood shavings simultaneously Toughness, more preferably, sound-absorbing effect is more preferable, and durability is more preferable for the elasticity of the rubber composite obtained；Also use perchloric acid simultaneously Lithium, improves the electric conductivity of wood shavings, and then improves the antistatic property on floor.By using hexafluoroacetylacetone, nanometer hydrogen Adhesive is modified by magnesium oxide, thiol methyl tin, glass dust, improves the thermostability of adhesive, anti-flammability and wearability, The floor, anti-skidding, moistureproof prepared, and there is the mechanical property of excellence, fire resistance, weather resistance, it is adaptable to train floor Lay.

Detailed description of the invention

A kind of train timber rubber laminated floor, is made up of the raw material of following weight portion (kilogram): isocyanates is gluing Agent 10, acetone 0.5, wood wool 35, waste and old rubber particle 62, lithium perchlorate 5, nanometer polytetrafluoroethylcomposite 4, acrylic acid trifluoro ethyl ester 5, dodecafluoroheptyl methacrylate 6, ethyl acetate 60, dicumyl peroxide 0.4,9% salpeter solution 90, urea saturated solution 90, hexafluoroacetylacetone 0.7, nano-sized magnesium hydroxide 1.1, thiol methyl tin 0.3, glass dust 1.2.

The preparation method of described train timber rubber laminated floor, comprises the following steps:

(1) wood wool is pulverized, dry to over dry, put in 9% salpeter solution, process 20 minutes at 96 DEG C, filter, then with urinating Element saturated solution soaks 60 minutes, filters, and is dried, obtains swelling wood shavings；

(2) by nanometer polytetrafluoroethylcomposite, acrylic acid trifluoro ethyl ester, lithium perchlorate, dodecafluoroheptyl methacrylate, ethyl acetate Mixing, is heated to 60 DEG C, adds swelling wood shavings, adds dicumyl peroxide, stirring reaction 30 minutes, is dried and removes acetic acid Ethyl ester, obtains modified wood shavings；

(3) isocyanate adhesive is mixed homogeneously with acetone, add hexafluoroacetylacetone, nano-sized magnesium hydroxide, mercaptan first Ji Xi, glass dust mix homogeneously, obtain modified adhesive；

(4) modification wood shavings, modified adhesive are mixed homogeneously with other surplus stocks, carry out plate blank paving, then at 1.0MPa Under carry out precompressed 30s, then 140 DEG C, hot pressing molding in 8 minutes under 3.5MPa, room temperature is placed 24 hours, then is carried out sanding, i.e. ?.

The density on this embodiment floor is 0.84g/cm³, 2h thickness swelling rate is 1.9%, and MOR is 3.7MPa, interior bonding strength is 1.86MPa, and elastic modelling quantity is 415MPa, and strike note is 67.2dB (A), and strike note sound insulation improves Value is 18.9dB (A).

Claims (2)

1. a train timber rubber laminated floor, it is characterised in that: it is prepared by the raw materials in: isocyanate glue Stick 10-11, acetone 0.5-0.6, wood wool 35-38, waste and old rubber particle 62-66, lithium perchlorate 5-6, nanometer polytetrafluoroethyl-ne Alkene 4-5, acrylic acid trifluoro ethyl ester 5-6, dodecafluoroheptyl methacrylate 6-7, ethyl acetate 60-70, dicumyl peroxide 0.4-0.5,9-10% salpeter solution 90-100, urea saturated solution 90-100, hexafluoroacetylacetone 0.7-0.9, nanometer hydroxide Magnesium 1.1-1.3, thiol methyl tin 0.3-0.4, glass dust 1.2-1.4.

The preparation method of train timber rubber laminated floor the most according to claim 1, it is characterised in that include following step Rapid:

(1) wood wool is pulverized, dry to over dry, put in 9-10% salpeter solution, process 20-23 minute at 96-100 DEG C, mistake Filter, then soak 60-70 minute with urea saturated solution, filter, be dried, obtain swelling wood shavings；

(2) by nanometer polytetrafluoroethylcomposite, acrylic acid trifluoro ethyl ester, lithium perchlorate, dodecafluoroheptyl methacrylate, ethyl acetate Mixing, is heated to 60-70 DEG C, adds swelling wood shavings, adds dicumyl peroxide, stirring reaction 30-40 minute, is dried and goes Except ethyl acetate, obtain modified wood shavings；

(3) isocyanate adhesive is mixed homogeneously with acetone, add hexafluoroacetylacetone, nano-sized magnesium hydroxide, mercaptan first Ji Xi, glass dust mix homogeneously, obtain modified adhesive；

(4) modification wood shavings, modified adhesive are mixed homogeneously with other surplus stocks, carry out plate blank paving, then at 1.0- Carrying out precompressed 30-40s under 1.2MPa, then 140-150 DEG C, hot pressing molding in 8-9 minute under 3.5-3.8MPa, room temperature is placed 24-26 hour, then carry out sanding, to obtain final product.