CN1155465C

CN1155465C - Artificial timber making process

Info

Publication number: CN1155465C
Application number: CNB001073338A
Authority: CN
Inventors: 赵善茂; 张钊; 肖大壮
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-16
Filing date: 2000-05-16
Publication date: 2004-06-30
Anticipated expiration: 2020-05-16
Also published as: CN1323686A

Abstract

The present invention relates to a preparation method for artificial wood, which is characterized in that a macromolecule adhesive is added to glass short fiber rock wool which is directly converted from boiler ash, and the artificial wood and products thereof are manufactured by veneer board production lines or directly by fetal membrane pressing. The method of the present invention has low manufacture cost of wool rock fiber raw materials, so the manufactured products have the advantages of low price, no deformation, no crack, no decay and fire resistance, and the artificial wood is a good substitute for natural wood and has important economic meaning and social meaning.

Description

A kind of imitation wood's manufacture method

The invention belongs to the manufacture method of laminar product, more particularly, is that adhesive is sprayed on the rock wool fibers top layer that utilizes boiler ash to produce, and is pressed into sheet material or its goods with sandwich construction again.

As everyone knows, natural timber has special significance from forest to the mankind.Along with Increase of population and expanding economy, increasing to the demand of natural timber, quickened the speed that forest is cut down, cause forest fewer and feweri in the coverage rate of the earth, the destruction of ecological environment is in aggravation.In order to change this situation, many people replace the technology of natural timber the research imitation wood, for example the timber articles for use of Jinan, Shandong rock wool factory proposition decorative panel, ceiling substitute technology, be with conventional method make contain phenolic resins or UPF (Resin Adhesive UPF) glue 3～6% contain the collodion tire, being compressed into density with forcing press again is 300～500kg/m ³, thickness 10～15mm sheet material, be used separately as ceiling or decorative board for wall (Zhang Zaixin chief editor, " binding agent ", Chemical Industry Press, 1998) at its surface spraying gypsum or after pasting facing paper.The advantage of this technology is that ceiling, decorative board heat insulation, the sound insulation value made are good and in light weight, fire-retardant, but density 500kg/m ³Decorative panel intensity low, selling price is near the natural timber price, if improve intensity again, certainly will will improve its density, increases rock wool fibers consumption, is 1000kg/m as density ³Intensity can reach 40～60% imitation wood of natural timber, and its rock wool consumes will increase by 1 times, and its sale price exceeds 800 yuan/m of natural timber ³, therefore be difficult to promote the use of; In addition, Changsha polyurethane glues continuous glass fibre, the imitation wood who makes and " fiberglass " technology of utilizing adhering with epoxy resin glass cloth, continuous glass fibre of producing already then foam, though their light weights, intensity are higher, fiberglass intensity surpasses natural timber, but their selling price is more than 3～5 times of natural timber, therefore also is difficult to replace the imitation wood with these materials.

The objective of the invention is to overcome the shortcoming of prior art, propose the imitation wood's that a kind of low cost of manufacture, intensity height, technology be easy to promote manufacture method.

Main technical schemes of the present invention: the rock wool fibers (hereinafter to be referred as boiler method rock wool) that adopts the coal fired boiler lime-ash to change into is a raw material, by high polymer binder, is overlapped into the imitation wood of institute's required thickness.

Concrete preparation method of the present invention may further comprise the steps:

1. before making rock wool device centrifuge in the vane, spray into spray-on process and to blow cotton wind, blow cotton wind and in the blowing rock wool fibers, binding agent is sprayed on boiler method rock wool fibers top layer;

(2) rock wool of spraying adhesive being pressed into density with the bat nip drum on conveyer belt is 25～50kg/m ³, thickness be 20～300mm contain the collodion tire, its gel content is 3～10% (butts) that contain collodion tire weight;

(3) contain the collodion tire and be delivered to known plywood production line, be pressed into thick 1～10mm, density is 500～1500kg/m ³Timber plate tire, solidify down 15～30min at 150～350 ℃ and be the imitation wood;

(4) through sawing, shaping, polish, mount decorations, be processed into finished product.

Described (3) step can also directly be sent in the fetal membrane containing the collodion tire, through solidifying the timber-work that directly makes as desired structures such as desktop, bookshelf, door and windows.

The manufacture method patent applied for of described boiler method rock wool fibers (number of patent application 00103206.2), its used equipment is known technology.

Described high polymer binder comprises phenolic resins, UPF, epoxy resin, polyurethane resin bonding agent.

Advantage of the present invention and effect:

The present invention since used boiler method rock wool short fiber material than low 1000 yuan/ton of soaring method rock wool, can be used to again in the manufacture process solidify from 150～350 ℃ of hot blasts or the steam thermal energy of boiler, and make timber-work such as door and window, bookcase, desktop utilization contain the collodion tire on special fetal membrane once compression moulding solidify, add that sale can enjoy the tax-exemption policies that " three wastes " utilize, therefore press imitation wood and the goods thereof that the inventive method is made, on the comprehensive use value basis identical, come into the market with lower price with natural timber and goods thereof; Imitation wood of the present invention makes moist indeformable, and arid does not ftracture, and without putrefaction, so can be durable in use; By the imitation wood that the present invention makes, because fire resistance is arranged, therefore furniture, floor, door and window, the decorative panel that makes needn't be worried to catch fire, and also do not have termite in the humid area and damages by worms; Method of the present invention is to adopt hot setting, does not paint, therefore the pollution or the poisoning that can not produce harmful substance in the paint; In addition, the present invention is because the rock wool fibers that adopts boiler ash directly to change into is a raw material, therefore realize no slag discharging for boiler a kind of important method is provided, as being example with China, annual electricity generation boiler burns 8.5 hundred million tons in coal, coal ash slag 1.5～200,000,000 ton of discharging, the conversion ratio that the coal ash slag is directly changed into rock wool reaches 70%, the coal ash slag becomes the glass slip and also will add the vitrifying additive in addition, therefore annual transformable rock wool fibers can reach 2.1～2.8 hundred million tons, present Chinese rock wool and goods such as warming plate, thermal-insulating pipe case, ceiling year, consumption figure had only 90～1,000,000 tons, just 1,500 ten thousand tons of whole world consumption figures, if the imitation wood that 2.1～2.8 hundred million tons of rock wool fibers are made by the inventive method can reach 1.5～200,000,000 tons, be used to replace natural timber can avoid deforestation and solve boiler ash simultaneously stack the problem of taking up an area of, therefore method of the present invention has important economic implications and social effect.

Embodiment 1

By calorific capacity be the Western Hills meager coal of 25600KJ/kg to make rock wool fibers length on the horizontal cyclone stove of sulfur cycle be 15～75 millimeters, diameter is 3～15 microns, tensile strength is 8kg/mm ², when making, rock wool fibers sprays into UPF glue 4.5% (butt), and the collodion tire thickness of sending on foraminous conveyer that contains is that 300 millimeters, density are 30kg/m ³, enter the plywood production line pressure continuously and make 10 millimeters thick bats, make density 860kg/m after the curing ³Decorative panel, its tensile strength＞3Mpa, compression strength＞7Mpa.

Example 2

Rock wool fibers is with example 1, and binding agent is glass fiber binder (phenolic resins), and the glue amount is 6% (butt), contains 300 millimeters of collodion tire thickness, density 30.5kg/m ³, 8 stacked adding, be compressed into 50 millimeters thick desk desktops in special steel loose tool, and bat solidifies back density ≈ 1400kg/m ³, tensile strength＞8Mpa, compression strength＞10Mpa.After polishing, deburring, be finished product, need not paint.

Claims

1. an imitation wood preparation method is characterized in that manufacture process comprises the steps:

(1) before making rock wool device centrifuge in the vane, spray into spray-on process and to blow glue in the cotton wind, blow cotton wind and in the blowing rock wool fibers, binding agent is sprayed on boiler method rock wool fibers top layer;

(3) (2) step is contained the collodion tire and is delivered to known plywood production line, be pressed into thick 1～10mm, density is 500～1500kg/m ³Timber plate tire, solidify down 15～30min at 150～350 ℃ and be the imitation wood;

2. in accordance with the method for claim 1, it is characterized in that (3) step can directly send in the fetal membrane containing the collodion tire, after solidifying, make required timber-work.

3. in accordance with the method for claim 1, it is characterized in that described high polymer binder comprises phenolic resins, UPF, epoxy resin, polyurethane resin.