CN1287909A

CN1287909A - Prodn. art for producing flame-retardant artificial board

Info

Publication number: CN1287909A
Application number: CN 00102011
Authority: CN
Inventors: 赵昌健
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-31
Filing date: 2000-01-31
Publication date: 2001-03-21
Anticipated expiration: 2020-01-31
Also published as: CN1126651C

Abstract

The production technology of fire retarding artificial board includes the following steps: grindong, compounding, mixing, calendering, curing, demoulding, warm water treating and drying. The present invention uses twigs of chaste tree as main raw material and can utilize the waste resource-wild chatwood twigs. Adrantages include: good water proof, fire retarding properties, widely available raw material, low cost, simple process, etc. It can reduce equipment investment by 60%, reduce occupied floor space by 30% and reduce energy consumption by 50% compared with available production process.

Description

A kind of production technology of fire-retardation artificial board

The present invention relates to a kind of production technology of fire-retardation artificial board, particularly is the production technology that raw material is produced fire-retardation artificial board with the plant stem.

At present, the Wood-based Panel Production technology of using always in the industrial production, be primary raw material how with timber, crop stalk, rice husk etc., pulverize the back and add adhesive, through stir, mat formation, precompressed and at 10 MPa pressure, operation such as hot pressing under the condition of temperature, drying produces more than 150 ℃, its process route is long, and investment is big, and occupation area of equipment is big.In addition, use timber to make the cost of material height, and owing to national limit excessive is fallen trees, so the raw material supply deficiency.Though various crop stalks, rice husk is inexpensive, resource is sufficient, but do not possess characteristics such as fiber with excellent and elasticity eventually because of it, so all undesirable with physical and chemical indexs such as the wood-based plate intensity of its manufacturing, expansion rates, and waterproof, fire protecting performance are poor, can not satisfy instructions for use.Given this, people once attempted to utilize wild resource widely--and the plant chaste tree makes raw material and produces wood-based plate, but because its growth period is short, hemicellulose level is higher relatively, chaste tree is a shrub in addition, and the shared relative scale of skin is bigger, and its fiber content is few and lignin is many, be difficult to again in the production solve peeling technology, so be raw material with the chaste tree, can not satisfy instructions for use far away by its performance indications of wood-based plate of traditional processing technology manufacturing.

The object of the invention is to provide a kind of production technology of fire-retardation artificial board, enlarges the source of raw material of artifical plate, overcomes above-mentioned shortcoming of the prior art.

The present invention seeks to be achieved through the following technical solutions:

The production technology of fire-retardation artificial board comprises following operation successively: pulverizing, batching, stirring, calendering, maintenance, the demoulding, warm water are handled, drying.

Described pulverizing process is with after the bright twigs of the chaste tree drying, wears into broken silk.

Described burden process, its component and proportioning are (unit of weight): the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 7-12, magnesia (purity is 80%) 7-12, water 7-15;

Institute's ram compression prolongs operation, is the feeding port that the compound through stirring is added calender, carries out the normal temperature calendering then;

Described maintenance operation is that the sheet material horizontal with calendering formation makes it fully to solidify under the condition of work of 8 ℃-30 ℃ of room temperatures;

Described warm water treatment process is that the sheet material of producing through above-mentioned operation is put into temperature is 20 ℃-60 ℃ water, takes out in 15-40 hour.

Stirring of the present invention, the demoulding, drying process are same as the prior art.

The present invention is main material production high-quality wood-based plate with the twigs of the chaste tree, can make full use of waste resource--the wild bush twigs of the chaste tree, the prescription and the technology of traditional mode of production wood-based plate have been changed, the waterproof of finished product, fire protecting performance are good, raw material sources are extensive, cost is low, master operations such as mating formation in the existing production technology, precompressed, hot pressing have been saved and one-shot forming, thereby the corresponding special equipments such as spreading machine that saved, production equipment and technology have been simplified, equipment investment reduces 60%, floor space reduces 30%, reduces energy resource consumption more than 50%, and production cost is descended significantly.

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

The production technology of fire-retardation artificial board of the present invention comprises following operation successively: pulverizing, batching, stirring, calendering, maintenance, the demoulding, warm water are handled, drying.

1. pulverize: with the harvested bright twigs of the chaste tree dry, defoliation, the reusable heat grinding machine is worn into length with it and is≤1 centimetre broken silk;

2. batching: each component and weight can be by following embodiment proportionings:

Embodiment 1: the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 7, magnesia (purity is 80%) 11.5, water 14;

Embodiment 2: the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 8.5, magnesia (purity is 80%) 8, water 12;

Embodiment 3: the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 10, magnesia (purity is 80%) 10, water 10;

Implement side 4: the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 12, magnesia (purity is 80%) 7, water 7.5;

3. stir: can adopt existing technology, the material for preparing is according to the above ratio dropped into screw mixer, it is mixed.

4. calendering: send into the feeding port of calender through stirred materials, roll calendering more than 2 times by calender at normal temperatures then, smooth to plate surface;

5. maintenance, the demoulding: for accelerating setting rate, the horizontal lamination of the sheet material of calendering formation can be stacked, operating temperature can be controlled in 8 ℃-20 ℃, removes template after treating fully to solidify in 6-8 hour;

6. warm water is handled: it is 40 ℃-50 ℃ water that the sheet material after the demoulding is put into temperature, takes out after 36 hours;

7. dry, cutting edge: the sheet material after the warm water processing is air-dry, and cutting edge is put in storage then.

By the fire-retardation artificial board that raw material proportioning of the present invention and process conditions are produced, after testing, its physical property is: MOR 21.3MPa, impact strength 23KJ/m ², fire line: 900 ℃ do not burn water proofing property: water logging 70 hours is indeformable, and thickness swelling is 0.02%.

Claims

1. the production technology of a fire-retardation artificial board, comprise pulverizing, batching, stirring, the demoulding, drying process, it is characterized in that also including calendering, maintenance, warm water treatment process, the order of each operation is followed successively by: pulverizing, batching, stirring, calendering, maintenance, the demoulding, warm water are handled, drying;

Described twigs of the chaste tree manufacturing procedure is with after the bright twigs of the chaste tree drying, wears into broken silk;

Described calendering procedure is the feeding port that the compound through stirring is added calender, rolls then;

Described maintenance operation, under the condition of work of 8 ℃-30 ℃ of room temperatures, the sheet material horizontal with calendering formation makes it fully to solidify;

2. according to the production technology of the described fire-retardation artificial board of claim 1, it is characterized in that said pulverizing process for the bright twigs of the chaste tree are dried, defoliation, the reusable heat grinding machine is worn into length with it and is≤1 centimetre broken silk.

3. according to the production technology of claim 1 or 2 described fire-retardation artificial boards, it is characterized in that component and the proportioning in the said burden process is (unit of weight): the broken silk 100 of the twigs of the chaste tree, magnesium chloride (purity is 80%) 8.5, magnesia (purity is 80%) 8, water 12.

4. according to the production technology of claim 1 or 2 described fire-retardation artificial boards, it is characterized in that said calendering procedure adopts cold roll more than 2 times.

5. according to the production technology of claim 1 or 2 described fire-retardation artificial boards, it is characterized in that in the described maintenance operation the horizontal lamination of the sheet material of calendering formation being stacked, operating temperature can be controlled in 8 ℃-20 ℃, and setting time is 6-8 hour.

6. according to the production technology of claim 1 or 2 described fire-retardation artificial boards, it is characterized in that, in the described warm water treatment process, be sheet material after the demoulding to put into temperature be 40 ℃-50 ℃ water, take out after 36 hours.