CN1063092A - The manufacture method of light cement board mixed with fiber material - Google Patents

The manufacture method of light cement board mixed with fiber material Download PDF

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Publication number
CN1063092A
CN1063092A CN 92100565 CN92100565A CN1063092A CN 1063092 A CN1063092 A CN 1063092A CN 92100565 CN92100565 CN 92100565 CN 92100565 A CN92100565 A CN 92100565A CN 1063092 A CN1063092 A CN 1063092A
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CN
China
Prior art keywords
fiber
cement
light
weight
manufacture
Prior art date
Application number
CN 92100565
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Chinese (zh)
Inventor
雷新忠
Original Assignee
雷新忠
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 雷新忠 filed Critical 雷新忠
Priority to CN 92100565 priority Critical patent/CN1063092A/en
Publication of CN1063092A publication Critical patent/CN1063092A/en

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Abstract

Present used various cement plates, unit weight is big, resistance to impact shock is low, and is crisp and hard, is unsuitable for processing and installs, and uses the breakage rate height, and water loss is many in the production process, and power consumption is big.The present invention adds multiple fibre blend and pearlstone in composition of raw materials, and flocculation agent etc., adopt the rolling process moulding, but once grouting imposes vacuum hydro-extraction and roller process again to the required slurry thickness of goods, then through maintenance and drying.The goods unit weight of producing with this method is little, and the intensity height be easy to processing and install, and water loss is few in the production process, and power consumption is little, and since going into operation, extremely the user welcomes.

Description

The present invention is a kind of New Building Materials goods and manufacture method.

Fiber reinforced cement board is the New Building Materials that a kind of various countries competitively develop, and in recent years, China had also greatly developed this fibrid cement plate, has obtained the good social economic benefit, but also has following shortcomings:

(1) old product fibrous magnesium silicate enhanced fiber cement board, asbestos by internationally recognized be carcinogenic substance, China can not develop this series products again.

(2) the various fiber cement boards of producing at present, the unit weight height, quality is hard, fragility is big, resistance to impact shock is low, when processing is installed, the breakage rate height, its technical feature does not reach construction and service requirements.

Defectives such as (3) aspect manufacture method, current fiber cement board mainly adopts to copy gets winding process, and this kind technology exists water loss big, and cement runs off many, and power consumption is big obviously influence economic benefit of enterprises; Simultaneously, this technology is very low to the blending amount allowable that synthon, glass fibre etc. substitute fiber, thereby the cement fibrolite plate that adopts this technology to make, and its resistance to impact shock is all lower.

The objective of the invention is at the present existing defective of above-mentioned fiber cement board, replace fibrous magnesium silicate by in composition of raw materials, introducing multiple substitute fibre, again various fibers are carried out rational Match, and add an amount of light material and admixture, produce low, excellent in cushion effect, the easy processing of unit weight, installation, do not contain the light cement board mixed with fiber material of fibrous magnesium silicate, on technology, adopt slip casting roll-in novel process, the water loss that exists with the old in the past technology of reduction is big, the big and big shortcoming of cement number of dropouts of power consumption.

The main points of the manufacture method of light cement board mixed with fiber material of the present invention are to adopt low alkalinity cement: as Portland blast or aluminosulfate cement; The assorted fibre that used fiber is made up of cellulosic fibre, glass fibre and synthon three with three fibrid rational Match, has improved the mechanical property of goods; Also introduce light material-pearlstone and flocculation agent etc., its method for making is as follows:

(1) technical recipe scope such as table 1

Table 1 The starting material title Consumption (weight ratio) Remarks Cement fibre cellulose fiber glass fibre synthon pearlstone flocculation agent water 100 3~20 1~6 1~5 0~20<0.1 300~480 Low alkalinity cement: as slag cement or aluminosulfate cement.The short chopping of newsprinting paper or other waste paper alkali resistant glass fiber rove, length is the high-elastic mould vinylon fiber of 10~30mm, length is 6~15mm maximum particle diameter<1.25mm, unit weight 60~120g/cm 3With the polygalactomannan is main plant gum powder very much

(2) method for making is divided 3 steps

1. slip is produced: by prescription cellulosic fibre, synthon are dropped in the hydrapulpter and pull an oar, make concentration and be 3~5% blend fiber slurries, by proportioning glass fibre, cement, pearlstone, flocculation agent and water are added the waterpower stirrer again and continue to stir, make concentration and be 20~30% fibrocement slip.2. slab moulding with the moulding of slip casting roll-in method, is carried out on the slip casting roll squeezer, and once grouting imposes vacuum hydro-extraction and roller process again to the required slurry thickness of goods, and through above treatment process, slab just reaches the goods specific thickness; The slip casting roller pressing forming machine that the slab moulding is adopted as depicted in figs. 1 and 2, major portion is the vacuum mold car that an energy rolls on sole plate, when this car when the slip casting station stops, the slip for preparing is injected in the vacuum mold car 2 through grouting port 1, and there is scraper plate 3 its front portion, and grouting port 1 and scraper plate 3 are motionless, vacuum mold car 2 can roll on sole plate 6 by the roller 5 that is installed in its underpart, fixed scraper plate 3 is wipeed slip off, and according to the goods requirement, the control slurry thickness.Starting vacuum system dewaters to feed pulp layer, when the water content in being dewatered to slab reaches 50~100% scope, shift the vacuum mold car onto calender station again, impose the linear pressure of 2~30kg/cm by 7 pairs of slabs of pressure roller, make slab further closely knit, make the slab of meet the requirements thickness and surfacing, this moment, the slab water content was 25~70% scopes.3. above-mentioned slab is also dry through natural curing or vapor cure, water content is controlled in 5~10% scopes, just make the light cement board mixed with fiber material of excellent property.

Advantage of the present invention and effect are as follows:

1. in prescription, used a large amount of assorted fibres to replace fibrous magnesium silicate, introduced pearlstone,, reduced the unit weight of sheet material significantly, and obviously improved the shock resistance and the processing installation capability of goods guaranteeing that goods have under the prerequisite of enough bending strengths.

2. present method pulp density can reach more than 20%, has adopted the slip casting rolling forming process again, and therefore, but desired thickness is made in the once grouting roll-in, compares with old technology, can reduce water consumption and power consumption significantly.

3. the present invention goes into operation in Beijing factory and since product have lightweight, water-fast, do not fire, impact, be easy to processing and install and do not contain series of advantages such as asbestos, since going into operation, extremely the user welcomes, and obtains favorable social and economic benefits.

Below be embodiments of the invention:

Table 2 proportioning raw materials (weight ratio) The embodiment sequence number The 425# slag cement 425# sulplo-aluminate short-term strength cement High-elastic Mo Weinilun fiber Alkali resistant glass fiber Pearlstone Cellulosic fibre Water The vegetable jelly flocculation agent 1 / 100 0 4.7 0 18 4.6 0.06 2 100 / 2.5 2.5 4 7 3.7 0.03 3 / 100 0 3.1 6 12 3.6 0.06 4 100 / 1.5 2.5 9 10 4.6 0.03

Table 3 fabrication process parameters and performance The embodiment sequence number Molding technique parameter Performance Pulp density (%) Pressure roller linear pressure (kg/cm) Slab water content (%) Maintenance method Unit weight (g/cm 3) Bending strength (MPa) Resistance to impact shock (KJ/M 2) 1 2 3 4 21.0 23.8 25.2 21.1 15 5 7.5 2.5 43.3 38.5 42.8 48.2 Steam-cured 65 ℃ of steam-cured 65 ℃ of normal curing normal curings in 28 days 28 days 12 hours 12 hours 1.13 0.98 1.07 0.87 13.7 9.2 10.0 6.5 8.4 6.2 7.1 5.5

Through test of many times, the technical feature scope of light cement board mixed with fiber material of the present invention is as follows:

Unit weight 0.8~1.25g/cm 3

Bending strength 5.0~16.0MPa

Resistance to impact shock 5.0~10.0KJ/M 2

Do green deformation≤0.2%(with reference to JISA5418)

Water ratio 5~10%

Uninflammability qualified (pressing the GB5464-85 test)

The present invention implements in Beijing factory, and its product is successively at Beijing China hat Dairy Company, town and country, Beijing trade mansion, sky, Beijing peace mansion, numerous office building, large halls and guest houses such as Sichuan mansion and Beijing Petroleum Univ. is used, and is subjected to user's favorable comment, has obtained considerable economic results in society.

Claims (4)

1, a kind of building material goods, the manufacture method of light cement board mixed with fiber material, by cement, fiber and water are made, it is characterized in that used cement is low alkalinity cement, fiber also adds light material and flocculation agent etc. by the assorted fibre that cellulosic fibre, glass fibre, synthon three form, and its method for making is as follows:
(1) technical recipe
Cement 100 (weight part)
Cellulosic fibre 3~20 (weight part)
Glass fibre 1~6 (weight part)
Synthon 1~5 (weight part)
Light material 0~20 (weight part)
Flocculation agent<0.1 (weight part)
Water 300~480 (weight part)
(2) manufacturing process
Earlier three kinds of fibers are dropped in the hydrabeating machines and pull an oar, make concentration and be 3~5% blend fiber slurries, all the other admixtiones are put into continued to stir again, make concentration and be 20%~30% fibrocement slip; Moulding on the slip casting roll squeezer, once grouting is to the needed slurry thickness of goods, impose vacuum hydro-extraction again, when water content reaches 50%~100% scope to slab, carry out roller process, the linear pressure of roller is controlled at 2~30Kg/cm, and the slab water content that roll-in finishes is 25~70%, again through maintenance and drying.
2,, it is characterized in that used low alkalinity cement is aluminosulfate cement or Portland blast according to the manufacture method of the described light cement board mixed with fiber material of claim 1.
3,, it is characterized in that used light material is a pearlstone according to the manufacture method of the described light cement board mixed with fiber material of claim 1.
4,, it is characterized in that used flocculation agent is for being the plant gum powder of main component with the polygalactomannan according to the manufacture method of the described light cement board mixed with fiber material of claim 1.
CN 92100565 1992-02-21 1992-02-21 The manufacture method of light cement board mixed with fiber material CN1063092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 92100565 CN1063092A (en) 1992-02-21 1992-02-21 The manufacture method of light cement board mixed with fiber material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 92100565 CN1063092A (en) 1992-02-21 1992-02-21 The manufacture method of light cement board mixed with fiber material

Publications (1)

Publication Number Publication Date
CN1063092A true CN1063092A (en) 1992-07-29

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CN 92100565 CN1063092A (en) 1992-02-21 1992-02-21 The manufacture method of light cement board mixed with fiber material

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100357217C (en) * 2000-08-08 2007-12-26 北新建材(集团)有限公司 Vacuum extrusion process and equipment of fiber reinforced cement board
CN101898881A (en) * 2009-05-29 2010-12-01 韦尔豪泽Nr公司 The fiber cement board that contains modified fibre
CN101781106B (en) * 2009-01-15 2012-12-19 北新集团建材股份有限公司 Light-weight fiber reinforced cement board and manufacturing method thereof
CN102838324A (en) * 2012-09-26 2012-12-26 南阳师范学院 Decorative plate
CN102850002A (en) * 2012-09-26 2013-01-02 南阳师范学院 Board for room door
CN104213657A (en) * 2014-09-25 2014-12-17 山东莱州金声隆节能建材科技有限公司 Structure and external wall thermal insulation integral board as well as production process and production line of structure and external wall thermal insulation integral board
CN107365128A (en) * 2017-07-24 2017-11-21 浙江大学宁波理工学院 Useless silk reinforcing fiber cement plate and preparation method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100357217C (en) * 2000-08-08 2007-12-26 北新建材(集团)有限公司 Vacuum extrusion process and equipment of fiber reinforced cement board
CN101781106B (en) * 2009-01-15 2012-12-19 北新集团建材股份有限公司 Light-weight fiber reinforced cement board and manufacturing method thereof
CN101898881A (en) * 2009-05-29 2010-12-01 韦尔豪泽Nr公司 The fiber cement board that contains modified fibre
CN101898881B (en) * 2009-05-29 2015-02-18 韦尔豪泽Nr公司 Fiber cement board with modified fiber
CN102838324A (en) * 2012-09-26 2012-12-26 南阳师范学院 Decorative plate
CN102850002A (en) * 2012-09-26 2013-01-02 南阳师范学院 Board for room door
CN104213657A (en) * 2014-09-25 2014-12-17 山东莱州金声隆节能建材科技有限公司 Structure and external wall thermal insulation integral board as well as production process and production line of structure and external wall thermal insulation integral board
CN107365128A (en) * 2017-07-24 2017-11-21 浙江大学宁波理工学院 Useless silk reinforcing fiber cement plate and preparation method thereof
CN107365128B (en) * 2017-07-24 2020-01-31 浙江大学宁波理工学院 Waste silk reinforced fiber cement board and preparation method thereof

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