CN105003003A

CN105003003A - 3D printing self heat insulation wall body and preparing method of 3D printing self heat insulation wall body

Info

Publication number: CN105003003A
Application number: CN201510322582.XA
Authority: CN
Inventors: 刘政辰; 刘奕辰
Original assignee: 刘政辰
Priority date: 2015-06-13
Filing date: 2015-06-13
Publication date: 2015-10-28

Abstract

The invention relates to a 3D (3-Dimentional) printing self heat insulation wall body and a preparing method of the 3D printing self heat insulation wall body, and aims at providing the 3D printing self heat insulation wall body with the advantages of high compressive strength, low heat conduction coefficient, low production cost and good heat insulation effect. The 3D printing self heat insulation wall body is prepared from 40 percent to 50 percent of cement, 30 percent to 40 percent of hollow microspheres, 10 percent to 20 percent of grading micro powder, 10 percent to 20 percent of quick setting modified emulsion according to the following step that prepared slurry is conveyed to wall body 3D printing equipment through conveying equipment to be printed and formed. The 3D printing self heat insulation wall body provided by the invention is at the B05 grade; the density is 500 to 525kg/m<3>; the compressive strength is higher than or equal to 3.5MPa; the heat conduction coefficient is lower than or equal to 0.011 W/(m*k); the building load can be reduced; the consumption of reinforced concrete is reduced; the building cost is reduced by more than 5 percent; the wall body internal and external heat insulation is not needed for the 3D printing self heat insulation wall body, and the requirement of 50 percent or 65 percent of the building energy saving can be met; and huge social benefits and economic benefits can be generated.

Description

A kind of 3D prints self heat insulation wall and preparation method thereof

Technical field

The invention belongs to building thermal insulation material field, particularly relate to B05 level 3D and print self heat insulation wall, be specifically related to a kind of 3D and print self heat insulation wall and preparation method thereof.

Background technology

Country is to energy conservation, and improve housing conditions and pay much attention to, building energy conservation is a key areas of China's energy conservation.By the National Development and Reform Commission, the Ministry of Science and Technology, Department of Commerce, State Intellectual Property Office, in " the hi-tech industrialization major fields guide of current preference development " of issuing and implementation on January 23rd, 2007, clearly " first developing high-performance exterior wall self-insulation wall material " is proposed; The various drawbacks such as the equipment investment that existing heat insulation building block exists is excessive, the high enterprise of cost of labor, energy consumption is higher, environment pollution is serious, complicated construction technique, the construction period is long, cost is higher, heat bridge is more; Readjust the energy structure, energy-saving and cost-reducing, decreasing pollution discharges, protection of the environment, has become the major issue carried out the sustainable development of socio-economy and must solve; Now, 3D prints building and comes true already, and growth momentum is powerful; 3D prints body of wall because wall quality is good, speed of application fast, save the duration, cost is moderate and be rapidly developed, and existing market does not still consider that 3D prints body of wall and is combined with wall self-insulation, constrains its development; Therefore, the 3D developing a kind of excellent performance prints self heat insulation wall, becomes the focus of building thermal insulation material research field.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, and provide that a kind of compressive strength is high, coefficient of thermal conductivity is low, cost of production is low, the 3D of high insulating effect prints self heat insulation wall and preparation method thereof.

The object of the present invention is achieved like this: a kind of 3D prints self heat insulation wall, and it is the plate be made up by following percentage by weight of each component: cement 40% ~ 50%, cenosphere 30% ~ 40%, grating micro mist 10% ~ 20%, rapid hardening modified emulsion 10% ~ 20%.

A kind of 3D prints self heat insulation wall, and it is made up by following percentage by weight of each component: cement 40%, cenosphere 30%, grating micro mist 15%, rapid hardening modified emulsion 15%.

Described cement is Portland cement P.O425; Cenosphere heat distortion temperature is greater than 1350 DEG C, and contained CO2, N2 are asphyxiant gas, and its pH value is 6 ~ 9; Grating micro mist is slag micropowder S105 level, high-speed stirred is composite after the mixing of silicon ash, high strength gypsum powder, 600 order carborundum forms.

Described rapid hardening modified emulsion is mixed by polycarboxylate water-reducer, triethanolamine emulsion, hydroxypropyl methylcellulose, Graphene and forms mixture slurry through reactor is composite, and the water/binder ratio of described mixture slurry is between 0.30 ~ 0.32.

3D prints a preparation method for self heat insulation wall, and step one, prepares the material of following weight portion: cement 40% ~ 50%, cenosphere 30% ~ 40%, grating micro mist 10% ~ 20%, rapid hardening modified emulsion 10% ~ 20%, is carried out being uniformly mixed making slurry by above-mentioned material; Step 2, by the slurry obtained, is delivered to 3D printing device slip metering device through conveying equipment; Step 3, described slurry is printed slurry flow according to the setting of required density, and ratio is 1:1, and slurry is mixed with alkali-free liquid accelerator, is printed as wall by printing head, often printing 1 meter of height, with wiping one's face Mechanical Planarization 1 time; Step 4, the side of all exposures of body of wall described printing completed, all uses agricultural plastic film covering curing, curing age >=7d.

Beneficial effect of the present invention: 3D of the present invention prints self heat insulation wall, be combined with wall self-insulation, both the effect of going along with sb. to guard him was worked, playing insulation effect again, without the need to doing Surgery therapy in body of wall again, there is light weight, sound insulation, insulation, the premium properties such as fire-resistant, reduce energy consumption, be conducive to environmental protection, have wide promotion prospect, it is applied and will produce great economic benefit and social benefit; 3D of the present invention prints self heat insulation wall, it is produced and adopts small automatic 3D to print body of wall equipment, equipment investment is little, conveniently moving, production efficiency is high, moderate cost, constant product quality, fundamentally solves the various drawbacks such as equipment investment is excessive, the high enterprise of cost of labor, energy consumption is higher, environment pollution is serious, complicated construction technique, the construction period is long, cost is higher, heat bridge is more; 3D of the present invention prints self heat insulation wall, and be B05 level, density 500 ~ 525kg/m3, compressive strength >=3.5MPa, coefficient of thermal conductivity≤0.011 W/ (mK), without the need to doing Surgery therapy in body of wall again, can reach the requirement of building energy conservation 50% or 65%.

Detailed description of the invention

Embodiment 1

Prepared by printing slurry: join in 75kg water by cement 180kg, cenosphere 135kg, grating micro mist 90kg, rapid hardening modified emulsion 45kg, adopt homogenizer (rotating speed >=200r/min) to stir 3 ~ 4 minutes, be delivered to 3D printing device slip metering device through conveying equipment.

3D printing shaping: described slurry is printed slurry flow according to the setting of design density, mixes, be printed as wall by printing head, often print 1 meter of height with alkali-free liquid accelerator, with wiping one's face Mechanical Planarization 1 time.

Plastic film covering maintenance: the side of all exposures of body of wall described printing completed, all uses agricultural plastic film covering curing, curing age >=7d.

3D can be obtained by above-mentioned steps and print self heat insulation wall, have that compressive strength is high, coefficient of thermal conductivity is low, fire resistance is good, the advantage of high insulating effect.

Embodiment 2

Cast slurry preparation: cement 225kg, cenosphere 135kg, grating micro mist 45kg, rapid hardening modified emulsion 45kg are joined in 75kg water, adopt homogenizer (rotating speed >=200r/min) to stir 3 ~ 4 minutes, be delivered to 3D printing device slip metering device through conveying equipment.

Detect crystallite modification warming plate prepared by above embodiment, testing result is as table 1:

In sum, 3D of the present invention prints self heat insulation wall, according to described printing slurry preparation, 3D printing shaping, plastic film covering maintenance, thus there is following beneficial effect: be B05 level, density 500 ~ 525kg/m3, compressive strength >=3.5MPa, coefficient of thermal conductivity≤0.011 W/ (mK), both the effect of going along with sb. to guard him was worked, playing insulation effect again, without the need to doing Surgery therapy in body of wall again, the requirement of building energy conservation 50% or 65% can be reached, remarkable reduction construction costs, durability can meet the requirement of building service life.

Claims

1. 3D prints a self heat insulation wall, and it is characterized in that, it is the plate be made up by following percentage by weight of each component: cement 40% ~ 50%, cenosphere 30% ~ 40%, grating micro mist 10% ~ 20%, rapid hardening modified emulsion 10% ~ 20%.

2. a kind of 3D as claimed in claim 1 prints self heat insulation wall, and it is characterized in that, it is made up by following percentage by weight of each component: cement 40%, cenosphere 30%, grating micro mist 15%, rapid hardening modified emulsion 15%.

3. a kind of 3D as claimed in claim 1 prints self heat insulation wall, it is characterized in that: described cement is Portland cement P.O425; Cenosphere heat distortion temperature is greater than 1350 DEG C, and contained CO2, N2 are asphyxiant gas, and its pH value is 6 ~ 9; Grating micro mist is slag micropowder S105 level, high-speed stirred is composite after the mixing of silicon ash, high strength gypsum powder, 600 order carborundum forms.

4. a kind of 3D as claimed in claim 1 prints self heat insulation wall, it is characterized in that: described rapid hardening modified emulsion is mixed by polycarboxylate water-reducer, triethanolamine emulsion, hydroxypropyl methylcellulose, Graphene and forms mixture slurry through reactor is composite, and the water/binder ratio of described mixture slurry is between 0.30 ~ 0.32.

5. a kind of 3D as claimed in claim 1 prints the preparation method of self heat insulation wall, it is characterized in that:

Step one, prepares the material of following weight portion: cement 40% ~ 50%, cenosphere 30% ~ 40%, grating micro mist 10% ~ 20%, rapid hardening modified emulsion 10% ~ 20%, is carried out being uniformly mixed making slurry by above-mentioned material;

Step 2, by the slurry obtained, is delivered to 3D printing device slip metering device through conveying equipment;

Step 3, described slurry is printed slurry flow according to the setting of required density, and ratio is 1:1, and slurry is mixed with alkali-free liquid accelerator, is printed as wall by printing head, often printing 1 meter of height, with wiping one's face Mechanical Planarization 1 time;

Step 4, the side of all exposures of body of wall described printing completed, all uses agricultural plastic film covering curing, curing age >=7d.