阅读说明：本技术 一种结构性生物质基硅炭管材材料的制备方法 (Preparation method of structural biomass silicon carbon pipe material ) 是由 蓝华萍 周仁进 张翔 马荣增 唐森 叶春晓 宋俊江 许小飞 于 2020-11-19 设计创作，主要内容包括：本发明公开了一种结构性生物质基硅炭管材材料的制备方法,包括硅碳材料,所述硅碳材料在和高分子聚合物共混时通过反应型双螺杆加工,使材料在聚合物中得到更好的塑化效果,同时凹凸颗粒在双螺杆剪切力的作用下,将颗粒变成更细小的短纤维状,这种短纤维状在浮力作用下形成相互交错的形状,结构如同“#”状的排列,从而得到更佳的增韧效果,还在与高聚物共混过程中体现出了功能性的增强增韧作用,利用硅碳材料的纤维微孔结特性,对颗粒内层的纤维孔道进行有机改性,在保持其纤维结构的前提下,提高其与高聚物的相容性,具有了独特的改性功能,不仅替代了增韧剂树脂,并在最终制品中体现的抗老化性能和物理性能更优越。(The invention discloses a preparation method of a structural biomass silicon carbon pipe material, which comprises a silicon carbon material, wherein the silicon carbon material is processed by a reactive double screw when being blended with a high molecular polymer, so that the material obtains a better plasticizing effect in the polymer, meanwhile, concave-convex particles change the particles into finer short fiber shapes under the action of the shearing force of the double screw, the short fiber shapes form mutually staggered shapes under the action of buoyancy, the structures are arranged like a #, so that a better toughening effect is obtained, the functional reinforcing and toughening effects are also embodied in the blending process with the high polymer, fiber pore canals in the inner layers of the particles are organically modified by utilizing the fiber micropore bonding characteristics of the silicon carbon material, the compatibility with the high polymer is improved on the premise of keeping the fiber structure of the silicon carbon material, the silicon carbon pipe material has a unique modification function, not only replaces toughening agent resin, and the anti-aging performance and the physical performance of the product are more excellent.)

1. A preparation method of a structural biomass silicon carbon pipe material comprises a silicon carbon material, and is characterized in that: the technological process for the carbon deposition of the silicon-carbon material comprises the following steps: the process flow for producing the silicon carbon material comprises the following steps: high-temperature purification, grinding and drying, sorting, activation, esterification reaction, surface lubrication and drying, and cooling and sorting, wherein the silicon-carbon material carbonization process flow comprises the following steps:

step 1, treating free water on the surface of rice hulls and crystal water in the rice hulls in a first-stage heating process at 100-180 ℃;

step 2, treating the surface dust of the rice hulls and separating out impurity residues in a second-stage heating process at 180-350 ℃;

step 3, treating the rice hull carbon deposit in a third-stage heating at 350-500 ℃ to form silicon dioxide and active carbon;

and 4, treating the rice hull carbon deposition in a fourth-stage heating process at 500-650 ℃, and then structurally forming silicon and carbon in a gasification furnace.

2. The method for preparing the structural biomass silicon carbon pipe material according to claim 1, wherein the method comprises the following steps: the silicon-carbon material belongs to a biomass-based nano-micron structural functional environment-friendly material, completely accords with national hygienic indexes, and passes SGS, ROHS and SVHC detection, because the silicon-carbon material reaches nano-micron level, the silicon-carbon material is required to be fully dispersed in HDPE through surface treatment modification, and can be fully compatible with HDPE, a dispersion phase is formed in HDPE, so that the compactness of the pipe is improved, and the integral pressure resistance of the pipe is achieved.

3. The method for preparing the structural biomass silicon carbon pipe material according to claim 1, wherein the method comprises the following steps: the main components of the silicon-carbon material formed at high temperature are C and SI, hollow silicon dioxide and microporous fibrous carbon crystals are formed by comparing single crystals through the reaction of a gasification furnace, the two crystals have unique layer chain structure characteristics, and lattice displacement exists in the structure of the crystals, so that the silicon-carbon material has unique dispersion, high temperature resistance, good colloid properties such as saline alkali resistance and the like, higher adsorption capacity and certain plasticity and cohesive force, and is an intermediate structure between the chain structure and the layered structure, and the unique structure enables the silicon-carbon material to be a natural one-dimensional rod-shaped material, thereby showing various excellent physicochemical properties such as adsorptivity, toughness, wear resistance, ageing resistance and the like, and creating conditions for chemical modification and material compounding.

4. The method for preparing the structural biomass silicon carbon pipe material according to claim 1, wherein the method comprises the following steps: the silicon-carbon material is prepared by organically modifying the fiber surface through reactions such as high-temperature thermal activation, chemical treatment and the like, and then dispersing silicon-carbon in a high polymer system in a structural form by utilizing double-screw shearing and a processing aid to prepare the special material for the functional pipe, so that the special material for the functional pipe is kept in a unique fibrous structure, the excellent rigidity of the material is reflected by a special silicon-carbon arrangement sequence, the perfect high elasticity of a microporous fiber structure is reflected in the pipe, and meanwhile, the silicon-carbon material is a full-biological-based structural material and has a perfect outstanding value in the food sanitation property.

5. The method for preparing the structural biomass silicon carbon pipe material according to claim 1, wherein the method comprises the following steps: the silicon-carbon material is processed by a reactive double screw when being blended with a high molecular polymer, the modified active group on the surface of the silicon-carbon material and the molecular chain of the polymer generate a mutual cross-linking phenomenon in the processing process, so that the material obtains a better plasticizing effect in the polymer, meanwhile, concave-convex particles change the particles into finer short fiber shapes under the action of the shearing force of the double screw, the short fiber shapes form a mutually staggered shape under the action of buoyancy, and the structure is arranged like a # shape, so that a better toughening effect is obtained. The # -shaped fibers are arranged as a dispersed phase of the molecular polymer, so that a high-toughness work-cut composite system is formed by extrusion under pressure in a double-screw device, and therefore, the functional reinforcing and toughening effects are realized in the process of blending with the high polymer.

6. The method for preparing the structural biomass silicon carbon pipe material according to claim 1, wherein the method comprises the following steps: the silicon-carbon material is loosely piled in a PE system to form a dispersed island phase with a silicon-carbon filled piled masonry as a core and a PE as a shell, the core-shell structure characteristic phase containing particles have good toughening and reinforcing effects on a matrix, the silicon-carbon material is organically modified by means of esterification reaction, and a high polymer material is used for filling a fiber pore canal with high adsorbability in a breakthrough manner, so that the pore canal has elasticity, the toughness of the fiber is greatly improved, the surface of the silicon-carbon material is changed from complete hydrophilicity to moderate lipophilicity, the silicon-carbon material has the dual properties of inorganic and organic, the problem that the silicon-carbon material is unevenly dispersed in a high polymer matrix is fundamentally solved, the silicon-carbon material embodies better intermiscibility when being blended with the high polymer, and the extrusion granulation production process is more facilitated.

Technical Field

The invention belongs to the technical field of structural biomass silicon carbon pipe materials, and particularly relates to a preparation method of a structural biomass silicon carbon pipe material.

Background

At present, the domestic city construction belongs to the high-speed development stage, and the municipal works such as the transformation of old cities, the removal of villages in cities, the construction of new rural areas, the treatment of river channels and the like. Early city construction has insufficient attention to drainage systems and drainage equipment, so that serious waterlogging occurs in many cities in the rainy season in the season. Meanwhile, under the condition that a drainage system is not complete, water pollution is serious, and the protection measures of rain and sewage diversion and the work of domestic sewage parallel-pipe centralized treatment in new rural construction are provided. In the vigorous development and construction of municipal works, a large demand is brought to the drainage pipeline correspondingly. The early cement pipeline is improved to a steel pipe, and the plastic drainage pipeline is proposed by the national science and technology hall and the urban and rural construction committee. So the double-wall corrugated pipe is finally selected as the main drainage pipeline. However, the double-wall corrugated pipes produced by domestic pipeline manufacturers are all produced by adopting HDPE reclaimed materials and filling inorganic powder. When the pipe is pressed by being buried for a long time, the pipe is easily deformed and broken, and the blocking phenomenon of drainage is frequently caused. Wherein the filled pipe is more likely to damage the structure and surface thereof due to the acidity of rainwater and bacterial growth of sewage, and the long-term corrosion finally leads to the collapse of the pipeline.

At the same time, the domestic municipal water supply pipe is mainly divided into three types: the metal galvanized pipe/HDPE straight arm pipe/steel wire framework composite pipe.

1. Metal galvanized pipe

The galvanized metal pipe is the earliest tubular product of domestic application, and long-term use can let the galvanizing coat on galvanized metal pipe surface lose, and metal oxidation rusts like this and leads to the relatively cloudy state of appearing when resident's life drains, and the water that need not put out even for a long time all is rust water, is extremely unfavorable for domestic water. And also brings great trouble to residents.

The metal has higher density and is the pipe with best rigidity at present. Due to the physical characteristics, the excessively heavy volume is extremely inconvenient in installation, and meanwhile, the connection mode also needs to adopt electric welding, so that the subsequent maintenance is extremely not complicated.

HDPE straight arm pipe

HDPE straight-arm pipes are the most widely used at present and are the brand new generation products. HDPE has good toughness, good acid and alkali resistance and corrosion resistance, and is convenient to melt and weld. Meanwhile, the specific gravity is light, and the installation is more convenient on site.

HDPE belongs to polyolefin materials, has relatively good toughness but slightly poor rigidity and strength, and has factors such as brick remnants formed underground due to heavy-load rolling in special construction places. It is easy to burst in case of long-term compression. Because the density of HDPE material itself is less, the compactness when producing tubular product also receives the influence, in addition long-term pressurized leads to the tiredness of tubular product to increase, and the probability that appears bursting increases a lot, and this is the cause that tap water company salvagees the accident many so many years.

3. Steel wire framework composite pipe

The steel wire framework composite pipe is an HDPE steel wire winding pipe, and the rigidity requirement of pure HDPE is made up by structural design aiming at the defect of insufficient HDPE rigidity. And also structural tubing that has just been developed in these two years. Through the change of the production process of the pipe, when HDPE is extruded, steel wires are woven on the surface of the pipe through other equipment, and then the HDPE is compounded through one layer, so that the composite pipe with the middle part reinforced by steel wire winding is formed. The production process is relatively complex. Since the metal and the plastic are directly combined, the separation phenomenon is necessarily generated in long-term application. In the separation process, the steel wire can generate great supporting force, and the product is easy to burst under the action of water pressure. Meanwhile, when the pipes are welded, the phenomenon that joints are not firm or steel wires are exposed is particularly easy to cause, so that the problem of the steel wire framework composite pipe is that the joint is most seriously damaged. Therefore, the structure of the structural biomass silicon carbon pipe material needs to be improved, and a preparation method of the structural biomass silicon carbon pipe material is provided, so that the provided problems can be better solved.

Disclosure of Invention

The invention aims to: in order to solve the problems, a preparation method of a structural biomass silicon carbon pipe material is provided.

The technical scheme adopted by the invention is as follows:

a preparation method of a structural biomass silicon carbon pipe material comprises a silicon carbon material, wherein the silicon carbon material has the following carbon formation process flow: the process flow for producing the silicon carbon material comprises the following steps: high-temperature purification, grinding and drying, sorting, activation, esterification reaction, surface lubrication and drying, and cooling and sorting, wherein the silicon-carbon material carbonization process flow comprises the following steps:

step 1, treating free water on the surface of rice hulls and crystal water in the rice hulls in a first-stage heating process at 100-180 ℃;

step 2, treating the surface dust of the rice hulls and separating out impurity residues in a second-stage heating process at 180-350 ℃;

step 3, treating the rice hull carbon deposit in a third-stage heating at 350-500 ℃ to form silicon dioxide and active carbon;

and 4, treating the rice hull carbon deposition in a fourth-stage heating process at 500-650 ℃, and then structurally forming silicon and carbon in a gasification furnace.

In a preferred embodiment, the silicon-carbon material belongs to a biomass-based nano-micron structural functional environment-friendly material, and completely meets the national sanitation index, the carbon-silicon material passes SGS, ROHS and SVHC detection, and the silicon-carbon material is subjected to surface treatment and modification when reaching nano-micron level and is fully dispersed in HDPE, so that the silicon-carbon material can be fully compatible with the HDPE, the dispersed phase is formed in the HDPE, the compactness of the pipe is improved, the integral pressure resistance of the pipe is achieved, meanwhile, the nano-micron microporous structural property of the silicon-carbon material can be mutually adjusted under the conditions of impact and resonance, the good resilience of the pipe is fully displayed, the special silicon-carbon element arrangement of the silicon-carbon material is realized, the metal-like rigidity characteristic of the material is highlighted, the ring rigidity and the tensile strength of the pipe are effectively improved, and the stronger compactness has stronger firmness during butt welding of the pipe.

In a preferred embodiment, the main components formed by the silicon-carbon material at high temperature are C and SI, hollow silicon dioxide and microporous fibrous carbon crystals are formed by single crystal contrast through the reaction of a gasification furnace, the two crystals generate a unique layer chain structure characteristic, and lattice displacement exists in the structure of the two crystals, so that the silicon-carbon material has unique dispersion, high temperature resistance, good colloid properties such as saline alkali resistance and the like, higher adsorption capacity and certain plasticity and cohesive force, and an intermediate structure between the chain structure and the layer structure, and the unique structure enables the silicon-carbon material to be a natural one-dimensional rod-shaped material, thereby showing various excellent physicochemical properties such as adsorptivity, toughness, wear resistance, aging resistance and the like, and creating conditions for chemical modification and material compounding.

In a preferred embodiment, the silicon-carbon material is subjected to organic modification on the fiber surface through reactions such as high-temperature thermal activation, chemical treatment and the like, and then silicon-carbon is dispersed in a polymer system in a structural form by utilizing double-screw shearing and a processing aid to prepare the special material for the functional pipe, so that the special material for the functional pipe is kept in a unique fibrous structure, the special silicon-carbon arrangement sequence shows the excellent rigidity of the material, the microporous fibrous structure shows perfect high elasticity in the pipe, and meanwhile, the silicon-carbon material is a full-biological-based structural material and has perfect outstanding value in food hygiene performance.

In a preferred embodiment, the silicon-carbon material is processed by a reactive twin-screw when being blended with a high molecular polymer, the modified active groups on the surface of the silicon-carbon material and the molecular chains of the polymer are mutually cross-linked in the processing process, so that the material can obtain better plasticizing effect in the polymer, meanwhile, concave-convex particles change the particles into finer short fiber shapes under the action of the shearing force of the twin-screw, and the short fiber shapes form mutually staggered shapes under the action of buoyancy force and are arranged like a #, so that better toughening effect is obtained. The # -shaped fibers are arranged as a dispersed phase of the molecular polymer, so that a high-toughness work-cut composite system is formed by extrusion under pressure in a double-screw device, and therefore, the functional reinforcing and toughening effects are realized in the process of blending with the high polymer.

In a preferred embodiment, the silicon-carbon material is loosely stacked in a PE system to form a dispersed island phase with the silicon-carbon filled stacked masonry as a core and the PE as a shell, the core-shell structure characteristic phase compatible particles have good toughening and reinforcing effects on a matrix, the silicon-carbon material is organically modified by means of esterification reaction, and a high polymer material is used for filling a fiber pore channel with high adsorbability in a breakthrough manner, so that the pore channel has elasticity, the toughness of the fiber is greatly improved, the surface of the silicon-carbon material is changed from complete hydrophilicity to moderate lipophilicity, and the silicon-carbon material has dual properties of inorganic and organic, so that the problem that the silicon-carbon material is not uniformly dispersed in a high polymer matrix is fundamentally solved, the silicon-carbon material embodies better compatibility when being blended with the high polymer, and the extrusion granulation production process is facilitated.

In conclusion, by adopting the technical scheme, the silicon-carbon composite material has the beneficial effects that the fiber pore canal of the inner layer of the particle is organically modified by utilizing the fiber micropore junction characteristic of the silicon-carbon material, the compatibility of the silicon-carbon composite material and a high polymer is improved on the premise of keeping the fiber structure of the silicon-carbon composite material, the silicon-carbon composite material has a unique modification function, not only replaces a toughening agent resin, but also has better ageing resistance and physical property in a final product.

1. In the invention, the silicon-carbon material is processed by a reactive double screw when being blended with a high molecular polymer, and the modified active group on the surface of the silicon-carbon material and the molecular chain of the polymer generate a mutual interlinkage phenomenon in the processing process, so that the material obtains a better plasticizing effect in the polymer, meanwhile, concave-convex particles change the particles into finer short fiber shapes under the action of the shearing force of the double screw, and the short fiber shapes form mutually staggered shapes under the action of buoyancy, and the structure is arranged like a # shape, thereby obtaining a better toughening effect. The "#" shaped fibers are arranged as a dispersed phase of molecular polymer such that extrusion under pressure in a twin screw apparatus forms a composite system of high tenacity work cut. Therefore, the functional reinforcing and toughening effects are shown in the process of blending with the high polymer.

2. According to the invention, the silicon carbon material is organically modified by virtue of esterification reaction, and the fiber pore channel with high adsorbability is filled by using a high polymer material in a breakthrough manner, so that the pore channel has elasticity, the toughness of the fiber is greatly improved, the surface of the silicon carbon material is changed from complete hydrophilicity to proper lipophilicity, and the silicon carbon material has the dual properties of inorganic and organic, fundamentally solves the problem that the silicon carbon material is not uniformly dispersed in a high polymer matrix, embodies better intermiscibility when being blended with a high polymer, and is more beneficial to an extrusion granulation production process.

Drawings

FIG. 1 is a schematic view of the process flow of producing silicon carbon material in the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1: the invention applies the comparison analysis in the double-wall corrugated pipe for drainage and pollution discharge

Selection indexes of HDPE materials: the molten finger is 0.3-0.8 g/10min (190 ℃, 5KG)

Density: 0.96g/cm³

Tensile strength: 26MPA

Elongation at break: 350 percent

The surface treating agent for silicon carbon material is selected according to the application in different fields, and can be divided into silane series, phthalate series, aluminate series, rare earth series, acid coupling agent and the like, and the silicon carbon material is treated according to different treating agents with the addition of 1-10% according to the required types.

Example 2: the practical comparison analysis of the invention in HDPE water supply pipe is as follows:

50-95 parts of HDPE

Silicon carbon material: 5 to 50 portions of

HDPE is a class N100 pipe material. Melt finger 0.25g/10min (190 ℃, 5KG)

Density: 0.96g/cm³

Tensile strength: 32MPA

Elongation at break: 400 percent

The surface treatment of the silicon carbon material adopts the auxiliary agents in the embodiment 1.

Example 3: the practical comparison analysis of the invention in the LDPE coil pipe is as follows:

50-95 parts of LDPE

Silicon carbon material: 5 to 50 portions of

The LDPE adopts LDPE7042 or LDPE7040 materials: the molten finger is 2.5g/10min (190 ℃, 2.16KG)

Density: 0.96g/cm³

Tensile strength: 22MPA

Elongation at break: 650 percent of

The surface treatment of the silicon carbon material adopts the auxiliary agents in the embodiment 1.

Example 4: the practical comparison analysis of the invention in PP telecommunication sleeve:

50-95 parts of PP

Silicon carbon material: 5 to 50 portions of

PPK8003 material is adopted in PP: melt finger 1.5g/10min (230 ℃, 2.16KG)

Density: 0.92g/cm³

Tensile strength: 36MPA

Elongation at break: 350 percent

The surface treatment of the silicon carbon material adopts the auxiliary agents in the embodiment 1.

Example 5: the practical comparison analysis of the invention in ABS chemical pipe is as follows:

50-95 parts of ABS

Silicon carbon material: 5 to 50 portions of

The ABS adopts ABS757 material: the molten finger is 18.5g/10min (220 ℃, 10KG)

Density: 1.05g/cm³

Tensile strength: 45MPA

Impact strength: 38MPA

The surface treatment of the silicon carbon material adopts the auxiliary agents in the embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.