阅读说明：本技术 一种碳纤维增强的高模量缠绕管的生产方法 (Production method of carbon fiber reinforced high-modulus winding pipe ) 是由 蔡建军 夏新林 徐冬前 林侃 于 2020-04-30 设计创作，主要内容包括：本发明提出了一种碳纤维增强的高模量缠绕管的生产方法,具体包括有如下的工艺步骤：(1)将原料按比例进行称重配方；(2)把配方好的原料加入到混料机中进行混合搅拌,同时混料机中升温到熔融温度,搅拌熔融的原料,使原料在搅拌过程中改性塑化；(3)将混合好的原料加入到螺旋挤出机中,在螺旋挤出机高温加压,挤出熔融流体,熔融流体通过成型模具挤出为空心管状,并在缠绕管成型机上缠绕成型为管壁；(4)将不断增长的缠绕管切割,控制切割为所需的长度。本工艺方法提高了高模量管材成型的效率,以及提高了管材熔融料的流动性,减少成型的缺陷,降低了管材成型的难度,适合大规模的生产加工,提高了经济效益。(The invention provides a production method of a carbon fiber reinforced high-modulus winding pipe, which specifically comprises the following process steps: (1) weighing and formulating the raw materials in proportion; (2) adding the raw materials with the well-formulated formula into a mixer for mixing and stirring, simultaneously heating the mixer to a melting temperature, and stirring the melted raw materials to modify and plasticize the raw materials in the stirring process; (3) adding the mixed raw materials into a spiral extruder, pressurizing at high temperature in the spiral extruder, extruding molten fluid, extruding the molten fluid into a hollow tubular shape through a forming die, and winding and forming the hollow tubular shape on a winding pipe forming machine to form a pipe wall; (4) and cutting the continuously growing winding pipe into required lengths in a controlled manner. The process method improves the molding efficiency of the high-modulus pipe, improves the fluidity of the pipe molten material, reduces the molding defect, reduces the molding difficulty of the pipe, is suitable for large-scale production and processing, and improves the economic benefit.)

1. A production method of a carbon fiber reinforced high-modulus winding pipe specifically comprises the following process steps:

(1) weighing and formulating the raw materials in proportion;

(2) adding the raw materials with the well-formulated formula into a mixer for mixing and stirring, simultaneously heating the mixer to a melting temperature, and stirring the melted raw materials to modify and plasticize the raw materials in the stirring process;

(3) adding the mixed raw materials into a spiral extruder, pressurizing at high temperature in the spiral extruder, extruding molten fluid, extruding the molten fluid into a hollow tubular shape through a forming die, and winding and forming the hollow tubular shape on a winding pipe forming machine to form a pipe wall;

(4) and cutting the continuously growing winding pipe into required lengths in a controlled manner.

2. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the raw materials comprise the following components in percentage by weight: 5-15% of glass fiber, 1.5-5% of carbon fiber, 10-50% of superfine heavy calcium carbonate, 0.2-1% of coupling agent, 0.3-1.2% of stearic acid, 0.3-0.8% of stabilizer, 80-90% of PP (polypropylene), 5-20% of LLDPE (linear low-density polyethylene), 2-5% of defoaming agent and colorant.

3. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the coupling agent comprises oxidized polyethylene wax, and the weight ratio of the oxidized polyethylene wax to the coupling agent is 0.3-0.8% of the total weight.

4. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the screw extruder is a double-screw extruder, and the heating temperature of the screw extruder is 180-220 ℃.

5. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the forming die is a cylindrical sleeve and is provided with an axial rotating driving device, the sleeve is sleeved with the inner layer of the winding pipe, and the melt discharged from the extrusion port of the spiral extruder is spirally wound on the surface of the inner layer of the winding pipe and is solidified and formed.

6. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the forming die is provided with a water spraying head, a water spraying part of the water spraying head is correspondingly arranged on the surface of the solidified melt, and the water outlet of the water spraying head is sprayed on the surface of the winding pipe.

7. A process for the production of a carbon fibre reinforced high modulus winding pipe according to claim 1, characterized in that: the colorant is carbon black, and the weight ratio of the colorant to the whole raw materials is 2-5%.

Technical Field

The invention relates to a processing and production method of a drainage pipeline, in particular to a production method of a carbon fiber reinforced high-modulus winding pipe.

Background

The winding pipe is a pipeline structure applied to sewage treatment in an underground pipe network, and one or more layers of the pipe are formed by winding a formed supporting cavity structure during forming, so the winding pipe is called as a winding pipe, and the winding pipe can bear larger radial pressure due to the fact that the strength of the pipe wall is improved by the aid of the supporting structure, the risk of pipe body breakage is reduced, and compared with the traditional pipeline, the winding pipe is light in weight, long in service life, not prone to corrosion, good in weather resistance and capable of reducing the necessity of overhaul, and therefore the winding pipe has better economic benefits; the winding pipe is formed by plastic materials, the production efficiency is high, the production scale can be rapidly enlarged, and the winding pipe is suitable for the trend of rapid development of current infrastructure.

The winding pipe has various application scenes, can be used for conventional municipal pipe networks and can also be applied to the treatment of industrial wastewater, but the treatment process of the industrial wastewater contains residues of various chemical engineering and industrial processing and has certain corrosivity, and if the service life is better, the pipeline needs to be improved to adapt to impurities and corrosivity in an industrial environment, so that the service life of the pipeline is prolonged.

Disclosure of Invention

The present invention aims to overcome the above-mentioned disadvantages of the prior art and to provide a method for producing a carbon fiber reinforced high modulus winding tube.

The technical scheme adopted by the invention for solving the problems is as follows:

the method specifically comprises the following process steps:

(1) weighing and formulating the raw materials in proportion;

(2) adding the raw materials with the well-formulated formula into a mixer for mixing and stirring, simultaneously heating the mixer to a melting temperature, and stirring the melted raw materials to modify and plasticize the raw materials in the stirring process;

(3) adding the mixed raw materials into a spiral extruder, pressurizing at high temperature in the spiral extruder, extruding molten fluid, extruding the molten fluid into a hollow tubular shape through a forming die, and winding and forming the hollow tubular shape on a winding pipe forming machine to form a pipe wall;

(4) and cutting the continuously growing winding pipe into required lengths in a controlled manner.

Aiming at the problems of poor flowing and forming defects in the forming process of high-modulus pipes, the process improves the forming efficiency of high-modulus pipes by using a mode of premixing and combining a screw extruder to work cooperatively, improves the fluidity of pipe molten materials, reduces the forming defects, reduces the forming difficulty of the pipes, is suitable for large-scale production and processing, and improves the economic benefit.

The mixer has the capability of heating and stirring simultaneously in the mixing process, the components for improving the strength of the pipe in the raw materials are fully mixed in the molten mass of the raw materials, the uniformity of the strength of the materials is improved, the overall strength of the materials is improved, the local defect area of the materials is reduced, the strength of the pipe is integrally improved, the effect is good when the stress damage on the local surface of the pipe is resisted, the local crushing of the pipe is avoided, and the overall strength is influenced, the molten mass mixed in the mixer can be injected into the screw extruder in a molten or semi-molten state under the condition of heat, the processing efficiency can be improved, the flowability of the raw materials of the pipe is good under the condition of being close to the molten state, the surface has tension, the mixing effect of the components of the raw materials in the flowing state is good, and the screw extruder increases the extrusion pressure on the molten mass through a screw structure, and simultaneously, the temperature is increased, the mixture is extruded on a forming device under the state of high pressure and high temperature, the strength of the pipe is improved, the strength of the material is improved in the process from high-temperature melting to rapid solidification, the surface hardness is increased, and the quality of the pipe is improved.

Further, the raw materials comprise the following components: 5-15% of glass fiber, 1.5-5% of carbon fiber, 10-50% of superfine heavy calcium carbonate, 2-5% of carbon black, 0.2-1% of coupling agent, 0.3-1.2% of stearic acid, 0.3-0.8% of stabilizer, 80-90% of PP, 5-20% of LLDPE and 2-5% of defoaming agent.

The method is characterized in that glass fiber and carbon fiber are added in the raw materials, wherein the carbon fiber is a material for improving the strength, the material added with the carbon fiber has the characteristics of small density, corrosion resistance, high temperature resistance, no creep deformation, good toughness and fatigue resistance, and can reduce the weight of the material. The effect of superfine triple superphosphate is the proportion of increase material, avoid the buoyancy too big in the environment of buoyancy, influence the atress of pipeline, it is impaired to avoid the pipeline bending, the effect of coupling agent is the mobility at the molten condition that improves the material, reduce the degree of difficulty of processing, reduce the resistance in the processing passageway, because behind glass fiber and carbon fiber as the additive, destroy the surface tension of flowing material easily, increase the frictional force of material, reduce the resistance that flows through the coupling agent, and effect when improving the drawing of patterns shaping.

Furthermore, the coupling agent comprises oxidized polyethylene wax, and the weight ratio of the oxidized polyethylene wax to the coupling agent is 0.3-0.8% of the total weight.

The oxidized polyethylene wax has good dispersibility, excellent external lubricity and strong internal lubrication effect, has good lubrication effect on materials added with glass fiber and carbon fiber, can improve the diffusivity of raw materials, better disperses carbon black for coloring in the materials and has better quality.

Further, the screw extruder is a double-screw extruder, and the heating temperature of the screw extruder is 180-220 ℃. The twin-screw extruder can increase extrusion pressure, improve the flowability of a material body, reduce resistance, increase temperature relative to traditional processing, and improve temperature uniformity.

Furthermore, the forming die is a cylindrical sleeve and is provided with an axial rotating driving device, the sleeve is sleeved with the inner layer of the winding pipe, and the melt discharged from the extrusion port of the spiral extruder is spirally wound on the surface of the inner layer of the winding pipe and is solidified and formed.

Furthermore, a water spraying head is arranged on the forming die, a water spraying part of the water spraying head is correspondingly arranged on the surface of the solidified melt, and the water outlet of the water spraying head is sprayed on the surface of the winding pipe. Due to winding of the tube

Compared with the prior art, the invention has the following advantages and effects: aiming at the problems of poor flowing and forming defects in the forming process of high-modulus pipes, the process improves the forming efficiency of high-modulus pipes by using a mode of premixing and combining a screw extruder to work cooperatively, improves the fluidity of pipe molten materials, reduces the forming defects, reduces the forming difficulty of the pipes, is suitable for large-scale production and processing, and improves the economic benefit.

Detailed Description

The present invention is further illustrated by the following examples, which are illustrative of the present invention and are not to be construed as being limited thereto.