阅读说明：本技术 一种复合井盖的制备方法 (Preparation method of composite well lid ) 是由 陈志强 于 2019-10-21 设计创作，主要内容包括：本发明公开了一种复合井盖的制备方法。所述复合井盖的制备方法包括以下步骤：将回收的废旧地膜和塑料清理干净后干燥,然后进行粉碎造粒,得到颗粒物,备用；向所述颗粒物中分别加入适量废镍砂及硅烷偶联剂,充分搅拌均匀得到混合物料；按重量份配比将所述混合物料放入高温环境中塑化,使得再生塑料由固态粒料转变为黏流态,加入适量固化剂,然后经过挤塑机挤出成料,将成料放入井盖模具中,压制成型；将成型后的井盖进行脱模,自然冷却至一定温度进行粗打磨,然后自然冷却至常温,进行精打磨,检验合格后入库即可。本发明提供一种复合井盖的制备方法,采用废旧地膜和塑料作为主要材料,提高了废物利用率。(The invention discloses a preparation method of a composite well lid. The preparation method of the composite well lid comprises the following steps: cleaning and drying the recovered waste mulching films and plastics, and then crushing and granulating to obtain particles for later use; respectively adding a proper amount of waste nickel sand and a silane coupling agent into the particles, and fully and uniformly stirring to obtain a mixed material; putting the mixed material into a high-temperature environment according to the weight part ratio for plasticizing so as to enable the regenerated plastic to be converted from solid granules into viscous flow state, adding a proper amount of curing agent, then extruding the mixture into a material through an extruder, putting the material into a well lid mold, and performing compression molding; and demolding the molded well lid, naturally cooling to a certain temperature for rough polishing, naturally cooling to normal temperature for fine polishing, and warehousing after the inspection is qualified. The invention provides a preparation method of a composite well lid, which adopts waste mulching films and plastics as main materials and improves the utilization rate of wastes.)

1. The preparation method of the composite well lid is characterized by comprising the following steps:

cleaning and drying the recovered waste mulching films and plastics, and then crushing and granulating to obtain particles for later use;

step two, respectively adding a proper amount of waste nickel sand and a silane coupling agent into the particles, and fully and uniformly stirring to obtain a mixed material;

step three, plasticizing the mixed material in a high-temperature environment according to the weight part ratio to convert the regenerated plastic from solid granules into viscous state, adding a proper amount of curing agent, extruding the mixture into a material by an extruder, putting the material into a well lid mold, and performing compression molding for 15-25 minutes;

and step four, demolding the molded well lid, naturally cooling to a certain temperature for rough polishing, naturally cooling to normal temperature for fine polishing, and warehousing after the inspection is qualified.

2. The preparation method of the composite well lid according to claim 1, wherein in the second step, the addition amount of the waste nickel sand is 40-50% of the weight of the particulate matter; the adding amount of the silane coupling agent is 1-2% of the weight of the particles.

3. The preparation method of the composite well lid according to claim 1, wherein in the third step, the temperature of the high-temperature environment is 120-150 ℃; the pressure of the pressing forming is 20-30 MPa.

4. The preparation method of the composite well lid according to claim 1, wherein in the third step, the addition amount of the curing agent is 5-7% of the weight of the mixed material.

Technical Field

The invention relates to the technical field of well lid processing, in particular to a preparation method of a composite well lid.

Background

The well cover of the observation well of the existing underground pipe network is mostly made of cast iron materials, nodular cast iron or polymer-based composite materials, and the phenomena of deformation, cracking, fragmentation and the like can often occur in the long-term use process, particularly when vehicles pass through the observation well, although some well covers are designed, reinforcing ribs are added, but the problems are not fundamentally solved. The main reasons for this are that the strength of the well cover cannot meet the requirement of long-term use, and the environmental stress cracking resistance, heat resistance, corrosion resistance and aging resistance are poor, so that the service life is influenced, and the well cover is frequently replaced.

Disclosure of Invention

The invention provides a preparation method of a composite well lid, which adopts waste mulching films and plastics as main materials, improves the utilization rate of wastes, and enhances the product performance by adding waste nickel sand, a silane coupling agent and a curing agent.

The invention provides a preparation method of a composite well lid, which comprises the following steps:

cleaning and drying the recovered waste mulching films and plastics, and then crushing and granulating to obtain particles for later use;

step two, respectively adding a proper amount of waste nickel sand and a silane coupling agent into the particles, and fully and uniformly stirring to obtain a mixed material;

step three, plasticizing the mixed material in a high-temperature environment according to the weight part ratio to convert the regenerated plastic from solid granules into viscous state, adding a proper amount of curing agent, extruding the mixture into a material by an extruder, putting the material into a well lid mold, and performing compression molding for 15-25 minutes;

and step four, demolding the molded well lid, naturally cooling to a certain temperature for rough polishing, naturally cooling to normal temperature for fine polishing, and warehousing after the inspection is qualified.

In a preferred embodiment of the preparation method of the composite well lid provided by the invention, in the second step, the adding amount of the waste nickel sand is 40-50% of the weight of the particulate matter; the adding amount of the silane coupling agent is 1-2% of the weight of the particles.

In a preferred embodiment of the preparation method of the composite well lid provided by the invention, in the third step, the temperature of the high-temperature environment is 120-150 ℃; the pressure of the pressing forming is 20-30 MPa.

In a preferred embodiment of the preparation method of the composite well lid provided by the invention, in the third step, the addition amount of the curing agent is 5-7% of the weight of the mixed material.

Compared with the prior art, the preparation method of the composite well lid provided by the invention has the following beneficial effects: the invention adopts waste mulching films and plastics as main materials, improves the utilization rate of wastes, and enhances the product performance by adding waste nickel sand, a silane coupling agent and a curing agent.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.