阅读说明：本技术 一种镁塑高分子模板的制备方法 (Preparation method of magnesium-plastic polymer template ) 是由 肖纯进 于 2021-09-08 设计创作，主要内容包括：本发明公开了一种镁塑高分子模板的制备方法,制备第一碎料,所述第一碎料的直径不大于2cm,所述第一碎料为塑料；制备第二碎料,所述第二碎料的直径不在于2cm,所述第二碎料为木屑；制备第三碎料,所述第三碎料的直径不在于2cm,所述第二碎料为橡胶；制备混合料,制备模板,将混合料装入模具,模具内上、下表面放置保护膜,加热、冷却定型后裁边制成模板,在模板上设置薄膜。本发明稳定性耐候性强,机械强度高,在-20℃～70℃条件下,不收缩,不变形,不怕水,尺寸稳定,耐碱防寒,有较好的力学性能和电绝缘性能,易于养护,且该模板上设有薄膜,脱模后表面美观,光洁度高,省工省料,重量轻,工艺适应性强,灵活满足各种相撞建筑的支模需要。(The invention discloses a preparation method of a magnesium-plastic polymer template, which comprises the steps of preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastic; preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips; preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber; preparing a mixture, preparing a template, filling the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating, cooling, shaping, cutting edges to prepare the template, and arranging a film on the template. The invention has strong stability and weather resistance, high mechanical strength, no shrinkage, no deformation, no water resistance, stable dimension, alkali resistance and cold resistance, better mechanical property and electrical insulation property at the temperature of-20-70 ℃, easy maintenance, beautiful surface after demoulding, high finish degree, labor and material saving, light weight and strong technological adaptability, and can flexibly meet the requirements of supporting moulds of various colliding buildings.)

1. A preparation method of a magnesium-plastic polymer template is characterized by comprising the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 1-2.5: 1: 0.3-0.7, and mixing and stirring to obtain a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 180-380 ℃, pressurizing at 86-157 Mpa for 10-30 minutes, cooling and shaping, cutting edges to prepare the template with the thickness of 0.5-20 cm, and arranging a film on the template.

2. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: the protective film is kraft paper or a magnesium plastic film.

3. The method for preparing the magnesium-plastic polymer template as claimed in claim 2, which is characterized in that: and laying waste polypropylene packaging bags on the inner surface of the protective film.

4. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: the first, second and third crushed aggregates are all granular.

5. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: the first crushed aggregates are at least one of polyethylene, polyvinyl chloride, mulching films and greenhouse film wastes.

6. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: and the cooling temperature is 5-10 ℃ during the molding of the template.

7. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: the thickness of the film is 0.5 mm-1.7 mm.

8. The method for preparing the magnesium-plastic polymer template as claimed in claim 1, which is characterized in that: the template is connected with the film in an adhesion mode.

Technical Field

The invention belongs to the technical field of building materials, and particularly relates to a preparation method of a magnesium-plastic polymer template.

Background

At present, in order to meet the requirements of engineering construction and avoid the environmental influences such as water soaking, chemical substance corrosion and the like, the templates for the wood building in the prior art adopt a film coating method to coat a layer of phenanthrene paper or impregnated paper on the surface of a wood base material. The template product has certain waterproof and anti-corrosion performance, but still has the defects of poor waterproofness, poor corrosion resistance and the like, and the product is easy to damage in the processes of transportation, disassembly and use due to weak abrasion resistance, so that the product has short service cycle, high cost and is not favorable for environmental protection. In addition, the overall compressive resistance of the product is low, so that the quality of the construction engineering can be directly influenced, and the potential safety hazard exists in the construction engineering.

Disclosure of Invention

In order to solve the problems, the invention provides the preparation method of the recyclable polymer membrane plate, which utilizes waste plastics, has the advantages of easily available raw materials, low cost, simple manufacture, high strength, water resistance, acid and alkali resistance and more repeated use times.

The technical scheme of the invention is as follows: a preparation method of a magnesium-plastic polymer template comprises the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 1-2.5: 1: 0.3-0.7, and mixing and stirring to obtain a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 180-380 ℃, pressurizing at 86-157 Mpa for 10-30 minutes, cooling and shaping, cutting edges to prepare the template with the thickness of 0.5-20 cm, and arranging a film on the template.

Preferably, the protective film is kraft paper or a magnesium plastic film.

Preferably, the inner surface of the protective film is paved with waste polypropylene packaging bags.

Preferably, the first, second and third crushed aggregates are all in the form of particles.

Preferably, the first crushed aggregates are at least one of polyethylene, polyvinyl chloride, mulching film and greenhouse film waste.

Preferably, the cooling temperature during the molding of the template is 5 to 10 ℃.

Preferably, the film has a thickness of 0.5mm to 1.7 mm.

Preferably, the template and the film are connected by adhesion.

Compared with the prior art, the invention has the beneficial effects that: the invention utilizes waste plastics and sawdust or branches and forks, has easily obtained raw materials and low production cost; the manufacturing process is simple, hot-press molding is utilized, no adhesive is needed, the product has high strength, water resistance (deformation and cracking do not occur after being soaked in water for 120 hours), acid and alkali resistance (deformation and cracking do not occur after being soaked in 5% sulfuric acid and 5% alkaline water for 120 hours respectively), various technical indexes are superior to those of wood plywood, the wood plywood can be repeatedly used, can be recycled, has high stability and weather resistance and high mechanical strength, does not shrink and deform at the temperature of-20-70 ℃, is water-proof, stable in size, alkali-proof, waterproof, insect-proof, has good mechanical property and electrical insulation property, is easy to maintain, and the high polymer film arranged on the template ensures that the surface is attractive after demolding, has high smoothness, labor and material saving, light weight and strong technological adaptability, and flexibly meets the requirements of supporting molds of various colliding buildings.

Detailed Description

A preparation method of a magnesium-plastic polymer template comprises the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 1-2.5: 1: 0.3-0.7, and mixing and stirring to obtain a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 180-380 ℃, pressurizing at 86-157 Mpa for 10-30 minutes, cooling and shaping, cutting edges to prepare the template with the thickness of 0.5-20 cm, and arranging a film on the template.

Wherein: the protective film is kraft paper or a magnesium plastic film. And laying waste polypropylene packaging bags on the inner surface of the protective film.

The first, second and third crushed aggregates are all granular.

The first crushed aggregates are at least one of polyethylene, polyvinyl chloride, mulching films and greenhouse film wastes.

And the cooling temperature is 5-10 ℃ during the molding of the template.

The thickness of the film is 0.5 mm-1.7 mm.

The template is connected with the film in an adhesion mode.

Example 1

1. A preparation method of a magnesium-plastic polymer template is characterized by comprising the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 2.5: 1: 0.7, mixing and stirring to prepare a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 180-380 ℃, pressurizing at 86-157 Mpa for 10-30 minutes, cooling and shaping, wherein the cooling temperature is 5 ℃, cutting edges to prepare the template with the thickness of 0.5cm, and arranging a film on the template with the thickness of 0.5 mm.

Example 2

1. A preparation method of a magnesium-plastic polymer template is characterized by comprising the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 1: 1: 0.3, mixing and stirring to prepare a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 180 ℃, pressurizing at 86Mpa for 10 minutes, cooling and shaping, wherein the cooling temperature is 10 ℃, cutting edges to prepare the template with the thickness of 20cm, and arranging a film on the template, wherein the thickness of the film is 1 mm.

Example 3

1. A preparation method of a magnesium-plastic polymer template is characterized by comprising the following steps:

preparing first crushed aggregates, wherein the diameter of the first crushed aggregates is not more than 2cm, and the first crushed aggregates are plastics;

preparing second crushed aggregates, wherein the diameter of the second crushed aggregates is not less than 2cm, and the second crushed aggregates are wood chips;

preparing third crushed aggregates, wherein the diameter of the third crushed aggregates is not less than 2cm, and the second crushed aggregates are rubber;

preparing a mixture, namely mixing the first crushed aggregates, the second crushed aggregates and the third crushed aggregates according to the weight ratio of 2: 1: 0.5, mixing and stirring to prepare a mixture;

preparing a template, putting the mixture into a mold, placing protective films on the upper surface and the lower surface in the mold, heating at 300 ℃, pressurizing at 100Mpa for 20 minutes, cooling and shaping, wherein the cooling temperature is 7 ℃, cutting edges to prepare the template with the thickness of 10cm, and arranging a film on the template, wherein the thickness of the film is 1.7 mm.