CN118832789A - Preparation method of outdoor wood-like building material based on ocean garbage high-molecular polymer recovery - Google Patents

Abstract

The invention belongs to outdoor wood-like building materials, and particularly relates to a preparation method of an outdoor wood-like building material based on ocean garbage high-molecular polymer recovery. The preparation process is reasonable, the design is ingenious, the high polymer reclaimed materials are mechanically crushed to be used as raw materials of the wood-like building materials, the high polymer composite plastic elastomer material is coated with the ocean garbage inside the product by the double-channel emission time difference, the ocean garbage is used as a filling material, and then the ocean garbage is changed into the wood-like building materials such as outdoor railings or floors through a plastic wood grain thermal transfer printing method, so that the wood-like building materials can be recycled, and the aims of protecting the environment, protecting the environment and reducing the carbon are achieved.

Description

A preparation method for outdoor imitation wood building materials based on marine garbage high molecular polymer recycling

Technical Field

The invention belongs to outdoor imitation wood building materials, and in particular relates to a preparation method of outdoor imitation wood building materials based on marine garbage high molecular polymer recycled materials.

Background Art

Marine debris refers to persistent, man-made or processed solid waste in the marine and coastal environment. Some of these marine debris stay on the beach, while others can float on the sea surface or sink to the bottom of the sea. Monitoring results show that the floating debris on the sea surface mainly consists of plastic bags, floating wood, buoys and plastic bottles. The classified statistics of floating debris on the sea surface show that the largest amount of plastic debris accounts for 41%, followed by polystyrene plastic foam and wood products, accounting for 19% and 15% respectively. The beach debris mainly consists of plastic bags, cigarette butts, polystyrene plastic foam fast food boxes, fishing nets and glass bottles. The average number of beach debris is 0.80 pieces per 100 square meters, of which plastic debris accounts for the largest amount, accounting for 66%; polystyrene plastic foam, paper and fabric debris account for 8.5%, 7.6% and 5.8% respectively. The seabed debris mainly consists of glass bottles, plastic bags, beverage cans and fishing nets. The average number of seabed debris is 0.04 pieces per 100 square meters, and the average density is 62.1 grams per 100 square meters. After statistics, high molecular polymer type of garbage is the largest, accounting for 71.84%, followed by foam 8.17%, nylon 5.44%, rubber 5.06%, and plastic fragments are the most common type of garbage, 33.58% of the garbage is plastic fragments, followed by bottle caps 13.34%, followed by fishing foam 6.30%, cigarette butts 6.01%, ropes 4.08% and plastic bags 3.82%.

What humans really need to reflect on is how to control marine debris and reverse the growing trend of garbage.

The treatment of marine garbage is related to the land-based garbage treatment mode, but it also has its own unique way. There are three modes of land-based garbage treatment: sanitary landfill, incineration power generation, and comprehensive treatment (composting). The treatment of marine garbage can also be divided into at least three types: incineration power generation, resource conversion, and building artificial islands. However, no matter which one, the cost will be higher than the land-based garbage treatment because the cost of salvaging, transportation, and drying the garbage needs to be added.

Whether it is marine garbage or land garbage, there are some garbage that cannot be finely classified. The main components of the garbage are a variety of high molecular polymers (PE, PET, PE, PP, PU, PA, rubber and other high molecular polymers mixed), so recycling the above high molecular polymers is the key to garbage treatment.

Summary of the invention

The purpose of the present invention is to provide a method for preparing outdoor imitation wood building materials based on marine garbage polymer recycling materials. The preparation process is reasonable and the design is ingenious. The polymer recycling materials are mechanically crushed and used as raw materials for imitation wood building materials. The dual-channel injection time difference allows the polymer composite plastic elastomer material to wrap the marine garbage inside the product, and the marine garbage is used as a filler. Then, through the plastic wood grain thermal transfer method, the marine garbage is replaced by imitation wood building materials such as outdoor railings or floors, which can be recycled and reused, achieving the goal of protecting the environment and reducing carbon emissions.

In order to solve the above problems, the present invention relates to a method for preparing an outdoor imitation wood building material based on marine garbage polymer recycling, comprising the following steps:

(1) Garbage crushing and processing

The marine and land garbage that cannot be classified is put into the crushing equipment, and the crushed materials are obtained through the crushing process. The materials with a particle size greater than 0.5 cm are transported to the crushing equipment for secondary crushing, and the materials with a particle size less than 0.5 cm are crushed material A; after the crushed material A is washed and air-dried, it is screened again, and the materials with a particle size less than 0.5 cm are crushed material B;

(2) Preparation of polymer composite plastic elastomers

The weighed raw materials are mixed and put into a hot autoclave for hot pressing at a temperature of 180-200°C and a time of 5-7 minutes. The hot-pressed materials enter a tower reactor at a reaction temperature of 150-160°C and a time of 5-10 minutes. The reacted materials enter a kneading machine for kneading at a kneading temperature of 90-120°C and a time of 3-5 minutes. After kneading, a high molecular polymer composite plastic elastomer is obtained, and the melting point of the high molecular polymer composite plastic elastomer is 150°C.

(3) Preparation of outdoor imitation wood building materials

Weigh the crushed material B and the high molecular polymer composite plastic elastomer obtained in step (1) in a weight ratio of 1:1, and put the crushed material B and the high molecular polymer composite plastic elastomer into a double-channel heating device for heating treatment respectively;

The heated crushed material B and the polymer composite plastic elastomer are respectively conveyed to the dual-channel injection coating injection molding machine (the dual-channel injection coating injection molding machine is integrated and modified by 2 plastic injection molding machines and fixed molds). The dual-channel injection coating injection molding machine includes channel A and channel B. The polymer composite plastic elastomer is poured using channel A, and material B is poured using channel B. In channel B, material B is first poured into the center of the mold. The shape of the mold is a rectangular parallelepiped. After 5 minutes of pouring in channel B, the polymer composite plastic elastomer is poured into channel A. The mold must wait for 20-30 minutes after pouring and molding.

During the compression molding process, the mold is cooled by running water, and after cooling, the mold is demoulded by manual or automatic equipment. After demoulding, the product C is obtained, and the product C has a double-layer structure;

Product C is inspected for quality manually or by image recognition. Qualified products are processed with thermal transfer wood grain to be made into outdoor building materials such as outdoor floors, railings and walkways. Unqualified products and runner waste in the demoulding process are transported to the crushing equipment for crushing.

Preferably, during the preparation of the high molecular polymer composite plastic elastomer, the raw materials are weighed according to the following weight proportions: 55 parts of polystyrene, 35 parts of high density polyethylene, and 20 parts of polyethylene terephthalate.

Compared with the prior art, the technical solution of the present invention has the following advantages:

1. The present invention is the first to use a variety of polymer mixtures as raw materials. When the polymer composite plastic elastomer and a variety of polymer crushed materials (mostly 2-3 kinds on the market, mainly HDPE, PP, PS, and the present invention can use more than 10 kinds) are stirred and sent to the injection molding equipment mold, the polymer composite plastic elastomer is poured using channel A, and the various polymer crushed materials are poured using channel B. The B channel material is first poured into the center of the mold, and the A channel material fills the mold. After water cooling and demolding, the marine garbage product material developed by the present invention can form a two-layer inner and outer structure, and then heat transfer embossing is performed to form a plastic wood product.

2. The products of the present invention are all high molecular polymers, so they can be recycled and reused all the time, and even the scraps or runner wastes produced can be recycled and reproduced.

3. The product of the present invention is non-toxic and harmless: Compared with traditional wood, this process does not require the use of harmful chemical components in the manufacturing process, and there is no air pollution or water pollution, and there is no pollution to the human body and the environment.

4. Energy saving and emission reduction: The energy consumption of manufacturing the product of the present invention is much lower than that of log processing. At the same time, due to its long life, it can effectively reduce the amount of wood felling, which is beneficial to reducing air and water pollution.

5. The product of the present invention adopts high molecular polymer material, which makes it more durable and not easy to break, rot, deform, etc. Compared with traditional wood, it has a longer service life and does not need to be replaced frequently, which can effectively reduce maintenance costs.

6. The product of the present invention is made of high molecular polymer material, which has good anti-corrosion and waterproof effects. It will not swell due to water absorption, nor will it deform due to sun exposure. It can be used for a long time in different climate environments, and is even more superior in outdoor environments.

7. Since the surface layer of the product of the present invention is made of composite plastic material, it is easier to clean and maintain than traditional wood. It only needs to be simply cleaned with some detergent and water, without the need for complicated maintenance processes such as painting and waxing.

8. The product of the present invention can be recycled and reused, and the produced imitation wood building materials can reduce the felling of trees, promote green carbon reduction, and improve the living environment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a process flow chart of an embodiment.

FIG. 2 is a schematic cross-sectional view of product C.

DETAILED DESCRIPTION

In order to make the technical purpose, technical solution and beneficial effects of the present invention clearer, the technical solution of the present invention is further described below in conjunction with specific embodiments.

Example 1: A method for preparing outdoor imitation wood building materials based on marine garbage high molecular polymer recycling materials, comprising the following steps:

(1) Garbage crushing and processing

The marine and land garbage that cannot be classified is put into the crushing equipment, and the crushed materials are obtained through the crushing process. The materials with a particle size greater than 0.5 cm are transported to the crushing equipment for secondary crushing, and the materials with a particle size less than 0.5 cm are crushed material A; after the crushed material A is washed and air-dried, it is screened again, and the materials with a particle size less than 0.5 cm are crushed material B;

(2) Preparation of polymer composite plastic elastomers

The raw materials are weighed according to the following weight proportions: 50 parts of polystyrene, 40 parts of high-density polyethylene, and 15 parts of polyethylene terephthalate; the weighed raw materials are mixed and put into a hot autoclave for hot pressing at a temperature of 180°C and a time of 7 minutes; the hot-pressed materials enter a tower reactor at a reaction temperature of 150°C and a time of 10 minutes; the reacted materials enter a kneading machine for kneading at a kneading temperature of 90°C and a time of 5 minutes; after kneading, a high-molecular polymer composite plastic elastomer is obtained, and the melting point of the high-molecular polymer composite plastic elastomer is 150°C.

(3) Preparation of outdoor imitation wood building materials

Weigh the crushed material B and the high molecular polymer composite plastic elastomer obtained in step (1) in a weight ratio of 1:1, and put the crushed material B and the high molecular polymer composite plastic elastomer into a double-channel heating device for heating treatment respectively;

The heated crushed material B and the polymer composite plastic elastomer are respectively conveyed to the dual-channel injection coating injection molding machine (the dual-channel injection coating injection molding machine is modified by integrating 2 plastic injection molding machines and fixed molds). The dual-channel injection coating injection molding machine includes channel A and channel B. The polymer composite plastic elastomer is poured using channel A, and material B is poured using channel B. In channel B, material B is first poured into the center of the mold. The shape of the mold is a rectangular parallelepiped. After 5 minutes of pouring in channel B, the polymer composite plastic elastomer is poured into channel A. The mold must wait for 30 minutes after pouring and molding.

During the compression molding process, the mold is cooled by running water, and after cooling, the mold is demoulded by manual or automatic equipment. After demoulding, the product C is obtained, and the product C has a double-layer structure;

Product C is inspected for quality manually or by image recognition. Qualified products are processed with thermal transfer wood grain to be made into outdoor building materials such as outdoor floors, railings and walkways. Unqualified products and runner waste in the demoulding process are transported to the crushing equipment for crushing.

Example 2: A method for preparing outdoor imitation wood building materials based on marine garbage polymer recycling, comprising the following steps:

(1) Garbage crushing and processing

The marine and land garbage that cannot be classified is put into the crushing equipment, and the crushed materials are obtained through the crushing process. The materials with a particle size greater than 0.5 cm are transported to the crushing equipment for secondary crushing, and the materials with a particle size less than 0.5 cm are crushed material A; after the crushed material A is washed and air-dried, it is screened again, and the materials with a particle size less than 0.5 cm are crushed material B;

(2) Preparation of polymer composite plastic elastomers

The raw materials are weighed according to the following weight proportions: 60 parts of polystyrene, 30 parts of high-density polyethylene, and 25 parts of polyethylene terephthalate; the weighed raw materials are mixed and put into a hot autoclave for hot pressing at a temperature of 200° C. and a time of 5 minutes; the hot-pressed materials enter a tower reactor at a reaction temperature of 150° C. and a time of 10 minutes; the reacted materials enter a kneading machine for kneading at a kneading temperature of 90° C. and a time of 5 minutes; after kneading, a high-molecular polymer composite plastic elastomer is obtained, and the melting point of the high-molecular polymer composite plastic elastomer is 150° C.

(3) Preparation of outdoor imitation wood building materials

Weigh the crushed material B and the high molecular polymer composite plastic elastomer obtained in step (1) in a weight ratio of 1:1, and put the crushed material B and the high molecular polymer composite plastic elastomer into a double-channel heating device for heating treatment respectively;

The heated crushed material B and the polymer composite plastic elastomer are respectively conveyed to the dual-channel injection coating injection molding machine (the dual-channel injection coating injection molding machine is integrated and modified by 2 plastic injection molding machines and fixed molds). The dual-channel injection coating injection molding machine includes channel A and channel B. The polymer composite plastic elastomer is poured using channel A, and material B is poured using channel B. In channel B, material B is first poured into the center of the mold. The shape of the mold is a rectangular parallelepiped. After 5 minutes of pouring in channel B, the polymer composite plastic elastomer is poured into channel A. The mold must wait for 20 minutes after pouring and molding.

During the compression molding process, the mold is cooled by running water, and after cooling, the mold is demoulded by manual or automatic equipment. After demoulding, the product C is obtained, and the product C has a double-layer structure;

Product C is inspected for quality manually or by image recognition. Qualified products are processed with thermal transfer wood grain to be made into outdoor building materials such as outdoor floors, railings and walkways. Unqualified products and runner waste in the demoulding process are transported to the crushing equipment for crushing.

Example 3: A method for preparing outdoor imitation wood building materials based on marine garbage high molecular polymer recycling materials, comprising the following steps:

(1) Garbage crushing and processing

The marine and land garbage that cannot be classified is put into the crushing equipment, and the crushed materials are obtained through the crushing process. The materials with a particle size greater than 0.5 cm are transported to the crushing equipment for secondary crushing, and the materials with a particle size less than 0.5 cm are crushed material A; after the crushed material A is washed and air-dried, it is screened again, and the materials with a particle size less than 0.5 cm are crushed material B;

(2) Preparation of polymer composite plastic elastomers

The raw materials are weighed according to the following weight proportions: 55 parts of polystyrene, 35 parts of high-density polyethylene, and 20 parts of polyethylene terephthalate; the weighed raw materials are mixed and put into a hot autoclave for hot pressing at a temperature of 180°C and a time of 7 minutes; the hot-pressed materials enter a tower reactor at a reaction temperature of 150°C and a time of 5 minutes; the reacted materials enter a kneading machine for kneading at a kneading temperature of 120°C and a time of 3 minutes; after kneading, a high-molecular polymer composite plastic elastomer is obtained, and the melting point of the high-molecular polymer composite plastic elastomer is 150°C.

(3) Preparation of outdoor imitation wood building materials

Weigh the crushed material B and the high molecular polymer composite plastic elastomer obtained in step (1) in a weight ratio of 1:1, and put the crushed material B and the high molecular polymer composite plastic elastomer into a double-channel heating device for heating treatment respectively;

The heated crushed material B and the polymer composite plastic elastomer are respectively conveyed to the dual-channel injection coating injection molding machine (the dual-channel injection coating injection molding machine is integrated and modified by 2 plastic injection molding machines and fixed molds). The dual-channel injection coating injection molding machine includes channel A and channel B. The polymer composite plastic elastomer is poured using channel A, and material B is poured using channel B. In channel B, material B is first poured into the center of the mold. The shape of the mold is a rectangular parallelepiped. After 5 minutes of pouring in channel B, the polymer composite plastic elastomer is poured into channel A. The mold must wait for 25 minutes after injection and compression molding.

During the compression molding process, the mold is cooled by running water, and after cooling, the mold is demoulded by manual or automatic equipment. After demoulding, the product C is obtained, and the product C has a double-layer structure;

Product C is inspected for quality manually or by image recognition. Qualified products are processed with thermal transfer wood grain to be made into outdoor building materials such as outdoor floors, railings and walkways. Unqualified products and runner waste in the demoulding process are transported to the crushing equipment for crushing.

Among the above embodiments, Embodiment 3 is the best embodiment.

Finally, it should be noted that the above embodiments are only used to illustrate but not limit the technical solutions of the present invention, and any equivalent substitutions of the present invention and any modifications or partial substitutions that do not depart from the spirit and scope of the present invention should be included in the scope of protection of the claims of the present invention.

Claims (2)

1. A method for preparing outdoor imitation wood building materials based on marine garbage high molecular polymer recycling materials, characterized in that it comprises the following steps: (1) Garbage crushing and processing The marine and land garbage that cannot be classified is put into the crushing equipment, and the crushed materials are obtained through the crushing process. The materials with a particle size greater than 0.5 cm are transported to the crushing equipment for secondary crushing, and the materials with a particle size less than 0.5 cm are crushed material A; after the crushed material A is washed and air-dried, it is screened again, and the materials with a particle size less than 0.5 cm are crushed material B; (2) Preparation of polymer composite plastic elastomers Weigh the raw materials according to the following weight proportions: 50-60 parts of polystyrene, 30-40 parts of high-density polyethylene, and 15-25 parts of polyethylene terephthalate; mix the weighed raw materials and put them into a hot autoclave for hot pressing at a temperature of 180-200°C and a time of 5-7 minutes; the hot-pressed materials enter a tower reactor at a reaction temperature of 150-160°C and a time of 5-10 minutes; the reacted materials enter a kneading machine for kneading at a kneading temperature of 90-120°C and a time of 3-5 minutes; after kneading, a polymer composite plastic elastic body is obtained, and the melting point of the polymer composite plastic elastomer is 150°C; (3) Preparation of outdoor imitation wood building materials Weigh the crushed material B and the high molecular polymer composite plastic elastomer obtained in step (1) in a weight ratio of 1:1, and put the crushed material B and the high molecular polymer composite plastic elastomer into a double-channel heating device for heating treatment respectively; The heated crushed material B and the polymer composite plastic elastomer are respectively conveyed to the dual-channel injection coating injection molding machine (the dual-channel injection coating injection molding machine is integrated and modified by 2 plastic injection molding machines and fixed molds). The dual-channel injection coating injection molding machine includes channel A and channel B. The polymer composite plastic elastomer is poured through channel A, and material B is poured through channel B. In channel B, material B is first poured into the center of the mold. The shape of the mold is a rectangular parallelepiped. After 5 minutes of pouring through channel B, the polymer composite plastic elastomer is poured into channel A. The mold needs to wait for 20-30 minutes after the injection and compression molding. During the compression molding process, the mold is cooled by running water, and after cooling, the mold is demoulded by manual or automatic equipment. After demoulding, the product C is obtained, and the product C has a double-layer structure; Product C is inspected for quality manually or by image recognition. Qualified products are processed with thermal transfer wood grain to be made into outdoor building materials such as outdoor floors, railings and walkways. Unqualified products and runner waste in the demoulding process are transported to the crushing equipment for crushing. 2. The method for preparing an outdoor imitation wood building material based on marine garbage polymer recycling according to claim 1 is characterized in that: during the preparation of the polymer composite plastic elastomer, the raw materials are weighed according to the following weight parts: 55 parts of polystyrene, 35 parts of high-density polyethylene, and 20 parts of polyethylene terephthalate.