PVC (polyvinyl chloride) bonding environment-friendly glue and production process

Abstract

The invention provides PVC (Polyvinyl Chloride) bonding environment-friendly glue and a production process. The PVC bonding environment-friendly glue is prepared from 15 to 20 parts of thermoplastic polyurethane elastomer rubber, 1 to 6 parts of chloroprene rubber, 1 to 5 parts of chlorinated polyvinyl chloride, 4 to 8 parts of tackifying resin, 2 to 5 parts of diluent, 1 to 5 parts of curing agent, 0.25 to 0.5 part of silicon dioxide, 0.1 to 0.5 part of light stabilizer, 0.15 to 0.5 part of anti-aging agent, 65 to 70 parts of mixed solvent and 3 to 8 parts of tributyl citrate. According to the PVC bonding environment-friendly glue provided by the invention, the tributyl citrate is added into the raw materials of the PVC glue, so that the flexibility of the glue can be remarkably improved, the glue can better adapt to deformation and bending of a material when being used for bonding the PVC material, the bonding reliability and durability are improved, and meanwhile, the environment-friendly performance of the PVC bonding environment-friendly glue is improved.

Description

Technical Field

[0001] The invention relates to the field of PVC glue for air mattresses, and in particular to environmentally friendly PVC bonding glue and a production process. Background Art

[0002] PVC glue is an adhesive specially used for bonding polyvinyl chloride materials. It can make the surface of PVC materials tightly bond together through chemical or physical effects to form a solid whole to meet the bonding needs of different PVC products during production, processing and use.

[0003] In order to improve the performance of PVC glue, suitable plasticizers are now added. However, traditional plasticizers are phthalate plasticizers. Although they have a good plasticizing effect, they have estrogen-like effects and will reduce the environmental friendliness of PVC glue.

[0004] Therefore, it is necessary to provide a PVC bonding environmentally friendly glue to solve the above-mentioned technical problems. Summary of the invention

[0005] The invention provides an environmentally friendly glue for bonding PVC, which solves the problem that although the traditional plasticizer is a phthalate plasticizer, the plasticizing effect is good, but the estrogen-like effect exists, which reduces the environmental protection of the PVC glue.

[0006] In order to solve the above technical problems, the present invention provides a PVC bonding environmentally friendly glue and a production process, comprising:

[0007] 15-20 parts of thermoplastic polyurethane elastomer rubber, 1-6 parts of chloroprene rubber, 1-5 parts of chlorinated polyvinyl chloride, 4-8 parts of tackifying resin, 2-5 parts of diluent, 1-5 parts of curing agent, 0.25-0.5 parts of silicon dioxide, 0.1-0.5 parts of light stabilizer, 0.15-0.5 parts of antioxidant, 65-70 parts of mixed solvent and 3-8 parts of tributyl citrate.

[0008] A production process of PVC bonding environmentally friendly glue comprises the following steps:

[0009] S1. Raw material preparation: First, use a high-precision electronic scale and a measuring cup to prepare 16 parts of thermoplastic polyurethane elastomer rubber, 3 parts of chloroprene rubber, 2 parts of chlorinated polyvinyl chloride, 4 parts of tackifying resin, 2.5 parts of diluent, 3 parts of curing agent, 0.5 parts of silicon dioxide, 0.4 parts of light stabilizer, 0.5 parts of antioxidant, 65 parts of mixed solvent and 8 parts of tributyl citrate, and after the raw materials are prepared, use metal sealed containers and glass reagent bottles with sealed lids to store the solid and liquid raw materials respectively;

[0010] S2, preheating and preliminary stirring of the mixed solvent: 65 parts of the mixed solvent are added into a reactor equipped with a stirrer, a thermometer and a reflux condenser, and then the reactor is started and the speed of the reactor is set to between 300 and 350 rpm to stir the mixed solvent;

[0011] S3, dissolving thermoplastic polyurethane elastomer rubber and chloroprene rubber: slowly add 16 parts of thermoplastic polyurethane elastomer rubber and 3 parts of chloroprene rubber into the reactor containing the preheated mixed solvent in S1, then restart the reactor, control the stirring speed of the reactor at 300 rpm and continue stirring for 3-4 hours until the thermoplastic polyurethane elastomer rubber and chloroprene rubber are completely dissolved, to obtain a mixture A;

[0012] S4, adding chlorinated polyvinyl chloride and tackifying resin: adding 2 parts of chlorinated polyvinyl chloride and 4 parts of tackifying resin into the reactor containing mixture A, then restarting the reactor, reducing the speed of the working reactor to between 200-250 rpm, and raising the temperature of the reactor to between 80-85° C., so that the chlorinated polyvinyl chloride and the tackifying resin are fully dispersed and dissolved in the mixture, to obtain mixture B;

[0013] S5. Adding tributyl citrate: 8 parts of tributyl citrate are slowly added into the reactor containing mixture B in S4, and then the reactor is started and the speed of the reactor is adjusted to between 150 and 200 rpm, while the temperature of the reactor is maintained between 80 and 85° C., and stirring is continued for 30 to 45 minutes to obtain mixture C;

[0014] S6, adding silica, light stabilizer and antioxidant: firstly, lower the temperature of the reactor to 40°C, then add 0.5 parts of silica and start the reactor. At the same time, set the speed of the reactor to 355 rpm and stir at high speed for 35 minutes to evenly disperse the silica. Then, add 0.4 parts of light stabilizer and 0.5 parts of antioxidant in sequence and continue stirring the reactor for 25 minutes to obtain a mixture D.

[0015] S7, adjustment of diluent and curing agent: according to the final viscosity of the required glue, slowly add 2.5 parts of diluent to adjust, at the same time, according to the established curing requirements, add 3 parts of curing agent and stir the reactor for 15 minutes to mix the glue evenly, and finally obtain the finished glue;

[0016] S8. Perform a performance test on the finished glue obtained in S7, and use a filling machine to package and store it after it passes the test.

[0017] Preferably, in S2, the temperature of the reaction kettle is set to between 70-75° C., so that the temperature inside the mixed solvent can be uniform.

[0018] Preferably, the temperature of the reactor in S3 is set between 75-80°C.

[0019] Preferably, the tributyl citrate in S5 is used as a plasticizer to better improve the flexibility of the glue and its wettability to PVC.

[0020] Preferably, a mixing device is required when mixing liquids in S1, and the mixing device includes a reactor body, and protective components are symmetrically arranged on the surface of the reactor body. The protective components include a protective cover, and a plurality of protective blocks are bonded to the inner wall of the protective cover, and a fixing component is arranged between the protective cover and the reactor body.

[0021] Preferably, the fixing assembly comprises a fixing hoop, one side of the fixing hoop is connected to a fixing rod, one end of the fixing rod is connected to a fixing block, and one side of the fixing block is connected to the surface of the protective cover.

[0022] Preferably, a limiting bolt is provided on one side of the fixing hoop.

[0023] Preferably, a partition assembly is provided at the bottom of the reactor body, and the partition assembly comprises a mounting hoop, and round rods are connected to both the left and right sides of the mounting hoop.

[0024] Preferably, a mounting box is connected between the two circular rods, and a plurality of connecting tubes are connected to the sides of the mounting box.

[0025] Compared with the related art, the PVC bonding environmentally friendly glue provided by the present invention has the following beneficial effects:

[0026] The invention provides an environmentally friendly glue for bonding PVC. Adding tributyl citrate into the raw materials of the PVC glue can significantly improve the flexibility of the glue, so that the glue can better adapt to the deformation and bending of the material when bonding the PVC material, improve the reliability and durability of the bonding, and simultaneously improve the environmental performance of the environmentally friendly glue for bonding PVC. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a second embodiment of a PVC bonding environmentally friendly glue provided by the present invention;

[0028] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0029] Figure 3 for Figure 1 A schematic diagram of the overall three-dimensional structure of the device shown;

[0030] Figure 4 for Figure 3An enlarged schematic diagram of part B is shown;

[0031] Figure 5 This is a schematic structural diagram of a third embodiment of a PVC bonding environmentally friendly glue provided by the present invention.

[0032] Numbers in the figure: 1. Reactor body; 2. Protection assembly; 21. Protection cover; 22. Protection block; 3. Fixing assembly; 31. Fixing hoop; 32. Fixing rod; 33. Fixing block; 34. Limit bolt; 4. Partition assembly; 41. Mounting hoop; 42. Round rod; 43. Mounting box; 44. Connecting tube. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0034] First embodiment

[0035] A PVC bonding environmentally friendly glue and production process, comprising:

[0036] 15-20 parts of thermoplastic polyurethane elastomer rubber, 1-6 parts of chloroprene rubber, 1-5 parts of chlorinated polyvinyl chloride, 4-8 parts of tackifying resin, 2-5 parts of diluent, 1-5 parts of curing agent, 0.25-0.5 parts of silicon dioxide, 0.1-0.5 parts of light stabilizer, 0.15-0.5 parts of antioxidant, 65-70 parts of mixed solvent and 3-8 parts of tributyl citrate.

[0037] A production process of PVC bonding environmentally friendly glue comprises the following steps:

[0038] S1. Raw material preparation: First, use a high-precision electronic scale and a measuring cup to prepare 16 parts of thermoplastic polyurethane elastomer rubber, 3 parts of chloroprene rubber, 2 parts of chlorinated polyvinyl chloride, 4 parts of tackifying resin, 2.5 parts of diluent, 3 parts of curing agent, 0.5 parts of silicon dioxide, 0.4 parts of light stabilizer, 0.5 parts of antioxidant, 65 parts of mixed solvent and 8 parts of tributyl citrate, and after the raw materials are prepared, use metal sealed containers and glass reagent bottles with sealed lids to store the solid and liquid raw materials respectively;

[0039] S2, preheating and preliminary stirring of the mixed solvent: 65 parts of the mixed solvent are added into a reactor equipped with a stirrer, a thermometer and a reflux condenser, and then the reactor is started and the speed of the reactor is set to between 300 and 350 rpm to stir the mixed solvent;

[0040] S3, dissolving thermoplastic polyurethane elastomer rubber and chloroprene rubber: slowly add 16 parts of thermoplastic polyurethane elastomer rubber and 3 parts of chloroprene rubber into the reactor containing the preheated mixed solvent in S1, then restart the reactor, control the stirring speed of the reactor at 300 rpm and continue stirring for 3-4 hours until the thermoplastic polyurethane elastomer rubber and chloroprene rubber are completely dissolved, to obtain a mixture A;

[0041] S4, adding chlorinated polyvinyl chloride and tackifying resin: adding 2 parts of chlorinated polyvinyl chloride and 4 parts of tackifying resin into the reactor containing mixture A, then restarting the reactor, reducing the speed of the working reactor to between 200-250 rpm, and raising the temperature of the reactor to between 80-85° C., so that the chlorinated polyvinyl chloride and the tackifying resin are fully dispersed and dissolved in the mixture, to obtain mixture B;

[0042] S5. Adding tributyl citrate: 8 parts of tributyl citrate are slowly added into the reactor containing mixture B in S4, and then the reactor is started and the speed of the reactor is adjusted to between 150 and 200 rpm, while the temperature of the reactor is maintained between 80 and 85° C., and stirring is continued for 30 to 45 minutes to obtain mixture C;

[0043] S6, adding silica, light stabilizer and antioxidant: firstly, lower the temperature of the reactor to 40°C, then add 0.5 parts of silica and start the reactor. At the same time, set the speed of the reactor to 355 rpm and stir at high speed for 35 minutes to evenly disperse the silica. Then, add 0.4 parts of light stabilizer and 0.5 parts of antioxidant in sequence and continue stirring the reactor for 25 minutes to obtain a mixture D.

[0044] S7, adjustment of diluent and curing agent: according to the final viscosity of the required glue, slowly add 2.5 parts of diluent to adjust, at the same time, according to the established curing requirements, add 3 parts of curing agent and stir the reactor for 15 minutes to mix the glue evenly, and finally obtain the finished glue;

[0045] S8. Perform a performance test on the finished glue obtained in S7, and use a filling machine to package and store it after it passes the test.

[0046] In the step S2, the temperature of the reaction kettle is set to between 70° C. and 75° C., so that the temperature inside the mixed solvent can be uniform.

[0047] The temperature of the reactor in S3 is set between 75-80°C.

[0048] The tributyl citrate in S5 as a plasticizer can better improve the flexibility of the glue and the wettability to PVC.

[0049] Compared with the related art, the PVC bonding environmentally friendly glue provided by the present invention has the following beneficial effects:

[0050] The invention provides an environmentally friendly glue for bonding PVC. Adding tributyl citrate into the raw materials of the PVC glue can significantly improve the flexibility of the glue, so that the glue can better adapt to the deformation and bending of the material when bonding the PVC material, improve the reliability and durability of the bonding, and simultaneously improve the environmental performance of the environmentally friendly glue for bonding PVC.

[0051] Second embodiment

[0052] Please refer to Figure 1 , Figure 2 and Figure 3 Based on the production process of a PVC bonding environmentally friendly glue provided in the first embodiment of the present application, the second embodiment of the present application proposes another production process of a PVC bonding environmentally friendly glue. The second embodiment is only a preferred method of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0053] Specifically, the difference of the production process of PVC bonding environmentally friendly glue provided in the second embodiment of the present application is that, in a production process of PVC bonding environmentally friendly glue, a mixing device is required when mixing the liquids in S1, and the mixing device includes a reactor body 1, and a protective component 2 is symmetrically arranged on the surface of the reactor body 1, and the protective component 2 includes a protective cover 21, and a plurality of protective blocks 22 are bonded to the inner wall of the protective cover 21, and a fixing component 3 is arranged between the protective cover 21 and the reactor body 1.

[0054] The two protective covers 21 are spliced ​​together to form a circle. The size of the protective cover 21 is adapted to the length of the cylinder of the reactor body 1 . The protective block 22 is used to weaken the impact force generated when an external object collides with the reactor body 1 .

[0055] The fixing assembly 3 includes a fixing hoop 31 , one side of the fixing hoop 31 is connected to a fixing rod 32 , one end of the fixing rod 32 is connected to a fixing block 33 , and one side of the fixing block 33 is connected to the surface of the protective cover 21 .

[0056] A limiting bolt 34 is disposed on one side of the fixing hoop 31 .

[0057] The working principle of the production process of a PVC bonding environmentally friendly glue provided by the present invention is as follows:

[0058] When in use, when protecting the surface of the reactor body 1, firstly, two protective covers 21 with multiple protective blocks 22 are mounted on the surface of the reactor body 1, and at the same time, the fixing hoop 31 connected by the fixing rod 32 at the bottom of the protective cover 21 is mounted on the support leg at the bottom of the reactor body 1, and finally, the fixing hoop 31 is tightened with the limit bolt 34.

[0059] Compared with the related art, the production process of a PVC bonding environmentally friendly glue provided by the present invention has the following beneficial effects:

[0060] The present invention provides a PVC bonding environmentally friendly glue. Two protective covers 21 with multiple protective blocks 22 are arranged on the surface of the reactor body 1 for use with a fixing component 3. When the reactor body 1 is in use, it can protect the outside and prevent damage caused by bumps.

[0061] Third embodiment

[0062] Please refer to Figure 4 and Figure 5 Based on the production process of a PVC bonding environmentally friendly glue provided in the first embodiment of the present application, the third embodiment of the present application proposes another production process of a PVC bonding environmentally friendly glue. The third embodiment is only a preferred method of the first embodiment, and the implementation of the third embodiment will not affect the independent implementation of the first embodiment.

[0063] Specifically, the difference of the production process of PVC bonding environmentally friendly glue provided in the third embodiment of the present application is that, in a production process of PVC bonding environmentally friendly glue, a partition component 4 is provided at the bottom of the reactor body 1, and the partition component 4 includes a mounting hoop 41, and the left and right sides of the mounting hoop 41 are connected with a circular rod 42.

[0064] The mounting hoop 41 is installed at the bottom of the reactor body 1, and the mounting box 43 is open to facilitate the installation of different pipelines. The use of multiple connecting tubes 44 facilitates the protection and separation of the extended parts of the pipelines installed at the bottom of the reactor body 1. The surface of the connecting tube 44 is provided with a mounting groove to facilitate the placement of the pipeline.

[0065] An installation box 43 is connected between the two circular rods 42 , and a plurality of connection tubes 44 are connected to the sides of the installation box 43 .

[0066] The working principle of the production process of a PVC bonding environmentally friendly glue provided by the present invention is as follows:

[0067] When in use, the installation box 43 with a plurality of connection tubes 44 is installed at the bottom of the reactor body 1 through the installation hoop 41, and then the pipeline passes through the connection tube 44 and the installation box 43 and is connected to the reactor body 1.

[0068] Compared with the related art, the production process of a PVC bonding environmentally friendly glue provided by the present invention has the following beneficial effects:

[0069] The present invention provides a PVC bonding environmentally friendly glue. A partition component 4 is arranged at the bottom of a reactor body 1 to facilitate separation and protection when different pipelines are connected to the reactor body 1.

[0070] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PVC bonding environmentally friendly glue and production process, characterized in that: include: 15-20 parts of thermoplastic polyurethane elastomer rubber, 1-6 parts of chloroprene rubber, 1-5 parts of chlorinated polyvinyl chloride, 4-8 parts of tackifying resin, 2-5 parts of diluent, 1-5 parts of curing agent, 0.25-0.5 parts of silicon dioxide, 0.1-0.5 parts of light stabilizer, 0.15-0.5 parts of antioxidant, 65-70 parts of mixed solvent and 3-8 parts of tributyl citrate.

2. A production process for PVC bonding environmentally friendly glue, characterized in that: The following steps are involved: S1. Raw material preparation: First, use a high-precision electronic scale and a measuring cup to prepare 16 parts of thermoplastic polyurethane elastomer rubber, 3 parts of chloroprene rubber, 2 parts of chlorinated polyvinyl chloride, 4 parts of tackifying resin, 2.5 parts of diluent, 3 parts of curing agent, 0.5 parts of silicon dioxide, 0.4 parts of light stabilizer, 0.5 parts of antioxidant, 65 parts of mixed solvent and 8 parts of tributyl citrate, and after the raw materials are prepared, use metal sealed containers and glass reagent bottles with sealed lids to store the solid and liquid raw materials respectively; S2, preheating and preliminary stirring of the mixed solvent: 65 parts of the mixed solvent are added into a reactor equipped with a stirrer, a thermometer and a reflux condenser, and then the reactor is started and the speed of the reactor is set to between 300 and 350 rpm to stir the mixed solvent; S3, dissolving thermoplastic polyurethane elastomer rubber and chloroprene rubber: slowly add 16 parts of thermoplastic polyurethane elastomer rubber and 3 parts of chloroprene rubber into the reactor containing the preheated mixed solvent in S1, then restart the reactor, control the stirring speed of the reactor at 300 rpm and continue stirring for 3-4 hours until the thermoplastic polyurethane elastomer rubber and chloroprene rubber are completely dissolved, to obtain a mixture A; S4, adding chlorinated polyvinyl chloride and tackifying resin: adding 2 parts of chlorinated polyvinyl chloride and 4 parts of tackifying resin into the reactor containing mixture A, then restarting the reactor, reducing the speed of the working reactor to between 200-250 rpm, and raising the temperature of the reactor to between 80-85° C., so that the chlorinated polyvinyl chloride and the tackifying resin are fully dispersed and dissolved in the mixture, to obtain mixture B; S5. Adding tributyl citrate: 8 parts of tributyl citrate are slowly added into the reactor containing mixture B in S4, and then the reactor is started and the speed of the reactor is adjusted to between 150 and 200 rpm, while the temperature of the reactor is maintained between 80 and 85° C., and stirring is continued for 30 to 45 minutes to obtain mixture C; S6, adding silica, light stabilizer and antioxidant: firstly, lower the temperature of the reactor to 40°C, then add 0.5 parts of silica and start the reactor. At the same time, set the speed of the reactor to 355 rpm and stir at high speed for 35 minutes to evenly disperse the silica. Then, add 0.4 parts of light stabilizer and 0.5 parts of antioxidant in sequence and continue stirring the reactor for 25 minutes to obtain a mixture D. S7, adjustment of diluent and curing agent: according to the final viscosity of the required glue, slowly add 2.5 parts of diluent to adjust, at the same time, according to the established curing requirements, add 3 parts of curing agent and stir the reactor for 15 minutes to mix the glue evenly, and finally obtain the finished glue; S8. Perform a performance test on the finished glue obtained in S7, and use a filling machine to package and store it after it passes the test.

3. The production process of PVC bonding environmentally friendly glue according to claim 2 is characterized in that: In the step S2, the temperature of the reaction kettle is set to between 70° C. and 75° C., so that the temperature inside the mixed solvent can be uniform.

4. The production process of PVC bonding environmentally friendly glue according to claim 2 is characterized in that: The temperature of the reactor in S3 is set between 75-80°C.

5. The production process of PVC bonding environmentally friendly glue according to claim 3 is characterized in that: The tributyl citrate in S5 as a plasticizer can better improve the flexibility of the glue and the wettability to PVC.

6. The production process of PVC bonding environmentally friendly glue according to claim 1, characterized in that: When mixing liquids in S1, a mixing device is required, and the mixing device includes a reactor body, and protective components are symmetrically arranged on the surface of the reactor body. The protective components include a protective cover, and a plurality of protective blocks are bonded to the inner wall of the protective cover. A fixing component is arranged between the protective cover and the reactor body.

7. The production process of PVC bonding environmentally friendly glue according to claim 6, characterized in that: The fixing assembly comprises a fixing hoop, one side of the fixing hoop is connected to a fixing rod, one end of the fixing rod is connected to a fixing block, and one side of the fixing block is connected to the surface of the protective cover.

8. The production process of PVC bonding environmentally friendly glue according to claim 7, characterized in that: A limiting bolt is arranged on one side of the fixing hoop.

9. The production process of PVC bonding environmentally friendly glue according to claim 6, characterized in that: A partition assembly is arranged at the bottom of the reactor body. The partition assembly comprises a mounting hoop. Round rods are connected to both the left and right sides of the mounting hoop.

10. The production process of PVC bonding environmentally friendly glue according to claim 9, characterized in that: An installation box is connected between the two circular rods, and a plurality of connection tubes are connected to the sides of the installation box.

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