Automobile wire harness film containing environment-friendly flame retardant and preparation method of automobile wire harness film

Abstract

The invention relates to the technical field of C09J7 / 24, in particular to an automobile wire harness film containing an environment-friendly flame retardant and a preparation method thereof.The automobile wire harness film is at least prepared from, by weight, 80-120 parts of PVC powder, 1-3 parts of stabilizer, 30-50 parts of plasticizer, 20-50 parts of filler, 0-5 parts of lubricant, 1-10 parts of flame retardant and 5-15 parts of ultraviolet absorbent pigment. The automobile wire harness film provided by the invention has excellent flame-retardant effect and voltage breakdown resistance, and is low in cost, simple in production process and easy to realize large-scale industrial production, application and popularization.

Description

Technical Field

[0001] The invention relates to the technical field of C09J7 / 24, in particular to an automobile wiring harness film containing an environmentally friendly flame retardant and a preparation method thereof. Background Art

[0002] In the automotive industry, it is necessary to fix and wrap the automotive wires, so the wiring harness wrapping adhesive tape is born to meet customer needs. The wiring harness wrapping adhesive tape is an efficient automotive product wrapping technology that can fix the internal wiring harness of the car and effectively reduce the scattered, messy and irregular arrangement of the internal wires of the car. Therefore, with the rapid development of the automotive industry in recent years, the wiring harness wrapping adhesive tape has also been vigorously developed. With the demand of the domestic and foreign automotive markets in recent years and the increase in the intensity of the national environmental protection policy and the provision of consumer safety awareness, higher safety requirements are achieved for various parts used in the composition of the car. At present, the automotive wiring harness tape on the market is composed of PVC raw cloth film and pressure-sensitive adhesive. The flame retardant effect of the flame retardant tape is mainly achieved by antimony trioxide in the PVC raw cloth film. However, due to the fluctuations in market conditions in recent years, the price of antimony trioxide has continued to rise, resulting in high production costs for flame retardant tapes. A Chinese patent (publication number CN112708357A) discloses a flame-retardant, environmentally friendly adhesive tape for automotive wiring harness winding. The adhesive tape uses a paper tube core and a flame-retardant, halogen-free polyvinyl chloride mixture, a water-based environmentally friendly flame-retardant adhesive and a water-based environmentally friendly additive to overcome the problems of traditional wiring harness winding adhesive tapes, such as unpleasant odor, safety hazards and short service life. However, the overall production cost is high, the production process is complicated, and it is not easy to achieve large-scale industrial production and application promotion. Summary of the invention

[0003] In order to solve the above problems, the present invention provides an automotive wiring harness film containing an environmentally friendly flame retardant. By optimizing the formula system, the provided automotive wiring harness film has excellent flame retardant effect and anti-voltage breakdown effect, and has low cost and simple production process, and is easy to realize large-scale industrial production and application promotion.

[0004] On the one hand, the present invention provides an automotive wiring harness film containing an environmentally friendly flame retardant. The raw materials for its preparation include at least 80-120 parts of PVC powder, 1-3 parts of a stabilizer, 30-50 parts of a plasticizer, 20-50 parts of a filler, 0-5 parts of a lubricant, 1-10 parts of a flame retardant, and 5-15 parts of an ultraviolet absorber colorant, by weight.

[0005] As a preferred technical solution, the filler is selected from at least one of calcium powder, talcum powder, diatomaceous earth, titanium dioxide, and wood powder, preferably calcium powder.

[0006] As a preferred technical solution, the particle size of the calcium powder is 800-2000 mesh, preferably 800-1200 mesh.

[0007] As a preferred technical solution, the plasticizer is selected from at least one of dioctyl phthalate, diisononyl phthalate, dioctyl terephthalate, and epoxy soybean oil, preferably a combination of dioctyl phthalate and epoxy soybean oil.

[0008] Preferably, the mass ratio of dioctyl phthalate to epoxidized soybean oil is (30-50):(1-3), preferably 20:1.

[0009] The car wash harness film provided by the present invention simultaneously introduces dioctyl phthalate and epoxy soybean oil as plasticizers, and cooperates with calcium powder introduced into the system to effectively toughen and strengthen PVC, thereby meeting the mechanical performance requirements in actual application.

[0010] As a preferred technical solution, the stabilizer includes liquid barium zinc stabilizer and powdered calcium zinc stabilizer.

[0011] Preferably, the mass ratio of the liquid barium zinc stabilizer to the powdered calcium zinc stabilizer is (1-2):(0.1-1), preferably 1.6:0.5.

[0012] As a preferred technical solution, the flame retardant is selected from at least one of antimony trioxide, aluminum hydroxide, and an environmentally friendly composite flame retardant, preferably a combination of antimony trioxide and an environmentally friendly composite flame retardant.

[0013] Preferably, the mass ratio of antimony trioxide to the environmentally friendly composite flame retardant is (1-2):(2-7), preferably 1:2.

[0014] As a preferred technical solution, the environmentally friendly composite flame retardant is selected from at least one of Meiwang Chemical M+Iam s21, Qiyuan FR-30, Qiyuan NPE-101, Qiyuan NPE-101, and Guangdong Yuxing YT series.

[0015] Preferably, the environmentally friendly composite flame retardant is Guangdong Yuxing-YT-III.

[0016] Furthermore, the present invention effectively improves the flame retardant effect by optimizing the flame retardant system in the system including antimony trioxide and environmentally friendly composite flame retardant, especially by using Guangdong Yuxing YT series environmentally friendly composite flame retardant and antimony trioxide to ensure that the provided automotive wiring harness film will not smoke after burning.

[0017] In addition, the present invention optimizes the control of the addition amount of each raw material, so that the provided automotive wiring harness film has excellent anti-voltage breakdown performance, and better meets the actual use requirements in the field of automotive wiring harnesses.

[0018] On the other hand, the present invention provides a method for preparing an automotive wiring harness film containing an environmentally friendly flame retardant, which comprises at least the following steps: stirring and mixing PVC powder, stabilizer, plasticizer, filler, lubricant, flame retardant, and ultraviolet absorber colorant, and then sending them into an internal mixer for pre-plasticization, and then sending them to an extruder or a plasticizer for repeated plasticization and plasticization; after continuous calendering, they are deeply plasticized and calendered into a film, and then led out through a lead-off roller; after cooling and solidification, cutting and curling, the automotive wiring harness film is obtained.

[0019] Beneficial Effects

[0020] 1. The present invention provides an automotive wiring harness film containing an environmentally friendly flame retardant. By optimizing the formula system, the provided automotive wiring harness film has excellent flame retardant effect and anti-voltage breakdown effect, and has low cost, simple production process, and is easy to realize large-scale industrial production and application promotion.

[0021] 2. The car wash wiring harness film provided by the present invention, by simultaneously introducing dioctyl phthalate and epoxy soybean oil as plasticizers, combined with calcium powder introduced into the system, effectively toughens and reinforces PVC, thereby meeting the mechanical performance requirements in actual application.

[0022] 3. The flame retardant system in the present invention is optimized to include antimony trioxide and environmentally friendly composite flame retardant, thereby effectively improving the flame retardant effect, especially by using Guangdong Yuxing YT series environmentally friendly composite flame retardant and antimony trioxide to ensure that the provided automotive wiring harness film will not smoke after burning.

[0023] 4. The present invention optimizes the control of the amount of each raw material added, so that the provided automotive wiring harness film has excellent anti-voltage breakdown performance and better meets the actual use requirements in the automotive wiring harness field. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a flame retardant effect test diagram of the automotive wiring harness film provided in Examples 1-10, and the diagram corresponds to Examples 1-10 from left to right and from top to bottom.

[0025] Figure 2 This is a flame retardant effect test diagram of the automotive wiring harness film after gluing provided in Examples 5-10. From left to right and from top to bottom in the figure, it corresponds to Examples 5-10 respectively.

[0026] Figure 3 A comparison diagram of the combustion smoke of the automotive wiring harness film provided in Example 4 and Example 10, wherein the upper side of the diagram is Example 10 and the lower side is Example 4.

[0027] Figure 4 This is a test picture of the flame retardant effect of Xinfeng membrane and homemade membrane before coating with glue.

[0028] Figure 5 Test image of flame retardant effect of Xinfeng membrane and homemade membrane after coating with glue DETAILED DESCRIPTION

[0029] Examples 1-11

[0030] On the one hand, Examples 1-11 of the present invention provide an automotive wiring harness film containing an environmentally friendly flame retardant. The formula is shown in Table 1 in parts by weight.

[0031] Table 1

[0032]

[0033] Note: “ / ” in Table 1 means the addition amount of the corresponding raw material is 0.

[0034] On the other hand, embodiments 1-11 of the present invention provide a method for preparing an automotive wiring harness film containing an environmentally friendly flame retardant, comprising the following steps: stirring and mixing PVC powder, stabilizer, plasticizer, filler, lubricant, flame retardant, and ultraviolet absorber colorant, and then sending them into an internal mixer for pre-plasticization, and then conveying them to an extruder or a plasticizer for repeated plasticization and plasticization; after continuous calendering, they are deeply plasticized and calendered into a film, and then led out through a lead-away roller; after cooling and solidification, cutting and curling, the automotive wiring harness film is obtained.

[0035] Performance Testing Methods

[0036] 1. Flame retardant effect: The flame retardant effect of the automotive wiring harness films provided in Examples 1-11 was tested, the burning distance was tested, the flame resistance level was determined, and the smoke during combustion was observed. Three samples were tested in parallel for each example. The test results are shown in Tables 2 and Figure 1 , Figure 3 , refer to GB / T 15903-1995 (Test method for flame resistance of pressure-sensitive adhesive tapes - Suspension method), and refer to Table 3 for the classification standard of flame resistance.

[0037] 2. Glue was applied to the surface of the automotive wiring harness film provided in Examples 5-10 (the glue model J065 made by Shuocheng was used for coating, and the coating thickness was 12 mm, the same below), and then the flame retardant effect was tested. The test results are shown in Tables 2 and Figure 2 .

[0038] 3. The automotive wiring harness films provided in Examples 4 and 10 were subjected to voltage breakdown resistance tests. The test results are shown in Table 2.

[0039] 4. The flame retardant effect of Xinfeng film (brand: D131) and homemade film (brand: ZD131, Shuocheng) was tested before and after coating with glue. The test results are shown in Figure 4 , Figure 5 The flame retardant test burning distance of Xinfeng membrane and homemade membrane before and after coating with glue is ≥15cm, grade: 3 flame retardant.

[0040] Table 2

[0041]

[0042]

[0043]

[0044] Note: “-” in the table means not measured.

[0045] Table 3

[0046] Flame resistance grade Average burning length (mm) illustrate Level 0 Burn length = 0 Non-flammable (the ignition material burns out, but the sample does not burn) Level 1 0 < Combustion length ≤ 50 Self-extinguishing, good flame resistance Level 2 50 < burning length ≤ 150 Flammable, poor flame resistance Level 3 Burning length>150 flammable

Claims

1. An automotive wiring harness film containing an environmentally friendly flame retardant, characterized in that: The raw materials for its preparation include at least 80-120 parts of PVC powder, 1-3 parts of stabilizer, 30-50 parts of plasticizer, 20-50 parts of filler, 0-5 parts of lubricant, 1-10 parts of flame retardant and 5-15 parts of ultraviolet absorber colorant by weight.

2. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 1, characterized in that: The filler is selected from at least one of calcium powder, talcum powder, diatomaceous earth, titanium dioxide and wood powder.

3. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 2, characterized in that: The particle size of the calcium powder is 800-2000 meshes.

4. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 3, characterized in that: The plasticizer is selected from at least one of dioctyl phthalate, diisononyl phthalate, dioctyl terephthalate and epoxidized soybean oil.

5. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 4, characterized in that: The plasticizer is a combination of dioctyl phthalate and epoxidized soybean oil, and the mass ratio of the dioctyl phthalate to the epoxidized soybean oil is (30-50):(1-3).

6. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 5, characterized in that: The stabilizer includes a liquid barium zinc stabilizer and a powdered calcium zinc stabilizer.

7. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 6, characterized in that: The mass ratio of the liquid barium zinc stabilizer to the powdered calcium zinc stabilizer is (1-2): (0.1-1).

8. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 7, characterized in that: The flame retardant is selected from at least one of antimony trioxide, aluminum hydroxide, and an environmentally friendly composite flame retardant.

9. The automotive wiring harness film containing an environmentally friendly flame retardant according to claim 8, characterized in that: The environmentally friendly composite flame retardant is selected from at least one of Meiwang Chemical M+Iam s21, Qiyuan FR-30, Qiyuan NPE-101, and Guangdong Yuxing YT series.

10. A method for preparing an automotive wiring harness film containing an environmentally friendly flame retardant according to any one of claims 1 to 9, characterized in that: The method comprises at least the following steps: mixing PVC powder, stabilizer, plasticizer, filler, lubricant, flame retardant, ultraviolet absorber and colorant, and then sending them into an internal mixer for pre-plasticization, and then sending them to an extruder or a plasticizer for repeated plasticization and plasticization; after continuous calendering, they are deeply plasticized and calendered into a film, and then led out through a lead-off roller; after cooling and solidification, cutting and curling, the automotive wiring harness film is obtained.

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