Halogen-free flame-retardant automotive interior trim part material and preparation method thereof

Abstract

The invention discloses a halogen-free flame-retardant automotive upholstery material and a preparation method thereof. The halogen-free flame-retardant automotive upholstery material comprises the following raw materials in parts by weight: 40-60 parts of ABS resin, 10-30 parts of polypropylene, 15-30 parts of a halogen-free composite flame retardant, 5-10 parts of organic silicon and 5-25 parts of a processing aid. The ABS resin and the polypropylene are mixed and melted, the wettability can be improved by adding the organic silicon, the soft touch feeling of the interior trim part is improved, the anti-aging performance is improved, the flame retardant effect of the interior trim part can be improved by the halogen-free flame retardant, emission of harmful substances is reduced, and the environmental protection performance is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile interior decoration material, and in particular relates to a halogen-free flame-retardant automobile interior decoration material and a preparation method thereof. Background Art

[0002] At present, most of the soft parts of automotive interior parts are made of PVC and PU materials, with a hardness requirement of 70-85A. Materials with polypropylene or polyethylene as the main resin cannot meet the low hardness requirements. PVC materials contain halogens and will be gradually replaced under the increasingly stringent halogen-free environmental protection requirements of the automotive industry. PU materials have poor high and low temperature resistance and are prone to aging and cracking. In order to improve the environmental protection and touch texture requirements of interior parts, a halogen-free flame-retardant automotive interior material and a preparation method thereof are provided. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a halogen-free flame-retardant automotive interior material and a preparation method thereof, which solves the problems of low hardness touch and poor environmental protection of interior parts in the prior art.

[0004] In order to solve the above technical problems, the present invention discloses a halogen-free flame-retardant automotive interior material, characterized in that it comprises the following raw materials in parts by weight: 40 to 60 parts of ABS resin, 10 to 30 parts of polypropylene, 15 to 30 parts of halogen-free composite flame retardant, 5 to 10 parts of silicone and 5 to 25 parts of processing aid.

[0005] Furthermore, the halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:3.

[0006] Furthermore, the processing aids mentioned above are antioxidants, heat stabilizers, lubricants and compatibilizers, which are mixed in a weight ratio of (0.5-2): (0.1-1.5): (1-3): (2-4).

[0007] Furthermore, the above antioxidant is pentaerythritol ester.

[0008] Furthermore, the above-mentioned heat stabilizer is calcium stearate.

[0009] Furthermore, the lubricant is silicone oil.

[0010] Furthermore, the above compatibilizer is maleic anhydride.

[0011] The method for preparing the flame-retardant automotive interior material according to claim 1 is characterized by comprising the following steps: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) Extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material.

[0012] The mixing temperature of the internal mixer is 110°C to 160°C. The setting temperature of the twin-screw extruder is 150°C to 200°C, and the main engine speed is 250r / min.

[0013] Compared with the prior art, the present application can obtain the following technical effects: The present invention mixes and melts ABS resin and polypropylene, and adds silicone to improve wettability, increase the soft touch of interior decoration parts, and improve anti-aging performance. The halogen-free flame retardant can improve the flame retardant effect of interior decoration parts, reduce the emission of harmful substances, and improve environmental protection.

[0014] Of course, any product implementing this application does not necessarily need to achieve all of the technical effects described above at the same time. DETAILED DESCRIPTION

[0015] The following will explain the implementation methods of the present application in detail with reference to examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly. Example 1

[0016] A halogen-free flame-retardant automotive interior material, characterized in that it comprises the following raw materials in parts by weight: 40 parts of ABS resin, 25 parts of polypropylene, 15 parts of halogen-free composite flame retardant, 6 parts of silicone and 14 parts of processing aid. The halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:3. The processing aid is an antioxidant, a heat stabilizer, a lubricant and a compatibilizer, which are mixed in a weight ratio of 0.5:0.8:1:3.

[0017] The method for preparing a flame retardant automotive interior material comprises the following steps: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) Extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material.

[0018] The mixing temperature of the internal mixer is 150°C. The setting temperature of the twin-screw extruder is 170°C and the main engine speed is 250r / min. Example 2

[0019] A halogen-free flame-retardant automotive interior material, characterized in that it comprises the following raw materials in parts by weight: 50 parts of ABS resin, 10 parts of polypropylene, 15 parts of halogen-free composite flame retardant, 10 parts of silicone and 15 parts of processing aid. The halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:3. The processing aid is an antioxidant, a heat stabilizer, a lubricant and a compatibilizer, which are mixed in a weight ratio of 0.5:0.8:1:3.

[0020] The method for preparing a flame retardant automotive interior material comprises the following steps: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) Extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material.

[0021] The mixing temperature of the internal mixer is 150°C. The setting temperature of the twin-screw extruder is 170°C and the main engine speed is 250r / min.

[0022] Comparative Example 1 A halogen-free flame-retardant automotive interior material, characterized in that it comprises the following raw materials in parts by weight: 40 parts of ABS resin, 30 parts of polypropylene, 20 parts of halogen-free composite flame retardant and 10 parts of processing aid. The halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:3. The processing aid is an antioxidant, a heat stabilizer, a lubricant and a compatibilizer, which are mixed in a weight ratio of 0.5:0.8:1:3.

[0023] The method for preparing a flame retardant automotive interior material comprises the following steps: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) Extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material.

[0024] The mixing temperature of the internal mixer is 150°C. The setting temperature of the twin-screw extruder is 170°C and the main engine speed is 250r / min.

[0025] Comparative Example 2 A halogen-free flame-retardant automotive interior material, characterized in that it comprises the following raw materials in parts by weight: 50 parts of ABS resin, 30 parts of polypropylene, 25 parts of halogen-free composite flame retardant and 5 parts of processing aid. The halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:3. The processing aid is an antioxidant, a heat stabilizer, a lubricant and a compatibilizer, which are mixed in a weight ratio of 0.5:0.8:1:3.

[0026] The method for preparing a flame retardant automotive interior material comprises the following steps: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) Extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material.

[0027] The mixing temperature of the internal mixer is 150°C. The setting temperature of the twin-screw extruder is 170°C and the main engine speed is 250r / min.

[0028]

[0029] The data of the embodiments and comparative examples listed in the above table show that adding silicone to the raw materials can improve the anti-aging performance of the interior decoration, the combination of ABS resin and polypropylene optimizes the environmental friendliness of the material and reduces the release of harmful substances, and the added halogen-free composite flame retardant can reduce the smoke emission while providing high-quality interior decoration parts for new energy vehicles.

[0030] The present invention mixes and melts ABS resin and polypropylene, and adds silicone to improve wettability, increase the soft touch of interior decoration parts, and improve anti-aging performance. The halogen-free flame retardant can improve the flame retardant effect of interior decoration parts, reduce the emission of harmful substances, and improve environmental protection.

[0031] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A halogen-free flame-retardant automotive interior material, characterized in that: The invention comprises the following raw materials in parts by weight: 40 to 60 parts of ABS resin, 10 to 30 parts of polypropylene, 15 to 30 parts of halogen-free composite flame retardant, 5 to 10 parts of organic silicon and 5 to 25 parts of processing aid.

2. The halogen-free flame-retardant automotive interior material according to claim 1, characterized in that: The halogen-free composite flame retardant is a mixture of magnesium hydroxide and zinc borate in a weight ratio of 4:

3.

3. The halogen-free flame-retardant automotive interior material according to claim 1, characterized in that: The processing aids are antioxidants, heat stabilizers, lubricants and compatibilizers, which are mixed in a weight ratio of (0.5-2): (0.1-1.5): (1-3): (2-4).

4. The halogen-free flame-retardant automotive interior material according to claim 3, characterized in that: The antioxidant is pentaerythritol ester.

5. The halogen-free flame-retardant automotive interior material according to claim 3, characterized in that: The heat stabilizer is calcium stearate.

6. The halogen-free flame-retardant automotive interior material according to claim 3, characterized in that: The lubricant is silicone oil.

7. The halogen-free flame-retardant automotive interior material according to claim 3, characterized in that: The compatibilizer is maleic anhydride.

8. The method for preparing the halogen-free flame-retardant automotive interior material according to claim 1, characterized in that: The following steps are involved: a) Weigh each raw material according to the formula components; b) mixing all raw materials uniformly to obtain a mixture; c) adding the mixture into an internal mixer for internal mixing; d) feeding the mixed material after internal mixing into a twin-screw extruder through a double-cone feeding method; e) extruding and granulating with a twin-screw extruder to obtain a halogen-free flame-retardant soft material; The mixing temperature of the internal mixer is 110°C to 160°C. The setting temperature of the twin-screw extruder is 150°C to 200°C, and the main engine speed is 250r / min.

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