阅读说明：本技术 单油酸甘油酯作为高分子材料的脱模剂和/或表面张力提高剂的用途 (Use of glycerol monooleate as release agent and/or surface tension enhancer for polymeric materials ) 是由 袁强 俞飞 吴国峰 赖昂 丁正亚 杨波 罗忠富 于 2020-12-14 设计创作，主要内容包括：本发明公开了一种单油酸甘油酯的新用途,具体为单油酸甘油酯作为高分子材料的脱模剂和/或表面张力提高剂的用途,所述单油酸甘油酯的纯度≥99.5％,所述高分子材料为车用聚丙烯材料；所述车用聚丙烯材料中,聚丙烯与单油酸甘油酯的重量比为,聚丙烯:单油酸甘油酯＝(60～100):(0.1～0.5)。按照本发明提供的方法在车用聚丙烯材料中加入单油酸甘油酯,可大幅降低材料的脱模力,同时还可大幅提高材料的表面张力,改善材料的喷涂性能,从而取代现有汽车零部件生产中的外喷脱模剂和火焰处理,提高汽车零部件的生产效率,以及降低生产成本,同时拓宽了单油酸甘油酯的应用范围。(The invention discloses a new application of glyceryl monooleate, in particular to an application of the glyceryl monooleate as a release agent and/or a surface tension improver of a high polymer material, wherein the purity of the glyceryl monooleate is more than or equal to 99.5 percent, and the high polymer material is a polypropylene material for vehicles; in the polypropylene material for the vehicle, the weight ratio of polypropylene to glyceryl monooleate is (60-100) to (0.1-0.5). According to the method provided by the invention, the glycerol monooleate is added into the polypropylene material for the automobile, so that the demolding force of the material can be greatly reduced, the surface tension of the material can be greatly improved, and the spraying performance of the material can be improved, thereby replacing the external spraying demolding agent and flame treatment in the existing automobile part production, improving the production efficiency of the automobile part, reducing the production cost, and widening the application range of the glycerol monooleate.)

1. Use of glycerol monooleate as a release agent and/or surface tension enhancer for polymeric materials.

2. Use according to claim 1, wherein the polymeric material is an automotive polypropylene material.

3. The use according to claim 2, wherein the polypropylene material for vehicles comprises polypropylene and glyceryl monooleate in a weight ratio of (60-100): (0.1-0.5).

4. Use according to any one of claims 1 to 3, wherein the glycerol monooleate has a purity of 99.5% or more.

5. A polypropylene material for vehicles, characterized in that it contains glycerol monooleate as a mold release agent and/or surface tension enhancer in the polypropylene material for vehicles.

6. The vehicular polypropylene material according to claim 5, wherein the vehicular polypropylene material comprises the following components in parts by weight: 60-100 parts of polypropylene and 0.1-0.5 part of glycerol monooleate.

7. The vehicular polypropylene material according to claim 6, further comprising the following components in parts by weight: 0-40 parts of filler, 0.2-0.5 part of antioxidant, 0.1-0.3 part of lubricant and 0.1-0.3 part of light stabilizer.

8. The vehicular polypropylene material according to any one of claims 5 to 7, wherein the glycerol monooleate has a purity of not less than 99.5%.

9. A method for preparing the polypropylene material for vehicles as claimed in any one of claims 5 to 8, comprising the steps of: mixing polypropylene, glyceryl monooleate, a filler, an antioxidant, a lubricant and a light stabilizer, extruding and granulating to obtain the automotive polypropylene material.

Technical Field

The invention belongs to the technical field of modification of high polymer materials, and particularly relates to application of glyceryl monooleate as a release agent and/or a surface tension enhancer of a high polymer material.

Background

With the development of social informatization and intellectualization, modularization, standardization and intellectualization of the automobile industry are undoubtedly an important development direction, and therefore optimization and improvement on the production process of automobile parts are needed to improve the production efficiency. Among the plastic varieties for automobiles, the development and application of polypropylene (PP) materials in automobiles are always the focus of attention in the automobile industry and the plastic industry. In the prior art, when the automobile parts are injection molded by using materials such as PP and the like, in order to ensure that the products are smoothly demoulded, a demoulding agent needs to be sprayed on an injection mould, and in addition, flame treatment needs to be carried out on the parts and parts materials so as to improve the surface tension of the materials and improve the spraying performance of the products. However, the above treatment process will certainly reduce the production efficiency of the automobile parts and increase the production cost.

Glyceryl Monooleate, the english name glycoryl Monooleate, is insoluble in water and has emulsifying, thickening and defoaming properties. In the daily chemical industry, the polymer is commonly used as an emulsifier, a thickener, an opacifier or an antifoaming agent for producing cream cosmetics and liquid washing shampoos, as a textile finishing agent in the textile industry, as a pigment grinding additive, and also as an internal antistatic agent for PE, PP and PVC, and the content of the polymer is generally 0.5 to 1.5 percent when the polymer is used as the antistatic agent.

Disclosure of Invention

The invention aims to provide a new application of glyceryl monooleate, in particular to a treatment mode that glyceryl monooleate is used as a release agent and/or a surface tension improver of a high polymer material, so that the release agent is sprayed on an injection mold and the surface tension of the material is improved by flame treatment in the prior art is replaced.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

use of glycerol monooleate as release agent and/or surface tension enhancer for polymeric materials

Preferably, the purity of the glycerol monooleate is more than or equal to 99.5 percent.

Preferably, the polymer material is a polypropylene material for vehicles.

Preferably, in the polypropylene material for vehicles, the weight ratio of polypropylene to glyceryl monooleate is (60-100): 0.1-0.5).

The inventor finds that the glycerol monooleate is added into the polypropylene material for the vehicle, so that the demolding force of the material can be greatly reduced, and the traditional external demolding agent spraying treatment mode can be replaced; in addition, the glycerol monooleate can also greatly improve the surface tension of the polypropylene material for the vehicle, improve the spraying performance of the material and replace the traditional flame treatment mode. Therefore, the invention can play a role in the two aspects, greatly improves the production efficiency of automobile parts and reduces the production cost.

In another aspect of the above technical solution, the present invention further provides a polypropylene material for vehicles, which contains glycerol monooleate as a release agent and/or a surface tension enhancer in the polypropylene material for vehicles. Preferably, the purity of the glycerol monooleate is more than or equal to 99.5 percent.

Preferably, the polypropylene material for vehicles comprises the following components in parts by weight: 60-100 parts of polypropylene and 0.1-0.5 part of glycerol monooleate.

Preferably, the polypropylene material for vehicles further comprises the following components in parts by weight: 0-40 parts of filler, 0.2-0.5 part of antioxidant, 0.1-0.3 part of lubricant and 0.1-0.3 part of light stabilizer.

Preferably, the filler is talc or calcium carbonate.

Preferably, the antioxidant is a mixture of pentaerythrityl tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] (i.e., antioxidant 1010) and tris [2, 4-di-tert-butylphenyl ] phosphite (i.e., antioxidant 168).

Preferably, the lubricant is Ethylene Bis Stearamide (EBS).

Preferably, the light stabilizer is a hindered amine light stabilizer.

As another aspect of the above technical solution, the present invention further provides a preparation method of the polypropylene material for vehicles, which includes the following steps: mixing polypropylene, glyceryl monooleate, a filler, an antioxidant, a lubricant and a light stabilizer, extruding and granulating to obtain the automotive polypropylene material.

Compared with the prior art, the invention has the beneficial effects that: the invention provides a new application of glyceryl monooleate, in particular to an application of glyceryl monooleate as a release agent and a surface tension enhancer of an automotive polypropylene material. According to the method provided by the invention, the glycerol monooleate is added into the polypropylene material for the automobile, so that the demolding force of the material can be greatly reduced, the surface tension of the material can be greatly improved, and the spraying performance of the material can be improved, thereby replacing the external spraying demolding agent and flame treatment in the existing automobile part production, improving the production efficiency of the automobile part, reducing the production cost, and widening the application range of the glycerol monooleate.

Detailed Description

The technical solutions of the present invention will be further described with reference to the following embodiments, and it should be apparent that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The raw materials in the examples and comparative examples were obtained commercially from the following sources:

the purity of the glycerol monooleate is analytically pure, and the model is as follows: GMO, available from jonan dongrun technologies ltd;

polypropylene, type number: PP N-Z30S, available from Zhongjingshi;

talc powder, type: AH51210, purchased from the ehai sea of liaison;

calcium carbonate, type: AC-MLT03, available from Melitanization of Aquilaria sinensis;

antioxidant A, type: 1010, ex turbo-Baker, Switzerland;

antioxidant B, type: 168, ex autobus purification, switzerland;

lubricant, type number: EBS, available from Indonesian chemical Co., Ltd;

light stabilizer, type: UV-3808PP5, available from Cyanite USA.

Performance test criteria or methods:

the method for testing the demolding force comprises the following steps: the polypropylene material particles are dried for 2h at 80 ℃ for standby, then 10kg of plastic particles are poured into an injection molding machine for injection molding, the injection molding temperature is 200 ℃, the demolding force is evaluated by adopting a system for measuring the demolding force of polymer injection molding disclosed in CN202020371834.4, and the smaller the demolding force is, the better the demolding performance of the material is.

The sprayability was characterized using surface tension, the greater the surface tension, the better the sprayability, the surface tension was measured according to Ford BO 116-03 standard, in mN/m, and the surface tension solution formulation comparison table is shown in Table-1:

TABLE-1 comparative table for surface tension solution preparation

Serial number	water/mL	ethanol/mL	Surface tension/(mN/m)
				1	0	50	22.3
2	1.25	48.75	22.8
				3	5.25	44.75	24.2
4	9.5	40.5	26.1
				5	13.25	36.75	27.5
6	17.5	32.5	29.5
				7	21.25	28.75	31.5
8	24.25	25.75	33
				9	27	23	34.7
10	29.5	20.5	36.9
				11	31.75	18.25	39.3
12	33.75	16.25	42.5
				13	35.75	14.25	48
14	37.35	12.65	48.8
				15	39	11	51.7
16	40.15	9.85	53.7
				17	41.5	8.5	56
18	43.5	6.5	59.5
				19	45.35	4.65	62.7
20	46.85	3.15	65.7
				21	48.25	1.75	68.7
22	49.5	0.5	71
				23	50	0	72

Example 1

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight portion, 100 portions of polypropylene PP N-Z30S, 0.1 portion of antioxidant 1010, 0.1 portion of antioxidant 168, 0.1 portion of lubricant EBS, 0.1 portion of light stabilizer UV-3808PP5 and 0.5 portion of glycerol monooleate are added into a high-speed mixer to be uniformly mixed. Wherein the temperature of the high-speed mixer is 45 ℃ and the rotating speed of the high-speed mixer is 300 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 450 rpm, and the screw length-diameter ratio was 48.

Example 2

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight portion, 90 portions of polypropylene PP N-Z30S, 10 portions of talcum powder AH51210, 0.2 portion of antioxidant 1010, 0.1 portion of antioxidant 168, 0.14 portion of lubricant EBS, 0.15 portion of light stabilizer UV-3808PP5 and 0.1 portion of glycerol monooleate are added into a high-speed mixer to be uniformly mixed. Wherein the temperature of the high-speed mixer is 65 ℃ and the rotating speed of the high-speed mixer is 120 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 550 rpm, and the screw length-diameter ratio was 48.

Example 3

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight portion, 80 portions of polypropylene PP N-Z30S, 20 portions of calcium carbonate AC-MLT03, 0.2 portion of antioxidant 1010, 0.2 portion of antioxidant 168, 0.14 portion of lubricant EBS, 0.15 portion of light stabilizer UV-3808PP5 and 0.2 portion of glycerol monooleate are added into a high-speed mixer to be mixed evenly. Wherein the temperature of the high-speed mixer is 60 ℃ and the rotating speed of the high-speed mixer is 150 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 500 rpm, and the screw length-diameter ratio was 52.

Example 4

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight portion, 70 portions of polypropylene PP N-Z30S, 30 portions of calcium carbonate AC-MLT03, 0.25 portion of antioxidant 1010, 0.2 portion of antioxidant 168, 0.16 portion of lubricant EBS, 0.18 portion of light stabilizer UV-3808PP5 and 0.25 portion of glycerol monooleate are added into a high-speed mixer to be uniformly mixed. Wherein the temperature of the high-speed mixer is 60 ℃ and the rotating speed of the high-speed mixer is 150 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 500 rpm, and the screw length-diameter ratio was 44.

Example 5

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight portion, 60 portions of polypropylene PP N-Z30S, 40 portions of calcium carbonate AC-MLT03, 0.25 portion of antioxidant 1010, 0.25 portion of antioxidant 168, 0.3 portion of lubricant EBS, 0.3 portion of light stabilizer UV-3808PP5 and 0.45 portion of glycerol monooleate are added into a high-speed mixer to be uniformly mixed. Wherein the temperature of the high-speed mixer is 60 ℃ and the rotating speed of the high-speed mixer is 210 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 500 rpm, and the screw length-diameter ratio was 44.

Example 6

A preparation method of a polypropylene material for vehicles comprises the following steps: according to the weight parts, 74 parts of polypropylene PP N-Z30S, 26 parts of talcum powder AH51210, 0.22 part of antioxidant 1010, 0.25 part of antioxidant 168, 0.24 part of lubricant EBS, 0.3 part of light stabilizer UV-3808PP5 and 0.5 part of glycerol monooleate are added into a high-speed mixer and uniformly mixed. Wherein the temperature of the high-speed mixer is 60 ℃ and the rotating speed of the high-speed mixer is 210 r/min. And then, adding the mixed materials into a double-screw extruder for extruding, cooling, granulating and packaging. The temperature of the extruder from the feeding section to the head was 190 ℃, 215 ℃, 210 ℃, 205 ℃, the screw rotation speed was 500 rpm, and the screw length-diameter ratio was 44.

Comparative example 1: the only difference from example 1 is that glycerol monooleate was not added, and the other examples were the same as example 1.

Comparative example 2: the difference from example 1 is only that the glyceryl monooleate in example 1 is replaced by the stearyl erucamide, and the amount is unchanged.

Comparative example 3: the only difference from example 1 is that the glycerol monooleate in example 1 was replaced by erucamide in the same amount.

The polypropylene materials for vehicles of examples 1 to 6 and comparative examples 1 to 3 were subjected to the performance test in the manner described above, and the test results are shown in Table-2.

TABLE-2 Properties of examples 1 to 6 and comparative examples 1 to 3

And (4) analyzing results: as can be seen from the above examples 1-6 and comparative example 1, after the glycerol monooleate is added, the demolding force of the polypropylene material for vehicles is obviously reduced, the reduction range is 40%, and simultaneously the surface tension is obviously improved, and is improved from 26.1 to 33. As can be seen from comparative example 2, when the release agent, stearyl erucamide, conventionally used in the art, is added, although the release force of the polypropylene material can be reduced to some extent, the effect is far inferior to that of the examples, and the surface tension of the material cannot be increased by the stearyl erucamide. As can be seen from comparative example 3, when erucamide, which is a surface tension enhancer conventionally used in the art, is added, although the mold release force of the polypropylene material can be reduced to some extent, the effect is far inferior to that of the examples, and erucamide cannot increase the surface tension of the material.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.