阅读说明：本技术 一种用于橡塑材料的纤维填料及其制备方法 (Fiber filler for rubber and plastic material and preparation method thereof ) 是由 郑小鹏 王秀光 于 2019-09-06 设计创作，主要内容包括：本发明公开了一种用于橡塑材料的纤维填料及其制备方法,所述用于橡塑材料的纤维填料由工业污泥回收制得；所述用于橡塑材料的纤维填料的细度为0.05μm～0.35μm；纤维填料中还包括质量分数为6.5％～10.5％的陶土和微硅粉,其中,陶土和微硅粉的质量比为1：1.0～1.5。本发明制备的用于橡塑材料的纤维填料,利用回收的工业污泥和陶土、微硅粉组合,制成的纤维填料充填在橡胶和塑料制品中,相容性好,填充稳定性高,对橡塑材料的性能改善明显。(the invention discloses a fiber filler for rubber and plastic materials and a preparation method thereof, wherein the fiber filler for the rubber and plastic materials is prepared by recycling industrial sludge; the fineness of the fiber filler for the rubber and plastic material is 0.05-0.35 mu m; the fiber filler also comprises argil and micro silicon powder with the mass fraction of 6.5-10.5%, wherein the mass ratio of the argil to the micro silicon powder is 1: 1.0 to 1.5. The fiber filler for rubber and plastic materials prepared by the invention is filled in rubber and plastic products by utilizing the combination of the recycled industrial sludge, the argil and the micro silicon powder, has good compatibility and high filling stability, and obviously improves the performance of the rubber and plastic materials.)

1. the fiber filler for the rubber and plastic material is characterized by being prepared by recycling industrial sludge; the fineness of the fiber filler for the rubber and plastic material is 0.05-0.35 mu m.

2. The fiber filler for rubber and plastic materials as claimed in claim 1, wherein the fiber filler further comprises pottery clay and silica fume with a mass fraction of 6.5-10.5%, wherein the mass ratio of pottery clay to silica fume is 1: 1.0 to 1.5.

3. the fibrous filler for rubber-plastic materials according to claim 1, wherein the industrial sludge is dewatered and dried to a water content of 10% to 16%.

4. A method for preparing a fibrous filler for rubber-plastic materials according to any one of claims 1 to 3, characterized in that it comprises the following steps:

S1, heating the industrial sludge to 860-960 ℃, calcining for 2-3 hours, cooling to 50-60 ℃ along with the furnace, and crushing to 30-60 meshes to obtain powder;

adding pottery clay and micro silicon powder into the powder in S2 and S1, mixing and grinding for 3-6 hours, then heating and melting, preparing superfine fiber by using high-speed centrifugal equipment, adding rosin resin into the superfine fiber, and kneading for 25-30 minutes in a kneader with the temperature of 100-105 ℃ to obtain a fiber filler primary product;

And (3) drying the fiber filler primary product in S3 and S2 at the temperature of 105-115 ℃ for 2-3 hours, then adding a titanate coupling agent solution, magnetically stirring for 30-60 minutes, filtering, drying again, and grinding to obtain the fiber filler for the rubber and plastic material.

5. The method according to claim 4, wherein in S1, the temperature is raised to 500-650 ℃ at a rate of 5-8 ℃/min, and then raised to 860-960 ℃ at a rate of 1.5-2.0 ℃/min.

6. the method according to claim 4, wherein the mixed milling rate in S2 is 1600 rpm to 3200 rpm.

7. The preparation method according to claim 4, wherein in S2, the mass ratio of the superfine fiber to the rosin resin is 1: 0.06-0.09.

8. The method according to claim 4, wherein in S3, the titanate coupling agent is a coordination type titanate coupling agent or a chelate type titanate coupling agent.

9. The method according to claim 4, wherein in S3, the mass ratio of the primary fiber filler to the titanate coupling agent is 1: 0.08 to 0.22.

10. the preparation method according to claim 4, wherein in S3, the re-drying is specifically drying at 85-95 ℃ for 2-2.5 hours.

Technical Field

the invention relates to the field of rubber and plastic fillers, in particular to a fiber filler for rubber and plastic materials and a preparation method thereof.

Background

Due to the particularity of polymer materials such as rubber, plastic and the like, a certain amount of filler is required to be filled in the process of processing products to enhance the physical properties and the processability of the products, for example, the gloss, the chromaticity, the strength, the thermal stability, the ultraviolet resistance and the like of the products are improved, the water and oil absorption capacity and the oxidation and aging resistance of the products are also improved, and the production cost of the products is also effectively reduced.

with the development of industrialization, the production amount of fillers of polymer materials at home and abroad is greatly increased at present, the fillers for rubber and plastic materials mainly come from natural ores, rocks and the like, and the application of artificial materials is less.

industrial sludge is sludge produced by industrial wastewater treatment, and is mostly inorganic sludge. The sludge treatment process generally comprises dehydration, selection of disposal mode, recycling, isolation and landfill and harmless incineration. In the sludge treatment process, chemical treatment links and secondary pollution are reduced, and harmful sludge is subjected to harmless treatment and then is recycled.

Chinese patent CN101348578B discloses a method for preparing modified fly ash micro-bead rubber plastic filler, which uses waste fly ash as raw material, and can replace light calcium carbonate to fill in rubber and plastic products by corroding, chemically modifying and treating the surface of the waste fly ash. The technical key points are as follows: forming new surfaces and active points after the surface of the fly ash is corroded by hydrofluoric acid serving as a corrosive agent; and then activating by an activating agent, performing nano modification, performing coupling agent grafting hydrophobic treatment and the like to obtain the fly ash micro-bead rubber plastic filler. All indexes of the calcium carbonate are superior to those of light calcium carbonate: good reinforcing performance, aging resistance, corrosion resistance and good compatibility with a polymer matrix.

chinese patent CN106633191B discloses a method for producing flame-retardant ceramic rubber and plastic filler by using red mud, which comprises the steps of mixing red mud and sodium hydroxide, placing the mixture in a crucible for heating, cooling to room temperature, taking out the crucible, placing the crucible in boiling water, stirring, standing for layering, drying upper-layer suspended matters, adding silicon dioxide, aluminum oxide, magnesium oxide, calcium carbonate, barium carbonate, ammonium dihydrogen phosphate, bismuth oxide, borax and lithium carbonate, heating for melting, cooling, and grinding into fine powder.

Chinese patent CN107857900A discloses a method for preparing rubber and plastic filler by using coal gasification fine slag, the prepared rubber, the filler and the application thereof, wherein the method comprises the following steps: taking a proper amount of coal gasification fine slag, and adding water to prepare coal gasification fine slag slurry with the solid content of 10-30 wt%; fully stirring the prepared slurry, then performing gravity cyclone separation, collecting a heavy separation product to obtain silicon-rich composite slurry, and performing solid-liquid separation and drying treatment on the silicon-rich composite slurry, wherein screening treatment is further performed before the solid-liquid separation or after the drying treatment; also disclosed is a rubber product or a plastic product produced by using the filler.

Therefore, aiming at the problems, the invention provides the fiber filler for the rubber and plastic material, which solves the problems of idle and waste of industrial sludge resources and environment caused by landfill and incineration, and simultaneously the obtained fiber filler can enhance the mechanical strength, oxidation resistance, impact resistance, wear resistance and other mechanical properties of the rubber and plastic material, thereby realizing the maximization of resource utilization.

Disclosure of Invention

The invention aims at the problems and provides a fiber filler for rubber and plastic materials and a preparation method thereof.

The technical scheme adopted by the invention for solving the problems is as follows: the fiber filler for the rubber and plastic material is prepared by recycling industrial sludge; the fineness of the fiber filler for the rubber and plastic material is 0.05-0.35 mu m.

Further, the fiber filler also comprises argil and silica fume with the mass fraction of 6.5-10.5%, wherein the mass ratio of the argil to the silica fume is 1: 1.0 to 1.5. The pottery clay and the silica fume are added into the fiber filler, so that the hardness and the brittleness of the fiber filler are improved, the toughness, the oxidation resistance and the impact resistance of the fiber filler are improved, the compatibility of the fiber filler and a rubber-plastic material is improved, and the stability is high.

Further, the industrial sludge is dehydrated and dried, and the water content is 10-16%. The dehydrated industrial sludge is convenient to process and the cost is reduced.

another object of the present invention is to provide a method for preparing the fiber filler for rubber and plastic materials, which comprises the following steps:

S1, heating the industrial sludge to 860-960 ℃, calcining for 2-3 hours, cooling to 50-60 ℃ along with the furnace, and crushing to 30-60 meshes to obtain powder;

adding pottery clay and micro silicon powder into the powder in S2 and S1, mixing and grinding for 3-6 hours, then heating and melting, preparing superfine fiber by using high-speed centrifugal equipment, adding rosin resin into the superfine fiber, and kneading for 25-30 minutes in a kneader with the temperature of 100-105 ℃ to obtain a fiber filler primary product;

And (3) drying the fiber filler primary product in S3 and S2 at the temperature of 105-115 ℃ for 2-3 hours, then adding a titanate coupling agent solution, magnetically stirring for 30-60 minutes, filtering, drying again, and grinding to obtain the fiber filler for the rubber and plastic material.

further, in S1, in the heating process, the temperature is first raised to 500-650 ℃ at a rate of 5-8 ℃/min, and then raised to 860-960 ℃ at a rate of 1.5-2.0 ℃/min.

Further, in S2, the mixing/polishing rate is 1600 rpm to 3200 rpm.

Further, in S2, the mass ratio of the ultrafine fibers to the rosin resin is 1: 0.06-0.09.

Further, in S3, the titanate coupling agent is a coordination type titanate coupling agent or a chelate type titanate coupling agent.

Furthermore, in S3, the mass ratio of the primary fiber filler to the titanate coupling agent is 1: 0.08 to 0.22.

further, in the step S3, the second drying is specifically drying for 2 to 2.5 hours at a temperature of 85 to 95 ℃.

The invention has the advantages that:

1. the fiber filler for the rubber and plastic material prepared by the invention is filled in rubber and plastic products by utilizing the combination of the recycled industrial sludge, the argil and the micro silicon powder, has good compatibility and high filling stability, and obviously improves the performance of the rubber and plastic material;

2. The fiber filler for the rubber and plastic material, prepared by the invention, reuses the recycled industrial sludge, realizes the recycling value of the industrial sludge, reduces the pollution and pressure of the industrial sludge waste to the environment, and avoids the waste of industrial sludge resources;

3. The fiber filler for the rubber and plastic material, which is prepared by the invention, has the advantages of simple and feasible preparation method, strong operability, less cost investment in the process, simple and controllable equipment and higher economic value;

4. the fiber filler for the rubber and plastic material, prepared by the invention, can well improve the mechanical properties of the rubber and plastic material product, such as strength, hardness, aging resistance, impact resistance and the like, can improve the high-temperature and high-temperature stability of the rubber and plastic material product, and can prolong the service life.

Detailed Description

The following detailed description of embodiments of the invention, but the invention can be practiced in many different ways, as defined and covered by the claims.