阅读说明：本技术 用于5g通信的陶瓷介质滤波器注射成型喂料及其制备方法 (Injection molding feed for ceramic dielectric filter for 5G communication and preparation method thereof ) 是由 侯东霞 苏聪 宋喆 虞成城 于 2020-04-28 设计创作，主要内容包括：本发明公开了一种用于5G通信的陶瓷介质滤波器注射成型喂料及其制备方法,喂料包括如下重量份的原料：微波陶瓷粉70～90份和添加剂10～30份；所述添加剂包括如下重量份的原料：POM 60～80份、ABS/PC 5～20份、POM分解抑制剂1～5份、分散剂3～15份、脱模剂1～5份和增韧剂2～10份。制备得到的注射成型喂料的POM的脱脂率高,且注射成型后的产品的尺寸稳定性好,合格率高。(The invention discloses a ceramic dielectric filter injection molding feed for 5G communication and a preparation method thereof, wherein the feed comprises the following raw materials in parts by weight: 70-90 parts of microwave ceramic powder and 10-30 parts of additive; the additive comprises the following raw materials in parts by weight: 60-80 parts of POM, 5-20 parts of ABS/PC, 1-5 parts of POM decomposition inhibitor, 3-15 parts of dispersant, 1-5 parts of release agent and 2-10 parts of toughening agent. The prepared POM of the injection molding feed has high degreasing rate, and the injection molded product has good dimensional stability and high qualification rate.)

1. The injection molding feed for the ceramic dielectric filter for 5G communication is characterized by comprising the following raw materials in parts by weight: 70-90 parts of microwave ceramic powder and 10-30 parts of additive; the additive comprises the following raw materials in parts by weight: 60-80 parts of POM, 5-20 parts of ABS/PC, 1-5 parts of POM decomposition inhibitor, 3-15 parts of dispersant, 1-5 parts of release agent and 2-10 parts of toughening agent.

2. The ceramic dielectric filter injection molding feed for 5G communication according to claim 1, wherein the dispersant is at least one of sorbitan monostearate, silicone oil, PM and DPM.

3. The ceramic dielectric filter injection molding feed for 5G communications according to claim 1, wherein the release agent is at least one of erucamide, oxidized polyethylene wax, and EBS wax.

4. The ceramic dielectric filter injection molding feed for 5G communication according to claim 1, wherein the toughening agent is acrylate elastomer MA-28.

5. The injection molding feed for the 5G communication ceramic dielectric filter as claimed in claim 1, wherein the microwave ceramic powder has a specific surface area of 7-10 m²The particle size D50 is 0.8-2 μm, and the loss on ignition is less than or equal to 0.9 wt%.

6. A preparation method of injection molding feed for a ceramic dielectric filter for 5G communication is characterized in that raw materials are weighed according to the proportion of any one of claims 1 to 5, microwave ceramic powder is preheated to 160-210 ℃ in an internal mixer, POM, ABS/PC and POM decomposition inhibitor are sequentially added into the internal mixer for mixing, dispersant, release agent and toughening agent are added after mixing, and a mixture is obtained after mixing for 0.5-3 h; crushing the mixture to obtain a granular material; and granulating the granules to obtain the injection molding feed of the ceramic dielectric filter.

7. The method of preparing an injection-molded feed for a ceramic dielectric filter for 5G communication as set forth in claim 6, wherein the diameter of the pellet is less than 6 mm.

8. The preparation method of the injection molding feed for the ceramic dielectric filter for 5G communication as claimed in claim 6, wherein the granulation is carried out in a granulator at a temperature of 150-190 ℃ and a screw rotation speed of 120-220 r/min.

9. The method for preparing the injection molding feed of the ceramic dielectric filter for 5G communication as claimed in claim 6, wherein the rotation speed of the internal mixer is 3-10 r/min when the microwave ceramic powder is preheated, and the rotation speed of the internal mixer is 20-40 r/min after the dispersant, the release agent and the toughening agent are added.

10. The method for preparing an injection molding feed for a ceramic dielectric filter for 5G communication as set forth in claim 6, wherein the mixture is cooled before being crushed.

Technical Field

The invention relates to the technical field of communication, in particular to a ceramic dielectric filter injection molding feed for 5G communication and a preparation method thereof.

Background

With the advent of the 5G era, ceramic dielectric filters have been the subject of research, but due to their larger volume and more complex structure than typical ceramic injection parts, degreasing of the product is more difficult and dimensional consistency is poorer.

At present, the key for solving the problems is the design of an injection molding feeding formula, for example, the prior binder systems are difficult to subsequently degrease and discharge glue, so that the qualification rate of products is reduced; still other binders can result in poor performance of the injection molded ceramic product. Therefore, it is important to design a feeding formula suitable for injection molding of the ceramic dielectric filter for 5G communication by selecting a proper binder system.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the injection molding feed for the ceramic dielectric filter for 5G communication and the preparation method thereof are provided, the material is easy to mold, and the POM degreasing rate of the feed is high.

In order to solve the technical problems, the invention adopts the technical scheme that:

a ceramic dielectric filter injection molding feed for 5G communication comprises the following raw materials in parts by weight: 70-90 parts of microwave ceramic powder and 10-30 parts of additive; the additive comprises the following raw materials in parts by weight: 60-80 parts of POM, 5-20 parts of ABS/PC, 1-5 parts of POM decomposition inhibitor, 3-15 parts of dispersant, 1-5 parts of release agent and 2-10 parts of toughening agent.

The invention adopts another technical scheme that:

a preparation method of injection molding feed for a ceramic dielectric filter for 5G communication comprises the steps of weighing raw materials according to the proportion, preheating microwave ceramic powder to 160-210 ℃ in an internal mixer, then sequentially adding POM, ABS/PC and POM decomposition inhibitor into the internal mixer for mixing, adding a dispersing agent, a release agent and a toughening agent after mixing, and obtaining a mixture after mixing for 0.5-3 hours; crushing the mixture to obtain a granular material; and granulating the granules to obtain the injection molding feed of the ceramic dielectric filter.

The invention has the beneficial effects that: POM is added into the additive to be used as a main binder, and ABS/PC is added, so that the injection molding feed is easy to mold; the degreasing rate of the POM of the injection molding feed is as high as 95 percent, the qualification rate is as high as 98 percent, and the product has good dimensional stability and good consistency; the POM decomposition inhibitor is added to solve the problem of POM pyrolysis and reduce the generation of formaldehyde molecules. The preparation process of the injection molding feed is simple, and the processing cost is low. The invention can not only reduce the manufacturing cost of the ceramic dielectric filter, but also improve the production efficiency.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description will be given with reference to the embodiments.

The most key concept of the invention is as follows: POM is added into the additive to be used as a main binder, and ABS/PC is added, so that the injection molding feed is easy to mold.

A ceramic dielectric filter injection molding feed for 5G communication comprises the following raw materials in parts by weight: 70-90 parts of microwave ceramic powder and 10-30 parts of additive; the additive comprises the following raw materials in parts by weight: 60-80 parts of POM, 5-20 parts of ABS/PC, 1-5 parts of POM decomposition inhibitor, 3-15 parts of dispersant, 1-5 parts of release agent and 2-10 parts of toughening agent.

From the above description, the beneficial effects of the present invention are: POM is added into the additive to be used as a main binder, and ABS/PC is added, so that the injection molding feed is easy to mold; the degreasing rate of the POM of the injection molding feed is as high as 95 percent, the qualification rate is as high as 98 percent, and the product has good dimensional stability and good consistency; the POM decomposition inhibitor is added to solve the problem of POM pyrolysis and reduce the generation of formaldehyde molecules.

Further, the dispersant is at least one of sorbitan monostearate, silicone oil, PM and DPM.

As is apparent from the above description, the kind of the dispersant may be selected as desired, and may be one or more.

Further, the release agent is at least one of erucamide, oxidized polyethylene wax and EBS wax.

As is apparent from the above description, the kind of the release agent may be selected as desired, and may be one or more.

Further, the toughening agent is an acrylate elastomer MA-28.

Further, the specific surface area of the microwave ceramic powder is 7-10 m²The particle size D50 is 0.8-2 μm, and the loss on ignition is less than or equal to 0.9 wt%.

The invention relates to another technical scheme which is as follows:

a preparation method for injection molding feed of a ceramic dielectric filter for 5G communication comprises the steps of weighing raw materials according to the proportion of any one of claims 1 to 5, preheating microwave ceramic powder to 160-210 ℃ in an internal mixer, then sequentially adding POM, ABS/PC and POM decomposition inhibitor into the internal mixer for mixing, adding a dispersing agent, a release agent and a toughening agent after mixing, and mixing for 0.5-3 h to obtain a mixture; crushing the mixture to obtain a granular material; and granulating the granules to obtain the injection molding feed of the ceramic dielectric filter.

As can be seen from the above description, the injection molding feedstock has a simple preparation process and low processing cost.

Further, the diameter of the granules is less than 6 mm.

Further, granulating in a granulator, wherein the granulating temperature is 150-190 ℃, and the screw rotating speed is 120-220 r/min.

Further, the rotating speed of an internal mixer is 3-10 r/min when the microwave ceramic powder is preheated, and the rotating speed of the internal mixer is 20-40 r/min after the dispersing agent, the release agent and the toughening agent are added.

Furthermore, the mixed material is cooled before being crushed.

As can be seen from the above description, the cooling treatment can be naturally cooled to room temperature.