阅读说明：本技术 一种岩棉混合树脂基矿物复合材料及其制备方法 (Rock wool mixed resin-based mineral composite material and preparation method thereof ) 是由 郑国栋 于 2021-08-12 设计创作，主要内容包括：本发明涉及一种岩棉混合树脂基矿物复合材料及其制备方法,复合材料包括骨料基材、粘合剂体系、填充料、助剂和岩棉纤维布；骨料基材选自花岗石颗粒或者大理石颗粒；粘合剂体系包括环氧树脂、固化剂和稀释剂。制备步骤为：(1)将骨料基材破碎后进行筛分；(2)将岩棉纤维布铺设在模具中；(3)称重环氧树脂、固化剂,稀释剂、助剂、填充料置于搅拌装置,搅拌均匀；(4)将骨料倒入搅拌装置,搅拌后得混合物料；(5)将混合物料注入到模具,高频振动；(6)模具常温养护24h。本发明岩棉混合树脂基矿物复合材料的弯曲强度高达60Mpa,同时改善了材料的阻尼性能；本发明可大幅度提高机床加工过程的的精度,消除机械振动对机床的影响。(The invention relates to a rock wool mixed resin matrix mineral composite material and a preparation method thereof, wherein the composite material comprises an aggregate substrate, an adhesive system, a filler, an auxiliary agent and rock wool fiber cloth; the aggregate substrate is selected from granite particles or marble particles; the adhesive system includes an epoxy resin, a curing agent, and a diluent. The preparation steps are as follows: (1) crushing the aggregate base material and then screening; (2) paving rock wool fiber cloth in a mold; (3) weighing epoxy resin, curing agent, diluent, auxiliary agent and filler, placing the epoxy resin, curing agent, diluent, auxiliary agent and filler in a stirring device, and uniformly stirring; (4) pouring the aggregate into a stirring device, and stirring to obtain a mixed material; (5) injecting the mixed material into a mould, and vibrating at high frequency; (6) and curing the mold for 24 hours at normal temperature. The bending strength of the rock wool mixed resin-based mineral composite material is as high as 60Mpa, and the damping performance of the material is improved; the invention can greatly improve the precision of the machine tool in the machining process and eliminate the influence of mechanical vibration on the machine tool.)

1. The rock wool mixed resin based mineral composite material is characterized by comprising an aggregate substrate, an adhesive system, a filler, an auxiliary agent and rock wool fiber cloth; the aggregate substrate is selected from granite particles or marble particles; the adhesive system includes an epoxy resin, a curing agent, and a diluent;

wherein, the mass ratio of the adhesive is 10-15%, the mass ratio of the aggregate is 75-80%, the mass ratio of the filler is 5-9%, and the mass ratio of the rock wool fiber cloth is 0.1-0.5%.

2. The rock wool hybrid resin-based mineral composite according to claim 1,

the diluent is 501, and the curing agent is triethylene tetramine and polyether amine D230 in a mass ratio of 1: 2, compounding to obtain; the mass ratio of the epoxy resin, the diluent and the curing agent in the adhesive system is (70-74): (8-10): (18-22).

3. The rock wool hybrid resin-based mineral composite according to claim 1,

the reinforcing agent is a silane coupling agent.

4. The rock wool hybrid resin-based mineral composite according to claim 1,

the filler is 200-mesh fly ash.

5. The rock wool hybrid resin-based mineral composite according to claim 1,

the particle size of the aggregate base material is 0.1mm-15 mm.

6. The rock wool hybrid resin-based mineral composite according to claim 5, wherein in the aggregate base material,

13 to 15 percent (mass ratio) of particles with the particle diameter of 0.1 to 0.5 mm;

14 to 15 percent (mass ratio) of particles with the particle diameter of 0.5 to 1 mm;

14 to 18 percent (mass ratio) of particles with the particle diameter of 1 to 4 mm;

13 to 16 percent (mass ratio) of particles with the particle diameter of 4 to 8 mm;

36 to 46 percent of particles with the particle diameter of 8 to 15mm (mass ratio).

7. The rock wool hybrid resin-based mineral composite according to claim 1,

the rock wool fiber cloth is 5mm in diameter and higher than 1100MPA in tensile strength.

8. The method for preparing the rock wool mixed resin-based mineral composite material as defined in any one of claims 1 to 7, which comprises the following steps:

(1) crushing the aggregate base material, screening, and classifying into 5 grades according to particle diameter: 0.1mm-0.5mm, 0.5mm-1mm, 1mm-4mm, 4mm-8mm, 8mm-15mm, cleaning all aggregates and drying;

(2) uniformly paving rock wool fiber cloth in a mold;

(3) weighing epoxy resin, curing agent, diluent, auxiliary agent and filler, placing the epoxy resin, curing agent, diluent, auxiliary agent and filler in a stirring device, and uniformly stirring for later use;

(4) pouring the aggregate into the stirring device in the step (3) according to the proportion, and continuously stirring uniformly to obtain a mixed material;

(5) injecting the mixed material into the die in the step (2), and vibrating at high frequency, wherein the vibration frequency is 80-100HZ, the vibration amplitude is 0.2-1mm, and the vibration time is 5-10 min;

(6) and curing the mold at normal temperature for 24h, opening the mold after molding, and continuing to perform machining at normal temperature for 3-5 days after opening the mold.

9. The method according to claim 8, wherein the rock wool fiber cloth in the step (2) is dried at 200 ℃.

Technical Field

The invention relates to a rock wool mixed resin-based mineral composite material and a preparation method thereof, belonging to the technical field of composite materials.

Background

With the continuous update of modern high-precision machining equipment, people find that the precision level of machine tool equipment can not be improved any more no matter how, and the precision of a machined product can not be improved, so that the machining efficiency, precision and quality are greatly influenced. Through research, vibration can occur in the transmission and processing processes of a machine tool system, and the metal material can not eliminate the vibration in a short time, so that the vibration can be gradually superposed, and the precision level of a processed product is sharply reduced. The low damping property of the metal material cannot further improve the machining performance of the machine, and the mineral composite material is found to have very good damping property by replacing the metal material with the mineral composite material. Can meet the requirements of dynamic and static performances and various physical performances of the machine tool. Therefore, the development of a mineral composite material with excellent performance is bound to become an important way for improving the performance of machine tool equipment.

In the prior art, a certain amount of auxiliary agents are added into chopped fibers with a certain length, then the chopped fibers, the adhesive, aggregate, filler and the like are uniformly stirred and injected into a product mold together, and a finished product is obtained by curing and molding, however, the preparation method of the mineral composite material cannot effectively improve the physical properties of the mineral composite material.

Disclosure of Invention

Aiming at the problems, the invention provides a rock wool mixed resin based mineral composite material and a preparation method thereof, and the invention improves the bending strength of the composite material and the damping performance of the composite material. The technical scheme of the invention is as follows;

a rock wool mixed resin based mineral composite material comprises an aggregate substrate, a binder system, a filler, an auxiliary agent and rock wool fiber cloth; the aggregate substrate is selected from granite particles or marble particles; the adhesive system includes an epoxy resin, a curing agent, and a diluent;

wherein, the mass ratio of the adhesive is 10-15%, the mass ratio of the aggregate is 75-80%, the mass ratio of the filler is 5-9%, and the mass ratio of the rock wool fiber cloth is 0.1-0.5%.

Preferably, the diluent in the invention is 501, and the curing agent is triethylene tetramine and polyether amine D230 in a mass ratio of 1: 2, compounding to obtain; the mass ratio of the epoxy resin, the diluent and the curing agent in the adhesive system is (70-74): (8-10): (18-22).

Preferably, the reinforcing agent in the invention is a silane coupling agent;

preferably, the filler in the invention is 200-mesh fly ash;

preferably, the particle size of the aggregate base material in the invention is 0.1mm-15 mm; more preferably, it is a mixture of more preferably,

13 to 15 percent (mass ratio) of particles with the particle diameter of 0.1 to 0.5 mm;

14 to 15 percent (mass ratio) of particles with the particle diameter of 0.5 to 1 mm;

14 to 18 percent (mass ratio) of particles with the particle diameter of 1 to 4 mm;

13 to 16 percent (mass ratio) of particles with the particle diameter of 4 to 8 mm;

36 to 46 percent of particles with the particle diameter of 8 to 15mm (mass ratio).

Preferably, the rock wool fiber cloth is the rock wool fiber cloth with the diameter of 5mm and the tensile strength of more than 1100 MPA.

The preparation method of the rock wool mixed resin-based mineral composite material comprises the following steps:

(1) crushing the aggregate base material, screening, and classifying into 5 grades according to particle diameter: 0.1mm-0.5mm, 0.5mm-1mm, 1mm-4mm, 4mm-8mm, 8mm-15mm, cleaning all aggregates and drying;

(2) uniformly paving rock wool fiber cloth in a mold;

(3) weighing epoxy resin, curing agent, diluent, auxiliary agent and filler, placing the epoxy resin, curing agent, diluent, auxiliary agent and filler in a stirring device, and uniformly stirring for later use;

(4) pouring the aggregate into the stirring device in the step (3) according to the proportion, and continuously stirring uniformly to obtain a mixed material;

(5) injecting the mixed material into the die in the step (2), and vibrating at high frequency, wherein the vibration frequency is 80-100HZ, the vibration amplitude is 0.2-1mm, and the vibration time is 5-10 min;

(6) and curing the mold at normal temperature for 24h, opening the mold after molding, and continuing to perform machining at normal temperature for 3-5 days after opening the mold.

Further, in the step (2), the rock wool fiber cloth needs to be dried at 200 ℃ in advance.

Compared with the prior art, the invention has the following advantages:

the bending strength of the rock wool mixed resin-based mineral composite material obtained by the invention is up to 60Mpa, and the damping performance of the material is also greatly improved; the rock wool mixed resin-based mineral composite material can greatly improve the precision of the machine tool in the machining process and eliminate the influence of mechanical vibration on the machine tool.

Detailed Description

The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. The examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.

Example 1: rock wool mixed resin-based mineral composite material and preparation method thereof

The composite material comprises granite particles as an aggregate base material, an adhesive system, a filler, an auxiliary agent and rock wool fiber cloth; the adhesive system includes an epoxy resin, a curing agent, and a diluent;

in the aggregate base material, 15 percent (mass ratio) of granite particles with the diameter of 0.1mm-0.5 mm;

15 percent (mass ratio) of granite particles with the particle diameter of 0.5mm-1 mm;

17 percent (mass ratio) of granite particles with the particle diameter of 1mm-4 mm;

13 percent (mass ratio) of granite particles with the particle size of 4mm-8 mm;

40 percent (mass ratio) of granite particles with the particle diameter of 8mm-15 mm.

Wherein the mass ratio of the adhesive system is 12.7%, the mass ratio of the aggregate is 79%, the mass ratio of the filler is 8%, and the mass ratio of the rock wool fiber cloth is 0.3%.

The diluent is 501, and the curing agent is triethylene tetramine and polyether amine D230 in a mass ratio of 1: 2, compounding to obtain; the mass ratio of the epoxy resin, the diluent and the curing agent in the adhesive system is 70: 10: 20.

the reinforcing agent is a silane coupling agent; the filler is 200 meshes of fly ash;

the preparation method of the rock wool mixed resin-based mineral composite material comprises the following steps:

(1) cleaning and drying the aggregate base material;

(2) uniformly paving rock wool fiber cloth subjected to drying treatment at 200 ℃ in advance in a mold;

(3) weighing epoxy resin, a curing agent, a diluent, an auxiliary agent and a filler, placing the epoxy resin, the curing agent, the diluent, the auxiliary agent and the filler in a stirring device, and uniformly stirring for later use;

(4) pouring the aggregate into the stirring device in the step (3) according to the proportion, and continuously stirring uniformly to obtain a mixed material;

(5) injecting the mixed material into the die in the step (2), and vibrating at high frequency, wherein the vibration frequency is 90HZ, the vibration amplitude is 0.5mm, and the vibration time is 8 min;

(6) and curing the mold at normal temperature for 24h, opening the mold after molding, and continuing for 4 days at normal temperature after opening the mold to perform machining.

According to the detection, the bending strength of the rock wool mixed resin-based mineral composite material obtained in the embodiment is 60MPa, and the damping ratio is 0.247.

Example 2: rock wool mixed resin-based mineral composite material and preparation method thereof

The composite material comprises marble particles as an aggregate base material, an adhesive system, a filler, an auxiliary agent and rock wool fiber cloth; the adhesive system includes an epoxy resin, a curing agent, and a diluent;

in the aggregate base material, 15 percent (mass ratio) of granite particles with the particle size of 0.1mm-0.5 mm;

15 percent (mass ratio) of marble particles with the particle size of 0.5mm-1 mm;

16 percent (mass ratio) of marble particles with the particle size of 1mm-4 mm;

15 percent (mass ratio) of marble particles with the particle size of 4mm-8 mm;

39 mass percent of marble particles with the particle diameter of 8mm-15 mm.

Wherein the mass ratio of the adhesive system is 14.5%, the mass ratio of the aggregate is 78%, the mass ratio of the filler is 7%, and the mass ratio of the rock wool fiber cloth is 0.5%.

The diluent is 501, and the curing agent is triethylene tetramine and polyether amine D230 in a mass ratio of 1: 2, compounding to obtain; the mass ratio of the epoxy resin, the diluent and the curing agent in the adhesive system is 73.5: 8.5: 18.

the reinforcing agent is a silane coupling agent; the filler is 200 meshes of fly ash;

the preparation method of the rock wool mixed resin-based mineral composite material comprises the following steps:

(1) cleaning and drying the aggregate base material;

(2) uniformly paving rock wool fiber cloth in a mold;

(3) weighing epoxy resin, a curing agent, a diluent, an auxiliary agent and a filler, placing the epoxy resin, the curing agent, the diluent, the auxiliary agent and the filler in a stirring device, and uniformly stirring for later use;

(4) pouring the aggregate into the stirring device in the step (3) according to the proportion, and continuously stirring uniformly to obtain a mixed material;

(5) injecting the mixed material into the die in the step (2), and vibrating at high frequency, wherein the vibration frequency is 85HZ, the vibration amplitude is 0.3mm, and the vibration time is 6 min;

(6) and curing the mold at normal temperature for 24h, opening the mold after molding, and continuing for 5 days at normal temperature after opening the mold to perform machining.

According to the detection, the bending strength of the rock wool mixed resin-based mineral composite material obtained in the embodiment is 53MPa, and the damping ratio is 0.185.

Example 3: rock wool mixed resin-based mineral composite material and preparation method thereof

The composite material comprises granite particles as an aggregate base material, an adhesive system, a filler, an auxiliary agent and rock wool fiber cloth; the adhesive system includes an epoxy resin, a curing agent, and a diluent;

13 percent (mass ratio) of granite particles with the particle diameter of 0.1mm-0.5 mm;

15 percent (mass ratio) of granite particles with the particle diameter of 0.5mm-1 mm;

18 percent (mass ratio) of granite particles with the particle diameter of 1mm-4 mm;

16 percent (mass ratio) of granite particles with the particle diameter of 4mm-8 mm;

38 percent (mass ratio) of granite particles with the particle diameter of 8mm-15 mm.

Wherein the mass ratio of the adhesive system is 14%, the mass ratio of the aggregate is 78%, the filler ratio is 7.8%, and the mass ratio of the rock wool fiber cloth is 0.2%.

The diluent is 501, and the curing agent is triethylene tetramine and polyether amine D230 in a mass ratio of 1: 2, compounding to obtain; the mass ratio of the epoxy resin, the diluent and the curing agent in the adhesive system is 73: 9: 18.

the reinforcing agent is a silane coupling agent; the filler is 200 meshes of fly ash;

the preparation method of the rock wool mixed resin-based mineral composite material comprises the following steps:

(1) cleaning and drying the aggregate base material;

(2) uniformly paving rock wool fiber cloth subjected to drying treatment at 200 ℃ in advance in a mold;

(3) weighing epoxy resin, a curing agent, a diluent, an auxiliary agent and a filler, placing the epoxy resin, the curing agent, the diluent, the auxiliary agent and the filler in a stirring device, and uniformly stirring for later use;

(4) pouring the aggregate into the stirring device in the step (3) according to the proportion, and continuously stirring uniformly to obtain a mixed material;

(5) injecting the mixed material into the die in the step (2), and vibrating at high frequency, wherein the vibration frequency is 85HZ, the vibration amplitude is 0.7mm, and the vibration time is 6 min;

(6) and curing the mold at normal temperature for 24h, opening the mold after molding, and continuing for 3 days at normal temperature after opening the mold to perform machining.

According to the detection, the bending strength of the rock wool mixed resin-based mineral composite material obtained in the embodiment is 56MPa, and the damping ratio is 0.221.