阅读说明：本技术 一种环保复合矿物棉泡沫保温板及其制备方法 (Environment-friendly composite mineral wool foam insulation board and preparation method thereof ) 是由 詹祖成 李开建 曾祖铭 于 2020-07-28 设计创作，主要内容包括：一种环保复合矿物棉泡沫保温板及其制备方法,通过以丁晴橡胶、无机纤维和有机纤维为主要原料,顺丁橡胶和气凝胶为辅助材料,添加了硬脂酸钙、发泡剂和阻燃剂作为辅助助剂,并以滑石粉作为填充剂制得环保复合矿物棉泡沫保温板,具有导热系数低、无粉尘、不易燃、不刺痒、安全和环保的特点,且具有良好的绝热性能和压缩回弹性能,能广泛应用于建筑等领域。(An environment-friendly composite mineral wool foam insulation board and a preparation method thereof are disclosed, wherein nitrile rubber, inorganic fiber and organic fiber are used as main raw materials, butadiene rubber and aerogel are used as auxiliary materials, calcium stearate, foaming agent and flame retardant are added as auxiliary additives, and talcum powder is used as a filling agent to prepare the environment-friendly composite mineral wool foam insulation board.)

1. The environment-friendly composite mineral wool foam insulation board is characterized by comprising the following raw material components in parts by weight:

2. the environment-friendly composite mineral wool foam insulation board as claimed in claim 1, further comprising the following raw material components in parts by weight:

0.1-1.0 part of antioxidant

0.1-1.0% of antioxidant

0.1-1.0 of mica powder.

3. The environmentally friendly composite mineral wool foam insulation board of claim 1, wherein the inorganic fibers are glass fibers or ceramic fibers.

4. The environmentally friendly composite mineral wool foam insulation board of claim 1, wherein the organic fiber is wood fiber, paper fiber or bamboo fiber.

5. The environmentally friendly composite mineral wool foam insulation board of claim 1, wherein the nitrile rubber is nitrile rubber 2880.

6. The environment-friendly composite mineral wool foam insulation board of claim 1, wherein the weight portion ratio of the nitrile rubber is 20.0-30.0.

7. The environment-friendly composite mineral wool foam insulation board of claim 6, wherein the organic fiber is 15.0-20.0 parts by weight.

8. The preparation method of the environment-friendly composite mineral wool foam insulation board is characterized by comprising the following steps of:

one banburying step one: mixing butadiene-acrylonitrile rubber and butadiene rubber, and banburying for 30s to obtain an intermediate product A;

and a second primary banburying step: mixing talcum powder, calcium stearate and a flame retardant with the intermediate product A, and banburying to 130-135 ℃ to obtain an intermediate product B;

a third step of primary banburying: mixing inorganic fibers, organic fibers and aerogel with the intermediate product B, and banburying to 145-155 ℃ to obtain an intermediate product C;

and a fourth step of primary banburying: mixing a foaming agent with the intermediate product C, and pressing for 60s through a lower top bolt to obtain an intermediate product D;

a primary open mill step: milling the intermediate product D for 5min, pressing into tablets, and cooling for 20min to obtain a primary sheet;

and (3) secondary banburying: mixing an anti-aging agent, an antioxidant and mica powder with the primary sheet, and banburying for 60s to obtain an intermediate product E;

and (3) secondary open milling: the intermediate product E is milled for 5min, pressed into tablets and cooled for 10min to obtain a secondary sheet;

an extrusion step: forming the secondary sheet through a die to form a plate;

and (3) a vulcanization foaming step: and vulcanizing and foaming the board to obtain the environment-friendly composite mineral wool foam insulation board.

Technical Field

The invention relates to the technical field of insulation boards, in particular to an environment-friendly composite mineral wool foam insulation board and a preparation method thereof.

Background

The foamed asbestos is a new-type light high-efficiency heat-insulating energy-saving material, and is a porous felt-like material with net structure made up by using chrysotile as main raw material and making asbestos fibre fully pass through the processes of pulping, foaming, forming and drying under the action of anionic surfactant, and has the characteristics of light capacity, low heat-conducting coefficient, good heat-insulating property, good water-proofing property, corrosion resistance, sound-absorbing and shock-proofing properties and no irritation to skin, and can be arbitrarily cut, bent and quickly constructed.

However, asbestos is known as a carcinogen because it generates dust during use and causes lung diseases after being inhaled by a human body, and thus it has a great harm to the human body.

Disclosure of Invention

Based on the problems mentioned above, the invention provides an environment-friendly composite mineral wool foam insulation board and a preparation method thereof.

The technical scheme for solving the technical problems is as follows: an environmentally friendly composite mineral wool foam insulation board comprising: the raw material components with the following weight portions:

in one embodiment, the feed also comprises the following raw material components in parts by weight:

0.1-1.0 part of antioxidant

0.1-1.0% of antioxidant

0.1-1.0 of mica powder.

In one embodiment, the inorganic fibers are glass fibers or ceramic fibers.

In one embodiment, the organic fiber is a wood fiber, a paper fiber, or a bamboo fiber.

In one embodiment, the nitrile rubber is nitrile rubber 2880.

In one embodiment, the proportion of the weight portion of the nitrile rubber is 20.0-30.0.

In one embodiment, the organic fiber is 15.0-20.0 parts by weight.

The preparation method of the environment-friendly composite mineral wool foam insulation board is characterized by comprising the following steps of:

one banburying step one: mixing butadiene-acrylonitrile rubber and butadiene rubber, and banburying for 30s to obtain an intermediate product A;

and a second primary banburying step: mixing talcum powder, calcium stearate and a flame retardant with the intermediate product A, and banburying to 130-135 ℃ to obtain an intermediate product B;

a third step of primary banburying: mixing inorganic fibers, organic fibers and aerogel with the intermediate product B, and banburying to 145-155 ℃ to obtain an intermediate product C;

and a fourth step of primary banburying: mixing a foaming agent with the intermediate product C, and pressing for 60s through a lower top bolt to obtain an intermediate product D;

a primary open mill step: milling the intermediate product D for 5min, pressing into tablets, and cooling for 20min to obtain a primary sheet;

and (3) secondary banburying: mixing an anti-aging agent, an antioxidant and mica powder with the primary sheet, and banburying for 60s to obtain an intermediate product E;

and (3) secondary open milling: the intermediate product E is milled for 5min, pressed into tablets and cooled for 10min to obtain a secondary sheet;

an extrusion step: forming the secondary sheet through a die to form a plate;

and (3) a vulcanization foaming step: and vulcanizing and foaming the board to obtain the environment-friendly composite mineral wool foam insulation board.

The invention has the beneficial effects that: the invention provides an environment-friendly composite mineral wool foam insulation board and a preparation method thereof, wherein butadiene rubber, inorganic fiber and organic fiber are used as main raw materials, butadiene rubber and aerogel are used as auxiliary materials, calcium stearate, a foaming agent and a flame retardant are added as auxiliary additives, and talcum powder is used as a filling agent to prepare the environment-friendly composite mineral wool foam insulation board.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic flow chart of a preparation method of an environment-friendly composite mineral wool foam insulation board according to an embodiment of the invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, in one embodiment, an environment-friendly composite mineral wool foam insulation board comprises the following raw material components in parts by weight:

in this embodiment, the main raw materials forming the environment-friendly composite mineral wool foam insulation board are butadiene acrylonitrile rubber, inorganic fibers and organic fibers, wherein the butadiene acrylonitrile rubber is butadiene acrylonitrile rubber 2880 in type, the inorganic fibers are glass fibers or ceramic fibers, the organic fibers are wood fibers, paper fibers or bamboo fibers, the butadiene acrylonitrile rubber is an auxiliary material for improving the performance of the butadiene acrylonitrile rubber, the aerogel is low in heat conductivity coefficient, good in heat insulation effect, stable in physicochemical property, non-combustible at high temperature, completely waterproof, non-toxic, environment-friendly, large in specific surface area and very strong in adsorption capacity on the inorganic fibers, and various auxiliary agents are matched to prepare the environment-friendly composite mineral wool foam insulation board. The calcium stearate is used for a plastic cold-resistant plasticizer, a release agent, a heat stabilizer, a surfactant, a rubber vulcanization accelerator, a waterproof agent and a polishing agent, is beneficial to preventing the coking condition in the butadiene-acrylonitrile rubber processing process, can prevent the color change of a product placed in a sulfide, and is low in price, easy to obtain, low in toxicity and good in processing performance. Further, the environment-friendly composite mineral wool foam insulation board further comprises the following components: 5.0-10.0 parts by weight of stearic acid, wherein the stearic acid can be used as a lubricant and can also be used as an emulsifier and a solubilizer, so that the components can be uniformly mixed, and the properties of the mixed components in unit weight are ensured to be the same.

In this embodiment, the flame retardant is chlorinated paraffin, the chlorinated paraffin has the advantages of low volatility, flame retardance and good electrical insulation, the flame retardant can also be antimony trioxide, the flame retardant can also be used together with other flame retardants and smoke suppressants, a synergistic effect can be generated among the components, the antimony trioxide is firstly melted on the surface of a material at the initial stage of combustion to form a protective film to isolate air, the combustion temperature is reduced through an internal endothermic reaction, and finally, the antimony trioxide is gasified at a high temperature to dilute the oxygen concentration in the air, so that the flame retardant effect is achieved. The foaming agent can enable the product to generate a foaming effect with compact and uniform pore diameter, so that the physical properties such as elasticity and the like of the product are improved, the foaming agent can be an AC foaming agent, the AC foaming agent has stable performance, is nonflammable, pollution-free, nontoxic and tasteless, does not corrode a die, does not dye the product, can adjust the decomposition temperature, does not influence the curing and forming speed, is uniform in continuous foaming and ideal in pore structure, stearic acid can also be used as the foaming agent, the activity of the foaming agent can be improved, and the foaming agent can further fully exert the maximum foaming effect. (ii) a The talcum powder is used as an inorganic flame-retardant filler and a strengthening and modifying filler, is used for improving the shape stability of products prepared from the nitrile rubber, inorganic fibers and organic fibers, increasing the tensile strength, the shear strength, the flexural strength and the pressure strength of the products, and improving the processing performance and the mechanical property of the products.

Further, the environment-friendly composite mineral wool foam insulation board of the invention further comprises: 0.1 to 1.0 portion of anti-aging agent, 0.1 to 1.0 portion of antioxidant and 0.1 to 1.0 portion of mica powder, the anti-aging agent is used for delaying the aging of high molecular compound, the model of the anti-aging agent is anti-aging agent 4020, the antioxidant is cytidine triphosphate, is used for preventing the rubber sizing material from generating an early vulcanization phenomenon in the processing process, delaying the pre-vulcanization degree of the sizing material, solving the problem that the finished product is easy to crack due to foaming, the mica powder has the characteristics of good elasticity, toughness, insulativity, high temperature resistance and strong adhesive force, is an excellent additive, is used for filling the environment-friendly composite mineral wool foam insulation board, the flaky filler forms basically parallel orientation arrangement in the insulation board, has good barrier effect, meanwhile, the environment-friendly composite mineral wool foam insulation board has good infrared radiation capability, so that the environment-friendly composite mineral wool foam insulation board has an excellent heat radiation effect.

In order to better improve the combination degree of the organic fibers and the butadiene acrylonitrile rubber, the strength of the environment-friendly composite mineral wool foam insulation board is further improved. In one embodiment, the environmentally friendly composite mineral wool foam insulation board further comprises: 3.0 to 7.0 parts by weight of dodecyl glycidyl ether. Specifically, the weight ratio of the organic fiber is 15.0-20.0, the weight ratio of the nitrile rubber is 20.0-30.0, the surface of the organic fiber contains a large amount of hydroxyl with strong polarity, the nitrile rubber has weak polarity, poor bonding force and poor compatibility, the surface of the organic fiber is modified by the dodecyl glycidyl ether, namely the dodecyl glycidyl ether contains a twelve-carbon hydrocarbon long chain and an epoxy group, the hydrocarbon long chain is similar to the polarity of the nitrile rubber, the compatibility and the bonding force of the two are good, the epoxy group can be subjected to ring opening under the condition of ammonia catalysis and reacts with the hydroxyl on the surface of the organic fiber to form an ether bond and is bonded to the surface of the organic fiber, so that one end of the dodecyl glycidyl ether molecule is connected with the surface of the organic fiber through the ether bond, the other end of the long hydrocarbon chain is combined with the butadiene-acrylonitrile rubber through intermolecular acting force, so that the organic fiber can be well dispersed into the butadiene-acrylonitrile rubber, the butadiene-acrylonitrile rubber compounded with the organic fiber is further used for preparing the environment-friendly composite mineral wool foam insulation board, the strength of the environment-friendly composite mineral wool foam insulation board is improved, the environment-friendly composite mineral wool foam insulation board combines the advantages of excellent oil resistance, high wear resistance and high heat resistance of the butadiene-acrylonitrile rubber, combines the advantages of environmental protection and natural health of the organic fiber, replaces asbestos in the traditional process, further avoids the condition of lung diseases caused by the fact that a human body inhales asbestos dust, meanwhile, the organic fiber is naturally easy to decompose, environment-friendly and safe, and is connected with the butadiene-acrylonitrile rubber through the dodecyl glycidyl ether in a microstructure manner, not only the strength of the environment-friendly composite mineral wool foam insulation board is improved, but also the elastic performance is improved.

In order to improve the mechanical properties of the environment-friendly composite mineral wool foam insulation board, in one embodiment, the aerogel adsorbs the inorganic fibers to construct a fiber-based aerogel material, and combines the characteristics of macroscopic fibers with the structural characteristics of the aerogel, i.e., the inorganic fibers have the characteristics of particle-type aerogel and simultaneously integrate the advantages of macroscopic inorganic fibers, such as good flexibility, structural uniformity, shape memory performance, and the like, the inorganic fibers not only serve as a framework and a reinforcing material, but also improve the compressive strength and structural stability of the whole aerogel, and improve the mechanical properties of the aerogel, so that the internal void structure of the aerogel can be maintained for a long time, the environment-friendly composite mineral wool foam insulation board has good mechanical properties, and the pore structure of the aerogel is maintained in a gradient distribution, therefore, the environment-friendly composite mineral wool foam insulation board has a low heat conductivity coefficient.

Further, in order to better form the pore structure with the step distribution by the aerogel, in one embodiment, the components of the environment-friendly composite mineral wool foam insulation board further comprise: 3.0-10.0 parts by weight of alkyd resin. Specifically, the alkyd resin is an oil-modified polyester resin formed by condensation polymerization of polyol, phthalic anhydride and fatty acid or fatty acid triglyceride, and the inorganic fiber contains abundant hydroxyl functional groups, so that an assembly point is provided for in-situ reaction of aldehyde functional groups in the alkyd resin, the crosslinking density of the alkyd resin and the inorganic fiber is increased by reaction, and a step-distributed pore structure is formed and can be regulated through the synergistic effect among the aerogel, the inorganic fiber and the alkyd resin, so that the alkyd resin has the performances of small density, high strength and low thermal conductivity.

In one embodiment, the invention provides a preparation method of an environment-friendly composite mineral wool foam insulation board in the above embodiments, and specifically, the preparation method of the environment-friendly composite mineral wool foam insulation board comprises the following steps:

and step 110, mixing the butadiene-acrylonitrile rubber and the butadiene rubber, and banburying for 30s to obtain an intermediate product A, which is also called a first banburying step.

Specifically, in this step, 15.0 to 35.0 parts by weight of butadiene acrylonitrile rubber and 2.5 to 4.0 parts by weight of butadiene rubber are mixed and banburying is performed by a banbury mixer for 30 seconds to obtain an intermediate product a, and the butadiene acrylonitrile rubber mentioned in this step may be 2880 butadiene acrylonitrile rubber.

And 120, mixing talcum powder, calcium stearate and a flame retardant with the intermediate product A, and banburying to 130-135 ℃ to obtain an intermediate product B, wherein the step is also called a primary banburying step II.

Specifically, in the step, 20.0-30.0 parts by weight of talcum powder, 5.0-15.0 parts by weight of calcium stearate and 5.0-10.0 parts by weight of flame retardant are added into an internal mixer to be mixed with the intermediate product A, and the mixture is internally mixed to 135 ℃ to obtain an intermediate product B. Wherein, the components can be better dispersed by adjusting the time of primary plastication, thereby solving the problem of compatibility during the mixing of the components.

Step 130, mixing inorganic fibers, organic fibers and aerogel with the intermediate product B, and banburying to 145-155 ℃ to obtain an intermediate product C, which is also called a primary banburying step three.

Specifically, in this step, inorganic fibers, organic fibers, and aerogel are mixed with the intermediate product B, that is, 15.0 to 25.0 parts by weight of inorganic fibers, 15.0 to 25.0 parts by weight of organic fibers, and 3.0 to 7.0 parts by weight of aerogel are added into an internal mixer to be mixed with the intermediate product B, and the mixture is internally mixed to 150 ℃, so as to obtain an intermediate product C.

In a preferred embodiment, in the third internal mixing step, 3.0 to 7.0 parts by weight of dodecyl glycidyl ether is further added to mix with the intermediate product B, one end of the dodecyl glycidyl ether molecule is connected with the surface of the organic fiber through an ether bond, and the other end of the long hydrocarbon chain is combined with the nitrile rubber through intermolecular force, so that the organic fiber can be well dispersed in the nitrile rubber, and further, 3.0 to 10.0 parts by weight of alkyd resin is further added, and through the synergistic effect among the aerogel, the inorganic fiber and the alkyd resin, a pore structure with step distribution is formed, and the pore structure is adjustable, so that the carbon fiber has the properties of small density, high strength and low thermal conductivity.

And 140, mixing a foaming agent with the intermediate product C, and pressing for 60s through a lower ram to obtain an intermediate product D, wherein the step is also called a primary banburying step four.

Specifically, in this step, 5.0 to 10.0 parts by weight of a foaming agent is added to an internal mixer to be mixed with the intermediate product C, and the mixture is pressed by a lower ram for 60 seconds to obtain an intermediate product D.

And 150, open milling the intermediate product D for 5min, pressing into tablets, and cooling for 20min to obtain a primary sheet, wherein the step is also called as a primary open milling step.

Specifically, the roll mixing in this step is carried out by an open mill, for example, the intermediate product D obtained after internal mixing is transferred to a roll mixer to roll mix it. Wherein the cooling can be carried out by adopting an air cooling machine group.

And 160, mixing the anti-aging agent, the antioxidant and the mica powder with the primary sheet, and banburying for 60s to obtain an intermediate product E, wherein the step is also called a secondary banburying step.

Specifically, the obtained primary sheet is transferred to an internal mixing system, 0.1-1.0 part by weight of anti-aging agent, 0.1-1.0 part by weight of antioxidant and 0.1-1.0 part by weight of mica powder are added and mixed with the primary sheet, and an intermediate product E is obtained after internal mixing for 60 seconds. The antioxidant is antioxidant 4020, and the antioxidant is cytidine triphosphate.

And 170, open milling the intermediate product E for 5min, pressing into tablets, and cooling for 10min to obtain secondary sheets, wherein the step is also called a secondary open milling step.

Specifically, the roll mixing in this step is carried out by an open mill, for example, the intermediate product E obtained after internal mixing is transferred to a roll mixer to roll mix it. Wherein the cooling can be carried out by adopting an air cooling machine group.

And step 180, forming the secondary sheet through a die to form a plate. This step is also referred to as the extrusion step.

The sheet material in the step is formed through a die, specifically, the forming is completed through an extruder, and in the extruder, a secondary sheet material is formed through a specific die to form the sheet material.

And 190, vulcanizing and foaming the board to obtain the environment-friendly composite mineral wool foam insulation board. This step is also referred to as the vulcanization foaming step.

Specifically, the vulcanization foaming in the step is carried out in an oven, and the board formed by the extruder is vulcanized and foamed in the oven to form the environment-friendly composite mineral wool foam insulation board.

The invention is further described below with reference to specific examples.