CN103011690A - Composite external wall heat-insulating material and preparation method thereof - Google Patents

Abstract

The invention relates to a composite external wall thermal insulation material and a preparation method thereof. The raw materials include the following components and contents in parts by weight: 20-50 polystyrene particles, 10-40 expanded perlite, 5-25 glass beads, and 3 inorganic fibers ～30, flame retardant 5～20, thermosetting resin 10～40, the above raw materials are mixed and bulked, and then pressed to double-sided composite alkali-resistant glass mesh cloth by a laminator to obtain a composite exterior wall insulation material. Compared with the prior art, the external wall insulation material prepared by the present invention is tested according to the GB8624-2006 standard, the temperature rise does not exceed 30°C, the mass loss rate does not exceed 20%, and the continuous burning time does not exceed 15s.

Description

Composite exterior wall insulation material and preparation method thereof

technical field

The invention belongs to the field of building materials, and in particular relates to a composite external wall thermal insulation material and a preparation method thereof.

Background technique

In China's "Twelfth Five-Year Plan", it is necessary to continue to complete the overall goal of building energy efficiency of 65%. In fact, in the current Chinese building energy-saving thermal insulation technology system, only high-efficiency energy-saving foam plastics EPS, XPS, and PU can be selected as the main thermal insulation material, while other thermal insulation materials such as inorganic materials cannot be used as the main thermal insulation material for building energy saving of 65% due to their poor thermal insulation effect. .

However, compared with traditional inorganic building insulation materials, polymer foam materials including PU have the disadvantages of flammability and fast flame propagation, especially the problem of large smoke production, which has attracted the attention of the whole society. In recent years, the "2.9" CCTV affiliated building fire, the "11.15" fire in the teacher's apartment in Jing'an District, Shanghai, and the "2.3" Shenyang Dynasty Wanxin International Building wall insulation polymer foam fire accident have caused the market to have a certain understanding of the fire performance of the insulation board. It also directly contributed to Gongtongzi (2009) No. 46 "Interim Provisions on Fire Protection of Civil Building External Thermal Insulation System and Exterior Wall Decoration" and Gongxiao [2011] No. 65 "On Further Clarification of Civil Building External Thermal Insulation The release of the two documents "Notice on Relevant Requirements for Fire Protection Supervision and Management of Materials", especially the No. 65 document, which requires that the combustion performance of building insulation materials must meet Class A requirements, is undoubtedly a thunderbolt to China's building insulation industry.

However, in order to meet the national document No. 65, it is necessary to develop high-efficiency composite insulation boards, which will replace single insulation boards and become the mainstream of the future insulation board market. Composite thermal insulation boards will surely provide impetus to the process of building energy conservation in my country.

Contents of the invention

The object of the present invention is to provide a composite exterior wall insulation material with small mass loss and short burning duration and a preparation method thereof in order to overcome the above-mentioned defects in the prior art.

The purpose of the present invention can be achieved through the following technical solutions:

A composite exterior wall thermal insulation material. The raw materials of the thermal insulation material include the following components and contents in parts by weight: 20-50 polystyrene particles, 10-40 expanded perlite, 5-25 glass microspheres, 3-30 inorganic fibers, Flame retardant 5-20, thermosetting resin 10-40, the above-mentioned raw materials are pressed on the alkali-resistant glass grid cloth.

The inorganic fiber is any one of glass fiber, aluminum silicate ceramic fiber, crystalline alumina fiber, mineral fiber or sepiolite fiber.

The flame retardant is any one of ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, graphite or red phosphorus.

The thermosetting resin is any one of epoxy resin, phenolic resin or urea-formaldehyde resin.

The preparation method of composite external wall insulation material comprises the following steps:

(1) According to the parts by weight of each component, first mix polystyrene particles, expanded perlite, and glass microspheres uniformly, then add flame retardant and heat-curing resin to mix, and finally add inorganic fibers to mix and swell;

(2) Add the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, heat, pressurize, dry and discharge to obtain a composite external wall insulation material.

The heating temperature in step (2) is from room temperature to 300°C.

The pressurized pressure in step (2) is 5-30 MPa.

Compared with the existing thermal insulation board technology, due to the combination of organic styrene particles and inorganic expanded perlite and other materials in the present invention, it breaks through the shortcomings of the current pure inorganic external wall thermal insulation board system, which is easy to fall off due to its own weight, and breaks through the pure organic Insufficient that the system is easy to burn, and because of the addition of glass fiber, it plays the role of reinforcement in the product, so that the external wall insulation material prepared by the present invention is tested according to the GB8624-2006 standard, the temperature rise does not exceed 30 °C, and the mass loss rate It does not exceed 20%, and the continuous burning time does not exceed 15s, which is in line with the national policies and regulations on external wall insulation boards.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments.

Example 1

The exterior wall insulation material of this embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of glass fibers, 15 parts of ammonium polyphosphate, epoxy resin 30 servings.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add ammonium polyphosphate, and epoxy resin to mix, and finally add glass fiber materials to mix and expand loose.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example is tested according to the GB8624-2006 standard, the temperature rise is 20°C, the mass loss rate is 18%, and the continuous burning time is 10s.

Example 2

The external wall insulation material of the present embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of crystalline alumina fibers, 15 parts of magnesium hydroxide, 30 parts of urea-formaldehyde resin.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add magnesium hydroxide, urea-formaldehyde resin and mix, and finally add crystalline alumina fiber materials to the mixture Uniform fluffy.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 23°C, the mass loss rate was 17%, and the continuous burning time was 7s.

Example 3

The external wall insulation material of this embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of sepiolite fiber, 15 parts of red phosphorus, phenolic resin 30 servings.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix the polystyrene particles, expanded perlite, and glass microspheres evenly, then add red phosphorus and phenolic resin to mix, and finally add the sepiolite fiber material into the mixed expanded loose.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 15°C, the mass loss rate was 10%, and the continuous burning time was 9s.

Example 4

The external wall insulation material of this embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of mineral fiber, 15 parts of graphite, and 30 parts of phenolic resin.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add graphite and phenolic resin for mixing, and finally add mineral fiber materials to mix and swell.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 18°C, the mass loss rate was 17%, and the continuous burning time was 7s.

Example 5

The external wall insulation material of the present embodiment is composed of the following components by weight: 20 parts of polystyrene particles, 40 parts of expanded perlite, 5 parts of glass microspheres, 30 parts of glass fibers, 5 parts of ammonium polyphosphate, and 15 parts of phenolic resin. share.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add ammonium polyphosphate, phenolic resin and mix, and finally add glass fiber materials to mix and bulk .

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 200 ° C, a pressure of 5 MPa, and then dry and discharge.

The external wall insulation material prepared in this example is tested according to the GB8624-2006 standard, the temperature rise is 10°C, the mass loss rate is 5%, and the continuous burning time is 5s.

Example 6

The external wall insulation material of the present embodiment is composed of the following components in parts by weight: 50 parts of polystyrene particles, 10 parts of expanded perlite, 25 parts of glass microspheres, 3 parts of glass fibers, 20 parts of ammonium polyphosphate, and 40 parts of phenolic resin share.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add ammonium polyphosphate, phenolic resin and mix, and finally add glass fiber materials to mix and bulk .

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 27°C, the mass loss rate was 20%, and the continuous burning time was 14s.

Example 7

The external wall insulation material of the present embodiment is composed of the following components by weight: 20 parts of polystyrene particles, 40 parts of expanded perlite, 5 parts of glass microspheres, 27 parts of aluminum silicate ceramic fibers, 7 parts of magnesium hydroxide, 10 parts of epoxy resin.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add magnesium hydroxide and epoxy resin, and finally add aluminum silicate ceramic fiber materials Mix well.

(2) Add the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 300°C and a pressure of 15 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 16°C, the mass loss rate was 9%, and the continuous burning time was 8s.

Example 8

The external wall insulation material of this embodiment consists of the following components in parts by weight: 20 parts of polystyrene particles, 30 parts of expanded perlite, 25 parts of glass microspheres, 15 parts of mineral fiber, 5 parts of graphite, and 13 parts of urea-formaldehyde resin.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add graphite and urea-formaldehyde resin for mixing, and finally add mineral fiber materials to mix and swell.

(2) Add the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 200°C, and a pressure of 30MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 14°C, the mass loss rate was 16%, and the continuous burning time was 11s.

Example 9

The external wall insulation material of the present embodiment is composed of the following components by weight: 40 parts of polystyrene particles, 15 parts of expanded perlite, 15 parts of glass microspheres, 9 parts of crystalline alumina fiber, 18 parts of aluminum hydroxide, 34 parts of epoxy resin.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add aluminum hydroxide and epoxy resin, and finally add crystalline alumina fiber materials Mix well.

(2) Add the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 50°C and a pressure of 12 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 26°C, the mass loss rate was 18%, and the continuous burning time was 13s.

Example 10

The external wall insulation material of the present embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 20 parts of expanded perlite, 20 parts of glass microspheres, 27 parts of sepiolite fiber, 16 parts of red phosphorus, phenolic resin 30 servings.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix the polystyrene particles, expanded perlite, and glass microspheres evenly, then add red phosphorus and phenolic resin to mix, and finally add the sepiolite fiber material into the mixed expanded loose.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 130° C., a pressure of 9 MPa, dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 22°C, the mass loss rate was 15%, and the continuous burning time was 14s.

Example 11

The outer wall insulation material of the present embodiment is composed of the following components by weight: 23 parts of polystyrene particles, 35 parts of expanded perlite, 14 parts of glass microspheres, 13 parts of aluminum silicate ceramic fiber, 9 parts of ammonium polyphosphate, 15 parts of urea-formaldehyde resin.

Its preparation method is as follows:

(1) According to the parts by weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add ammonium polyphosphate and urea-formaldehyde resin for mixing, and finally add aluminum silicate ceramic fiber materials to the mixture Uniform fluffy.

(2) Add the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 220 ° C, a pressure of 25 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 23°C, the mass loss rate was 14%, and the continuous burning time was 12s.

Example 12

The external wall insulation material of the present embodiment is composed of the following components by weight: 45 parts of polystyrene particles, 24 parts of expanded perlite, 9 parts of glass microspheres, 19 parts of glass fiber, 17 parts of magnesium hydroxide, epoxy resin 25 servings.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add magnesium hydroxide, and epoxy resin to mix, and finally add glass fiber materials to mix and expand loose.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 90°C and a pressure of 20 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 24°C, the mass loss rate was 18%, and the continuous burning time was 14s.

Example 13

The external wall insulation material of the present embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of aluminum silicate ceramic fibers, 15 parts of ammonium polyphosphate, 30 parts of epoxy resin.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add ammonium polyphosphate and epoxy resin, and finally add aluminum silicate ceramic fiber materials Mix well.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C., and a pressure of 19 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 21°C, the mass loss rate was 17%, and the continuous burning time was 12s.

Example 14

The external wall insulation material of this embodiment is composed of the following components by weight: 30 parts of polystyrene particles, 30 parts of expanded perlite, 20 parts of glass microspheres, 20 parts of glass fibers, 15 parts of red phosphorus, and 30 parts of urea-formaldehyde resin .

Its preparation method is as follows:

(1) According to the parts by weight of selected components, first mix polystyrene particles, expanded perlite and glass microspheres evenly, then add red phosphorus and urea-formaldehyde resin and mix, and finally add glass fiber materials to mix and swell.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, and double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 100° C. and a pressure of 10 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 19°C, the mass loss rate was 10%, and the continuous burning time was 9s.

Example 15

The external wall insulation material of the present embodiment is composed of the following components by weight: 25 parts of polystyrene particles, 37 parts of expanded perlite, 11 parts of glass microspheres, 8 parts of sepiolite fiber, 11 parts of aluminum hydroxide, phenolic 19 parts of resin.

Its preparation method is as follows:

(1) According to the weight of the selected components, first mix the polystyrene particles, expanded perlite, and glass beads evenly, then add aluminum hydroxide and phenolic resin to mix, and finally add the sepiolite fiber material and mix evenly Puffy.

(2) Put the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, at a temperature of 270° C., and a pressure of 22 MPa, and then dry and discharge.

The external wall insulation material prepared in this example was tested according to the GB8624-2006 standard, the temperature rise was 13°C, the mass loss rate was 12%, and the continuous burning time was 9s.

Example 16

A composite exterior wall thermal insulation material, the raw material of which comprises the following components and content by weight: polystyrene particles 20, expanded perlite 10, glass microspheres 5, aluminum silicate ceramic fiber 3, magnesium hydroxide flame retardant Agent 5, phenolic resin 10, the above-mentioned raw materials are pressed on the alkali-resistant glass grid cloth.

The preparation method of composite external wall insulation material comprises the following steps:

(1) According to the weight of each component, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add magnesium hydroxide flame retardant, phenolic resin, and finally add aluminum silicate ceramic fiber Mix and bulk;

(2) Add the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, pressurize at room temperature, control the pressure to 30MPa, dry and discharge.

Example 17

A composite external wall thermal insulation material, the raw material of the thermal insulation material includes the following components and content in parts by weight: 50 polystyrene particles, 40 expanded perlite, 25 glass beads, 30 crystalline alumina fibers, and 20 graphite flame retardants , urea-formaldehyde resin 40, the above raw materials are pressed on the alkali-resistant glass grid cloth.

The preparation method of composite external wall insulation material comprises the following steps:

(1) According to the weight of each component, first mix polystyrene particles, expanded perlite, and glass beads evenly, then add graphite flame retardant, urea-formaldehyde resin and mix, and finally add crystalline alumina fiber and mix evenly Puffy;

(2) Add the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, control the temperature at 300 ° C, and the pressure at 5 MPa, dry and discharge after treatment.

Claims (7)

1. A composite exterior wall thermal insulation material, characterized in that the raw materials of the thermal insulation material include the following components and parts by weight: 20-50 polystyrene particles, 10-40 expanded perlite, 5-25 glass beads, Inorganic fiber 3-30, flame retardant 5-20, thermosetting resin 10-40, the above-mentioned raw materials are pressed on the alkali-resistant glass grid cloth. 2. A kind of composite exterior wall insulation material according to claim 1, characterized in that, said inorganic fibers are glass fibers, aluminum silicate ceramic fibers, crystalline alumina fibers, mineral fibers or sepiolite fibers any of the 3. A composite exterior wall insulation material according to claim 1, characterized in that the flame retardant is any one of ammonium polyphosphate, aluminum hydroxide, magnesium hydroxide, graphite or red phosphorus. 4. A composite exterior wall insulation material according to claim 1, characterized in that the thermosetting resin is any one of epoxy resin, phenolic resin or urea-formaldehyde resin. 5. The preparation method of the composite exterior wall thermal insulation material as described in any one of claims 1-4, is characterized in that, comprises the following steps: (1) According to the parts by weight of each component, first mix polystyrene particles, expanded perlite, and glass microspheres evenly, then add flame retardant and heat-curing resin to mix, and finally add inorganic fibers to mix and swell; (2) Add the above-mentioned mixed and bulky mixture into a laminator, double-sidedly compound alkali-resistant glass mesh cloth, heat, pressurize, dry and discharge to obtain a composite exterior wall insulation material. 6 . The preparation method of a composite exterior wall thermal insulation material according to claim 5 , wherein the heating temperature in step (2) is from room temperature to 300° C. 7. The preparation method of a composite exterior wall thermal insulation material according to claim 5, characterized in that the pressure applied in step (2) is 5-30 MPa.