CN102303962A - Microlite fireproof section - Google Patents

Abstract

The invention provides a microcrystalline stone fireproof profile, the main components of which are heavy calcium carbonate powder and PVC resin, together with other chemical additives including one of alumina, hard lead, CPE, dibutyl fat and composite stabilizer or more. The weight ratio of the microcrystalline stone fireproof profile is: 50-70 parts of heavy calcium carbonate, 20-40 parts of PVC resin, and 5-25 parts of other chemical additives. The microcrystalline stone fireproof section material of the present invention does not contain radioactive harmful substances, and has good fireproof performance, which protects national property and people's life and property safety, and fills the blank for national fire protection and fireproof section materials.

Description

Microcrystalline stone fireproof profile

technical field

The invention relates to a fireproof profile for building and decoration, in particular to a microcrystalline fireproof profile.

Background technique

Among the current fire-resistant material components, the most important flame-retardant component is antimony trioxide, but it is radioactive, which is extremely harmful to the human body and is not conducive to environmental protection. Moreover, most fireproof profiles also have the disadvantages of fast aging, deformation, and poor fireproof performance.

Microcrystalline stone, that is, glass ceramics, also known as jade crystal stone, crystal stone, and microcrystalline plate, is called microcrystalline ceramics in the United States, and crystallized glass in Japan. A composite solid material containing a large number of microcrystals and glass bodies obtained by controlled crystallization in a medium. Compared with other natural stones, glass-ceramics has become the preferred choice among many building decoration materials because of its compact structure, high strength, frost resistance, non-absorbent, corrosion resistance, clear texture, bright color, small color difference and not easy to fade. One of the new materials.

Microlite is to select several main components in granite and precipitate a special crystal phase from a glass liquid with a special composition under high temperature. Therefore, it has high hardness and strength, and it has undergone secondary high-temperature melting and shaping during the molding process. Therefore, there is no texture formed by natural stone, so microcrystalline stone is not easy to break, not absorb water, and is not afraid of erosion and pollution. The degree is also high. There will be no chromatic aberration, pan-alkaline, spit juice and other phenomena after decoration, and no maintenance is required.

At present, there is no microcrystalline stone made into fireproof profiles in the market. Generally, it is only placed on the overall cabinet and stove top, and the existing microcrystalline stone profiles do not have the flame-retardant and fire-resistant effects required by the state.

Contents of the invention

In order to solve the above technical problems, the object of the present invention is to provide a microcrystalline stone fireproof profile, which does not contain radioactive harmful substances and has good fireproof performance in line with national standards.

To achieve said purpose, the present invention adopts following technical scheme:

The invention provides a microcrystalline stone fireproof profile, the main components of which are heavy calcium carbonate powder and PVC resin, and other chemical additives include one or more of aluminum oxide, hard lead, CPE, dibutyl fat and composite stabilizers. Various.

The weight ratio of the microcrystalline stone fireproof profile is: 50-70 parts of heavy calcium carbonate, 20-40 parts of PVC resin, and 5-25 parts of other chemical additives.

Preferably, 60 parts of the ground calcium carbonate, 25 parts of PVC resin, and 15 parts of other chemical auxiliary agents.

The other chemical additives include 1-5 parts of hard lead, 1-5 parts of CPE, 1-5 parts of dibutyl fat, 1-5 parts of aluminum oxide and 1-5 parts of composite stabilizer.

Preferably, the other chemical additives include 4 parts of hard lead, 4 parts of CPE, 4 parts of dibutyl fat, 2 parts of aluminum oxide and 1 part of composite stabilizer.

Hard lead: Also known as lead stearate, it is used as the main heat stabilizer and stabilizes the working temperature of the carrier.

CPE (Chlorinated Polyethylene): as a reinforcing agent to increase the strength of the carrier.

Dibutyl fat: also known as dibutyl DBP, used as a plasticizer to enhance the finish.

Alumina: replace antimony trioxide used in the prior art.

Composite stabilizer: Composite stabilizers commonly used in the field can be selected. For example, the composite stabilizer used in the preferred embodiment of the present invention is purchased from Hebei Hengshui Sanyou Rubber and Plastic Products Factory, model: FWR, implementation standard: KIHSY01-2007.

The production process of the microcrystalline stone fireproof profile is: pulverization, mixing, heating, granulation, and molding. Specifically, the main raw materials are mixed with other chemical additives, and the products are obtained through extrusion molding after high-temperature and high-pressure sintering.

The microcrystalline stone fireproof profile of the invention can be widely used in fireproof door frames, fireproof window frames, and firewall partitions.

The microcrystalline stone fireproof section material of the present invention has good fireproof performance, plays a role in protecting national property and people's life and property safety, and fills the blank for national fire protection and fireproof section material.

Detailed ways

The present invention will be further described below in conjunction with the examples. It should be understood that these examples are only for the purpose of illustration, and in no way limit the protection scope of the present invention.

Example 1

Raw materials: heavy calcium carbonate 60kg, PVC resin 25kg, hard lead 4kg, CPE 4kg, dibutyl fat 4kg, alumina 2kg and composite stabilizer 1kg.

The production process is: Weigh out various raw materials according to weight, crush them and mix them. When the natural stirring temperature exceeds 120°C, release the powder and pour it into the hopper of the feeder, and then run the semi-finished product through the feeder. Granules; then the semi-finished granules are added to the hopper of the molding machine, mixed and extruded by the molding machine, and packed into the warehouse after inspection.

Example 2

Raw materials: heavy calcium carbonate 50kg, PVC resin 20kg, hard lead 1kg, CPE 1kg, dibutyl fat 1kg, alumina 1kg and composite stabilizer 1kg.

The manufacturing process is the same as in Example 1.

Example 3

Raw materials: heavy calcium carbonate 70kg, PVC resin 40kg, hard lead 5kg, CPE 5kg, dibutyl fat 5kg, alumina 5kg and composite stabilizer 5kg.

The manufacturing process is the same as in Example 1.

Experimental example

The profile products for fire doors made in Example 1 are adjusted in an environment of (23±2°C) to test the appearance and size of the samples, and the adjustment time is not less than 1h, and the adjustment time for other testing items is not less than Less than 24h, and test under this condition.

1. Safety and health performance

This product is non-toxic and harmless to the human body, meeting the requirements of GB/T 20285-2006 for ocular toxicity hazard classification ZA2.

2. Combustion performance

This product meets the requirements of GB/T 8624-2006 for combustion performance A1 level.

3. Appearance and color

Take three 1m-long profiles as samples, and visually inspect them under natural light. The surface of the profile is smooth and clean, the color is uniform, and there are no defects such as bumps, scars, deformations, and impurities that affect the use.

4. Mechanical properties of profiles

4.1 The quality of profiles

Take one sample with a length of 200mm-300mm from each of the three profiles;

Weigh with a balance with an accuracy of not less than 1g, measure the length of the profile with a measuring tool with an accuracy of at least 0.5mm, and take the average of three samples.

4.2 Charpy impact strength

Test according to the provisions of ISO 179:2000, the test span L=(62)mm, the sample is 1eA, the number of samples is five, and the average value is taken. Sample size: 1=(80±2)mm; b=(10.0±0.2)mm; h: visible wall thickness of profile, unit is (mm); r=(0.25±0.05)mm; bN=(8.0±0.2)mm 0.2) mm.

4.3 Flexural modulus of elasticity test

Test according to the provisions of GB/T 9341-2008.

4.4 Dimensional change rate after heating

According to the provisions of GB/T 8814-2004

4.5 Drop hammer impact test

The test environment temperature is room temperature, the mass of the falling weight is (500±2)g, and the height of the falling weight is 1000mm. Other methods shall be carried out according to GB/T 8814-2000.

4.6 Determination of ball pressure hardness

Test according to the provisions of GB/T 3398.1-2008, the test load is 490N, and the load time is 60s.

4.7 Determination of screw holding force

It is advisable that the size of the test site and the division can meet the requirements of the test, and the test method should be carried out according to the provisions of 4.10 in GB/T 17657-1999.

The test results of various mechanical properties of the microcrystalline stone fireproof profile of the present invention are as follows, all of which meet various standards.

5. Fire inspection

The microcrystalline stone fireproof profile of the present invention reaches the national standard 8624-1997A1 level standard. And it has passed the inspection of Hubei Fire Products Quality Supervision and Inspection Station NO: 2009JZ0360-1.

Claims (7)

1. A microcrystalline stone fireproof profile, its main component is heavy calcium carbonate powder and a small amount of PVC resin, is equipped with other chemical auxiliary agents; Wherein, described other chemical auxiliary agents include hard lead, CPE, dibutyl fat, oxidized One or more of aluminum and composite stabilizers. 2. The microcrystalline stone fireproof profile according to claim 1, whose weight ratio is: 50-70 parts of ground calcium carbonate, 20-40 parts of PVC resin, and 5-25 parts of other chemical additives. 3. The microcrystalline stone fireproof profile according to claim 2, its weight ratio is: 60 parts of the ground calcium carbonate, 25 parts of PVC resin, and 15 parts of other chemical additives. 4. The microcrystalline stone fireproof profile according to claim 1, said other chemical additives include 1-5 parts of hard lead, 1-5 parts of CPE, 1-5 parts of dibutyl fat, 1-5 parts of aluminum oxide and compound Stabilizer 1-5 parts. 5. The microcrystalline stone fireproof profile according to claim 4, said other chemical additives include 4 parts of hard lead, 4 parts of CPE, 4 parts of dibutyl fat, 2 parts of alumina and 1 part of composite stabilizer. 6. A method for making the microcrystalline stone fireproof profile according to claim 1, the technological process of which is: pulverizing, mixing, heating, granulating, and molding. 7. The preparation method of the microcrystalline stone fireproof profile according to claim 6 is to weigh various raw materials by weight, mix and mix the materials after crushing, and when the natural stirring temperature is over 120°C, discharge the material powder Pour it into the hopper of the material making machine, and the semi-finished granules are produced through the operation of the material making machine; then the semi-finished granules are added to the hopper of the molding machine, mixed and extruded by the molding machine, and packed into the warehouse after inspection.