阅读说明：本技术 一种门窗用阻燃弹性木塑型材的制备方法 (Preparation method of flame-retardant elastic wood-plastic section for doors and windows ) 是由 窦建春 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种门窗用阻燃弹性木塑型材的制备方法,包括以下步骤：将芯料的各种原料混合；将混合后的物料进行造粒,得到芯料颗粒物；将耐火材料回收料和芯料颗粒物烘干,然后将芯料颗粒物一分为二,将耐火材料回收料和部分芯料颗粒物按比例称重,掺混均匀；将耐火材料回收料和芯料颗粒物在高速搅拌机中用偶联剂进行表面活化处理,加入胶粘剂,低速混合,出料,得到外层料；将外层料加热熔融得到熔融的外层料,并将外层料高压推挤进入共挤模具；将挤出机对芯层料粒子进行加热熔融,高压推挤进入共挤模具；共挤模具同时挤出芯层和外层,外层包裹在芯层表面,一起出口模,制成型材。本发明采用耐火材料回收料作为外层主要原料,阻燃效果好。(The invention discloses a preparation method of a flame-retardant elastic wood-plastic section for doors and windows, which comprises the following steps: mixing various raw materials of the core material; granulating the mixed materials to obtain core material particles; drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing; performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent, adding an adhesive, mixing at a low speed, and discharging to obtain an outer layer material; heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure; heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section. The invention adopts the recycled refractory material as the main raw material of the outer layer, and has good flame retardant effect.)

1. The preparation method of the flame-retardant elastic wood-plastic section for doors and windows is characterized by comprising the following steps of:

mixing core materials: putting various raw materials of the core material into a high-speed mixer for mixing at the temperature of 100-;

b, granulation: granulating the mixed materials by a special granulator to obtain core material particles;

c, drying and mixing materials: drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing;

d, surface treatment and glue mixing: performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent for 1-3min, adding an adhesive, mixing at a low speed for 3-5min, and discharging to obtain an outer layer material;

e, paving materials: heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure;

f, hot press forming: heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section.

2. The method for preparing a fire-retardant elastic wood-plastic profile for doors and windows according to claim 1, wherein the core material in the step A comprises the following components in percentage by weight:

TPE 15-25%

55-65% of wood powder

2.5 to 3.5 percent of lubricant

3 to 8 percent of toner

The balance being HDPE.

3. The method for preparing a fire-retardant elastic wood-plastic profile for doors and windows according to claim 1, wherein in the step C, the mass ratio of the refractory reclaimed material to the core material particles is 100: (150-250).

4. The method for preparing the flame-retardant elastic wood-plastic profile for doors and windows according to claim 1, wherein in the step D, the mass ratio of the coupling agent and the adhesive to the refractory reclaimed material is (8-15): 100 and (30-40): 100.

5. the method for preparing a fire-retardant elastic wood-plastic composite material for doors and windows according to claim 1, wherein in the step D, the coupling agent is selected from one or more of gamma-glycidoxypropyltrimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, N-octyltriethoxysilane, and gamma-aminopropyltriethoxysilane.

6. The method for preparing a fire-retardant elastic wood-plastic composite material for doors and windows according to claim 1, wherein in the step D, the content of alumina in the recycled refractory material is 30-45%, and the content of silicon carbide in the recycled refractory material is 5-12%.

Technical Field

The invention relates to the technical field of wood-plastic profiles, in particular to a preparation method of a flame-retardant elastic wood-plastic profile for doors and windows.

Background

The wood-plastic composite material is a novel composite material which is briskly developed in recent years at home and abroad, and is a novel material which is produced by mixing waste plant fibers such as wood flour, rice hulls, straws and the like with polyethylene, polypropylene, polyvinyl chloride and the like, and then carrying out plastic processing processes such as extrusion, mould pressing, injection molding and the like. The wood-plastic composite material has better elastic modulus and physical and mechanical properties such as compression resistance, bending resistance and the like which are equivalent to those of hardwood, the surface hardness is 2-5 times of that of common wood, and the durability is obviously superior to that of common wood materials. Therefore, the wood-plastic composite material is widely applied to the preparation of decorative materials such as sectional materials, decorative plates, floors and the like.

However, hydrocarbon compounds such as plastics and the like are easy to combust, so that the wood-plastic composite material is easy to combust, and in order to overcome the inflammability of the wood-plastic composite material, the method for endowing the surface flame retardance of the wood-plastic composite material with an effective mode is disclosed in CN 101486267A. The CN101486267A wood-plastic composite material prepared by a hot pressing method or by using a flame-retardant adhesive on the surface of the wood-plastic composite material has certain flame-retardant property, but the operation is more complicated.

In order to improve the safety of decoration, the invention provides a preparation method of an elastic wood-plastic section by adopting a refractory recycled material as a main raw material.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a preparation method of a flame-retardant elastic wood-plastic section for doors and windows.

The technical scheme of the invention is as follows:

a preparation method of a flame-retardant elastic wood-plastic section for doors and windows comprises the following steps:

mixing core materials: putting various raw materials of the core material into a high-speed mixer for mixing at the temperature of 100-;

b, granulation: granulating the mixed materials by a special granulator to obtain core material particles;

c, drying and mixing materials: drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing;

d, surface treatment and glue mixing: performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent for 1-3min, adding an adhesive, mixing at a low speed for 3-5min, and discharging to obtain an outer layer material;

e, paving materials: heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure;

f, hot press forming: heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section.

Preferably, the core material in the step a comprises the following components in percentage by weight:

TPE 15-25%

55-65% of wood powder

2.5 to 3.5 percent of lubricant

3 to 8 percent of toner

The balance being HDPE.

Preferably, in the step C, the mass ratio of the refractory reclaimed material to the core material particles is 100: (150-250).

Preferably, in the step D, the mass ratio of the addition amount of the coupling agent and the adhesive to the refractory recovered material is (8-15): 100 and (30-40): 100.

preferably, in the step D, the coupling agent is selected from one or more of gamma-glycidoxypropyltrimethoxysilane, gamma-glycidoxypropylmethyldiethoxysilane, N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, N-octyltriethoxysilane, and gamma-aminopropyltriethoxysilane.

Preferably, in the step D, the content of alumina in the recovered refractory material is 30 to 45%, and the content of silicon carbide in the recovered refractory material is 5 to 12%.

The invention has the advantages that: the invention provides a preparation method of a flame-retardant elastic wood-plastic section for doors and windows, which comprises the following steps: mixing various raw materials of the core material; granulating the mixed materials to obtain core material particles; drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing; performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent, adding an adhesive, mixing at a low speed, and discharging to obtain an outer layer material; heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure; heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section. The invention adopts the recycled refractory material as the main raw material of the outer layer, has good flame retardant effect and low cost.

Detailed Description

Example 1

A preparation method of a flame-retardant elastic wood-plastic section for doors and windows comprises the following steps:

mixing core materials: putting various raw materials of the core material into a high-speed mixer for mixing at 105 ℃ for 35min at the mixing speed of 550 rpm;

b, granulation: granulating the mixed materials by a special granulator to obtain core material particles;

c, drying and mixing materials: drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing;

d, surface treatment and glue mixing: performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent for 1.8min, adding an adhesive, mixing at a low speed for 3.5min, and discharging to obtain an outer layer material;

e, paving materials: heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure;

f, hot press forming: heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section.

The core material in the step A comprises the following components in percentage by weight:

TPE 18%

58% of wood powder

3.2 percent of lubricant

5.5 percent of toner

The balance being HDPE.

In the step C, the mass ratio of the refractory material reclaimed material to the core material particles is 100: 180.

in the step D, the mass ratio of the addition amount of the coupling agent and the adhesive to the refractory recovered material is 12: 100 and 32: 100.

in the step D, the coupling agent is gamma-glycidoxypropyltrimethoxysilane.

In the step D, the content of alumina in the recovered refractory material is 38%, and the content of silicon carbide in the recovered refractory material is 10%.

Example 2

A preparation method of a flame-retardant elastic wood-plastic section for doors and windows comprises the following steps:

mixing core materials: putting various raw materials of the core material into a high-speed mixer for mixing at the temperature of 120 ℃ for 30min at the mixing speed of 600 rpm;

b, granulation: granulating the mixed materials by a special granulator to obtain core material particles;

c, drying and mixing materials: drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing;

d, surface treatment and glue mixing: performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent for 1min, adding an adhesive, mixing at a low speed for 5min, and discharging to obtain an outer layer material;

e, paving materials: heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure;

f, hot press forming: heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section.

The core material in the step A comprises the following components in percentage by weight:

TPE 15%

65% of wood powder

2.5 percent of lubricant

8 percent of toner

The balance being HDPE.

In the step C, the mass ratio of the refractory material reclaimed material to the core material particles is 100: 150.

in the step D, the mass ratio of the addition amount of the coupling agent and the adhesive to the refractory recovered material is 15: 100 and 30: 100.

in the step D, the coupling agent is selected from gamma-glycidoxypropylmethyldiethoxysilane.

In the step D, the content of the alumina in the refractory recovered material is 30%, and the content of the silicon carbide in the refractory recovered material is 12%.

Example 3

A preparation method of a flame-retardant elastic wood-plastic section for doors and windows comprises the following steps:

mixing core materials: putting various raw materials of the core material into a high-speed mixer for mixing at the temperature of 100 ℃ for 45min at the mixing speed of 500 rpm;

b, granulation: granulating the mixed materials by a special granulator to obtain core material particles;

c, drying and mixing materials: drying the refractory material reclaimed materials and the core material particles, dividing the core material particles into two parts, weighing the refractory material reclaimed materials and part of the core material particles according to the proportion, and uniformly mixing;

d, surface treatment and glue mixing: performing surface activation treatment on the reclaimed refractory material and the core material particles in a high-speed stirrer by using a coupling agent for 3min, adding an adhesive, mixing at a low speed for 3min, and discharging to obtain an outer layer material;

e, paving materials: heating and melting the outer layer material to obtain a molten outer layer material, and extruding the outer layer material into a co-extrusion die at high pressure;

f, hot press forming: heating and melting core layer material particles by an extruder, and extruding the core layer material particles into a co-extrusion die at high pressure; and extruding the core layer and the outer layer simultaneously by the co-extrusion die, wherein the outer layer is wrapped on the surface of the core layer and is extruded out of the die to form the section.

The core material in the step A comprises the following components in percentage by weight:

TPE 25%

55% of wood powder

3.5 percent of lubricant

3 percent of toner

The balance being HDPE.

In the step C, the mass ratio of the refractory material reclaimed material to the core material particles is 100: 250.

in the step D, the mass ratio of the addition amount of the coupling agent and the adhesive to the refractory recovered material is 8: 100 and 40: 100.

in the step D, the coupling agent is selected from N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, N-octyltriethoxysilane and gamma-aminopropyltriethoxysilane at a mass ratio of 2: 1: 1 in combination.

In the step D, the content of the alumina in the refractory recovered material is 30%, and the content of the silicon carbide in the refractory recovered material is 12%.

Test example

The flame retardant rating of the wood-plastic profiles prepared in examples 1-3 was determined according to the test method of EN13501 and all the results were A1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.