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High-elongation low-temperature-resistant special material for PP building formwork and preparation method of special material

A high elongation, building formwork technology, applied in the field of building formwork materials, can solve the problems of difficulty in preparing PP materials, low PP melt flow rate, low elongation, etc., achieving light weight and high recycling times , easy to shape effect

Inactive Publication Date: 2019-04-12
GUANGDONG TIANBAO NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Preparation of building formwork by extrusion can be cut according to the size of use, reducing mold opening and saving costs, but the melt flow rate of extrusion-grade PP is low, the viscosity is high, and the elongation is low. Therefore, the general process and materials are very difficult. Difficult to prepare extrusion-grade PP materials

Method used

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  • High-elongation low-temperature-resistant special material for PP building formwork and preparation method of special material
  • High-elongation low-temperature-resistant special material for PP building formwork and preparation method of special material
  • High-elongation low-temperature-resistant special material for PP building formwork and preparation method of special material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-elongation, low-temperature-resistant PP building formwork special material, comprising the following components in parts by weight:

[0033]

[0034] The PP regenerated material is composed of 25 parts by weight of PP battery shell regenerated material and 13 parts by weight of PP Wantong board regenerated material;

[0035] The particle size of the talc powder is 1250 mesh; the melt flow rate of the PPR recycled material is 1-2g / 10min, the elongation is ≧150%, and the EPDM is selected from Dow 4820P;

[0036]The graft rate of described PP graft is 0.8%, is prepared by the following method: earlier maleic anhydride (MAH) and dicumyl peroxide (DCP) are diluted together in acetone, and then with Maoming Petrochemical's Polypropylene K8003 (PP K8003) is mixed, wherein the mass ratio of polypropylene K8003 (PP K8003), maleic anhydride (MAH), dicumyl peroxide (DCP) is 92:2:0.5, and the extruder is heated up to After starting up normally at 190-210°C, lower the te...

Embodiment 2

[0041] A high-elongation, low-temperature-resistant PP building formwork special material, comprising the following components in parts by weight:

[0042]

[0043] The PP regenerated material is composed of 30 parts by weight of PP battery shell regenerated material and 10 parts by weight of PP Wantong board regenerated material;

[0044] The particle size of the talc powder is 1250 mesh; the melt flow rate of the PPR recycled material is 1-2g / 10min, the elongation is ≧150%, and the EPDM is selected from Dow 4820P;

[0045] The graft rate of described PP graft is 0.8%, is prepared by the following method: earlier maleic anhydride (MAH) and dicumyl peroxide (DCP) are diluted together in acetone, and then with Maoming Petrochemical's Polypropylene K8003 (PP K8003) is mixed, wherein the mass ratio of polypropylene K8003 (PP K8003), maleic anhydride (MAH), dicumyl peroxide (DCP) is 92:2.5:0.6, and the extruder is heated up to After starting up normally at 190-210°C, lower the...

Embodiment 3

[0048] A high-elongation, low-temperature-resistant PP building formwork special material, comprising the following components in parts by weight:

[0049]

[0050] The PP regenerated material is composed of 30 parts by weight of PP battery shell regenerated material and 18 parts by weight of PP Wantong board regenerated material;

[0051] The particle size of the talc powder is 1250 mesh; the melt flow rate of the PPR recycled material is 1-2g / 10min, the elongation is ≧150%, and the EPDM is selected from Dow 4820P;

[0052] The graft rate of described PP graft is 0.8%, is prepared by the following method: earlier maleic anhydride (MAH) and dicumyl peroxide (DCP) are diluted together in acetone, and then with Maoming Petrochemical's Polypropylene K8003 (PP K8003) is mixed, wherein the mass ratio of polypropylene K8003 (PP K8003), maleic anhydride (MAH), dicumyl peroxide (DCP) is 98:3.5:0.8, and the extruder is heated up to After starting up normally at 190-210°C, lower the...

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Abstract

The invention discloses a high-elongation low-temperature-resistant special material for a PP building formwork. The special material comprises the following components, in parts by weight: 35-60 parts of a PP regenerated material, 10-20 parts of a PPR regenerated material, 5-10 parts of EPDM, 20-30 parts of talc powder, 3-5 parts of a PP graft, 0.5-1 part of a coupling agent and 0.5-2 parts of apigment. The special material for the PP building formwork provided by the invention has excellent low-temperature impact resistance and can be used at minus 20 DEG C, the flexural modulus is >= 1500MPa, the elongation is >= 350%, the melt flow velocity is 3-4 g / 10min, and the special material is suitable for direct extrusion preparation of the PP building formwork; the prepared PP building formwork is easy to form, can be coated with different colors by using different color powder and be recycled, has high recycling frequency, a light mass of a product and convenient construction, and guarantees safety in the construction process; and the special material is prepared by using the recycled PP material, so that the production costs are greatly reduced, and the purpose of turning waste into treasure is achieved.

Description

technical field [0001] The invention belongs to the technical field of building formwork materials, and in particular relates to extrusion-grade high-rigidity, high-elongation and low-temperature-resistant PP building formwork special materials, and a preparation method of the PP building formwork special materials. Background technique [0002] Building formwork is a material used to temporarily support building structures. It is made according to the design requirements, so that the concrete structure and components of the supported building are formed according to the specified position and geometric size, maintain their correct positions, and bear the weight of the building formwork. and external loads acting on it. With the rapid development of the construction industry in recent years, the demand for building formwork in the construction industry is increasing, and new requirements are also put forward for the quality of building formwork. At present, the main materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08L23/16C08L51/06C08K9/06C08K3/34
CPCC08L23/12C08L2205/025C08L2205/035C08L2207/20C08L23/14C08L23/16C08L51/06C08K9/06C08K3/34
Inventor 李湘张玉鹏刘振春郑文涛区辉彬吴家琅
Owner GUANGDONG TIANBAO NEW MATERIALS CO LTD
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