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Micro-foaming wood plastic composite material plate for building template and preparation method thereof

A technology for wood-plastic composite materials and building templates, which is applied in the fields of foamed wood-plastic composite materials and their processing, micro-foamed wood-plastic composite materials and processing technology, and can solve problems such as easy merging of holes, difficulty in plates, and low surface hardness. , to achieve the effect of reducing and foaming, good lubricating effect and improving internal quality

Inactive Publication Date: 2011-08-31
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned technical problems such as difficulty in forming wider boards, easy merging of holes, and low surface hardness, the present invention provides a board of micro-foamed wood-plastic composite material for building formwork and a preparation method thereof. The prepared board is wider, slightly Uniform distribution of pores and high surface hardness

Method used

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  • Micro-foaming wood plastic composite material plate for building template and preparation method thereof
  • Micro-foaming wood plastic composite material plate for building template and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) 40.0 parts by mass of polyvinyl chloride (PVC S-700);

[0070] (2) 20.0 parts by mass of wood flour with a particle size of 100-200 mesh;

[0071] (3) 11.5 parts by mass of light active calcium carbonate (1000-1500 mesh);

[0072] (4) Foaming agent (azodicarbonamide) 1.2 parts by mass;

[0073] (5) Foaming stabilizer (dibutyltin) 0.6 parts by mass;

[0074] (6) 1.5 parts by mass of polyethylene wax;

[0075] (7) Titanate coupling agent (NDZ311) 1.0 parts by mass;

[0076] (8) 10.0 parts by mass of chlorinated polyethylene;

[0077] (9) 6.0 parts by mass of adsorbent;

[0078] The adsorbent is nano calcium oxide with a particle size of 100~500nm, and the purity is >98%wt;

[0079] (10) 1.0 parts by mass of foaming aid;

[0080] Zinc oxide with a particle size of 30~60nm;

[0081] (11) Silicone processing aid (LYSI-100) 0.7 parts by mass;

[0082] (12) E-glass fiber (diameter 12um, length 5mm) 6.5 parts by mass;

[0083] 2. Process

[0084] First mix the wo...

Embodiment 2

[0102] (1) 50.0 parts by mass of polyvinyl chloride (PVC S-700);

[0103] (2) 15.0 parts by mass of wood flour with a particle size of 100-200 mesh;

[0104] (3) 10.0 parts by mass of light active calcium carbonate (1000-1500 mesh);

[0105] (4) Foaming agent (azodicarbonamide) 0.4 parts by mass;

[0106] (5) Foam stabilizer (dibutyltin) 3.5 parts by mass;

[0107] (6) 0.5 parts by mass of polyethylene wax;

[0108] (7) Titanate coupling agent (NDZ311) 1.1 parts by mass;

[0109] (8) 4.0 parts by mass of chlorinated polyethylene;

[0110] (9) Adsorbent (nano-calcium oxide with particle size of 100-500nm, purity>98%wt;) 8.0 parts by mass;

[0111] (10) Foaming aid (zinc oxide with a particle size of 30-60nm) 2.0 parts by mass;

[0112] (11) Silicone processing aid (LYSI-100) 1.5 parts by mass;

[0113] (12) E-glass fiber (diameter 10um, length 6mm) 4.0 parts by mass

[0114] 2. Process

[0115] First mix the wood flour and nano-calcium oxide powder at a high speed of 1...

Embodiment 3

[0133] (1) 41.0 parts by mass of polyvinyl chloride (PVC S-700);

[0134] (2) 25.0 parts by mass of wood flour with a particle size of 100-200 mesh;

[0135] (3) 11.5 parts by mass of light active calcium carbonate (1000-1500 mesh);

[0136] (4) Foaming agent (azodicarbonamide) 0.2 parts by mass;

[0137](5) Foam stabilizer (dibutyltin) 0.8 parts by mass;

[0138] (6) 2.5 parts by mass of polyethylene wax;

[0139] (7) Titanate coupling agent (NDZ311) 2.0 parts by mass;

[0140] (8) 5.0 parts by mass of chlorinated polyethylene;

[0141] (9) Nano-adsorbent (nano-calcium oxide with particle size of 100-500nm, purity>98%wt;) 5.0 parts by mass;

[0142] (10) 3.5 parts by mass of nano-foaming aid (zinc oxide with a particle size of 30-60nm);

[0143] (11) Silicone processing aid (GM100) 0.5 parts by mass;

[0144] (12) E-glass fiber (diameter 14um, length 3mm) 3.0 parts by mass.

[0145] 2. Process

[0146] First mix the wood flour and nano-calcium oxide powder at a high ...

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Abstract

The invention discloses a micro-foaming wood plastic composite material plate for a building template and a preparation method thereof. The wood plastic composite material consists of polrvinyl chloride, wood powder, lightweight active calcium carbonate, a foaming agent, a foaming stabilizer, polyethylene wax, a titanate coupling agent, chlorinated polyethylene, an adsorbent nano calcium oxide, an auxiliary foaming agent nano zinc oxide, a silicone processing adjuvant and reinforced fiber alkali-free glass fiber. The preparation method comprises the following steps of: mixing the wood powder and the nano calcium oxide powder at a high speed; adding the titanate coupling agent and then mixing at the high speed; adding the rest materials; mixing at the high speed and then mixing at a low speed to obtain a premix; extruding the premixing by using an extruder; and cooling very quickly to obtain the product. The micro-foaming wood plastic composite material plate has the characteristics ofhigh surface hardness, high flowability, high strength, high toughness, high dimensional stability, long service life and the like.

Description

technical field [0001] The invention relates to the field of foamed wood-plastic composite material and its processing, in particular to the field of micro-foamed wood-plastic composite material and its processing technology. Background technique [0002] The existing micro-foamed wood-plastic composite materials for building templates have the disadvantages of low surface hardness, poor toughness, low strength, poor fluidity, low wood powder content, easy cracking and deformation, poor dimensional stability, and short service life. In actual construction, especially building formwork with a width exceeding 90cm cannot be produced. The preparation of micro-foamed wood-plastic composites has the following key technical problems: [0003] 1. The formula for producing micro-foamed wood-plastic composite materials contains a large amount of solid powder, and the physical properties of various powders are very different, especially those with different chemical polarities betwee...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08L23/28C08L83/04C08K13/04C08K3/26C08K5/57C08K3/22C08K7/14C08J9/10B29C47/92B29C48/92
CPCB29C48/0022B29C48/04B29C48/40B29C48/875B29C48/911B29C48/92B29C2948/9258B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895B29C2948/92933
Inventor 崔益华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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