Section material product of continuous glass-fiber reinforced hard polyurethane microfoam and coextrusion forming process

A technology of rigid polyurethane and glass fiber yarn, which is applied in the field of glass fiber reinforced thermosetting composite materials, can solve the problems of low strength and inability to apply load-bearing structural parts, etc., and achieve the effects of long service life, excellent mechanical properties, and improved cost performance

Active Publication Date: 2009-05-06
江苏双良复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its strength is still low and cannot be applied to some load-bearing structural parts

Method used

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  • Section material product of continuous glass-fiber reinforced hard polyurethane microfoam and coextrusion forming process
  • Section material product of continuous glass-fiber reinforced hard polyurethane microfoam and coextrusion forming process

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0038] see figure 1 : synthetic sleeper

[0039] (1) Preparation of matrix material

[0040] The isocyanate is modified by adding 2.2% phosphorus and loaded into the storage tank.

[0041] Preparation of combined polyether: 100 parts of polyether

[0042] 0.3 parts of triethanolamine

[0043] Butyl stannous octoate 1.0 parts

[0044] Silicone oil 2 parts

[0045] Foaming spirit 2.5 parts

[0046] Anti-aging agent 0.2 parts

[0047] After accurately measuring according to the above formula, mix in the reactor for 1 hour, and then discharge and pack into cans.

[0048]The weight ratio of modified isocyanate to combined polyether is 1.05:1, which is set by the automatic metering system of the high-pressure foaming machine.

[0049] (2) Reinforcing material: non-alkali non-twisted continuous glass fiber roving surface-treated with anilinomethyltrimethoxysilane coupling agent. The rat...

Embodiment 2

[0060] Example 2: Container Siding

[0061] (1) Preparation of matrix materials

[0062] The formula for combining polyether: 100 parts of polyether

[0063] Triethylenediamine 0.8 part

[0064] Stannous octoate 1.0 parts

[0065] Silicone oil 2 parts

[0066] Foaming spirit 4.7 parts

[0067] Anti-aging agent 0.1 parts

[0068] Preparation and other reference examples 1

[0069] (2) Reinforcing material: refer to Example 1

[0070] (3) Product process: Referring to Example 1, the cross-sectional size is 1000×16.

[0071] (4) Main physical properties: product density 0.58g / cm 3 , glass fiber content 49%, bending strength 81Mpa, bending modulus 7930Mpa, impact strength 60KJ / m 2 .

[0072] The board has excellent mechanical properties, water and corrosion resistance, and dimensional stability. It is a lightweight structural composite material board that replaces steel with plastic and wood ...

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Abstract

A composite section material product of continuous glass-fiber gauze reinforced hard polyurethane micro-foam and its co-extrusion formation process are disclosed. The process is carried out by collocating for modified isocyanate and combined polyether, carding while dispersing for continuous glass-fiber gauze, passing it through co-injection cavity, heat foaming curing area and cooling sizing area continuously, wetting glass-fiber gauze by bi-component polyurethane stoste and cutting. It has long usage life, excellent mechanical, anti-corrosive and insulating performances. It can be used for railway sleeper rail, container wall board, architecture section materials and sport appliances.

Description

technical field [0001] The invention relates to a glass fiber reinforced thermosetting composite material. In particular, it relates to a profile product of continuous glass fiber yarn reinforced rigid polyurethane microfoam and a co-extrusion molding process thereof. Background technique [0002] Polyurethane foam is one of the main varieties of polyurethane synthetic materials. It is mainly prepared by the reaction of organic isocyanate and polyol compound. According to the different raw materials used and the change of formula, it can be made into soft, semi-rigid and rigid foams and other varieties. In terms of rigid foam plastics: the ones with lower density are mainly used for insulation materials, such as refrigerators, water heaters and pipelines; high-density polyurethane rigid foam plastics are also known as rigid polyurethane microfoams, which can be sawed and planed with natural wood. It can be nailed and other properties, and can be used to make wood-like han...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08J5/08B29C70/20
Inventor 方澄张振新张广平孙中奇汤鸣雷王艳波李红伟
Owner 江苏双良复合材料有限公司
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