A kind of phenol-formaldehyde resin modified thermal insulation materialTechnical field
The invention belongs to environmental-friendly construction material technical field more particularly to a kind of high quality thermal insulation materials.
Background technology
In recent years due to the emphasis to building energy conservation and exterior-wall heat insulation, more and more new building insulation materials are developedBe applied to novel building.Phenolic resin thermal insulation material is a kind of organic polymer hard aluminium foil naval stores, is by heatPhenolic resin material made of the Foaming of phenolic resin of solid, since it is with high rate of closed hole and good heat-proof quality and heat conductionThe characteristics such as coefficient is low, and with good characteristics such as water vapour permeability and water-resistance, while there is light weight, fire protecting performanceIt is high, meet open fire it is non-ignitable, without dripping off, nontoxic smokeless feature, it is not brittle under the low temperature environment of (- 196~200 DEG C), do not shrink and beThe first choice of ideal heat preservation section material.
But the brittleness of phenolic resin thermal insulation material is big, when in use exist fall off, intensity it is not up to standard, thermal coefficient does not reachThe problems such as mark, intrinsic excellent fire protecting performance could not be utilized very well, therefore, influence the extension of the products application technology.
Invention content
In order to solve the above technical problems, the present invention provides a kind of phenolic resin of modification.The technical side that the present invention usesCase is：
A kind of phenol-formaldehyde resin modified thermal insulation material, which is characterized in that formed including following raw material：
Modified oyster shell whiting 10-15, phenol 60-80, formaldehyde 40-70, glutaraldehyde 10-15, be chopped 10-15 parts of polyester fiber.As needed, composition ratio can be adjusted to 100.
The modified oyster shell whiting is prepared as：A certain amount of nanometer of oyster shell whiting is added in lye, is heated to reflux after dispersion,Washing is filtered to neutrality, drying, spare；Titanate esters are added in acetone, after dispersion, the oyster shell whiting after alkali process is added, surpassesIt is heated to reflux after sound, washing and drying.
Raw material further includes 1-5 parts of silane coupling agent, 1-5 parts of foaming agent pentane, curing agent A B quinolines 6-8Part, 4-7 parts of surfactant.
The surfactant is silicone oil and TWEEN80 is 1:1 mixture.
Oyster shell whiting dispersion stability is poor before modified, is easy to happen reunion, and the grain size of nanometer oyster shell whiting is made to increase；Using changingAfter property agent, the stability of oyster shell whiting dispersion effectively improves, and is not susceptible to reunite.When handling oyster shell whiting surface, metatitanic acidEster coupling agent is successfully coupled at oyster shell whiting surface；Nanometer oyster shell whiting surface property is effectively improved.With modified Nano shellThe intensity of the increase of powder dosage, phenolic resin increases.
Advantageous effect
The present invention is by optimizing phenolic resin thermal insulation material raw material proportioning, especially modified oyster shell whiting and phenolic resin starting materialLigand, by adding inorganic strengthening agent, the particle using modified oyster shell whiting is tiny, and compatibility is preferable, is easily dispersed, and deposits simultaneouslyIn interior porosity height, heat insulation effect is improved, is prepared for intensity, the heat insulation effect of the phenolic resin of high quality, Compound Degree is high,Help to improve the comprehensive performance of insulating layer.
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment belowContent disclosed by book understands other advantages and effect of the present invention easily.
Embodiment 1
The preparation of modified Nano oyster shell whiting：Using 10% NaOH aqueous solutions, a certain amount of nanometer of oyster shell whiting is added, and surpassSound disperses 1h, and stirring 2-4h is heated to reflux at 80 DEG C, and washing, filtering to pH value are neutrality, and 90 DEG C of drying are spare；In acetoneIt is added quantitative titanate coupling agent in solvent, ultrasonic disperse 30min is added by a certain percentage through alkali cleaning treated oyster shell whiting,Re-ultrasonic dispersion 30min is heated to reflux stirring, washs, and filters, and modified Nano oyster shell whiting is made in 90 DEG C of drying.
Modified oyster shell whiting 10, phenol 60, formaldehyde 40, sodium hydroxide 10, glutaraldehyde 10, be chopped 10 parts of polyester fiber, silane1 part of coupling agent, 1 part of foaming agent pentane, 6 parts of curing agent A B quinolines, 4 parts of surfactant.
After polymerisation is completed in raw material mixing, the chopped polyester fiber of hydride modified dose of processing is added；It is uniformly mixed；Table is addedFace activating agent, foaming agent, curing agent are stirred；Cure cooling after reverse mould in baking oven.
Using shock machine complete shock-testing, 5 minutes.Comparative example 1 and the sample that modified oyster shell whiting is not added, hairExisting, 1 phenolic resin plate of the embodiment of the present invention is not scaling-off, does not also deform, and scaling-off and metaboly has occurred in comparative example.Through punchingIt hits realization and shows that the modified oyster shell whiting of addition improves the intensity of phenolic resin thermal insulation material, meet environment protection architecture requirement.
Above-mentioned specific implementation mode, technical concept and structure feature only to illustrate the invention, it is therefore intended that allow and be familiar with thisThe stakeholder of item technology can implement according to this, but the above content is not intended to limit protection scope of the present invention, every according to this hairAny equivalent change or modification made by bright Spirit Essence, should all fall under the scope of the present invention.