阅读说明：本技术 一种高阻燃性能集成吊顶用片状模塑料的制备方法 (A kind of preparation method of high flame resistance Integral ceiling sheet molding compound ) 是由 鲁平才 张伟 于 2018-05-21 设计创作，主要内容包括：本发明公开了一种高阻燃性能集成吊顶用片状模塑料的制备方法,采用表面改性处理超细氢氧化铝作主要无机阻燃填充材料,并辅以合适配比的酚醛环氧乙烯基不饱和树脂、低轮廓剂、固化剂、聚合有机羧酸改性脱模剂、活性氧化镁及玻璃纤维共同制备成片状模塑料,不仅提升了材料的机械强度,还提高了材料的阻燃性能、耐酸碱、硬度等电性能和化学性能,成品具有更高的强度以及高阻燃性,广泛应用于集成吊顶扣板和其他领域,解决了很大的技术难题,经济价值与社会价值并存。(The invention discloses a kind of preparation methods of high flame resistance Integral ceiling sheet molding compound, main inorganic fire-retarded packing material is made using surface modification treatment ultrafine aluminium hydroxide, and it is aided with properly mixed epoxy novolac vinyl unsaturated-resin, low profile agent, curing agent, it polymerize the modified release agent of organic carboxyl acid, activated magnesia and glass fibre are prepared into sheet molding compound jointly, not only improve the mechanical strength of material, also improve the flame retardant property of material, acid and alkali-resistance, the electrical properties such as hardness and chemical property, finished product has higher intensity and high flame retardant, it is widely used in integrated suspended ceiling pinch plate and other field, solves very big technical problem, economic value and social value are simultaneously deposited.)

1. a kind of preparation method of high flame resistance Integral ceiling sheet molding compound, it is characterised in that include the following steps:

(1) prepare to prepare raw material as follows by weight first: inorganic fire-retarded mineral material 250-350 parts, unsaturated-resin 60-70 Part, 30-40 parts of low profile agent, 1-2 parts of curing agent, 3-5 parts of release agent, 1-1.5 parts of activated magnesia, glass fibre 80-100 Part.

(2) preparation of resin paste: unsaturated-resin and low profile agent are poured into rustless steel container respectively, open high speed disperser Setting speed stirs 1-3min to 1000-1500r/min；Curing agent, release agent, setting speed to 1000-1500r/ is added Min stirs 1-3min；Inorganic fire-retarded mineral material is added, setting speed to 1300-1800r/min stirs 3-8min；It is added and lives Property magnesia setting speed to 1300-1800r/min, stir 1-3min；

(3) resin paste that step (2) prepares paste and yarn cutting on: is put into the production of SMC machine group；

(4) material cures: by the packed air blast for being put into 40-50 DEG C of sheet molding compound that step (3) obtains paste warm curing room into Row curing 48h.

2. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The inorganic fire-retarded mineral material is surface modification treatment ultrafine aluminium hydroxide.

3. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The unsaturated-resin is epoxy novolac vinyl unsaturated-resin.

4. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The low profile agent is saturated polyester.

5. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The curing agent is ketal peroxide class peroxide.

6. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The release agent is the modified release agent of polymerization organic carboxyl acid.

7. the preparation method of high flame resistance Integral ceiling sheet molding compound according to claim 1, it is characterised in that: The glass fibre is the alkali-free glass fibre of 25mm.

Technical field

The present invention relates to field of polymer material preparing technology more particularly to a kind of high flame resistance Integral ceiling sheets The preparation method of moulding compound.

Background technique

Traditional sheet molding compound (Sheet molding compounds, abbreviation SMC) be by unsaturated polyester resin, The same with thermosetting compound material that the components such as release agent, curing agent, table inorganic filler and glass fibre mix.Its briquetting pressure and Forming temperature is lower, can reduce the cost of investment to equipment and mold, is suitble to the large-scale component of processing configuration complexity.Because of its tool There are excellent electric property, mechanical performance, heat resistance, chemical corrosion resistance that can meet requirement of the various products to performance, applies Range is relatively extensive.

The main growth point SMC is in auto manufacturing at present, more with the growing tension of the energy, material application range Add, to safety in utilization, the stability of material, more stringent requirements are proposed, especially has in the flame retardant property of material The flame retardant property of higher requirement, existing SMC has some limitations, and is unable to satisfy now to SMC high fire-retardance, acid and alkali-resistance Ageing-resistant requirement.

Summary of the invention

Goal of the invention: the invention proposes a kind of using surface modification treatment ultrafine aluminium hydroxide as filler, improves SMC Flame Retardancy, insulating properties, high fire-retardance chemically, the preparation method and application of high-weatherability sheet molding compound.

Technical solution: in order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is as follows: a kind of high flame resistance The preparation method of Integral ceiling sheet molding compound, includes the following steps:

(1) prepare to prepare raw material as follows by weight first: inorganic fire-retarded mineral material 250-350 parts, unsaturated-resin 60-70 parts, 30-40 parts of low profile agent, 1-2 parts of curing agent, 3-5 parts of release agent, 1-1.5 parts of activated magnesia, glass fibre 80- 100 parts.

(2) preparation of resin paste: unsaturated-resin and low profile agent are poured into rustless steel container respectively, open high speed point Machine setting speed is dissipated to 1000-1500r/min, stirs 1-3min；Curing agent, release agent, setting speed to 1000- is added 1500r/min stirs 1-3min；Inorganic fire-retarded mineral material is added, setting speed to 1300-1800r/min stirs 3-8min； Activated magnesia setting speed is added to 1300-1800r/min, stirs 1-3min；

(3) resin paste that step (2) are prepared paste and yarn cutting on: is put into the production of SMC machine group；

(4) material cures: by the packed air blast paste temperature curing for being put into 40-50 DEG C of sheet molding compound that step (3) obtains Between carry out curing 48h.

The inorganic fire-retarded mineral material is surface modification treatment ultrafine aluminium hydroxide, the type aluminium hydroxide oil factor is low, It can the advantages that additive amount is big, flame retardant effect effect is good, environmentally friendly, pyrolytic object is nontoxic in formula system.

More preferably, the unsaturated-resin is epoxy novolac vinyl unsaturated-resin.

More preferably, the low profile agent is saturated polyester.

More preferably, the curing agent is ketal peroxide class peroxide.

More preferably, the release agent is the modified release agent of polymerization organic carboxyl acid.

The glass fibre is the alkali-free glass fibre of 25mm, has very strong knot with epoxy novolac vinyl unsaturated-resin Conjunction property, greatly improves every mechanical performance of SMC material.

The utility model has the advantages that a kind of preparation method of high flame resistance Integral ceiling sheet molding compound, at the modification of surface It manages ultrafine aluminium hydroxide and makees main inorganic fire-retarded packing material, and be aided with properly mixed epoxy novolac vinyl unsaturation tree Rouge, low profile agent, curing agent, the modified release agent of polymerization organic carboxyl acid, activated magnesia and glass fibre prepare slabbing jointly Moulding compound not only improves the mechanical strength of material, also improve the electrical properties such as flame retardant property, acid and alkali-resistance, the hardness of material and Chemical property, finished product have higher intensity and high flame retardant, are widely used in integrated suspended ceiling pinch plate and other field, solve Very big technical problem, economic value and social value are simultaneously deposited.

Specific embodiment

Below with reference to embodiment, the present invention is described in further detail: